======================================
| [   16.163552][    C0] 1 lock held by swapper/0/0:
| [ 16.163792][ C0] #0: ffffffff9f7774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   16.164217][    C0]
| [   16.164217][    C0] stack backtrace:
[   16.164509][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.164512][    C0] Call Trace:
[   16.164513][    C0]  <IRQ>
[ 16.164515][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.164521][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 16.164526][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 16.164529][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 16.164534][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 16.164538][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 16.164544][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 16.164547][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 16.164550][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 16.164553][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.164557][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 16.164560][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 16.164565][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.164569][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 16.164572][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 16.164576][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 16.164580][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 16.164583][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 16.164587][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 16.164590][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 16.164596][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 16.164599][ C0] ? __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:2376) 
[ 16.164605][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.164608][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 16.164611][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.164614][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.164618][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.164621][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.164624][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.164627][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.164630][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.164633][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 16.164635][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.164638][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.164640][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.164646][ C0] __put_net (net/core/net_namespace.c:732) 
[ 16.164650][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.164654][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.164656][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.164659][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.164664][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.164667][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 16.164670][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 16.164673][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.164678][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.164682][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 16.164688][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.164691][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.164693][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.164697][    C0]  </IRQ>
[   16.164698][    C0]  <TASK>
[ 16.164700][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.164702][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.164706][ C0] Code: 92 b5 00 c3 cc cc cc cc 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 83 37 10 00 fb f4 <e9> fc 54 02 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	92                   	xchg   %eax,%edx
   1:	b5 00                	mov    $0x0,%ch
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	0f 1f 00             	nopl   (%rax)
   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:	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 83 37 10 00 	verw   0x103783(%rip)        # 0x1037ab
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	e9 fc 54 02 00       	jmp    0x2552b		<-- trapping instruction
  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:	e9 fc 54 02 00       	jmp    0x25501
   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
[   16.164709][    C0] RSP: 0018:ffffffff9f407df8 EFLAGS: 00000246
[   16.164713][    C0] RAX: 00000000000708ff RBX: 1ffffffff3e80fc3 RCX: ffffffff9e7905d9
[   16.164715][    C0] RDX: 0000000000000000 RSI: ffffffff9f28f4e4 RDI: ffffffff9ea53be0
[   16.164716][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   16.164718][    C0] R10: ffff8880360337d3 R11: ffffffff9f411288 R12: 0000000000000000
[   16.164720][    C0] R13: ffffffff9f41f240 R14: dffffc0000000000 R15: 0000000000014770
[ 16.164724][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.164728][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.164731][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.164733][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.164736][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.164740][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 16.164745][ C0] do_idle (kernel/sched/idle.c:325) 
[ 16.164748][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.164751][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.164754][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.164758][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 16.164763][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 16.164767][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.186111][    C0] RCU nest depth: 0, expected: 0
| [   16.186334][    C0] INFO: lockdep is turned off.
| [   16.186691][    C0] Preemption disabled at:
| [ 16.186693][ C0] schedule_preempt_disabled (kernel/sched/core.c:6933) 
[   16.187202][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.187204][    C0] Call Trace:
[   16.187205][    C0]  <IRQ>
[ 16.187207][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.187213][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 16.187219][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.187223][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.187226][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 16.187230][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.187235][ C0] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 16.187240][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 16.187243][ C0] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 16.187246][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.187252][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.187255][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 16.187261][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 16.187264][ C0] ? __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:2376) 
[ 16.187269][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.187272][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 16.187275][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.187279][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.187283][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.187287][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.187290][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.187293][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.187296][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.187298][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 16.187301][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.187303][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.187306][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.187313][ C0] __put_net (net/core/net_namespace.c:732) 
[ 16.187316][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.187320][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.187323][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.187326][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.187331][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.187335][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 16.187339][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 16.187341][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.187346][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.187350][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 16.187356][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.187359][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.187361][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.187365][    C0]  </IRQ>
[   16.187366][    C0]  <TASK>
[ 16.187368][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.187370][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.187374][ C0] Code: 92 b5 00 c3 cc cc cc cc 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 83 37 10 00 fb f4 <e9> fc 54 02 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	92                   	xchg   %eax,%edx
   1:	b5 00                	mov    $0x0,%ch
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	0f 1f 00             	nopl   (%rax)
   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:	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 83 37 10 00 	verw   0x103783(%rip)        # 0x1037ab
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	e9 fc 54 02 00       	jmp    0x2552b		<-- trapping instruction
  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:	e9 fc 54 02 00       	jmp    0x25501
   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
[   16.187377][    C0] RSP: 0018:ffffffff9f407df8 EFLAGS: 00000246
[   16.187380][    C0] RAX: 00000000000708ff RBX: 1ffffffff3e80fc3 RCX: ffffffff9e7905d9
[   16.187382][    C0] RDX: 0000000000000000 RSI: ffffffff9f28f4e4 RDI: ffffffff9ea53be0
[   16.187384][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   16.187386][    C0] R10: ffff8880360337d3 R11: ffffffff9f411288 R12: 0000000000000000
[   16.187387][    C0] R13: ffffffff9f41f240 R14: dffffc0000000000 R15: 0000000000014770
[ 16.187391][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.187396][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.187398][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.187401][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.187404][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.187407][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 16.187412][ C0] do_idle (kernel/sched/idle.c:325) 
[ 16.187416][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.187419][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.187422][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.187426][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 16.187430][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 16.187434][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   18.550950][    C2] INFO: lockdep is turned off.
