======================================
| [   16.154964][    C2] 1 lock held by swapper/2/0:
| [ 16.155166][ C2] #0: ffffffffa03774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   16.155530][    C2]
| [   16.155530][    C2] stack backtrace:
[   16.155788][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.155790][    C2] Call Trace:
[   16.155792][    C2]  <IRQ>
[ 16.155795][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.155802][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 16.155807][ C2] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 16.155812][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 16.155817][ C2] ? save_trace (kernel/locking/lockdep.c:595) 
[ 16.155824][ C2] mark_lock (kernel/locking/lockdep.c:4756) 
[ 16.155828][ C2] mark_usage (kernel/locking/lockdep.c:4645) 
[ 16.155831][ C2] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 16.155834][ C2] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.155838][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 16.155841][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 16.155846][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.155851][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 16.155854][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 16.155858][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 16.155862][ C2] ? simple_pin_fs (fs/libfs.c:1067) 
[ 16.155865][ C2] simple_pin_fs (fs/libfs.c:1067) 
[ 16.155869][ C2] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 16.155872][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 16.155880][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.155884][ 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) 
[ 16.155891][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.155894][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.155897][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.155900][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.155907][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.155911][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.155914][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.155917][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.155919][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.155923][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 16.155926][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.155928][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.155933][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 16.155942][ C2] __put_net (net/core/net_namespace.c:732) 
[ 16.155946][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.155950][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.155953][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.155956][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.155960][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.155964][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 16.155968][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 16.155971][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.155976][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.155982][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 16.155987][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.155990][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.155993][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.155997][    C2]  </IRQ>
[   16.155998][    C2]  <TASK>
[ 16.156000][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.156002][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.156006][ C2] 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
[   16.156010][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   16.156013][    C2] RAX: 0000000000045a3f RBX: 1ffff92000028fc1 RCX: ffffffff9f38f5d9
[   16.156016][    C2] RDX: 0000000000000000 RSI: ffffffff9fe8f4e4 RDI: ffffffff9f653be0
[   16.156017][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c266fa
[   16.156019][    C2] R10: ffff8880361337d3 R11: ffffffffa0011288 R12: 0000000000000000
[   16.156021][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 16.156024][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.156029][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.156032][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.156034][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.156037][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.156041][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 16.156046][ C2] do_idle (kernel/sched/idle.c:325) 
[ 16.156049][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.156052][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.156055][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 16.156060][ C2] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.172714][    C2] RCU nest depth: 0, expected: 0
| [   16.172914][    C2] INFO: lockdep is turned off.
| [   16.173112][    C2] Preemption disabled at:
| [ 16.173114][ C2] 0x0 
[   16.173596][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.173599][    C2] Call Trace:
[   16.173601][    C2]  <IRQ>
[ 16.173603][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.173613][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 16.173622][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.173627][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.173630][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 16.173635][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.173640][ 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) 
[ 16.173647][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 16.173650][ 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) 
[ 16.173653][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.173659][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.173662][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 16.173669][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.173673][ 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) 
[ 16.173678][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.173682][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.173685][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.173691][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.173696][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.173701][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.173704][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.173707][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.173710][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.173714][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 16.173716][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.173719][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.173723][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 16.173731][ C2] __put_net (net/core/net_namespace.c:732) 
[ 16.173734][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.173738][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.173741][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.173744][ C2] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.173751][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.173755][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 16.173760][ C2] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 16.173763][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.173768][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.173773][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 16.173778][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.173781][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.173784][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.173788][    C2]  </IRQ>
[   16.173789][    C2]  <TASK>
[ 16.173790][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.173793][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.173797][ C2] 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
[   16.173801][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   16.173804][    C2] RAX: 0000000000045a3f RBX: 1ffff92000028fc1 RCX: ffffffff9f38f5d9
[   16.173806][    C2] RDX: 0000000000000000 RSI: ffffffff9fe8f4e4 RDI: ffffffff9f653be0
[   16.173808][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c266fa
[   16.173809][    C2] R10: ffff8880361337d3 R11: ffffffffa0011288 R12: 0000000000000000
[   16.173811][    C2] R13: ffff888001bf2300 R14: dffffc0000000000 R15: 0000000000000000
[ 16.173815][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.173819][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.173822][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.173825][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.173828][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.173831][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 16.173836][ C2] do_idle (kernel/sched/idle.c:325) 
[ 16.173839][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.173842][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.173845][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 16.173849][ C2] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   18.962973][    C3] INFO: lockdep is turned off.
