======================================
| [   15.128950][    C3] 1 lock held by swapper/3/0:
| [ 15.129143][ C3] #0: ffffffffaa7749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   15.129483][    C3]
| [   15.129483][    C3] stack backtrace:
[   15.129719][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.129721][    C3] Call Trace:
[   15.129723][    C3]  <IRQ>
[ 15.129726][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.129733][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 15.129738][ C3] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 15.129743][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 15.129750][ C3] ? save_trace (kernel/locking/lockdep.c:594) 
[ 15.129754][ C3] mark_lock (kernel/locking/lockdep.c:4754) 
[ 15.129759][ C3] mark_usage (kernel/locking/lockdep.c:4643) 
[ 15.129762][ C3] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 15.129768][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 15.129770][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.129773][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.129780][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 15.129782][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.129785][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.129789][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.129791][ C3] simple_pin_fs (fs/libfs.c:1066) 
[ 15.129794][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.129797][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.129803][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.129806][ 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:2366) 
[ 15.129813][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.129816][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.129819][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.129822][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.129826][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.129830][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.129833][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.129835][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.129838][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.129843][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 15.129846][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.129849][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.129853][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 15.129859][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.129864][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 15.129867][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.129870][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.129874][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.129878][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.129882][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.129886][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.129890][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.129895][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.129899][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 15.129904][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.129906][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.129909][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.129912][    C3]  </IRQ>
[   15.129913][    C3]  <TASK>
[ 15.129915][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.129917][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.129922][ C3] Code: 60 b8 00 e9 c3 57 02 00 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 c3 75 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:	60                   	(bad)
   1:	b8 00 e9 c3 57       	mov    $0x57c3e900,%eax
   6:	02 00                	add    (%rax),%al
   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 c3 75 13 00 	verw   0x1375c3(%rip)        # 0x1375eb
  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
[   15.129925][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000242
[   15.129928][    C3] RAX: 000000000004108f RBX: 1ffff9200002afc1 RCX: ffffffffa975ba19
[   15.129930][    C3] RDX: 0000000000000000 RSI: ffffffffaa287785 RDI: ffffffffa9a51260
[   15.129932][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3667a
[   15.129934][    C3] R10: ffff8880361b33d3 R11: 0000000000000000 R12: 0000000000000000
[   15.129935][    C3] R13: ffff888001bf4640 R14: dffffc0000000000 R15: 0000000000000000
[ 15.129939][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.129944][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.129947][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.129949][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.129953][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.129958][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 15.129962][ C3] do_idle (kernel/sched/idle.c:325) 
[ 15.129966][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.129970][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.129974][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 15.129979][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.145579][    C3] RCU nest depth: 0, expected: 0
| [   15.145762][    C3] INFO: lockdep is turned off.
| [   15.145938][    C3] Preemption disabled at:
| [ 15.145940][ C3] 0x0 
[   15.146260][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.146261][    C3] Call Trace:
[   15.146263][    C3]  <IRQ>
[ 15.146265][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.146273][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 15.146281][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.146286][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.146289][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 15.146295][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.146302][ 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) 
[ 15.146307][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 15.146310][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.146314][ 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) 
[ 15.146319][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.146322][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.146327][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.146330][ 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:2366) 
[ 15.146335][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.146340][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.146343][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.146347][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.146352][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.146356][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.146359][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.146362][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.146364][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.146369][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 15.146372][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.146375][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.146382][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 15.146388][ C3] __put_net (net/core/net_namespace.c:732) 
[ 15.146392][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 15.146396][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.146399][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.146403][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.146408][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.146411][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.146416][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.146420][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.146424][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.146429][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 15.146434][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.146437][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.146439][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.146443][    C3]  </IRQ>
[   15.146444][    C3]  <TASK>
[ 15.146445][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.146448][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.146452][ C3] Code: 60 b8 00 e9 c3 57 02 00 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 c3 75 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:	60                   	(bad)
   1:	b8 00 e9 c3 57       	mov    $0x57c3e900,%eax
   6:	02 00                	add    (%rax),%al
   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 c3 75 13 00 	verw   0x1375c3(%rip)        # 0x1375eb
  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
[   15.146455][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000242
[   15.146458][    C3] RAX: 000000000004108f RBX: 1ffff9200002afc1 RCX: ffffffffa975ba19
[   15.146460][    C3] RDX: 0000000000000000 RSI: ffffffffaa287785 RDI: ffffffffa9a51260
[   15.146462][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3667a
[   15.146464][    C3] R10: ffff8880361b33d3 R11: 0000000000000000 R12: 0000000000000000
[   15.146465][    C3] R13: ffff888001bf4640 R14: dffffc0000000000 R15: 0000000000000000
[ 15.146469][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.146475][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.146477][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.146480][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.146484][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.146488][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 15.146493][ C3] do_idle (kernel/sched/idle.c:325) 
[ 15.146497][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.146501][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 15.146504][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 15.146509][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.787327][    C3] INFO: lockdep is turned off.
