======================================
| [   14.843785][    C2] 1 lock held by swapper/2/0:
| [ 14.843983][ C2] #0: ffffffffafd774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   14.844367][    C2]
| [   14.844367][    C2] stack backtrace:
[   14.844629][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.844631][    C2] Call Trace:
[   14.844633][    C2]  <IRQ>
[ 14.844636][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.844643][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 14.844648][ C2] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 14.844653][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 14.844658][ C2] ? save_trace (kernel/locking/lockdep.c:595) 
[ 14.844666][ C2] mark_lock (kernel/locking/lockdep.c:4756) 
[ 14.844670][ C2] mark_usage (kernel/locking/lockdep.c:4645) 
[ 14.844673][ C2] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 14.844676][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 14.844680][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 14.844683][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.844688][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.844693][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 14.844695][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.844700][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 14.844703][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 14.844707][ C2] simple_pin_fs (fs/libfs.c:1067) 
[ 14.844711][ C2] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 14.844715][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 14.844722][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 14.844725][ 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) 
[ 14.844732][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.844735][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 14.844738][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.844741][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 14.844747][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.844751][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 14.844754][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 14.844757][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.844759][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.844763][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 14.844765][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.844767][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.844771][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 14.844780][ C2] __put_net (net/core/net_namespace.c:732) 
[ 14.844785][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 14.844789][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.844791][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.844795][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 14.844799][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 14.844802][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.844806][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 14.844809][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.844813][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 14.844818][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 14.844823][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.844827][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.844829][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   14.844833][    C2]  </IRQ>
[   14.844834][    C2]  <TASK>
[ 14.844835][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.844838][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 14.844843][ C2] 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
[   14.844846][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000242
[   14.844849][    C2] RAX: 000000000003ecb9 RBX: 1ffff92000028fc1 RCX: ffffffffaed905d9
[   14.844851][    C2] RDX: 0000000000000000 RSI: ffffffffaf88f4e4 RDI: ffffffffaf053be0
[   14.844853][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005ea66fa
[   14.844855][    C2] R10: ffff88802f5337d3 R11: ffffffffafa11288 R12: 0000000000000000
[   14.844856][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 14.844860][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.844865][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 14.844867][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.844870][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.844873][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.844877][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 14.844882][ C2] do_idle (kernel/sched/idle.c:325) 
[ 14.844885][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.844889][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.844892][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 14.844897][ C2] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   14.862156][    C2] RCU nest depth: 0, expected: 0
| [   14.862357][    C2] INFO: lockdep is turned off.
| [   14.862558][    C2] Preemption disabled at:
| [ 14.862560][ C2] 0x0 
[   14.862932][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.862934][    C2] Call Trace:
[   14.862936][    C2]  <IRQ>
[ 14.862938][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.862946][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 14.862954][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 14.862959][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 14.862962][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 14.862967][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 14.862973][ 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) 
[ 14.862980][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 14.862983][ 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) 
[ 14.862986][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 14.862992][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 14.862994][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 14.863000][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 14.863004][ 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) 
[ 14.863010][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.863013][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 14.863016][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.863021][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 14.863028][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.863032][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 14.863035][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 14.863038][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.863040][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.863045][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 14.863047][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.863049][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.863053][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 14.863061][ C2] __put_net (net/core/net_namespace.c:732) 
[ 14.863065][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 14.863069][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.863071][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 14.863075][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 14.863082][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 14.863085][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.863090][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 14.863093][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.863098][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 14.863102][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 14.863107][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.863110][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.863113][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   14.863117][    C2]  </IRQ>
[   14.863118][    C2]  <TASK>
[ 14.863119][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.863122][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 14.863126][ C2] 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
[   14.863128][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000242
[   14.863131][    C2] RAX: 000000000003ecb9 RBX: 1ffff92000028fc1 RCX: ffffffffaed905d9
[   14.863133][    C2] RDX: 0000000000000000 RSI: ffffffffaf88f4e4 RDI: ffffffffaf053be0
[   14.863134][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005ea66fa
[   14.863136][    C2] R10: ffff88802f5337d3 R11: ffffffffafa11288 R12: 0000000000000000
[   14.863138][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 14.863142][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.863146][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 14.863149][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.863151][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.863154][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.863158][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 14.863162][ C2] do_idle (kernel/sched/idle.c:325) 
[ 14.863166][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.863169][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.863171][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 14.863176][ C2] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.496717][    C3] INFO: lockdep is turned off.
