======================================
| [   15.985462][    C3] 1 lock held by swapper/3/0:
| [ 15.985649][ C3] #0: ffffffff91b774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   15.985978][    C3]
| [   15.985978][    C3] stack backtrace:
[   15.986212][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.986214][    C3] Call Trace:
[   15.986216][    C3]  <IRQ>
[ 15.986218][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.986224][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 15.986229][ C3] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 15.986233][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 15.986238][ C3] ? save_trace (kernel/locking/lockdep.c:595) 
[ 15.986244][ C3] mark_lock (kernel/locking/lockdep.c:4756) 
[ 15.986247][ C3] mark_usage (kernel/locking/lockdep.c:4645) 
[ 15.986250][ C3] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 15.986254][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.986258][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 15.986261][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.986265][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.986270][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 15.986272][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.986277][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.986280][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 15.986283][ C3] simple_pin_fs (fs/libfs.c:1067) 
[ 15.986287][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.986290][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 15.986297][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.986300][ 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) 
[ 15.986306][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.986309][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.986312][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.986315][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 15.986320][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.986324][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.986327][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.986329][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.986332][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.986336][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 15.986338][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.986340][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.986344][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 15.986351][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.986355][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 15.986360][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.986362][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 15.986365][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.986369][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 15.986373][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.986377][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.986379][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.986384][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 15.986389][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 15.986394][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.986397][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.986400][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   15.986404][    C3]  </IRQ>
[   15.986405][    C3]  <TASK>
[ 15.986406][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.986409][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 15.986414][ C3] 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
[   15.986416][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   15.986419][    C3] RAX: 000000000004985f RBX: 1ffff9200002afc1 RCX: ffffffff90b8f5d9
[   15.986421][    C3] RDX: 0000000000000000 RSI: ffffffff9168f4e4 RDI: ffffffff90e53be0
[   15.986423][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c366fa
[   15.986425][    C3] R10: ffff8880361b37d3 R11: ffffffff91811288 R12: 0000000000000000
[   15.986426][    C3] R13: ffff888001bf45c0 R14: dffffc0000000000 R15: 0000000000000000
[ 15.986430][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.986435][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 15.986438][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.986440][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.986443][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.986447][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 15.986452][ C3] do_idle (kernel/sched/idle.c:325) 
[ 15.986455][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.986458][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.986461][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 15.986465][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.001992][    C3] RCU nest depth: 0, expected: 0
| [   16.002166][    C3] INFO: lockdep is turned off.
| [   16.002338][    C3] Preemption disabled at:
| [ 16.002339][ C3] 0x0 
[   16.002652][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.002654][    C3] Call Trace:
[   16.002655][    C3]  <IRQ>
[ 16.002657][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.002665][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 16.002671][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.002675][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.002678][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 16.002682][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.002687][ 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) 
[ 16.002692][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 16.002695][ 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) 
[ 16.002698][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.002703][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.002706][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 16.002711][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.002715][ 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) 
[ 16.002719][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.002722][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.002725][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.002728][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.002732][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.002735][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.002739][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.002741][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.002744][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.002748][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 16.002750][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.002752][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.002755][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 16.002763][ C3] __put_net (net/core/net_namespace.c:732) 
[ 16.002766][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.002770][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.002773][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.002776][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.002782][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.002785][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 16.002789][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 16.002792][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.002796][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.002801][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 16.002806][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.002809][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.002811][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.002815][    C3]  </IRQ>
[   16.002816][    C3]  <TASK>
[ 16.002818][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.002820][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.002824][ C3] 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
[   16.002827][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[   16.002830][    C3] RAX: 000000000004985f RBX: 1ffff9200002afc1 RCX: ffffffff90b8f5d9
[   16.002832][    C3] RDX: 0000000000000000 RSI: ffffffff9168f4e4 RDI: ffffffff90e53be0
[   16.002833][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c366fa
[   16.002835][    C3] R10: ffff8880361b37d3 R11: ffffffff91811288 R12: 0000000000000000
[   16.002836][    C3] R13: ffff888001bf45c0 R14: dffffc0000000000 R15: 0000000000000000
[ 16.002840][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.002845][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.002848][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.002850][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.002853][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.002857][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 16.002861][ C3] do_idle (kernel/sched/idle.c:325) 
[ 16.002864][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.002867][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.002870][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 16.002875][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   18.249246][    C2] INFO: lockdep is turned off.
