======================================
| [  443.819785][    C2] 1 lock held by swapper/2/0:
| [ 443.819973][ C2] #0: ffffc90000218d60 ((&icsk->icsk_retransmit_timer)){+.-.}-{0:0}, at: call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
| [  443.820350][    C2]
| [  443.820350][    C2] stack backtrace:
[  443.820588][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  443.820590][    C2] Call Trace:
[  443.820592][    C2]  <IRQ>
[ 443.820595][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 443.820600][ C2] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 443.820605][ C2] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 443.820609][ C2] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 443.820614][ C2] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 443.820616][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 443.820623][ C2] mark_lock (kernel/locking/lockdep.c:4754) 
[ 443.820626][ C2] mark_usage (kernel/locking/lockdep.c:4643) 
[ 443.820630][ C2] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 443.820634][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 443.820637][ C2] ? simple_pin_fs (fs/libfs.c:1066) 
[ 443.820640][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 443.820645][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 443.820647][ C2] ? simple_pin_fs (fs/libfs.c:1066) 
[ 443.820651][ C2] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 443.820653][ C2] ? simple_pin_fs (fs/libfs.c:1066) 
[ 443.820655][ C2] simple_pin_fs (fs/libfs.c:1066) 
[ 443.820658][ C2] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 443.820661][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 443.820666][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 443.820669][ 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) 
[ 443.820674][ C2] ? call_timer_fn (kernel/time/timer.c:1789) 
[ 443.820677][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 443.820679][ C2] ? handle_softirqs (kernel/softirq.c:579) 
[ 443.820682][ C2] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 443.820685][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 443.820689][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 443.820696][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 443.820700][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 443.820703][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 443.820707][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 443.820709][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 443.820713][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 443.820715][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 443.820720][ C2] __put_net (net/core/net_namespace.c:732) 
[ 443.820722][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 443.820726][ C2] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 443.820732][ C2] call_timer_fn (kernel/time/timer.c:1789) 
[ 443.820734][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 443.820737][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 443.820739][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1766) 
[ 443.820743][ C2] ? __run_timers (kernel/time/timer.c:1840 kernel/time/timer.c:2414) 
[ 443.820745][ C2] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 443.820749][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 443.820753][ C2] __run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414) 
[ 443.820756][ C2] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 443.820760][ C2] ? __downgrade_write (./include/linux/instrumented.h:82 (discriminator 20) ./include/linux/atomic/atomic-instrumented.h:3223 (discriminator 20) kernel/locking/rwsem.c:176 (discriminator 20) kernel/locking/rwsem.c:181 (discriminator 20) kernel/locking/rwsem.c:1396 (discriminator 20)) 
[ 443.820765][ C2] ? __pfx___run_timers (kernel/time/timer.c:2385) 
[ 443.820769][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 443.820773][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 443.820776][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 443.820778][ C2] ? run_timer_base (kernel/time/timer.c:2426 kernel/time/timer.c:2418 kernel/time/timer.c:2435) 
[ 443.820783][ C2] run_timer_base (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2435) 
[ 443.820785][ C2] run_timer_softirq (kernel/time/timer.c:2446) 
[ 443.820788][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 443.820793][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 443.820796][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 443.820798][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[  443.820801][    C2]  </IRQ>
[  443.820802][    C2]  <TASK>
[ 443.820804][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 443.820807][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 443.820811][ C2] Code: 00 b2 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 b0 0b 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:	00 b2 00 c3 cc cc    	add    %dh,-0x33333d00(%rdx)
   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 b0 0b 00 	verw   0xbb0a3(%rip)        # 0xbb0cb
  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
[  443.820813][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000242
[  443.820816][    C2] RAX: 0000000000a0e389 RBX: 1ffff92000028fc1 RCX: ffffffffa2bd7a19
[  443.820819][    C2] RDX: 0000000000000000 RSI: ffffffffa369c7ba RDI: ffffffffa2e55ce0
[  443.820820][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005ea667a
[  443.820822][    C2] R10: ffff88802f5333d3 R11: 0000000000000000 R12: 0000000000000000
[  443.820824][    C2] R13: ffff888001bba340 R14: dffffc0000000000 R15: 0000000000000000
[ 443.820827][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 443.820832][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 443.820836][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 443.820838][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 443.820841][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 443.820844][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 443.820849][ C2] do_idle (kernel/sched/idle.c:325) 
[ 443.820853][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 443.820855][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 443.820858][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 443.820862][ C2] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [  443.838542][    C2] RCU nest depth: 0, expected: 0
| [  443.838729][    C2] INFO: lockdep is turned off.
