======================================
| [   15.431271][    C3] 1 lock held by swapper/3/0:
| [ 15.431470][ C3] #0: ffffffffb17774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   15.431808][    C3]
| [   15.431808][    C3] stack backtrace:
[   15.432045][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.432047][    C3] Call Trace:
[   15.432049][    C3]  <IRQ>
[ 15.432051][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.432057][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 15.432062][ C3] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 15.432066][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 15.432071][ C3] ? save_trace (kernel/locking/lockdep.c:595) 
[ 15.432077][ C3] mark_lock (kernel/locking/lockdep.c:4756) 
[ 15.432080][ C3] mark_usage (kernel/locking/lockdep.c:4645) 
[ 15.432083][ C3] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 15.432086][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.432090][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 15.432093][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.432097][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.432101][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 15.432104][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.432109][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.432112][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.432115][ C3] simple_pin_fs (fs/libfs.c:1067) 
[ 15.432119][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.432122][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.432129][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.432132][ 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:2376) 
[ 15.432138][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.432141][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.432144][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.432147][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.432151][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.432155][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.432158][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.432161][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.432163][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.432167][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 15.432169][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.432172][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.432175][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 15.432183][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.432187][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.432191][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.432193][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.432197][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.432201][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.432204][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.432208][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.432211][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.432215][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.432220][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 15.432225][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.432228][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.432231][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.432235][    C3]  </IRQ>
[   15.432236][    C3]  <TASK>
[ 15.432237][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.432240][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.432244][ C3] 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
[   15.432247][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000242
[   15.432250][    C3] RAX: 000000000004bc89 RBX: 1ffff9200002afc1 RCX: ffffffffb07905d9
[   15.432252][    C3] RDX: 0000000000000000 RSI: ffffffffb128f4e4 RDI: ffffffffb0a53be0
[   15.432254][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c366fa
[   15.432255][    C3] R10: ffff8880361b37d3 R11: ffffffffb1411288 R12: 0000000000000000
[   15.432257][    C3] R13: ffff888001bf45c0 R14: dffffc0000000000 R15: 0000000000000000
[ 15.432261][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.432265][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.432268][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.432270][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.432273][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.432277][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.432281][ C3] do_idle (kernel/sched/idle.c:325) 
[ 15.432285][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.432288][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.432291][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 15.432295][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.448977][    C3] RCU nest depth: 0, expected: 0
| [   15.449169][    C3] INFO: lockdep is turned off.
| [   15.449357][    C3] Preemption disabled at:
| [ 15.449359][ C3] 0x0 
[   15.449697][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.449699][    C3] Call Trace:
[   15.449700][    C3]  <IRQ>
[ 15.449703][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.449710][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 15.449716][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.449720][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.449723][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 15.449727][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.449732][ C3] ? 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) 
[ 15.449737][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 15.449740][ C3] ? 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) 
[ 15.449743][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.449748][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.449751][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 15.449756][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 15.449759][ 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:2376) 
[ 15.449764][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.449767][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 15.449770][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.449774][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.449778][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.449781][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.449785][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.449787][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.449790][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.449792][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 15.449795][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.449797][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.449800][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 15.449806][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.449809][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.449814][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.449816][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.449819][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.449825][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.449828][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.449832][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.449835][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.449840][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.449844][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 15.449849][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.449852][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.449855][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.449859][    C3]  </IRQ>
[   15.449860][    C3]  <TASK>
[ 15.449861][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.449864][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.449868][ C3] 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
[   15.449870][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000242
[   15.449873][    C3] RAX: 000000000004bc89 RBX: 1ffff9200002afc1 RCX: ffffffffb07905d9
[   15.449875][    C3] RDX: 0000000000000000 RSI: ffffffffb128f4e4 RDI: ffffffffb0a53be0
[   15.449877][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c366fa
[   15.449878][    C3] R10: ffff8880361b37d3 R11: ffffffffb1411288 R12: 0000000000000000
[   15.449880][    C3] R13: ffff888001bf45c0 R14: dffffc0000000000 R15: 0000000000000000
[ 15.449884][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.449889][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.449891][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.449894][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.449897][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.449901][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.449905][ C3] do_idle (kernel/sched/idle.c:325) 
[ 15.449908][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.449911][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.449914][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 15.449919][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.378913][    C2] INFO: lockdep is turned off.
