======================================
| [   15.384323][    C3] 1 lock held by swapper/3/0:
| [ 15.384514][ C3] #0: ffffffffb4974480 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   15.384868][    C3]
| [   15.384868][    C3] stack backtrace:
[   15.385119][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.385122][    C3] Call Trace:
[   15.385124][    C3]  <IRQ>
[ 15.385127][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.385134][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 15.385140][ C3] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 15.385145][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 15.385152][ C3] ? save_trace (kernel/locking/lockdep.c:594) 
[ 15.385156][ C3] mark_lock (kernel/locking/lockdep.c:4754) 
[ 15.385160][ C3] mark_usage (kernel/locking/lockdep.c:4643) 
[ 15.385164][ C3] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 15.385169][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 15.385173][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.385179][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.385186][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 15.385189][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.385193][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.385197][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.385200][ C3] simple_pin_fs (fs/libfs.c:1066) 
[ 15.385204][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.385209][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.385214][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.385216][ 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:2333) 
[ 15.385222][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.385225][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.385229][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.385231][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.385237][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.385242][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.385245][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.385248][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.385250][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.385256][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 15.385258][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.385262][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.385268][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 15.385275][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.385279][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 15.385283][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.385286][ C3] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.385289][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.385293][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.385298][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.385301][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.385305][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.385309][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.385313][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 15.385318][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.385320][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.385323][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.385326][    C3]  </IRQ>
[   15.385327][    C3]  <TASK>
[ 15.385328][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.385331][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.385335][ C3] Code: b0 b8 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 a3 d0 13 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	b0 b8                	mov    $0xb8,%al
   2:	00 c3                	add    %al,%bl
   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 a3 d0 13 00 	verw   0x13d0a3(%rip)        # 0x13d0cb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  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:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   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
[   15.385339][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000242
[   15.385342][    C3] RAX: 00000000000492e5 RBX: 1ffff9200002afc1 RCX: ffffffffb3955a19
[   15.385345][    C3] RDX: 0000000000000000 RSI: ffffffffb4485f31 RDI: ffffffffb3c50ce0
[   15.385347][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005eb667a
[   15.385349][    C3] R10: ffff88802f5b33d3 R11: 0000000000000000 R12: 0000000000000000
[   15.385350][    C3] R13: ffff888001bb4640 R14: dffffc0000000000 R15: 0000000000000000
[ 15.385354][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.385360][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.385362][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.385364][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.385368][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.385372][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 15.385377][ C3] do_idle (kernel/sched/idle.c:325) 
[ 15.385381][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.385385][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.385388][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 15.385394][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.401626][    C3] RCU nest depth: 0, expected: 0
| [   15.401805][    C3] INFO: lockdep is turned off.
| [   15.401985][    C3] Preemption disabled at:
| [ 15.401986][ C3] 0x0 
[   15.402315][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.402317][    C3] Call Trace:
[   15.402319][    C3]  <IRQ>
[ 15.402321][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.402330][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 15.402336][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.402341][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.402344][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 15.402349][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.402356][ C3] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 15.402361][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 15.402364][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.402369][ C3] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 15.402373][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.402376][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.402382][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.402385][ 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:2333) 
[ 15.402391][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.402395][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.402398][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.402402][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.402407][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.402412][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.402415][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.402418][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.402420][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.402426][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 15.402429][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.402432][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.402438][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 15.402445][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.402449][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 15.402453][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.402456][ C3] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.402460][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.402465][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.402469][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.402474][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.402477][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.402482][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.402485][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 15.402490][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.402492][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.402494][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.402498][    C3]  </IRQ>
[   15.402499][    C3]  <TASK>
[ 15.402500][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.402503][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.402507][ C3] Code: b0 b8 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 a3 d0 13 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	b0 b8                	mov    $0xb8,%al
   2:	00 c3                	add    %al,%bl
   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 a3 d0 13 00 	verw   0x13d0a3(%rip)        # 0x13d0cb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  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:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   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
[   15.402509][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000242
[   15.402512][    C3] RAX: 00000000000492e5 RBX: 1ffff9200002afc1 RCX: ffffffffb3955a19
[   15.402515][    C3] RDX: 0000000000000000 RSI: ffffffffb4485f31 RDI: ffffffffb3c50ce0
[   15.402517][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005eb667a
[   15.402518][    C3] R10: ffff88802f5b33d3 R11: 0000000000000000 R12: 0000000000000000
[   15.402521][    C3] R13: ffff888001bb4640 R14: dffffc0000000000 R15: 0000000000000000
[ 15.402525][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.402530][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.402532][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.402535][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.402538][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.402543][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 15.402548][ C3] do_idle (kernel/sched/idle.c:325) 
[ 15.402552][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.402555][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.402559][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 15.402564][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.196660][    C0] INFO: lockdep is turned off.