| [   16.496941][    C3] Preemption disabled at:
| [ 16.496943][ C3] handle_softirqs (kernel/softirq.c:553) 
| [   16.497382][    C3] Tainted: [W]=WARN
[   16.497383][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.497386][    C3] Call Trace:
[   16.497388][    C3]  <IRQ>
[ 16.497390][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.497400][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 16.497410][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.497416][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.497419][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 16.497425][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.497432][ 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) 
[ 16.497440][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 16.497442][ 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) 
[ 16.497446][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.497453][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.497456][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 16.497464][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 16.497468][ 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) 
[ 16.497476][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.497480][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 16.497483][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.497486][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.497492][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.497497][ C3] ? orc_find.part.0 (arch/x86/kernel/unwind_orc.c:218) 
[ 16.497502][ C3] ? unwind_next_frame (arch/x86/kernel/unwind_orc.c:495) 
[ 16.497505][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 16.497510][ C3] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 16.497513][ C3] ? set_track_prepare (mm/slub.c:936) 
[ 16.497518][ C3] ? __alloc_object (mm/kmemleak.c:697) 
[ 16.497521][ C3] ? __create_object (mm/kmemleak.c:770) 
[ 16.497524][ C3] ? __kmalloc_cache_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4353) 
[ 16.497529][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 16.497533][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.497538][ C3] __put_net (net/core/net_namespace.c:732) 
[ 16.497542][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.497546][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.497549][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.497552][ C3] ? clockevents_program_event (kernel/time/clockevents.c:326) 
[ 16.497557][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.497561][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.497564][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.497567][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 16.497574][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.497580][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 16.497585][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.497588][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.497591][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.497595][    C3]  </IRQ>
[   16.497596][    C3]  <TASK>
[ 16.497597][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.497600][ C3] RIP: 0010:orc_find.part.0 (arch/x86/kernel/unwind_orc.c:218) 
[ 16.497604][ C3] Code: 48 b8 00 00 00 00 00 fc ff df 48 8d 3c 9d dc b0 fd b0 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 <84> d2 0f 85 0c 02 00 00 44 89 f0 8b 14 9d dc b0 fd b0 48 8d 0c 40
All code
========
   0:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   7:	fc ff df 
   a:	48 8d 3c 9d dc b0 fd 	lea    -0x4f024f24(,%rbx,4),%rdi
  11:	b0 
  12:	48 89 fa             	mov    %rdi,%rdx
  15:	48 c1 ea 03          	shr    $0x3,%rdx
  19:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
  1d:	48 89 f8             	mov    %rdi,%rax
  20:	83 e0 07             	and    $0x7,%eax
  23:	83 c0 03             	add    $0x3,%eax
  26:	38 d0                	cmp    %dl,%al
  28:	7c 08                	jl     0x32
  2a:*	84 d2                	test   %dl,%dl		<-- trapping instruction
  2c:	0f 85 0c 02 00 00    	jne    0x23e
  32:	44 89 f0             	mov    %r14d,%eax
  35:	8b 14 9d dc b0 fd b0 	mov    -0x4f024f24(,%rbx,4),%edx
  3c:	48 8d 0c 40          	lea    (%rax,%rax,2),%rcx

Code starting with the faulting instruction
===========================================
   0:	84 d2                	test   %dl,%dl
