======================================
| [   16.030419][    C1] 1 lock held by swapper/1/0:
| [ 16.030612][ C1] #0: ffffffffa31774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [   16.030964][    C1]
| [   16.030964][    C1] stack backtrace:
[   16.031205][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.031207][    C1] Call Trace:
[   16.031209][    C1]  <IRQ>
[ 16.031211][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.031217][ C1] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 16.031221][ C1] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 16.031226][ C1] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 16.031230][ C1] ? save_trace (kernel/locking/lockdep.c:595) 
[ 16.031236][ C1] mark_lock (kernel/locking/lockdep.c:4756) 
[ 16.031239][ C1] mark_usage (kernel/locking/lockdep.c:4645) 
[ 16.031243][ C1] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 16.031246][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.031250][ C1] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 16.031253][ C1] ? simple_pin_fs (fs/libfs.c:1067) 
[ 16.031257][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.031261][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 16.031263][ C1] ? simple_pin_fs (fs/libfs.c:1067) 
[ 16.031268][ C1] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 16.031271][ C1] ? simple_pin_fs (fs/libfs.c:1067) 
[ 16.031274][ C1] simple_pin_fs (fs/libfs.c:1067) 
[ 16.031278][ C1] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 16.031281][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 16.031287][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 16.031290][ C1] ? __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) 
[ 16.031297][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.031299][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 16.031303][ C1] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.031306][ C1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.031310][ C1] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.031314][ C1] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.031317][ C1] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.031320][ C1] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.031322][ C1] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.031326][ C1] ? do_idle (kernel/sched/idle.c:325) 
[ 16.031328][ C1] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.031330][ C1] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.031334][ C1] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 16.031341][ C1] __put_net (net/core/net_namespace.c:732) 
[ 16.031345][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.031349][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.031352][ C1] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.031355][ C1] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.031359][ C1] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.031362][ C1] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 16.031366][ C1] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 16.031369][ C1] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.031374][ C1] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.031378][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 16.031383][ C1] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.031386][ C1] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.031389][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.031393][    C1]  </IRQ>
[   16.031394][    C1]  <TASK>
[ 16.031395][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.031398][ C1] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.031402][ C1] 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
[   16.031405][    C1] RSP: 0018:ffffc90000137de8 EFLAGS: 00000246
[   16.031408][    C1] RAX: 00000000000840f9 RBX: 1ffff92000026fc1 RCX: ffffffffa21905d9
[   16.031410][    C1] RDX: 0000000000000000 RSI: ffffffffa2c8f4e4 RDI: ffffffffa2453be0
[   16.031412][    C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c166fa
[   16.031413][    C1] R10: ffff8880360b37d3 R11: ffffffffa2e11288 R12: 0000000000000000
[   16.031415][    C1] R13: ffff888001bf0040 R14: dffffc0000000000 R15: 0000000000000000
[ 16.031419][ C1] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.031423][ C1] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.031426][ C1] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.031429][ C1] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.031432][ C1] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.031435][ C1] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 16.031440][ C1] do_idle (kernel/sched/idle.c:325) 
[ 16.031443][ C1] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.031446][ C1] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.031449][ C1] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 16.031453][ C1] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.047604][    C1] RCU nest depth: 0, expected: 0
| [   16.047789][    C1] INFO: lockdep is turned off.
| [   16.047967][    C1] Preemption disabled at:
| [ 16.047969][ C1] 0x0 
[   16.048280][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.048282][    C1] Call Trace:
[   16.048284][    C1]  <IRQ>
[ 16.048286][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.048293][ C1] __might_resched (kernel/sched/core.c:8796) 
[ 16.048299][ C1] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.048303][ C1] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.048306][ C1] ? simple_recursive_removal (fs/libfs.c:614) 
[ 16.048310][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.048314][ C1] ? 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) 
[ 16.048320][ C1] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 16.048322][ C1] ? 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) 
[ 16.048325][ C1] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.048330][ C1] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.048333][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 16.048338][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 16.048342][ C1] ? __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) 
[ 16.048347][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.048350][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 16.048353][ C1] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.048357][ C1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 16.048361][ C1] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.048365][ C1] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.048368][ C1] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.048371][ C1] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.048373][ C1] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.048377][ C1] ? do_idle (kernel/sched/idle.c:325) 
[ 16.048379][ C1] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.048381][ C1] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.048384][ C1] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 16.048391][ C1] __put_net (net/core/net_namespace.c:732) 
[ 16.048394][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 16.048398][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.048401][ C1] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 16.048404][ C1] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.048410][ C1] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 16.048413][ C1] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 16.048417][ C1] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 16.048420][ C1] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.048425][ C1] rcu_core (kernel/rcu/tree.c:2834) 
[ 16.048429][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 16.048434][ C1] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.048437][ C1] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.048440][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   16.048444][    C1]  </IRQ>
[   16.048445][    C1]  <TASK>
[ 16.048446][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.048449][ C1] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 16.048453][ C1] 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
[   16.048455][    C1] RSP: 0018:ffffc90000137de8 EFLAGS: 00000246
[   16.048458][    C1] RAX: 00000000000840f9 RBX: 1ffff92000026fc1 RCX: ffffffffa21905d9
[   16.048460][    C1] RDX: 0000000000000000 RSI: ffffffffa2c8f4e4 RDI: ffffffffa2453be0
[   16.048462][    C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c166fa
[   16.048463][    C1] R10: ffff8880360b37d3 R11: ffffffffa2e11288 R12: 0000000000000000
[   16.048465][    C1] R13: ffff888001bf0040 R14: dffffc0000000000 R15: 0000000000000000
[ 16.048469][ C1] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.048473][ C1] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 16.048476][ C1] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.048478][ C1] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.048482][ C1] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.048485][ C1] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 16.048490][ C1] do_idle (kernel/sched/idle.c:325) 
[ 16.048493][ C1] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.048496][ C1] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 16.048498][ C1] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 16.048503][ C1] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   18.029940][    C2] INFO: lockdep is turned off.