| [   16.787511][    C3] Preemption disabled at:
| [ 16.787513][ C3] 0x0 
| [   16.787856][    C3] Tainted: [W]=WARN
[   16.787858][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.787861][    C3] Call Trace:
[   16.787863][    C3]  <IRQ>
[ 16.787865][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.787875][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 16.787883][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.787889][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.787892][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 16.787899][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.787907][ 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) 
[ 16.787913][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 16.787920][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.787925][ 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) 
[ 16.787930][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.787933][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 16.787940][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.787943][ 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:2366) 
[ 16.787950][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 16.787955][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.787958][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.787963][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 16.787969][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.787973][ C3] ? page_ref_add_unless.constprop.0 (./include/linux/atomic/atomic-arch-fallback.h:2429 ./include/linux/atomic/atomic-arch-fallback.h:2456 ./include/linux/atomic/atomic-instrumented.h:1518 ./include/linux/page_ref.h:238) 
[ 16.787981][ C3] ? next_uptodate_folio (mm/filemap.c:3563) 
[ 16.787984][ C3] ? filemap_map_pages (mm/filemap.c:3746) 
[ 16.787987][ C3] ? do_fault_around (mm/memory.c:5476) 
[ 16.787993][ C3] ? do_pte_missing (mm/memory.c:5509 mm/memory.c:5652 mm/memory.c:4160) 
[ 16.787997][ C3] ? handle_pte_fault (mm/memory.c:5997) 
[ 16.788000][ C3] ? __handle_mm_fault (mm/memory.c:6140) 
[ 16.788002][ C3] ? handle_mm_fault (mm/memory.c:6321) 
[ 16.788005][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 16.788010][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.788015][ C3] __put_net (net/core/net_namespace.c:732) 
[ 16.788019][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 16.788023][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.788026][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 16.788031][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 16.788035][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.788038][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 16.788045][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 16.788050][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 16.788054][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.788057][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.788059][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   16.788063][    C3]  </IRQ>
[   16.788064][    C3]  <TASK>
[ 16.788066][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.788068][ C3] RIP: 0010:page_ref_add_unless.constprop.0 (./include/linux/atomic/atomic-arch-fallback.h:2429 ./include/linux/atomic/atomic-arch-fallback.h:2456 ./include/linux/atomic/atomic-instrumented.h:1518 ./include/linux/page_ref.h:238) 
[ 16.788073][ C3] Code: 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f 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
All code
========
   0:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   7:	fc ff df 
   a:	48 c1 ea 03          	shr    $0x3,%rdx
   e:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
  12:	48 89 d8             	mov    %rbx,%rax
  15:	83 e0 07             	and    $0x7,%eax
  18:	83 c0 03             	add    $0x3,%eax
  1b:	38 d0                	cmp    %dl,%al
  1d:	7c 08                	jl     0x27
  1f:	84 d2                	test   %dl,%dl
  21:	0f 85 cb 01 00 00    	jne    0x1f2
  27:	8b 45 34             	mov    0x34(%rbp),%eax
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 84 02 01 00 00    	je     0x134
  32:	8d 50 01             	lea    0x1(%rax),%edx
  35:	f0 0f b1 13          	lock cmpxchg %edx,(%rbx)
  39:	41 0f 94 c4          	sete   %r12b
  3d:	45 84 e4             	test   %r12b,%r12b

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 84 02 01 00 00    	je     0x10a
   8:	8d 50 01             	lea    0x1(%rax),%edx
   b:	f0 0f b1 13          	lock cmpxchg %edx,(%rbx)
   f:	41 0f 94 c4          	sete   %r12b
  13:	45 84 e4             	test   %r12b,%r12b
[   16.788076][    C3] RSP: 0000:ffffc900007d7998 EFLAGS: 00000246
[   16.788080][    C3] RAX: 0000000000000001 RBX: ffffea00009b6934 RCX: ffffffffa74fa843