| [   17.379136][    C2] Preemption disabled at:
| [ 17.379138][ C2] handle_softirqs (kernel/softirq.c:553) 
| [   17.379572][    C2] Tainted: [W]=WARN
[   17.379573][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.379575][    C2] Call Trace:
[   17.379577][    C2]  <IRQ>
[ 17.379579][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.379587][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 17.379595][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.379599][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.379602][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 17.379607][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.379612][ 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) 
[ 17.379618][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 17.379620][ 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) 
[ 17.379624][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.379629][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.379632][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 17.379639][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 17.379642][ 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) 
[ 17.379648][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.379651][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 17.379654][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.379657][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 17.379662][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.379666][ C2] ? unwind_next_frame (arch/x86/kernel/unwind_orc.c:665) 
[ 17.379670][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 17.379674][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 17.379677][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 17.379681][ C2] ? kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 17.379684][ C2] ? __kasan_slab_alloc (mm/kasan/common.c:348) 
[ 17.379687][ C2] ? kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 17.379692][ C2] ? fuse_request_alloc (fs/fuse/dev.c:142) 
[ 17.379696][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.379700][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.379705][ C2] __put_net (net/core/net_namespace.c:732) 
[ 17.379708][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 17.379712][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.379715][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 17.379719][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 17.379723][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.379726][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.379733][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 17.379738][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 17.379743][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.379746][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.379749][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   17.379753][    C2]  </IRQ>
[   17.379754][    C2]  <TASK>
[ 17.379755][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.379758][ C2] RIP: 0010:unwind_next_frame (arch/x86/kernel/unwind_orc.c:665) 
[ 17.379761][ C2] Code: 48 c1 ea 03 80 3c 02 00 0f 84 50 fe ff ff e8 50 40 90 00 e9 46 fe ff ff 48 b8 00 00 00 00 00 fc ff df 48 8b 14 24 48 c1 ea 03 <80> 3c 02 00 0f 85 5f 06 00 00 49 8d 7d 08 49 8b 6d 48 48 b8 00 00
All code
========
   0:	48 c1 ea 03          	shr    $0x3,%rdx
   4:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   8:	0f 84 50 fe ff ff    	je     0xfffffffffffffe5e
   e:	e8 50 40 90 00       	call   0x904063
  13:	e9 46 fe ff ff       	jmp    0xfffffffffffffe5e
  18:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1f:	fc ff df 
  22:	48 8b 14 24          	mov    (%rsp),%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
  2a:*	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)		<-- trapping instruction
  2e:	0f 85 5f 06 00 00    	jne    0x693
  34:	49 8d 7d 08          	lea    0x8(%r13),%rdi
  38:	49 8b 6d 48          	mov    0x48(%r13),%rbp
  3c:	48                   	rex.W
  3d:	b8                   	.byte 0xb8
	...

Code starting with the faulting instruction
===========================================
   0:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   4:	0f 85 5f 06 00 00    	jne    0x669
   a:	49 8d 7d 08          	lea    0x8(%r13),%rdi
   e:	49 8b 6d 48          	mov    0x48(%r13),%rbp
  12:	48                   	rex.W
  13:	b8                   	.byte 0xb8
	...