| [   18.551149][    C2] Preemption disabled at:
| [ 18.551151][ C2] copy_fpstate_to_sigframe (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/thread_info.h:126 arch/x86/kernel/fpu/signal.c:214) 
| [   18.551611][    C2] Tainted: [W]=WARN
[   18.551613][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.551615][    C2] Call Trace:
[   18.551617][    C2]  <IRQ>
[ 18.551619][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 18.551626][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 18.551632][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 18.551637][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 18.551642][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 18.551647][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.551652][ C2] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 18.551658][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 18.551661][ C2] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 18.551664][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 18.551669][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 18.551673][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 18.551678][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 18.551682][ C2] ? __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:2376) 
[ 18.551687][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.551691][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 18.551694][ C2] ? __local_bh_enable_ip (kernel/softirq.c:407) 
[ 18.551698][ C2] ? copy_fpstate_to_sigframe (arch/x86/kernel/fpu/signal.c:222) 
[ 18.551701][ C2] ? get_sigframe (arch/x86/kernel/signal.c:163) 
[ 18.551706][ C2] ? x64_setup_rt_frame (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 arch/x86/kernel/signal_64.c:153 arch/x86/kernel/signal_64.c:176) 
[ 18.551709][ C2] ? handle_signal (arch/x86/kernel/signal.c:250 arch/x86/kernel/signal.c:294) 
[ 18.551713][ C2] ? arch_do_signal_or_restart (arch/x86/kernel/signal.c:340) 
[ 18.551716][ C2] ? exit_to_user_mode_loop (kernel/entry/common.c:113) 
[ 18.551720][ C2] ? do_syscall_64 (./include/linux/entry-common.h:330 ./include/linux/entry-common.h:414 ./include/linux/entry-common.h:449 arch/x86/entry/syscall_64.c:100) 
[ 18.551723][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 18.551727][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 18.551731][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.551735][ C2] __put_net (net/core/net_namespace.c:732) 
[ 18.551739][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 18.551743][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.551746][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.551749][ C2] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 18.551753][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 18.551757][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.551760][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 18.551767][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 18.551772][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 18.551776][ C2] ? copy_fpstate_to_sigframe (./include/linux/bottom_half.h:33 ./arch/x86/include/asm/fpu/api.h:77 arch/x86/kernel/fpu/signal.c:220) 
[ 18.551779][ C2] do_softirq (kernel/softirq.c:480 kernel/softirq.c:467) 
[   18.551782][    C2]  </IRQ>
[   18.551783][    C2]  <TASK>
[ 18.551785][ C2] __local_bh_enable_ip (kernel/softirq.c:407) 
[ 18.551788][ C2] copy_fpstate_to_sigframe (arch/x86/kernel/fpu/signal.c:222) 
[ 18.551792][ C2] ? fpu__alloc_mathframe (arch/x86/kernel/fpu/signal.c:493) 
[ 18.551795][ C2] get_sigframe (arch/x86/kernel/signal.c:163) 
[ 18.551799][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.551803][ C2] ? __pfx_get_sigframe (arch/x86/kernel/signal.c:96) 