[   16.788082][    C3] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffea00009b6934
[   16.788084][    C3] RBP: ffffea00009b6900 R08: 0000000000000001 R09: fffff94000136d26
[   16.788086][    C3] R10: ffffea00009b6937 R11: 0000000000000000 R12: dffffc0000000000
[   16.788088][    C3] R13: ffffea00009b6900 R14: 1ffff920000faf5f R15: ffffc900007d7af8
[ 16.788092][ 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) 
[ 16.788097][ 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) 
[ 16.788100][ C3] next_uptodate_folio (mm/filemap.c:3563) 
[ 16.788105][ C3] filemap_map_pages (mm/filemap.c:3746) 
[ 16.788113][ C3] ? __pfx_filemap_map_pages (mm/filemap.c:3692) 
[ 16.788118][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.788122][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 16.788124][ C3] ? do_fault_around (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 mm/memory.c:5475) 
[ 16.788128][ C3] ? __pfx_filemap_map_pages (mm/filemap.c:3692) 
[ 16.788131][ C3] do_fault_around (mm/memory.c:5476) 
[ 16.788134][ C3] ? ___pte_offset_map (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 mm/pgtable-generic.c:287) 
[ 16.788141][ C3] do_pte_missing (mm/memory.c:5509 mm/memory.c:5652 mm/memory.c:4160) 
[ 16.788144][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 16.788151][ C3] handle_pte_fault (mm/memory.c:5997) 
[ 16.788155][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.788159][ C3] ? __pfx_handle_pte_fault (mm/memory.c:5954) 
[ 16.788162][ C3] ? __might_fault (mm/memory.c:7151 mm/memory.c:7145) 
[ 16.788165][ C3] ? __might_fault (mm/memory.c:7151 mm/memory.c:7145) 
[ 16.788168][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.788171][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 16.788175][ C3] __handle_mm_fault (mm/memory.c:6140) 
[ 16.788178][ C3] ? __pfx___handle_mm_fault (mm/memory.c:6049) 
[ 16.788181][ C3] ? rcu_read_unlock (./include/linux/rcupdate.h:341 (discriminator 9) ./include/linux/rcupdate.h:871 (discriminator 9)) 
[ 16.788187][ C3] ? __pfx_lock_vma_under_rcu (mm/memory.c:6547) 
[ 16.788191][ C3] handle_mm_fault (mm/memory.c:6321) 
[ 16.788194][ C3] ? __pfx_handle_mm_fault (mm/memory.c:6276) 
[ 16.788199][ C3] do_user_addr_fault (arch/x86/mm/fault.c:1338) 
[ 16.788206][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.788211][ 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:1488 arch/x86/mm/fault.c:1538) 
[ 16.788215][ C3] asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623) 
[   16.788217][    C3] RIP: 0033:0x562253ef1360
[ 16.788220][ C3] Code: 83 f8 04 75 06 80 78 0c 7f 75 df 48 85 d2 74 03 48 89 02 44 89 d8 5b c3 66 90 41 83 f8 01 75 e5 eb e9 b8 ff ff ff ff c3 66 90 <f3> 0f 1e fa 41 54 41 89 f4 55 89 fd 53 48 89 d3 48 83 ec 10 64 48
All code
========
   0:	83 f8 04             	cmp    $0x4,%eax
   3:	75 06                	jne    0xb
   5:	80 78 0c 7f          	cmpb   $0x7f,0xc(%rax)
   9:	75 df                	jne    0xffffffffffffffea
   b:	48 85 d2             	test   %rdx,%rdx
   e:	74 03                	je     0x13
  10:	48 89 02             	mov    %rax,(%rdx)
  13:	44 89 d8             	mov    %r11d,%eax
  16:	5b                   	pop    %rbx
  17:	c3                   	ret
  18:	66 90                	xchg   %ax,%ax
  1a:	41 83 f8 01          	cmp    $0x1,%r8d
  1e:	75 e5                	jne    0x5
  20:	eb e9                	jmp    0xb
  22:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
  27:	c3                   	ret
  28:	66 90                	xchg   %ax,%ax
  2a:*	f3 0f 1e fa          	endbr64		<-- trapping instruction
  2e:	41 54                	push   %r12
  30:	41 89 f4             	mov    %esi,%r12d
  33:	55                   	push   %rbp
  34:	89 fd                	mov    %edi,%ebp
  36:	53                   	push   %rbx
  37:	48 89 d3             	mov    %rdx,%rbx
  3a:	48 83 ec 10          	sub    $0x10,%rsp
  3e:	64                   	fs
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	f3 0f 1e fa          	endbr64
   4:	41 54                	push   %r12
   6:	41 89 f4             	mov    %esi,%r12d
   9:	55                   	push   %rbp
   a:	89 fd                	mov    %edi,%ebp
   c:	53                   	push   %rbx
   d:	48 89 d3             	mov    %rdx,%rbx
  10:	48 83 ec 10          	sub    $0x10,%rsp
  14:	64                   	fs
  15:	48                   	rex.W
[   16.788222][    C3] RSP: 002b:00007ffcdd258ac8 EFLAGS: 00010202
[   16.788225][    C3] RAX: 0000000000000000 RBX: 00000000000000d9 RCX: 0000000000000000
[   16.788226][    C3] RDX: 00007ffcdd258af4 RSI: 0000000000000001 RDI: 00000000000000d9
[   16.788228][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
[   16.788229][    C3] R10: 0000000000000000 R11: 0000000000000008 R12: 0000000000000000


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