======================================
| [   14.734740][    C2] 1 lock held by swapper/2/0:
| [ 14.734953][ C2] #0: ffffffffb2774480 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   14.735325][    C2]
| [   14.735325][    C2] stack backtrace:
[   14.735593][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.735595][    C2] Call Trace:
[   14.735597][    C2]  <IRQ>
[ 14.735599][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.735606][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 14.735611][ C2] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 14.735616][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 14.735623][ C2] ? save_trace (kernel/locking/lockdep.c:594) 
[ 14.735628][ C2] mark_lock (kernel/locking/lockdep.c:4754) 
[ 14.735632][ C2] mark_usage (kernel/locking/lockdep.c:4643) 
[ 14.735635][ C2] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 14.735640][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 14.735644][ C2] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.735648][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.735655][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 14.735659][ C2] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.735663][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 14.735666][ C2] ? simple_pin_fs (fs/libfs.c:1066) 
[ 14.735670][ C2] simple_pin_fs (fs/libfs.c:1066) 
[ 14.735674][ C2] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 14.735677][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.735683][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.735686][ 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:2333) 
[ 14.735693][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.735697][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.735699][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.735702][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.735706][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.735709][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.735712][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.735714][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.735717][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.735723][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 14.735726][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.735728][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.735735][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 14.735743][ C2] __put_net (net/core/net_namespace.c:732) 
[ 14.735747][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.735751][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.735754][ C2] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.735759][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.735762][ C2] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 14.735766][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.735770][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.735774][ C2] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.735777][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 14.735782][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.735784][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.735786][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.735790][    C2]  </IRQ>
[   14.735791][    C2]  <TASK>
[ 14.735792][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.735795][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.735799][ C2] 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
[   14.735802][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   14.735805][    C2] RAX: 000000000004477b RBX: 1ffff92000028fc1 RCX: ffffffffb1755a19
[   14.735807][    C2] RDX: 0000000000000000 RSI: ffffffffb2285f31 RDI: ffffffffb1a50ce0
[   14.735809][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2667a
[   14.735811][    C2] R10: ffff8880361333d3 R11: 0000000000000000 R12: 0000000000000000
[   14.735812][    C2] R13: ffff888001bb2340 R14: dffffc0000000000 R15: 0000000000000000
[ 14.735816][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.735821][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.735823][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.735826][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.735829][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.735833][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 14.735838][ C2] do_idle (kernel/sched/idle.c:325) 
[ 14.735842][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.735846][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.735849][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 14.735854][ C2] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   14.753432][    C2] RCU nest depth: 0, expected: 0
| [   14.753636][    C2] INFO: lockdep is turned off.
| [   14.753835][    C2] Preemption disabled at:
| [ 14.753836][ C2] 0x0 
[   14.754205][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.754207][    C2] Call Trace:
[   14.754208][    C2]  <IRQ>
[ 14.754210][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.754217][ C2] __might_resched (kernel/sched/core.c:8819) 
[ 14.754224][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 14.754228][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 14.754230][ C2] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 14.754235][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.754241][ 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) 
[ 14.754246][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 14.754248][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 14.754252][ 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) 
[ 14.754256][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 14.754259][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 14.754263][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 14.754266][ 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:2333) 
[ 14.754271][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.754275][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 14.754278][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 14.754282][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 14.754286][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.754290][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.754293][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.754295][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.754297][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.754301][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 14.754304][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.754307][ C2] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.754312][ C2] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 14.754318][ C2] __put_net (net/core/net_namespace.c:732) 
[ 14.754321][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 14.754325][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.754328][ C2] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 14.754333][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 14.754336][ C2] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 14.754341][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 14.754344][ C2] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 14.754350][ C2] rcu_core (kernel/rcu/tree.c:2826) 
[ 14.754353][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 14.754358][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 14.754360][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 14.754362][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   14.754366][    C2]  </IRQ>
[   14.754366][    C2]  <TASK>
[ 14.754368][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 14.754371][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 14.754374][ C2] 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
[   14.754377][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000246
[   14.754380][    C2] RAX: 000000000004477b RBX: 1ffff92000028fc1 RCX: ffffffffb1755a19
[   14.754382][    C2] RDX: 0000000000000000 RSI: ffffffffb2285f31 RDI: ffffffffb1a50ce0
[   14.754384][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2667a
[   14.754386][    C2] R10: ffff8880361333d3 R11: 0000000000000000 R12: 0000000000000000
[   14.754387][    C2] R13: ffff888001bb2340 R14: dffffc0000000000 R15: 0000000000000000
[ 14.754391][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 14.754396][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 14.754398][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 14.754401][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 14.754404][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 14.754408][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 14.754413][ C2] do_idle (kernel/sched/idle.c:325) 
[ 14.754417][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 14.754421][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 14.754424][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 14.754429][ C2] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   16.368209][    C0] INFO: lockdep is turned off.
| [   16.368407][    C0] Preemption disabled at:
| [ 16.368409][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
| [   16.368865][    C0] Tainted: [W]=WARN
[   16.368866][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   16.368868][    C0] Call Trace:
[   16.368870][    C0]  <IRQ>
[ 16.368872][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 16.368878][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 16.368883][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 16.368887][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 16.368889][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 16.368894][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.368900][ 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) 
[ 16.368905][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 16.368907][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 16.368912][ 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) 
[ 16.368916][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 16.368919][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 16.368923][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 16.368926][ 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) 
[ 16.368931][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.368935][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 16.368938][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 16.368942][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 16.368947][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.368950][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 16.368954][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 16.368956][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.368958][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.368962][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 16.368965][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.368968][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.368971][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.368976][ C0] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 16.368981][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.368986][ C0] __put_net (net/core/net_namespace.c:732) 
[ 16.368989][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 16.368993][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.368996][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 16.369001][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 16.369005][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 16.369010][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 16.369013][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 16.369018][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 16.369021][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 16.369023][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   16.369026][    C0]  </IRQ>
[   16.369027][    C0]  <TASK>
[ 16.369029][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 16.369031][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 16.369035][ 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
[   16.369038][    C0] RSP: 0018:ffffffffb2407df8 EFLAGS: 00000246
[   16.369041][    C0] RAX: 0000000000000000 RBX: 1ffffffff6480fc3 RCX: ffffffffb1755a19
[   16.369043][    C0] RDX: ffffed1006c0667b RSI: ffffffffb1a50c60 RDI: ffffffffaef84d8f
[   16.369045][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed1006c0667a
[   16.369047][    C0] R10: ffff8880360333d3 R11: ffff888001b9cb58 R12: 0000000000000000
[   16.369049][    C0] R13: ffffffffb241f240 R14: dffffc0000000000 R15: 0000000000014770
[ 16.369052][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 16.369056][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.369061][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 16.369063][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 16.369065][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 16.369069][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 16.369073][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 16.369079][ C0] do_idle (kernel/sched/idle.c:325) 
[ 16.369083][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 16.369086][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 16.369089][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 16.369093][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 16.369098][ 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