======================================
| [   14.422804][    C3] 1 lock held by swapper/3/0:
| [ 14.422987][ C3] #0: ffffffffa0174480 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   14.423328][    C3]
| [   14.423328][    C3] stack backtrace:
[   14.423562][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.423565][    C3] Call Trace:
[   14.423566][    C3]  <IRQ>
[ 14.423569][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.423574][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 14.423579][ C3] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 14.423584][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 14.423589][ C3] ? save_trace (kernel/locking/lockdep.c:594) 
[ 14.423594][ C3] mark_lock (kernel/locking/lockdep.c:4754) 
[ 14.423598][ C3] mark_usage (kernel/locking/lockdep.c:4643) 
[ 14.423601][ C3] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 14.423607][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 14.423610][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.423614][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.423620][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 14.423623][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.423627][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 14.423630][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.423634][ C3] simple_pin_fs (fs/libfs.c:1066) 
[ 14.423637][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 14.423640][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.423646][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.423649][ 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) 
[ 14.423654][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.423657][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.423660][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.423663][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.423667][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.423671][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.423674][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.423676][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.423678][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.423683][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 14.423685][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.423689][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.423693][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 14.423699][ C3] __put_net (net/core/net_namespace.c:732) 
[ 14.423703][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.423706][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.423709][ C3] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.423713][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 14.423717][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.423720][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.423724][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 14.423727][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.423732][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.423735][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 14.423740][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.423742][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.423744][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.423748][    C3]  </IRQ>
[   14.423749][    C3]  <TASK>
[ 14.423751][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.423753][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.423757][ 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
[   14.423760][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000242
[   14.423764][    C3] RAX: 0000000000044a3b RBX: 1ffff9200002afc1 RCX: ffffffff9f155a19
[   14.423766][    C3] RDX: 0000000000000000 RSI: ffffffff9fc85f31 RDI: ffffffff9f450ce0
[   14.423768][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3667a
[   14.423769][    C3] R10: ffff8880361b33d3 R11: 0000000000000000 R12: 0000000000000000
[   14.423771][    C3] R13: ffff888001bb4640 R14: dffffc0000000000 R15: 0000000000000000
[ 14.423775][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.423780][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.423782][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.423784][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.423788][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.423792][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 14.423797][ C3] do_idle (kernel/sched/idle.c:325) 
[ 14.423801][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.423804][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.423808][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 14.423813][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   14.438946][    C3] RCU nest depth: 0, expected: 0
| [   14.439115][    C3] INFO: lockdep is turned off.
| [   14.439285][    C3] Preemption disabled at:
| [ 14.439286][ C3] 0x0 
[   14.439585][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.439587][    C3] Call Trace:
[   14.439588][    C3]  <IRQ>
[ 14.439590][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.439595][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 14.439601][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 14.439604][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 14.439607][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 14.439610][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.439615][ 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) 
[ 14.439619][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 14.439621][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 14.439626][ 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) 
[ 14.439630][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 14.439633][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.439637][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.439640][ 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) 
[ 14.439644][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.439647][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.439650][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.439653][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.439657][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.439660][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.439664][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.439666][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.439668][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.439672][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 14.439675][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.439678][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.439682][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 14.439688][ C3] __put_net (net/core/net_namespace.c:732) 
[ 14.439691][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.439694][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.439697][ C3] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.439701][ C3] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 14.439705][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.439709][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.439713][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 14.439716][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 14.439721][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.439724][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 14.439732][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.439734][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.439736][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.439740][    C3]  </IRQ>
[   14.439741][    C3]  <TASK>
[ 14.439743][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.439745][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.439749][ 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
[   14.439751][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000242
[   14.439754][    C3] RAX: 0000000000044a3b RBX: 1ffff9200002afc1 RCX: ffffffff9f155a19
[   14.439756][    C3] RDX: 0000000000000000 RSI: ffffffff9fc85f31 RDI: ffffffff9f450ce0
[   14.439758][    C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3667a
[   14.439760][    C3] R10: ffff8880361b33d3 R11: 0000000000000000 R12: 0000000000000000
[   14.439762][    C3] R13: ffff888001bb4640 R14: dffffc0000000000 R15: 0000000000000000
[ 14.439765][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.439771][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.439773][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.439775][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.439779][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.439783][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 14.439788][ C3] do_idle (kernel/sched/idle.c:325) 
[ 14.439791][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.439795][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.439799][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 14.439804][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.006161][    C0] INFO: lockdep is turned off.
| [   16.006346][    C0] Preemption disabled at:
| [ 16.006348][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
| [   16.006788][    C0] Tainted: [W]=WARN
[   16.006790][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.006792][    C0] Call Trace:
[   16.006794][    C0]  <IRQ>
[ 16.006795][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.006801][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 16.006808][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.006811][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.006814][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 16.006818][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.006824][ 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) 
[ 16.006829][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 16.006831][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.006835][ 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) 
[ 16.006840][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.006843][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 16.006848][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.006851][ 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) 
[ 16.006856][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.006860][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.006863][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.006866][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 16.006870][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.006874][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 16.006877][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 16.006880][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.006882][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.006886][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 16.006889][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.006892][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.006895][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.006900][ C0] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 16.006904][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.006909][ C0] __put_net (net/core/net_namespace.c:732) 
[ 16.006912][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 16.006916][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.006919][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.006924][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 16.006927][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 16.006932][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.006938][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 16.006941][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 16.006946][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.006948][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.006951][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   16.006954][    C0]  </IRQ>
[   16.006955][    C0]  <TASK>
[ 16.006957][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.006959][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 16.006963][ C0] 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
[   16.006966][    C0] RSP: 0018:ffffffff9fe07df8 EFLAGS: 00000246
[   16.006970][    C0] RAX: 0000000000000000 RBX: 1ffffffff3fc0fc3 RCX: ffffffff9f155a19
[   16.006972][    C0] RDX: ffffed1006c0667b RSI: ffffffff9f450c60 RDI: ffffffff9c984d8f
[   16.006974][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c0667a
[   16.006975][    C0] R10: ffff8880360333d3 R11: ffffffffa2a2fba8 R12: 0000000000000000
[   16.006977][    C0] R13: ffffffff9fe1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 16.006981][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.006985][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.006990][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 16.006992][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.006994][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.006998][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.007002][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 16.007009][ C0] do_idle (kernel/sched/idle.c:325) 
[ 16.007013][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.007016][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.007019][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.007023][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 16.007028][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 


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
schedule_preempt_disabled:dump_stack_lvl:__might_resched:down_write:simple_recursive_removal