| [   18.249466][    C2] Preemption disabled at:
| [ 18.249468][ C2] handle_softirqs (kernel/softirq.c:553) 
| [   18.249909][    C2] Tainted: [W]=WARN
[   18.249911][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.249913][    C2] Call Trace:
[   18.249914][    C2]  <IRQ>
[ 18.249916][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 18.249923][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 18.249930][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 18.249934][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 18.249937][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 18.249942][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.249947][ 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) 
[ 18.249952][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 18.249955][ 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) 
[ 18.249958][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 18.249964][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 18.249967][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 18.249973][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 18.249976][ 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) 
[ 18.249982][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.249986][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 18.249989][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 18.249992][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 18.249997][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.250000][ C2] ? trace_lock_release (./include/trace/events/lock.h:69) 
[ 18.250005][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 18.250008][ C2] ? __is_insn_slot_addr (./include/linux/rcupdate.h:873 kernel/kprobes.c:307) 
[ 18.250014][ C2] ? kernel_text_address (kernel/extable.c:123 kernel/extable.c:94) 
[ 18.250017][ C2] ? __kernel_text_address (kernel/extable.c:79) 
[ 18.250019][ C2] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 18.250023][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 18.250028][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 18.250031][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 18.250035][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.250040][ C2] __put_net (net/core/net_namespace.c:732) 
[ 18.250043][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 18.250047][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.250050][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.250054][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 18.250058][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.250061][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 18.250068][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 18.250073][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 18.250078][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 18.250081][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 18.250083][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   18.250087][    C2]  </IRQ>
[   18.250088][    C2]  <TASK>
[ 18.250090][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.250093][ C2] RIP: 0010:trace_lock_release (./include/trace/events/lock.h:69) 
[ 18.250097][ C2] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 53 66 90 65 8b 05 aa c5 14 05 83 f8 3f 0f 87 a3 00 00 00 89 c0 48 0f a3 05 33 ae 20 04 <72> 06 5b c3 cc cc cc cc e8 66 0a 09 00 84 c0 75 f1 0f b6 1d a4 ec
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	53                   	push   %rbx
   e:	66 90                	xchg   %ax,%ax
  10:	65 8b 05 aa c5 14 05 	mov    %gs:0x514c5aa(%rip),%eax        # 0x514c5c1
  17:	83 f8 3f             	cmp    $0x3f,%eax
  1a:	0f 87 a3 00 00 00    	ja     0xc3
  20:	89 c0                	mov    %eax,%eax
  22:	48 0f a3 05 33 ae 20 	bt     %rax,0x420ae33(%rip)        # 0x420ae5d
  29:	04 
  2a:*	72 06                	jb     0x32		<-- trapping instruction
  2c:	5b                   	pop    %rbx
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	e8 66 0a 09 00       	call   0x90a9d
  37:	84 c0                	test   %al,%al
  39:	75 f1                	jne    0x2c
  3b:	0f                   	.byte 0xf
  3c:	b6 1d                	mov    $0x1d,%dh
  3e:	a4                   	movsb  %ds:(%rsi),%es:(%rdi)
  3f:	ec                   	in     (%dx),%al

Code starting with the faulting instruction
===========================================
   0:	72 06                	jb     0x8
   2:	5b                   	pop    %rbx
   3:	c3                   	ret
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	e8 66 0a 09 00       	call   0x90a73
   d:	84 c0                	test   %al,%al
   f:	75 f1                	jne    0x2
  11:	0f                   	.byte 0xf
  12:	b6 1d                	mov    $0x1d,%dh
  14:	a4                   	movsb  %ds:(%rsi),%es:(%rdi)
  15:	ec                   	in     (%dx),%al
[   18.250100][    C2] RSP: 0018:ffffc90000a97630 EFLAGS: 00000297
[   18.250103][    C2] RAX: 0000000000000002 RBX: ffffffff91c11088 RCX: 0000000000000002
[   18.250105][    C2] RDX: 1ffffffff2382211 RSI: ffffffff8e5b17f0 RDI: ffffffff91b775e0
[   18.250107][    C2] RBP: ffffffff91b775e0 R08: 0000000000000000 R09: 0000000000000000
[   18.250109][    C2] R10: ffffffff8e5b1729 R11: ffffc90000a97710 R12: ffffffff8e5b17f0
[   18.250111][    C2] R13: ffffffff91c11088 R14: ffff88800ade0040 R15: ffff88800b1d0570
[ 18.250113][ C2] ? __is_insn_slot_addr (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/kprobes.c:307) 
