======================================
| [   15.262438][    C0] 1 lock held by swapper/0/0:
| [ 15.262646][ C0] #0: ffffffffbc3774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   15.263022][    C0]
| [   15.263022][    C0] stack backtrace:
[   15.263295][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.263297][    C0] Call Trace:
[   15.263299][    C0]  <IRQ>
[ 15.263301][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.263307][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 15.263311][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 15.263314][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 15.263320][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 15.263323][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 15.263329][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 15.263332][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 15.263335][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 15.263338][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.263343][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 15.263346][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.263350][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.263354][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 15.263356][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.263361][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.263364][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.263367][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 15.263371][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.263374][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 15.263380][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.263383][ 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) 
[ 15.263389][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.263392][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.263395][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.263398][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.263402][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.263405][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.263409][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.263411][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.263414][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.263417][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.263419][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.263421][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.263424][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.263429][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.263433][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.263437][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.263439][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.263442][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.263446][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.263450][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.263453][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.263456][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.263460][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.263465][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.263470][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.263473][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.263475][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.263479][    C0]  </IRQ>
[   15.263480][    C0]  <TASK>
[ 15.263481][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.263484][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.263488][ C0] Code: a2 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 47 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:	a2 b5 00 c3 cc cc cc 	movabs %al,0xfccccccccc300b5
   7:	cc 0f 
   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 83 47 10 00 	verw   0x104783(%rip)        # 0x1047ab
  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
[   15.263491][    C0] RSP: 0018:ffffffffbc007df8 EFLAGS: 00000242
[   15.263494][    C0] RAX: 000000000007099b RBX: 1ffffffff7800fc3 RCX: ffffffffbb38f5d9
[   15.263496][    C0] RDX: 0000000000000000 RSI: ffffffffbbe8f4e4 RDI: ffffffffbb653be0
[   15.263497][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   15.263499][    C0] R10: ffff8880360337d3 R11: ffffffffbc011288 R12: 0000000000000000
[   15.263501][    C0] R13: ffffffffbc01f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.263505][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.263509][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.263512][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.263514][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.263517][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.263521][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.263525][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.263529][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.263531][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.263535][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.263539][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 15.263543][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 15.263547][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.282199][    C0] RCU nest depth: 0, expected: 0
| [   15.282514][    C0] INFO: lockdep is turned off.
| [   15.282701][    C0] Preemption disabled at:
| [ 15.282703][ C0] schedule_preempt_disabled (kernel/sched/core.c:6933) 
[   15.283252][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.283254][    C0] Call Trace:
[   15.283255][    C0]  <IRQ>
[ 15.283257][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.283261][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 15.283267][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.283271][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.283274][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 15.283278][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.283282][ 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) 
[ 15.283288][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 15.283290][ 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) 
[ 15.283293][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.283298][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.283301][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 15.283306][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.283309][ 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) 
[ 15.283315][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.283318][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.283321][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.283325][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.283329][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.283333][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.283336][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.283338][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.283341][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.283344][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.283346][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.283348][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.283351][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.283357][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.283360][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.283364][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.283367][ C0] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.283370][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.283375][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.283378][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.283382][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.283385][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.283390][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.283394][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.283399][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.283402][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.283404][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.283408][    C0]  </IRQ>
[   15.283409][    C0]  <TASK>
[ 15.283410][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.283413][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.283417][ C0] Code: a2 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 47 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:	a2 b5 00 c3 cc cc cc 	movabs %al,0xfccccccccc300b5
   7:	cc 0f 
   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 83 47 10 00 	verw   0x104783(%rip)        # 0x1047ab
  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
[   15.283419][    C0] RSP: 0018:ffffffffbc007df8 EFLAGS: 00000242
[   15.283422][    C0] RAX: 000000000007099b RBX: 1ffffffff7800fc3 RCX: ffffffffbb38f5d9
[   15.283423][    C0] RDX: 0000000000000000 RSI: ffffffffbbe8f4e4 RDI: ffffffffbb653be0
[   15.283425][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c066fa
[   15.283427][    C0] R10: ffff8880360337d3 R11: ffffffffbc011288 R12: 0000000000000000
[   15.283428][    C0] R13: ffffffffbc01f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.283433][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.283438][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.283440][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.283443][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.283446][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.283450][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.283454][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.283458][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.283460][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.283464][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.283468][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:295) 
[ 15.283472][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:231 (discriminator 17)) 
[ 15.283476][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.091011][    C2] INFO: lockdep is turned off.