| [  443.838913][    C2] Preemption disabled at:
| [ 443.838915][ C2] 0x0 
[  443.839371][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  443.839373][    C2] Call Trace:
[  443.839375][    C2]  <IRQ>
[ 443.839378][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 443.839385][ C2] __might_resched (kernel/sched/core.c:8819) 
[ 443.839392][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 443.839396][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 443.839399][ C2] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 443.839403][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 443.839408][ 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) 
[ 443.839414][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 443.839416][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 443.839421][ 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) 
[ 443.839426][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 443.839429][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 443.839434][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 443.839437][ 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) 
[ 443.839442][ C2] ? call_timer_fn (kernel/time/timer.c:1789) 
[ 443.839446][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 443.839449][ C2] ? handle_softirqs (kernel/softirq.c:579) 
[ 443.839454][ C2] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 443.839456][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 443.839459][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 443.839464][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 443.839468][ C2] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 443.839471][ C2] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 443.839475][ C2] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 443.839478][ C2] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 443.839483][ C2] ? do_idle (kernel/sched/idle.c:325) 
[ 443.839487][ C2] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 443.839491][ C2] __put_net (net/core/net_namespace.c:732) 
[ 443.839494][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 443.839498][ C2] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 443.839503][ C2] call_timer_fn (kernel/time/timer.c:1789) 
[ 443.839506][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 443.839508][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 443.839510][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1766) 
[ 443.839514][ C2] ? __run_timers (kernel/time/timer.c:1840 kernel/time/timer.c:2414) 
[ 443.839517][ C2] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 443.839520][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 443.839524][ C2] __run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414) 
[ 443.839527][ C2] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 443.839532][ C2] ? __downgrade_write (./include/linux/instrumented.h:82 (discriminator 20) ./include/linux/atomic/atomic-instrumented.h:3223 (discriminator 20) kernel/locking/rwsem.c:176 (discriminator 20) kernel/locking/rwsem.c:181 (discriminator 20) kernel/locking/rwsem.c:1396 (discriminator 20)) 
[ 443.839536][ C2] ? __pfx___run_timers (kernel/time/timer.c:2385) 
[ 443.839539][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 443.839543][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 443.839547][ C2] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 443.839549][ C2] ? run_timer_base (kernel/time/timer.c:2426 kernel/time/timer.c:2418 kernel/time/timer.c:2435) 
[ 443.839554][ C2] run_timer_base (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2435) 
[ 443.839556][ C2] run_timer_softirq (kernel/time/timer.c:2446) 
[ 443.839559][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 443.839564][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 443.839567][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 443.839570][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[  443.839573][    C2]  </IRQ>
[  443.839574][    C2]  <TASK>
[ 443.839575][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 443.839578][ C2] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 443.839582][ C2] Code: 00 b2 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 b0 0b 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:	00 b2 00 c3 cc cc    	add    %dh,-0x33333d00(%rdx)
   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 b0 0b 00 	verw   0xbb0a3(%rip)        # 0xbb0cb
  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
[  443.839584][    C2] RSP: 0018:ffffc90000147de8 EFLAGS: 00000242
[  443.839588][    C2] RAX: 0000000000a0e389 RBX: 1ffff92000028fc1 RCX: ffffffffa2bd7a19
[  443.839590][    C2] RDX: 0000000000000000 RSI: ffffffffa369c7ba RDI: ffffffffa2e55ce0
[  443.839592][    C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005ea667a
[  443.839594][    C2] R10: ffff88802f5333d3 R11: 0000000000000000 R12: 0000000000000000
[  443.839595][    C2] R13: ffff888001bba340 R14: dffffc0000000000 R15: 0000000000000000
[ 443.839599][ C2] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 443.839604][ C2] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 443.839608][ C2] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 443.839610][ C2] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 443.839613][ C2] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 443.839616][ C2] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 443.839621][ C2] do_idle (kernel/sched/idle.c:325) 
[ 443.839624][ C2] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 443.839627][ C2] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 443.839630][ C2] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 443.839634][ C2] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [  484.772395][    C3] INFO: lockdep is turned off.