| [   18.030226][    C2] Preemption disabled at:
| [ 18.030228][ C2] __slab_alloc.constprop.0 (mm/slub.c:3945) 
| [   18.030770][    C2] Tainted: [W]=WARN
[   18.030771][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.030774][    C2] Call Trace:
[   18.030776][    C2]  <IRQ>
[ 18.030779][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 18.030788][ C2] __might_resched (kernel/sched/core.c:8796) 
[ 18.030795][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 18.030801][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 18.030804][ C2] ? simple_recursive_removal (fs/libfs.c:614) 
[ 18.030810][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.030816][ 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) 
[ 18.030823][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 18.030825][ 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) 
[ 18.030829][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 18.030835][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 18.030838][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 18.030846][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 18.030849][ 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) 
[ 18.030856][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.030860][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 18.030863][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 18.030869][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 18.030875][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.030880][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.030885][ C2] ? get_partial_node.part.0 (mm/slub.c:2902) 
[ 18.030888][ C2] ? ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 18.030890][ C2] ? __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 18.030893][ C2] ? kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 18.030897][ C2] ? __alloc_object (mm/kmemleak.c:481 mm/kmemleak.c:661) 
[ 18.030902][ C2] ? __create_object (mm/kmemleak.c:770) 
[ 18.030906][ C2] ? __kmalloc_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4326 mm/slub.c:4339) 
[ 18.030909][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 18.030914][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.030918][ C2] __put_net (net/core/net_namespace.c:732) 
[ 18.030923][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 18.030926][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.030929][ C2] rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 18.030934][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 18.030937][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.030940][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 18.030949][ C2] rcu_core (kernel/rcu/tree.c:2834) 
[ 18.030954][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 18.030959][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 18.030962][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 18.030965][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[   18.030968][    C2]  </IRQ>
[   18.030969][    C2]  <TASK>
[ 18.030971][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 18.030974][ C2] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.030978][ C2] Code: 74 24 10 e8 c1 1e 83 fd 48 89 ef e8 79 71 83 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 <e8> fa 6e 77 fd 65 8b 05 13 6d 97 02 85 c0 74 0e 5b 5d c3 cc cc cc
All code
========
   0:	74 24                	je     0x26
   2:	10 e8                	adc    %ch,%al
   4:	c1 1e 83             	rcrl   $0x83,(%rsi)
   7:	fd                   	std
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 79 71 83 fd       	call   0xfffffffffd837189
  10:	81 e3 00 02 00 00    	and    $0x200,%ebx
  16:	75 29                	jne    0x41
  18:	9c                   	pushf
  19:	58                   	pop    %rax
  1a:	f6 c4 02             	test   $0x2,%ah
  1d:	75 35                	jne    0x54
  1f:	48 85 db             	test   %rbx,%rbx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
  2a:*	e8 fa 6e 77 fd       	call   0xfffffffffd776f29		<-- trapping instruction
  2f:	65 8b 05 13 6d 97 02 	mov    %gs:0x2976d13(%rip),%eax        # 0x2976d49
  36:	85 c0                	test   %eax,%eax
  38:	74 0e                	je     0x48
  3a:	5b                   	pop    %rbx
  3b:	5d                   	pop    %rbp
  3c:	c3                   	ret
  3d:	cc                   	int3
  3e:	cc                   	int3
  3f:	cc                   	int3

Code starting with the faulting instruction
===========================================
   0:	e8 fa 6e 77 fd       	call   0xfffffffffd776eff
   5:	65 8b 05 13 6d 97 02 	mov    %gs:0x2976d13(%rip),%eax        # 0x2976d1f
   c:	85 c0                	test   %eax,%eax