| [   17.091240][    C2] Preemption disabled at:
| [ 17.091242][ C2] handle_softirqs (kernel/softirq.c:553) 
| [   17.091703][    C2] Tainted: [W]=WARN
[   17.091705][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.091707][    C2] Call Trace:
[   17.091709][    C2]  <IRQ>
[ 17.091711][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.091721][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 17.091729][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.091734][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.091737][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 17.091742][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.091749][ 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) 
[ 17.091756][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 17.091759][ 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) 
[ 17.091762][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.091768][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.091771][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 17.091778][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.091781][ 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) 
[ 17.091788][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.091792][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.091795][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.091798][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 17.091803][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.091808][ C2] ? __rcu_read_unlock (kernel/rcu/tree_plugin.h:398 kernel/rcu/tree_plugin.h:435) 
[ 17.091811][ C2] ? unwind_next_frame (./include/linux/rcupdate.h:874 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 17.091816][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 17.091822][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 17.091825][ C2] ? set_track_prepare (mm/slub.c:936) 
[ 17.091832][ C2] ? free_to_partial_list (mm/slub.c:4387) 
[ 17.091837][ C2] ? qlist_free_all (mm/kasan/quarantine.c:174) 
[ 17.091842][ C2] ? kasan_quarantine_reduce (./include/linux/srcu.h:400 mm/kasan/quarantine.c:287) 
[ 17.091845][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.091851][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.091855][ C2] __put_net (net/core/net_namespace.c:732) 
[ 17.091859][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.091863][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.091865][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.091869][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.091872][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.091880][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.091885][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.091889][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 17.091894][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.091896][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.091899][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.091902][    C2]  </IRQ>
[   17.091903][    C2]  <TASK>
[ 17.091905][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.091907][ C2] RIP: 0010:__rcu_read_unlock (kernel/rcu/tree_plugin.h:398 kernel/rcu/tree_plugin.h:435) 
[ 17.091911][ C2] Code: 7c 08 84 d2 0f 85 ec 00 00 00 65 4c 8b 25 6a f7 09 05 49 8d bc 24 04 04 00 00 8b 9d 04 04 00 00 48 b8 00 00 00 00 00 fc ff df <48> 89 fa 48 c1 ea 03 83 eb 01 0f b6 14 02 48 89 f8 83 e0 07 83 c0
All code
========
   0:	7c 08                	jl     0xa
   2:	84 d2                	test   %dl,%dl
   4:	0f 85 ec 00 00 00    	jne    0xf6
   a:	65 4c 8b 25 6a f7 09 	mov    %gs:0x509f76a(%rip),%r12        # 0x509f77c
  11:	05 
  12:	49 8d bc 24 04 04 00 	lea    0x404(%r12),%rdi
  19:	00 
  1a:	8b 9d 04 04 00 00    	mov    0x404(%rbp),%ebx
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df 
  2a:*	48 89 fa             	mov    %rdi,%rdx		<-- trapping instruction
  2d:	48 c1 ea 03          	shr    $0x3,%rdx
  31:	83 eb 01             	sub    $0x1,%ebx
  34:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
  38:	48 89 f8             	mov    %rdi,%rax
  3b:	83 e0 07             	and    $0x7,%eax
  3e:	83                   	.byte 0x83
  3f:	c0                   	.byte 0xc0

Code starting with the faulting instruction