| [  484.772578][    C3] Preemption disabled at:
| [ 484.772580][ C3] __slab_alloc.constprop.0 (mm/slub.c:3945) 
| [  484.772965][    C3] Tainted: [W]=WARN
[  484.772966][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  484.772968][    C3] Call Trace:
[  484.772970][    C3]  <IRQ>
[ 484.772972][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 484.772979][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 484.772986][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 484.772989][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 484.772992][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 484.772996][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 484.773001][ 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) 
[ 484.773007][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 484.773010][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 484.773014][ 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) 
[ 484.773019][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 484.773022][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 484.773027][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 484.773030][ 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) 
[ 484.773035][ C3] ? call_timer_fn (kernel/time/timer.c:1789) 
[ 484.773039][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 484.773041][ C3] ? handle_softirqs (kernel/softirq.c:579) 
[ 484.773046][ C3] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 484.773049][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 484.773052][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 484.773056][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 484.773060][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 484.773064][ C3] ? get_partial_node.part.0 (mm/slub.c:2902) 
[ 484.773067][ C3] ? ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 484.773070][ C3] ? __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 484.773073][ C3] ? kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 484.773076][ C3] ? fuse_request_alloc (fs/fuse/dev.c:142) 
[ 484.773080][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 484.773084][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 484.773089][ C3] __put_net (net/core/net_namespace.c:732) 
[ 484.773091][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 484.773095][ C3] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 484.773102][ C3] call_timer_fn (kernel/time/timer.c:1789) 
[ 484.773104][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 484.773106][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 484.773109][ C3] ? __pfx_call_timer_fn (kernel/time/timer.c:1766) 
[ 484.773111][ C3] ? nohz_balance_exit_idle (kernel/sched/fair.c:12483) 
[ 484.773118][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 484.773121][ C3] __run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414) 
[ 484.773125][ C3] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 484.773130][ C3] ? __pfx___run_timers (kernel/time/timer.c:2385) 
[ 484.773132][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 484.773136][ C3] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5879) 
[ 484.773140][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 484.773143][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 484.773147][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 484.773149][ C3] ? run_timer_base (kernel/time/timer.c:2426 kernel/time/timer.c:2418 kernel/time/timer.c:2435) 
[ 484.773154][ C3] run_timer_base (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2435) 
[ 484.773156][ C3] run_timer_softirq (kernel/time/timer.c:2446) 
[ 484.773159][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 484.773164][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 484.773167][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 484.773170][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[  484.773173][    C3]  </IRQ>
[  484.773174][    C3]  <TASK>