| [   17.196864][    C0] Preemption disabled at:
| [ 17.196865][ C0] __slab_alloc.constprop.0 (mm/slub.c:3945) 
| [   17.197291][    C0] Tainted: [W]=WARN
[   17.197292][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.197295][    C0] Call Trace:
[   17.197297][    C0]  <IRQ>
[ 17.197299][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.197308][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 17.197315][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.197320][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.197323][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 17.197329][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.197337][ C0] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 17.197342][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 17.197345][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.197351][ C0] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 17.197355][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.197358][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.197364][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.197367][ C0] ? __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:2333) 
[ 17.197374][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.197379][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.197382][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.197387][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 17.197392][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.197397][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.197401][ C0] ? get_partial_node.part.0 (mm/slub.c:2902) 
[ 17.197405][ C0] ? ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 17.197408][ C0] ? __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 17.197411][ C0] ? kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 17.197414][ C0] ? fuse_request_alloc (fs/fuse/dev.c:142) 
[ 17.197419][ C0] ? __fuse_simple_request (fs/fuse/dev.c:654) 
[ 17.197423][ C0] ? fuse_file_put (fs/fuse/file.c:98 fs/fuse/file.c:115 fs/fuse/file.c:102) 
[ 17.197427][ C0] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.197432][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.197437][ C0] __put_net (net/core/net_namespace.c:732) 
[ 17.197441][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 17.197445][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.197448][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.197452][ C0] ? clockevents_program_event (kernel/time/clockevents.c:326) 
[ 17.197455][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.197460][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.197464][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.197467][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.197474][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.197478][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 17.197483][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.197485][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.197488][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   17.197491][    C0]  </IRQ>
[   17.197492][    C0]  <TASK>
[ 17.197494][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.197496][ C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.197501][ C0] Code: 74 24 10 e8 91 3e 86 fd 48 89 ef e8 09 91 86 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> 2a 99 7a fd 65 8b 05 83 08 99 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:	91                   	xchg   %eax,%ecx
   5:	3e 86 fd             	ds xchg %bh,%ch
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 09 91 86 fd       	call   0xfffffffffd869119
  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 2a 99 7a fd       	call   0xfffffffffd7a9959		<-- trapping instruction
  2f:	65 8b 05 83 08 99 02 	mov    %gs:0x2990883(%rip),%eax        # 0x29908b9
  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 2a 99 7a fd       	call   0xfffffffffd7a992f
   5:	65 8b 05 83 08 99 02 	mov    %gs:0x2990883(%rip),%eax        # 0x299088f
   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
[   17.197504][    C0] RSP: 0018:ffffc90000a27b18 EFLAGS: 00000206
[   17.197508][    C0] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffb14354df
[   17.197510][    C0] RDX: 0000000000000000 RSI: ffffffffb3c50c60 RDI: 0000000000000001
[   17.197512][    C0] RBP: ffff888005bdb580 R08: 0000000000000000 R09: 0000000000000000
[   17.197514][    C0] R10: ffffffffb53d8197 R11: ffff88800a113a38 R12: ffff888005bdb580
[   17.197516][    C0] R13: ffffea000028d200 R14: ffff888005bd3e40 R15: ffff88800a348ac8
[ 17.197520][ C0] ? 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:587 ./include/linux/cpumask.h:1143 ./include/trace/events/preemptirq.h:40) 
[ 17.197525][ C0] get_partial_node.part.0 (mm/slub.c:2902) 
[ 17.197530][ C0] ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 17.197533][ C0] ? fuse_request_alloc (fs/fuse/dev.c:142) 
[ 17.197538][ C0] ? fuse_request_alloc (fs/fuse/dev.c:142) 
[ 17.197541][ C0] __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 17.197545][ C0] ? fuse_request_alloc (fs/fuse/dev.c:142) 
[ 17.197547][ C0] kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 17.197551][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 17.197555][ C0] fuse_request_alloc (fs/fuse/dev.c:142) 
[ 17.197558][ C0] __fuse_simple_request (fs/fuse/dev.c:654) 
[ 17.197563][ C0] fuse_file_put (fs/fuse/file.c:98 fs/fuse/file.c:115 fs/fuse/file.c:102) 
[ 17.197567][ C0] fuse_release (fs/fuse/file.c:383) 
[ 17.197572][ C0] __fput (fs/file_table.c:465) 
[ 17.197579][ C0] task_work_run (kernel/task_work.c:227 (discriminator 1)) 
[ 17.197586][ C0] ? __pfx_task_work_run (kernel/task_work.c:195) 
[ 17.197590][ C0] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 17.197594][ C0] do_exit (kernel/exit.c:954) 
[ 17.197600][ C0] do_group_exit (kernel/exit.c:1083) 
[ 17.197604][ C0] __x64_sys_exit_group (kernel/exit.c:1111) 
[ 17.197607][ C0] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 17.197616][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.197622][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   17.197624][    C0] RIP: 0033:0x7f6a3fb65abd
[ 17.197628][ C0] Code: Unable to access opcode bytes at 0x7f6a3fb65a93.

Code starting with the faulting instruction
===========================================
[   17.197629][    C0] RSP: 002b:00007ffc8e551368 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   17.197632][    C0] RAX: ffffffffffffffda RBX: 00007f6a3fc429c0 RCX: 00007f6a3fb65abd
[   17.197634][    C0] RDX: 00000000000000e7 RSI: ffffffffffffff80 RDI: 0000000000000000
[   17.197636][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000020
[   17.197638][    C0] R10: 00007ffc8e551210 R11: 0000000000000246 R12: 00007f6a3fc429c0


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