[ 18.250117][ C2] ? __is_insn_slot_addr (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 kernel/kprobes.c:299) 
[ 18.250121][ C2] ? __is_insn_slot_addr (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/kprobes.c:307) 
[ 18.250126][ C2] lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 18.250129][ C2] __is_insn_slot_addr (./include/linux/rcupdate.h:873 kernel/kprobes.c:307) 
[ 18.250133][ C2] kernel_text_address (kernel/extable.c:123 kernel/extable.c:94) 
[ 18.250136][ C2] __kernel_text_address (kernel/extable.c:79) 
[ 18.250138][ C2] unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 18.250141][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 18.250144][ C2] arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 18.250151][ C2] stack_trace_save (kernel/stacktrace.c:123) 
[ 18.250153][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 18.250155][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 18.250162][ C2] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 18.250164][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 18.250167][ C2] kasan_save_stack (mm/kasan/common.c:48) 
[ 18.250170][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 18.250173][ C2] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 18.250176][ C2] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3092) 
[ 18.250179][ C2] ? release_task (kernel/exit.c:244) 
[ 18.250182][ C2] ? wait_task_zombie (kernel/exit.c:1273) 
[ 18.250185][ C2] ? __do_wait (kernel/exit.c:1562 kernel/exit.c:1678) 
[ 18.250188][ C2] ? do_wait (kernel/exit.c:1713 (discriminator 13)) 
[ 18.250191][ C2] ? kernel_wait4 (kernel/exit.c:1872) 
[ 18.250193][ C2] ? __do_sys_wait4 (kernel/exit.c:1899) 
[ 18.250196][ C2] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.250198][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 18.250201][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 18.250204][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 18.250208][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 18.250211][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.250215][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.250217][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 18.250221][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.250225][ C2] ? debug_object_active_state (lib/debugobjects.c:1056) 
[ 18.250230][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.250233][ C2] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2126 arch/x86/mm/physaddr.c:65) 
[ 18.250236][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.250239][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 18.250242][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 18.250245][ C2] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:104 ./include/linux/rcupdate.h:955 ./include/linux/mmzone.h:2126 arch/x86/mm/physaddr.c:65) 
[ 18.250249][ C2] kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 18.250252][ C2] ? __pfx_delayed_put_task_struct (kernel/exit.c:223) 
[ 18.250255][ C2] __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3092) 
[ 18.250260][ C2] release_task (kernel/exit.c:244) 
[ 18.250264][ C2] ? __pfx_release_task (kernel/exit.c:244) 
[ 18.250267][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 18.250271][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.250276][ C2] wait_task_zombie (kernel/exit.c:1273) 
[ 18.250280][ C2] ? __pfx___schedule (kernel/sched/core.c:6658) 
[ 18.250285][ C2] ? __pfx_wait_task_zombie (kernel/exit.c:1164) 
[ 18.250289][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.250293][ C2] ? wait_consider_task (kernel/exit.c:1535) 
[ 18.250297][ C2] __do_wait (kernel/exit.c:1562 kernel/exit.c:1678) 
[ 18.250302][ C2] do_wait (kernel/exit.c:1713 (discriminator 13)) 
[ 18.250307][ C2] kernel_wait4 (kernel/exit.c:1872) 
[ 18.250309][ C2] ? __pfx_kernel_wait4 (kernel/exit.c:1838) 
[ 18.250313][ C2] ? __pfx_child_wait_callback (kernel/exit.c:1596) 
[ 18.250317][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.250322][ C2] __do_sys_wait4 (kernel/exit.c:1899) 
[ 18.250325][ C2] ? __pfx___do_sys_wait4 (kernel/exit.c:1897) 
[ 18.250328][ C2] ? _copy_to_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:147 ./include/linux/uaccess.h:197 lib/usercopy.c:26) 
[ 18.250331][ C2] ? __x64_sys_rt_sigaction (kernel/signal.c:4644 kernel/signal.c:4625 kernel/signal.c:4625) 
[ 18.250336][ C2] ? __pfx___x64_sys_rt_sigaction (kernel/signal.c:4625) 
[ 18.250339][ C2] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.250343][ C2] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 18.250348][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.250351][ C2] ? do_syscall_64 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/entry-common.h:199 arch/x86/entry/syscall_64.c:90) 
[ 18.250354][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.250357][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.250360][    C2] RIP: 0033:0x7f3b0526930a
[ 18.250366][ C2] Code: Unable to access opcode bytes at 0x7f3b052692e0.

Code starting with the faulting instruction
===========================================
[   18.250368][    C2] RSP: 002b:00007fffbdb79a28 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
[   18.250371][    C2] RAX: ffffffffffffffda RBX: 00005633d69db2d0 RCX: 00007f3b0526930a
[   18.250373][    C2] RDX: 0000000000000000 RSI: 00007fffbdb79a50 RDI: 00000000ffffffff
[   18.250374][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
[   18.250376][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000


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