[ 484.773175][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 484.773178][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 484.773182][ C3] Code: 74 24 10 e8 f1 42 7e fd 48 89 ef e8 69 95 7e 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> 8a 9d 72 fd 65 8b 05 83 78 95 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:	f1                   	int1
   5:	42 7e fd             	rex.X jle 0x5
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 69 95 7e fd       	call   0xfffffffffd7e9579
  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 8a 9d 72 fd       	call   0xfffffffffd729db9		<-- trapping instruction
  2f:	65 8b 05 83 78 95 02 	mov    %gs:0x2957883(%rip),%eax        # 0x29578b9
  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 8a 9d 72 fd       	call   0xfffffffffd729d8f
   5:	65 8b 05 83 78 95 02 	mov    %gs:0x2957883(%rip),%eax        # 0x295788f
   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
[  484.773185][    C3] RSP: 0018:ffffc90007127af8 EFLAGS: 00000206
[  484.773189][    C3] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffa066805f
[  484.773191][    C3] RDX: 0000000000000000 RSI: ffffffffa2e55c60 RDI: 0000000000000001
[  484.773193][    C3] RBP: ffff88800540d800 R08: 0000000000000000 R09: 0000000000000000
[  484.773194][    C3] R10: ffffffffa45f7b97 R11: 0000000000000000 R12: ffff88800540d800
[  484.773196][    C3] R13: ffffea0000478280 R14: ffff8880059481c0 R15: ffff888011e0bae8
[ 484.773200][ C3] ? 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) 
[ 484.773206][ C3] get_partial_node.part.0 (mm/slub.c:2902) 
[ 484.773211][ C3] ___slab_alloc (mm/slub.c:2863 mm/slub.c:2980 mm/slub.c:3838) 
[ 484.773214][ C3] ? fuse_request_alloc (fs/fuse/dev.c:142) 
[ 484.773219][ C3] ? fuse_request_alloc (fs/fuse/dev.c:142) 
[ 484.773221][ C3] __slab_alloc.constprop.0 (mm/slub.c:3948) 
[ 484.773225][ C3] ? fuse_request_alloc (fs/fuse/dev.c:142) 
[ 484.773228][ C3] kmem_cache_alloc_noprof (mm/slub.c:4023 mm/slub.c:4184 mm/slub.c:4203) 
[ 484.773232][ C3] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 484.773236][ C3] fuse_request_alloc (fs/fuse/dev.c:142) 
[ 484.773239][ C3] __fuse_simple_request (fs/fuse/dev.c:654) 
[ 484.773243][ C3] ? __up_write (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1375) 
[ 484.773245][ C3] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 484.773250][ C3] fuse_flush (fs/fuse/file.c:558) 
[ 484.773254][ C3] ? __pfx_fuse_flush (fs/fuse/file.c:517) 
[ 484.773257][ C3] ? ovl_verify_lowerdata (fs/overlayfs/namei.c:1024) 
[ 484.773263][ C3] ? __pfx_ovl_verify_lowerdata (fs/overlayfs/namei.c:1017) 
[ 484.773268][ C3] ? ovl_real_file (fs/overlayfs/file.c:195) 
[ 484.773274][ C3] ? __pfx_ovl_real_file (fs/overlayfs/file.c:175) 
[ 484.773279][ C3] ovl_flush (fs/overlayfs/file.c:649) 
[ 484.773282][ C3] filp_flush (fs/open.c:1541) 
[ 484.773286][ C3] __x64_sys_close (fs/open.c:1581 fs/open.c:1566 fs/open.c:1566) 
[ 484.773290][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 484.773295][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  484.773298][    C3] RIP: 0033:0x7f68c3f65e2b
[ 484.773301][ C3] Code: 77 05 c3 0f 1f 40 00 f7 d8 89 05 d0 f3 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 f7 d8 89 05 a0 f3 00 00 b8
All code
========
   0:	77 05                	ja     0x7
   2:	c3                   	ret
   3:	0f 1f 40 00          	nopl   0x0(%rax)
   7:	f7 d8                	neg    %eax
   9:	89 05 d0 f3 00 00    	mov    %eax,0xf3d0(%rip)        # 0xf3df
   f:	b8 ff ff ff ff       	mov    $0xffffffff,%eax
  14:	c3                   	ret
  15:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1c:	00 00 00 
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 03 00 00 00       	mov    $0x3,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 05                	ja     0x37
  32:	c3                   	ret
  33:	0f 1f 40 00          	nopl   0x0(%rax)
  37:	f7 d8                	neg    %eax
  39:	89 05 a0 f3 00 00    	mov    %eax,0xf3a0(%rip)        # 0xf3df
  3f:	b8                   	.byte 0xb8

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 05                	ja     0xd
   8:	c3                   	ret
   9:	0f 1f 40 00          	nopl   0x0(%rax)