| [   18.963169][    C3] Preemption disabled at:
| [ 18.963171][ C3] 0x0 
| [   18.963543][    C3] Tainted: [W]=WARN
[   18.963544][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.963547][    C3] Call Trace:
[   18.963549][    C3]  <IRQ>
[ 18.963551][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 18.963562][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 18.963572][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 18.963577][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 18.963580][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 18.963586][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.963592][ 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) 
[ 18.963600][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 18.963602][ 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) 
[ 18.963606][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 18.963613][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 18.963616][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 18.963624][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 18.963627][ 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) 
[ 18.963635][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.963639][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 18.963642][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 18.963648][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 18.963654][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.963659][ C3] ? page_ref_add_unless.constprop.0 (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2130 ./include/linux/atomic/atomic-arch-fallback.h:2431 ./include/linux/atomic/atomic-arch-fallback.h:2456 ./include/linux/atomic/atomic-instrumented.h:1518 ./include/linux/page_ref.h:238) 
[ 18.963666][ C3] ? next_uptodate_folio (mm/filemap.c:3563) 
[ 18.963668][ C3] ? filemap_map_pages (mm/filemap.c:3746) 
[ 18.963672][ C3] ? do_fault_around (mm/memory.c:5476) 
[ 18.963677][ C3] ? do_pte_missing (mm/memory.c:5509 mm/memory.c:5652 mm/memory.c:4160) 
[ 18.963681][ C3] ? handle_pte_fault (mm/memory.c:5997) 
[ 18.963684][ C3] ? __handle_mm_fault (mm/memory.c:6140) 
[ 18.963687][ C3] ? handle_mm_fault (mm/memory.c:6321) 
[ 18.963691][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 18.963696][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.963701][ C3] __put_net (net/core/net_namespace.c:732) 
[ 18.963706][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 18.963710][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.963712][ C3] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.963717][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 18.963720][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.963723][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 18.963733][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 18.963740][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 18.963749][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 18.963755][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 18.963759][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   18.963763][    C3]  </IRQ>
[   18.963764][    C3]  <TASK>
[ 18.963766][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.963768][ C3] RIP: 0010:page_ref_add_unless.constprop.0 (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2130 ./include/linux/atomic/atomic-arch-fallback.h:2431 ./include/linux/atomic/atomic-arch-fallback.h:2456 ./include/linux/atomic/atomic-instrumented.h:1518 ./include/linux/page_ref.h:238) 
[ 18.963772][ C3] Code: b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 cb 01 00 00 8b 45 34 85 c0 0f 84 02 01 00 00 8d 50 01 f0 0f b1 13 <41> 0f 94 c4 45 84 e4 74 e8 e8 23 1b 28 02 85 c0 0f 85 f5 00 00 00
All code
========
   0:	b6 14                	mov    $0x14,%dh
   2:	02 48 89             	add    -0x77(%rax),%cl
   5:	d8 83 e0 07 83 c0    	fadds  -0x3f7cf820(%rbx)
   b:	03 38                	add    (%rax),%edi
   d:	d0 7c 08 84          	sarb   $1,-0x7c(%rax,%rcx,1)
  11:	d2 0f                	rorb   %cl,(%rdi)
  13:	85 cb                	test   %ecx,%ebx
  15:	01 00                	add    %eax,(%rax)
  17:	00 8b 45 34 85 c0    	add    %cl,-0x3f7acbbb(%rbx)
  1d:	0f 84 02 01 00 00    	je     0x125
  23:	8d 50 01             	lea    0x1(%rax),%edx
  26:	f0 0f b1 13          	lock cmpxchg %edx,(%rbx)
  2a:*	41 0f 94 c4          	sete   %r12b		<-- trapping instruction
  2e:	45 84 e4             	test   %r12b,%r12b
  31:	74 e8                	je     0x1b
  33:	e8 23 1b 28 02       	call   0x2281b5b
  38:	85 c0                	test   %eax,%eax
  3a:	0f 85 f5 00 00 00    	jne    0x135

Code starting with the faulting instruction
===========================================
   0:	41 0f 94 c4          	sete   %r12b
   4:	45 84 e4             	test   %r12b,%r12b
   7:	74 e8                	je     0xfffffffffffffff1
   9:	e8 23 1b 28 02       	call   0x2281b31
   e:	85 c0                	test   %eax,%eax