[   17.379764][    C2] RSP: 0018:ffffc90000a477d8 EFLAGS: 00000a06
[   17.379768][    C2] RAX: dffffc0000000000 RBX: 1ffff92000148f04 RCX: 0000000000000001
[   17.379770][    C2] RDX: 1ffff92000148f24 RSI: 0000000000000004 RDI: ffffc90000a478d8
[   17.379772][    C2] RBP: 0000000000000001 R08: 0000000000000000 R09: ffffc90000a47919
[   17.379774][    C2] R10: ffffffffade12687 R11: ffffc90000a47918 R12: ffffffffb25f6b1d
[   17.379776][    C2] R13: ffffc90000a478d8 R14: ffffffffb25f6b18 R15: ffffc90000a47a08
[ 17.379779][ 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) 
[ 17.379784][ C2] ? unwind_next_frame (arch/x86/kernel/unwind_orc.c:643) 
[ 17.379787][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 17.379790][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.379793][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 17.379798][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 17.379800][ C2] ? kernel_text_address (kernel/extable.c:99) 
[ 17.379804][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 17.379807][ C2] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 17.379812][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 17.379817][ C2] stack_trace_save (kernel/stacktrace.c:123) 
[ 17.379819][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 17.379822][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 17.379825][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 17.379829][ C2] kasan_save_stack (mm/kasan/common.c:48) 
[ 17.379834][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 17.379837][ C2] ? stack_depot_save_flags (lib/stackdepot.c:552 lib/stackdepot.c:619) 
[ 17.379842][ C2] ? set_track_prepare (mm/slub.c:939) 
[ 17.379847][ C2] ? kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 17.379850][ C2] ? fuse_request_alloc (fs/fuse/dev.c:142) 
[ 17.379853][ C2] ? __fuse_simple_request (fs/fuse/dev.c:654) 
[ 17.379857][ C2] ? fuse_file_put (fs/fuse/file.c:98 fs/fuse/file.c:115 fs/fuse/file.c:102) 
[ 17.379860][ C2] ? fuse_release (fs/fuse/file.c:383) 
[ 17.379863][ C2] ? __fput (fs/file_table.c:465) 
[ 17.379867][ C2] ? task_work_run (kernel/task_work.c:229 (discriminator 1)) 
[ 17.379869][ C2] ? do_exit (kernel/exit.c:960) 
[ 17.379873][ C2] ? do_group_exit (kernel/exit.c:1089) 
[ 17.379877][ C2] ? __x64_sys_exit_group (kernel/exit.c:1117) 
[ 17.379880][ C2] ? x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 17.379885][ C2] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.379888][ C2] ? set_track_update.isra.0 (mm/slub.c:957) 
[ 17.379891][ C2] ? ___slab_alloc (mm/slub.c:968 mm/slub.c:3848) 
[ 17.379894][ C2] ? fuse_request_alloc (fs/fuse/dev.c:142) 
[ 17.379899][ C2] kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 17.379902][ C2] __kasan_slab_alloc (mm/kasan/common.c:348) 
[ 17.379906][ C2] kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 17.379911][ C2] fuse_request_alloc (fs/fuse/dev.c:142) 
[ 17.379914][ C2] __fuse_simple_request (fs/fuse/dev.c:654) 
[ 17.379920][ C2] fuse_file_put (fs/fuse/file.c:98 fs/fuse/file.c:115 fs/fuse/file.c:102) 
[ 17.379923][ C2] fuse_release (fs/fuse/file.c:383) 
[ 17.379927][ C2] __fput (fs/file_table.c:465) 
[ 17.379932][ C2] task_work_run (kernel/task_work.c:229 (discriminator 1)) 
[ 17.379936][ C2] ? __pfx_task_work_run (kernel/task_work.c:195) 
[ 17.379939][ 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) 
[ 17.379944][ C2] do_exit (kernel/exit.c:960) 
[ 17.379949][ C2] do_group_exit (kernel/exit.c:1089) 
[ 17.379953][ C2] __x64_sys_exit_group (kernel/exit.c:1117) 
[ 17.379956][ C2] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 17.379959][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.379965][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   17.379968][    C2] RIP: 0033:0x7f9465c8fabd
[ 17.379971][ C2] Code: Unable to access opcode bytes at 0x7f9465c8fa93.

Code starting with the faulting instruction
===========================================
[   17.379973][    C2] RSP: 002b:00007ffe08b18d88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   17.379976][    C2] RAX: ffffffffffffffda RBX: 00007f9465d6c9c0 RCX: 00007f9465c8fabd
[   17.379977][    C2] RDX: 00000000000000e7 RSI: ffffffffffffff80 RDI: 0000000000000000
[   17.379979][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000020
[   17.379980][    C2] R10: 00007ffe08b18c30 R11: 0000000000000246 R12: 00007f9465d6c9c0


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