   2:	0f 85 0c 02 00 00    	jne    0x214
   8:	44 89 f0             	mov    %r14d,%eax
   b:	8b 14 9d dc b0 fd b0 	mov    -0x4f024f24(,%rbx,4),%edx
  12:	48 8d 0c 40          	lea    (%rax,%rax,2),%rcx
[   16.497607][    C3] RSP: 0018:ffffc90000a47880 EFLAGS: 00000202
[   16.497611][    C3] RAX: 0000000000000007 RBX: 0000000000000002 RCX: 0000000000000002
[   16.497613][    C3] RDX: 0000000000000000 RSI: ffffffffaf053b60 RDI: ffffffffb0fdb0e4
[   16.497615][    C3] RBP: 0000000000000001 R08: 0000000000000000 R09: ffffc90000a47a01
[   16.497617][    C3] R10: ffffffffac412687 R11: ffffc90000a47a00 R12: ffffffffabe0012f
[   16.497618][    C3] R13: 000000000002fb70 R14: 0000000000000003 R15: 0000000000000000
[ 16.497621][ C3] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) 
[ 16.497624][ C3] ? 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) 
[ 16.497631][ C3] unwind_next_frame (arch/x86/kernel/unwind_orc.c:495) 
[ 16.497634][ C3] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 16.497637][ C3] ? kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 16.497640][ C3] ? __alloc_object (mm/kmemleak.c:481 mm/kmemleak.c:661) 
[ 16.497643][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 16.497647][ C3] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 16.497650][ C3] ? kernel_text_address (kernel/extable.c:99) 
[ 16.497653][ C3] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 16.497659][ C3] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 16.497665][ C3] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 16.497669][ C3] stack_trace_save (kernel/stacktrace.c:123) 
[ 16.497672][ C3] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 16.497676][ C3] ? __alloc_object (mm/kmemleak.c:481 mm/kmemleak.c:661) 
[ 16.497679][ C3] set_track_prepare (mm/slub.c:936) 
[ 16.497682][ C3] ? __kmalloc_cache_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4353) 
[ 16.497685][ C3] ? kmem_cache_free (mm/slub.c:2333 mm/slub.c:4642 mm/slub.c:4744) 
[ 16.497689][ C3] ? exit_mmap (mm/mmap.c:1311) 
[ 16.497693][ C3] ? mmput (kernel/fork.c:1449 kernel/fork.c:1383 kernel/fork.c:1404) 
[ 16.497697][ C3] ? exit_mm (kernel/exit.c:596) 
[ 16.497702][ C3] ? do_exit (kernel/exit.c:950) 
[ 16.497705][ C3] ? do_group_exit (kernel/exit.c:1089) 
[ 16.497708][ C3] ? __x64_sys_exit_group (kernel/exit.c:1117) 
[ 16.497711][ C3] ? x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 16.497718][ C3] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 16.497721][ C3] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 16.497724][ C3] __alloc_object (mm/kmemleak.c:697) 
[ 16.497728][ C3] __create_object (mm/kmemleak.c:770) 
[ 16.497732][ C3] __kmalloc_cache_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4353) 
[ 16.497737][ C3] kmem_cache_free (mm/slub.c:2333 mm/slub.c:4642 mm/slub.c:4744) 
[ 16.497741][ C3] ? exit_mmap (mm/mmap.c:1311) 
[ 16.497745][ C3] exit_mmap (mm/mmap.c:1311) 
[ 16.497749][ C3] ? __pfx_exit_mmap (mm/mmap.c:1259) 
[ 16.497753][ C3] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:727 kernel/locking/mutex.c:746) 
[ 16.497757][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 16.497761][ C3] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:924) 
[ 16.497769][ C3] mmput (kernel/fork.c:1449 kernel/fork.c:1383 kernel/fork.c:1404) 
[ 16.497773][ C3] exit_mm (kernel/exit.c:596) 
[ 16.497776][ C3] do_exit (kernel/exit.c:950) 
[ 16.497781][ C3] do_group_exit (kernel/exit.c:1089) 
[ 16.497785][ C3] __x64_sys_exit_group (kernel/exit.c:1117) 
[ 16.497789][ C3] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 16.497792][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 16.497795][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   16.497798][    C3] RIP: 0033:0x7f5aabdc3abd
[ 16.497801][ C3] Code: Unable to access opcode bytes at 0x7f5aabdc3a93.

Code starting with the faulting instruction
===========================================
[   16.497802][    C3] RSP: 002b:00007ffc30489028 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   16.497805][    C3] RAX: ffffffffffffffda RBX: 00007f5aabea09c0 RCX: 00007f5aabdc3abd
[   16.497807][    C3] RDX: 00000000000000e7 RSI: ffffffffffffff80 RDI: 0000000000000000
[   16.497809][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000020
[   16.497810][    C3] R10: 00007ffc30488ed0 R11: 0000000000000246 R12: 00007f5aabea09c0


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