   e:	74 0e                	je     0x1e
  10:	5b                   	pop    %rbx
  11:	5d                   	pop    %rbp
  12:	c3                   	ret
  13:	cc                   	int3
  14:	cc                   	int3
  15:	cc                   	int3
[   18.030981][    C2] RSP: 0018:ffffc900006177b8 EFLAGS: 00000206
[   18.030985][    C2] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffff9fc43b9f
[   18.030988][    C2] RDX: 0000000000000000 RSI: ffffffffa2453b60 RDI: 0000000000000001
[   18.030990][    C2] RBP: ffff88800104f440 R08: 0000000000000000 R09: 0000000000000000
[   18.030991][    C2] R10: ffffffffa3be68d7 R11: 0000000000000820 R12: ffff88800104f440
[   18.030993][    C2] R13: ffffea000014d700 R14: ffff88800104de40 R15: ffff88800535c890
[ 18.030998][ C2] ? trace_irq_enable.constprop.0 (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/cpumask.h:654 ./include/linux/cpumask.h:1210 ./include/trace/events/preemptirq.h:40) 
[ 18.031004][ C2] get_partial_node.part.0 (mm/slub.c:2902) 
[ 18.031009][ C2] ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 18.031012][ C2] ? __alloc_object (mm/kmemleak.c:481 mm/kmemleak.c:661) 
[ 18.031015][ C2] ? copy_args_to_argbuf (fs/fuse/virtio_fs.c:704) 
[ 18.031022][ C2] ? virtio_fs_enqueue_req (fs/fuse/virtio_fs.c:1405) 
[ 18.031026][ C2] ? __alloc_object (mm/kmemleak.c:481 mm/kmemleak.c:661) 
[ 18.031029][ C2] __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 18.031033][ C2] ? __alloc_object (mm/kmemleak.c:481 mm/kmemleak.c:661) 
[ 18.031036][ C2] kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 18.031039][ C2] ? copy_args_to_argbuf (fs/fuse/virtio_fs.c:709) 
[ 18.031042][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5884) 
[ 18.031046][ C2] ? copy_args_to_argbuf (fs/fuse/virtio_fs.c:709) 
[ 18.031049][ C2] __alloc_object (mm/kmemleak.c:481 mm/kmemleak.c:661) 
[ 18.031052][ C2] __create_object (mm/kmemleak.c:770) 
[ 18.031056][ C2] ? copy_args_to_argbuf (fs/fuse/virtio_fs.c:709) 
[ 18.031059][ C2] __kmalloc_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4151 mm/slub.c:4196 mm/slub.c:4326 mm/slub.c:4339) 
[ 18.031063][ C2] copy_args_to_argbuf (fs/fuse/virtio_fs.c:709) 
[ 18.031067][ C2] ? __kernel_text_address (kernel/extable.c:79) 
[ 18.031072][ C2] virtio_fs_enqueue_req (fs/fuse/virtio_fs.c:1405) 
[ 18.031078][ C2] ? __pfx_virtio_fs_enqueue_req (fs/fuse/virtio_fs.c:1376) 
[ 18.031082][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 18.031086][ C2] ? stack_depot_save_flags (lib/stackdepot.c:552 lib/stackdepot.c:619) 
[ 18.031091][ 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) 
[ 18.031095][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 18.031098][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.031102][ 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) 
[ 18.031105][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 18.031108][ C2] ? fuse_get_unique (fs/fuse/dev.c:317) 
[ 18.031113][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.031116][ 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) 
[ 18.031121][ C2] virtio_fs_send_req (fs/fuse/virtio_fs.c:1499) 
[ 18.031124][ C2] ? fuse_send_one (fs/fuse/dev.c:400) 
[ 18.031128][ C2] __fuse_simple_request (fs/fuse/dev.c:578 fs/fuse/dev.c:672) 
[ 18.031134][ C2] fuse_file_put (fs/fuse/file.c:98 fs/fuse/file.c:115 fs/fuse/file.c:102) 
[ 18.031138][ C2] fuse_release (fs/fuse/file.c:383) 
[ 18.031143][ C2] __fput (fs/file_table.c:465) 
[ 18.031150][ C2] task_work_run (kernel/task_work.c:229 (discriminator 1)) 
[ 18.031154][ C2] ? __pfx_task_work_run (kernel/task_work.c:195) 
[ 18.031157][ 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) 
[ 18.031162][ C2] do_exit (kernel/exit.c:960) 
[ 18.031167][ C2] do_group_exit (kernel/exit.c:1089) 
[ 18.031171][ C2] __x64_sys_exit_group (kernel/exit.c:1117) 
[ 18.031175][ C2] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 18.031180][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.031184][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.031186][    C2] RIP: 0033:0x7f2068e95abd
[ 18.031189][ C2] Code: Unable to access opcode bytes at 0x7f2068e95a93.

Code starting with the faulting instruction
===========================================
[   18.031191][    C2] RSP: 002b:00007ffcd31dbb78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   18.031194][    C2] RAX: ffffffffffffffda RBX: 00007f2068f729c0 RCX: 00007f2068e95abd
[   18.031196][    C2] RDX: 00000000000000e7 RSI: ffffffffffffff80 RDI: 0000000000000000
[   18.031197][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000020
[   18.031199][    C2] R10: 00007ffcd31dba20 R11: 0000000000000246 R12: 00007f2068f729c0


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