[ 18.551806][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.551809][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.551812][ C2] ? trace_rseq_update (./include/trace/events/rseq.h:11 (discriminator 21)) 
[ 18.551819][ C2] x64_setup_rt_frame (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 arch/x86/kernel/signal_64.c:153 arch/x86/kernel/signal_64.c:176) 
[ 18.551823][ C2] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:425) 
[ 18.551827][ C2] ? __pfx_x64_setup_rt_frame (arch/x86/kernel/signal_64.c:165) 
[ 18.551834][ C2] handle_signal (arch/x86/kernel/signal.c:250 arch/x86/kernel/signal.c:294) 
[ 18.551838][ C2] arch_do_signal_or_restart (arch/x86/kernel/signal.c:340) 
[ 18.551841][ C2] ? __pfx_arch_do_signal_or_restart (arch/x86/kernel/signal.c:334) 
[ 18.551848][ 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/mm.h:704 ./include/linux/mm.h:799 arch/x86/mm/fault.c:1338) 
[ 18.551851][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.551855][ C2] exit_to_user_mode_loop (kernel/entry/common.c:113) 
[ 18.551859][ C2] do_syscall_64 (./include/linux/entry-common.h:330 ./include/linux/entry-common.h:414 ./include/linux/entry-common.h:449 arch/x86/entry/syscall_64.c:100) 
[ 18.551862][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.551865][    C2] RIP: 0033:0x7f0cdfbcd83b
[ 18.551869][ C2] Code: 48 85 f6 74 15 48 b9 00 00 00 80 01 00 00 00 48 8b 06 48 85 c8 75 48 49 89 f0 41 ba 08 00 00 00 4c 89 c6 b8 0e 00 00 00 0f 05 <89> c2 f7 da 3d 00 f0 ff ff b8 00 00 00 00 0f 47 c2 48 8b 94 24 88
All code
========
   0:	48 85 f6             	test   %rsi,%rsi
   3:	74 15                	je     0x1a
   5:	48 b9 00 00 00 80 01 	movabs $0x180000000,%rcx
   c:	00 00 00 
   f:	48 8b 06             	mov    (%rsi),%rax
  12:	48 85 c8             	test   %rcx,%rax
  15:	75 48                	jne    0x5f
  17:	49 89 f0             	mov    %rsi,%r8
  1a:	41 ba 08 00 00 00    	mov    $0x8,%r10d
  20:	4c 89 c6             	mov    %r8,%rsi
  23:	b8 0e 00 00 00       	mov    $0xe,%eax
  28:	0f 05                	syscall
  2a:*	89 c2                	mov    %eax,%edx		<-- trapping instruction
  2c:	f7 da                	neg    %edx
  2e:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
  33:	b8 00 00 00 00       	mov    $0x0,%eax
  38:	0f 47 c2             	cmova  %edx,%eax
  3b:	48                   	rex.W
  3c:	8b                   	.byte 0x8b
  3d:	94                   	xchg   %eax,%esp
  3e:	24 88                	and    $0x88,%al

Code starting with the faulting instruction
===========================================
   0:	89 c2                	mov    %eax,%edx
   2:	f7 da                	neg    %edx
   4:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   9:	b8 00 00 00 00       	mov    $0x0,%eax
   e:	0f 47 c2             	cmova  %edx,%eax
  11:	48                   	rex.W
  12:	8b                   	.byte 0x8b
  13:	94                   	xchg   %eax,%esp
  14:	24 88                	and    $0x88,%al
[   18.551871][    C2] RSP: 002b:00007ffff87e1570 EFLAGS: 00000246 ORIG_RAX: 000000000000000e
[   18.551875][    C2] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f0cdfbcd83b
[   18.551877][    C2] RDX: 0000000000000000 RSI: 00007ffff87e1630 RDI: 0000000000000002
[   18.551879][    C2] RBP: 0000000000000000 R08: 00007ffff87e1630 R09: 0000000000000000
[   18.551880][    C2] R10: 0000000000000008 R11: 0000000000000246 R12: 0000560d9d060620


Finger prints:
copy_fpstate_to_sigframe:dump_stack_lvl:__might_resched:down_write:simple_recursive_removal
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock
schedule_preempt_disabled:dump_stack_lvl:__might_resched:down_write:simple_recursive_removal