  10:	0f 85 f5 00 00 00    	jne    0x10b
[   18.963776][    C3] RSP: 0000:ffffc90000a77998 EFLAGS: 00000246
[   18.963780][    C3] RAX: 0000000000000002 RBX: ffffea0000349db4 RCX: ffffffff9d10d1a3
[   18.963783][    C3] RDX: 0000000000000003 RSI: 0000000000000004 RDI: ffffea0000349db4
[   18.963784][    C3] RBP: ffffea0000349d80 R08: 0000000000000001 R09: fffff940000693b6
[   18.963786][    C3] R10: ffffea0000349db7 R11: 0000000000000000 R12: dffffc0000000000
[   18.963788][    C3] R13: ffffea0000349d80 R14: 1ffff9200014ef5f R15: ffffc90000a77af8
[ 18.963792][ C3] ? page_ref_add_unless.constprop.0 (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-arch-fallback.h:2426 ./include/linux/atomic/atomic-arch-fallback.h:2456 ./include/linux/atomic/atomic-instrumented.h:1518 ./include/linux/page_ref.h:238) 
[ 18.963797][ C3] ? page_ref_add_unless.constprop.0 (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-arch-fallback.h:2426 ./include/linux/atomic/atomic-arch-fallback.h:2456 ./include/linux/atomic/atomic-instrumented.h:1518 ./include/linux/page_ref.h:238) 
[ 18.963800][ C3] next_uptodate_folio (mm/filemap.c:3563) 
[ 18.963804][ C3] filemap_map_pages (mm/filemap.c:3746) 
[ 18.963809][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.963812][ C3] ? __folio_batch_add_and_move (./include/linux/local_lock_internal.h:54 mm/swap.c:201) 
[ 18.963820][ C3] ? __pfx_filemap_map_pages (mm/filemap.c:3692) 
[ 18.963825][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.963828][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 18.963831][ C3] ? do_fault_around (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 mm/memory.c:5475) 
[ 18.963835][ C3] ? __pfx_filemap_map_pages (mm/filemap.c:3692) 
[ 18.963837][ C3] do_fault_around (mm/memory.c:5476) 
[ 18.963840][ C3] ? ___pte_offset_map (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 mm/pgtable-generic.c:287) 
[ 18.963847][ C3] do_pte_missing (mm/memory.c:5509 mm/memory.c:5652 mm/memory.c:4160) 
[ 18.963850][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 18.963857][ C3] handle_pte_fault (mm/memory.c:5997) 
[ 18.963861][ C3] ? __pfx_handle_pte_fault (mm/memory.c:5954) 
[ 18.963864][ C3] ? __pfx_anon_pipe_read (fs/pipe.c:271) 
[ 18.963869][ C3] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 18.963872][ C3] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:383) 
[ 18.963878][ C3] __handle_mm_fault (mm/memory.c:6140) 
[ 18.963881][ C3] ? __pfx___handle_mm_fault (mm/memory.c:6049) 
[ 18.963885][ C3] ? rcu_read_unlock (./include/linux/rcupdate.h:341 (discriminator 9) ./include/linux/rcupdate.h:871 (discriminator 9)) 
[ 18.963891][ C3] ? __pfx_lock_vma_under_rcu (mm/memory.c:6547) 
[ 18.963895][ C3] handle_mm_fault (mm/memory.c:6321) 
[ 18.963899][ C3] ? __pfx_handle_mm_fault (mm/memory.c:6276) 
[ 18.963905][ C3] do_user_addr_fault (arch/x86/mm/fault.c:1337) 
[ 18.963910][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.963914][ C3] 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) 
[ 18.963918][ C3] asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[   18.963920][    C3] RIP: 0033:0x7f6fdf21a33c
[ 18.963923][ C3] Code: c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 89 f8 62 a1 fd 00 ef c0 25 ff 0f 00 00 3d e0 0f 00 00 0f 87 34 01 00 00 <62> f3 7d 20 3f 07 00 c5 fb 93 c0 85 c0 74 55 f3 0f bc c0 c3 f3 0f
All code
========
   0:	c3                   	ret
   1:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   8:	00 00 00 
   b:	0f 1f 00             	nopl   (%rax)
   e:	f3 0f 1e fa          	endbr64
  12:	89 f8                	mov    %edi,%eax
  14:	62 a1 fd 00 ef c0    	vpxorq %xmm16,%xmm16,%xmm16
  1a:	25 ff 0f 00 00       	and    $0xfff,%eax
  1f:	3d e0 0f 00 00       	cmp    $0xfe0,%eax
  24:	0f 87 34 01 00 00    	ja     0x15e
  2a:*	62 f3 7d 20 3f 07 00 	vpcmpeqb (%rdi),%ymm16,%k0		<-- trapping instruction
  31:	c5 fb 93 c0          	kmovd  %k0,%eax
  35:	85 c0                	test   %eax,%eax
  37:	74 55                	je     0x8e
  39:	f3 0f bc c0          	tzcnt  %eax,%eax
  3d:	c3                   	ret
  3e:	f3                   	repz
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	62 f3 7d 20 3f 07 00 	vpcmpeqb (%rdi),%ymm16,%k0
   7:	c5 fb 93 c0          	kmovd  %k0,%eax
   b:	85 c0                	test   %eax,%eax
   d:	74 55                	je     0x64
   f:	f3 0f bc c0          	tzcnt  %eax,%eax
  13:	c3                   	ret
  14:	f3                   	repz
  15:	0f                   	.byte 0xf
[   18.963926][    C3] RSP: 002b:00007fffabd02fd8 EFLAGS: 00010283
[   18.963928][    C3] RAX: 00000000000005b6 RBX: 0000561e14268bd2 RCX: 0000000074697824
[   18.963930][    C3] RDX: 00007fffabd03020 RSI: 0000000000007378 RDI: 0000561e142705b6
[   18.963932][    C3] RBP: 0000000000000073 R08: 0000561e293e8cb0 R09: 0000000000000000
[   18.963933][    C3] R10: 0000000000000002 R11: 0000000000000008 R12: 0000561e14268bab


Finger prints:
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