===========================================
   0:	48 89 fa             	mov    %rdi,%rdx
   3:	48 c1 ea 03          	shr    $0x3,%rdx
   7:	83 eb 01             	sub    $0x1,%ebx
   a:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   e:	48 89 f8             	mov    %rdi,%rax
  11:	83 e0 07             	and    $0x7,%eax
  14:	83                   	.byte 0x83
  15:	c0                   	.byte 0xc0
[   17.091913][    C2] RSP: 0018:ffffc90000a37888 EFLAGS: 00000246
[   17.091917][    C2] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90000a38001
[   17.091919][    C2] RDX: 0000000000000000 RSI: ffffffffbb653b60 RDI: ffff88800ac9a704
[   17.091921][    C2] RBP: ffff88800ac9a300 R08: 0000000000000000 R09: ffffc90000a379e9
[   17.091922][    C2] R10: ffffffffb8a12687 R11: ffffc90000a379e8 R12: ffff88800ac9a300
[   17.091924][    C2] R13: ffffc90000a379a8 R14: ffffc90000a30000 R15: ffffc90000a37c58
[ 17.091927][ C2] ? unwind_next_frame (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 17.091932][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 17.091935][ C2] unwind_next_frame (./include/linux/rcupdate.h:874 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 17.091938][ C2] ? __kasan_slab_alloc (mm/kasan/common.c:329) 
[ 17.091944][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 17.091948][ C2] ? __kasan_slab_alloc (mm/kasan/common.c:329) 
[ 17.091951][ C2] ? kernel_text_address (kernel/extable.c:99) 
[ 17.091955][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 17.091958][ C2] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 17.091963][ C2] ? kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 17.091967][ C2] stack_trace_save (kernel/stacktrace.c:123) 
[ 17.091969][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 17.091971][ C2] ? check_bytes_and_report (mm/slub.c:1212) 
[ 17.091976][ C2] ? check_object (mm/slub.c:1289 mm/slub.c:1388) 
[ 17.091979][ C2] set_track_prepare (mm/slub.c:936) 
[ 17.091982][ C2] ? kasan_quarantine_reduce (./include/linux/srcu.h:400 mm/kasan/quarantine.c:287) 
[ 17.091984][ C2] ? __kasan_slab_alloc (mm/kasan/common.c:329) 
[ 17.091988][ C2] ? free_debug_processing (mm/slub.c:3472) 
[ 17.091992][ C2] free_to_partial_list (mm/slub.c:4387) 
[ 17.091995][ C2] ? qlist_free_all (mm/kasan/quarantine.c:163 mm/kasan/quarantine.c:179) 
[ 17.091998][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.092002][ C2] qlist_free_all (mm/kasan/quarantine.c:174) 
[ 17.092006][ C2] kasan_quarantine_reduce (./include/linux/srcu.h:400 mm/kasan/quarantine.c:287) 
[ 17.092009][ C2] __kasan_slab_alloc (mm/kasan/common.c:329) 
[ 17.092013][ C2] kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 17.092017][ C2] fuse_request_alloc (fs/fuse/dev.c:142) 
[ 17.092023][ C2] __fuse_simple_request (fs/fuse/dev.c:654) 
[ 17.092029][ C2] fuse_file_put (fs/fuse/file.c:98 fs/fuse/file.c:115 fs/fuse/file.c:102) 
[ 17.092033][ C2] fuse_release (fs/fuse/file.c:383) 
[ 17.092037][ C2] __fput (fs/file_table.c:465) 
[ 17.092044][ C2] task_work_run (kernel/task_work.c:229 (discriminator 1)) 
[ 17.092048][ C2] ? __pfx_task_work_run (kernel/task_work.c:195) 
[ 17.092050][ 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) 
[ 17.092055][ C2] do_exit (kernel/exit.c:960) 
[ 17.092062][ C2] do_group_exit (kernel/exit.c:1089) 
[ 17.092066][ C2] __x64_sys_exit_group (kernel/exit.c:1117) 
[ 17.092069][ C2] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 17.092076][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.092079][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   17.092082][    C2] RIP: 0033:0x7fe4ddb44abd
[ 17.092085][ C2] Code: Unable to access opcode bytes at 0x7fe4ddb44a93.

Code starting with the faulting instruction
===========================================
[   17.092086][    C2] RSP: 002b:00007fff0a6dea88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   17.092089][    C2] RAX: ffffffffffffffda RBX: 00007fe4ddc219c0 RCX: 00007fe4ddb44abd
[   17.092090][    C2] RDX: 00000000000000e7 RSI: ffffffffffffff80 RDI: 0000000000000000
[   17.092092][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000020
[   17.092094][    C2] R10: 00007fff0a6de930 R11: 0000000000000246 R12: 00007fe4ddc219c0


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