   d:	f7 d8                	neg    %eax
   f:	89 05 a0 f3 00 00    	mov    %eax,0xf3a0(%rip)        # 0xf3b5
  15:	b8                   	.byte 0xb8
[  484.773304][    C3] RSP: 002b:00007ffd6dd888d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[  484.773306][    C3] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f68c3f65e2b
[  484.773308][    C3] RDX: 00007f68c3f2f2e8 RSI: 0000000000000004 RDI: 0000000000000005
[  484.773310][    C3] RBP: 00007ffd6dd88a30 R08: 00000000c0010001 R09: 0000000000000040
[  484.773311][    C3] R10: ffff80973c0d0d64 R11: 0000000000000246 R12: 00007f68c3f2f2e8
[  484.773313][    C3] R13: 00000000c0010001 R14: 00007f68c3f2f040 R15: 00007f68c3f34420
| [  554.408188][    C1] INFO: lockdep is turned off.
| [  554.408404][    C1] Preemption disabled at:
| [ 554.408406][ C1] 0x0 
| [  554.408763][    C1] Tainted: [W]=WARN
[  554.408764][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  554.408767][    C1] Call Trace:
[  554.408769][    C1]  <IRQ>
[ 554.408771][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 554.408781][ C1] __might_resched (kernel/sched/core.c:8819) 
[ 554.408791][ C1] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 554.408795][ C1] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 554.408797][ C1] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 554.408803][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 554.408809][ C1] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 554.408816][ C1] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 554.408819][ C1] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 554.408825][ C1] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 554.408830][ C1] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 554.408833][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 554.408839][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 554.408842][ C1] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 554.408849][ C1] ? call_timer_fn (kernel/time/timer.c:1789) 
[ 554.408853][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 554.408856][ C1] ? tmigr_handle_remote_up (kernel/time/timer_migration.c:1038) 
[ 554.408860][ C1] ? __walk_groups.isra.0 (kernel/time/timer_migration.c:533) 
[ 554.408866][ C1] ? tmigr_handle_remote (kernel/time/timer_migration.c:1096) 
[ 554.408868][ C1] ? handle_softirqs (kernel/softirq.c:579) 
[ 554.408875][ C1] ? __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 554.408877][ C1] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 554.408880][ C1] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 554.408886][ C1] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 554.408890][ C1] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 554.408895][ C1] ? qlist_free_all (mm/kasan/quarantine.c:174) 
[ 554.408902][ C1] ? kasan_quarantine_reduce (./include/linux/srcu.h:400 mm/kasan/quarantine.c:287) 
[ 554.408905][ C1] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 554.408911][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 554.408915][ C1] __put_net (net/core/net_namespace.c:732) 
[ 554.408919][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) 
[ 554.408922][ C1] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 554.408929][ C1] call_timer_fn (kernel/time/timer.c:1789) 
[ 554.408932][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 554.408934][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 554.408937][ C1] ? __pfx_call_timer_fn (kernel/time/timer.c:1766) 
[ 554.408939][ C1] ? __pfx___resched_curr (kernel/sched/core.c:1093) 
[ 554.408945][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 554.408949][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 554.408953][ C1] __run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414) 
[ 554.408957][ C1] ? __pfx_tcp_write_timer (net/ipv4/tcp_timer.c:727) 
[ 554.408962][ C1] ? __pfx___run_timers (kernel/time/timer.c:2385) 
[ 554.408966][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 554.408969][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 554.408973][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 554.408976][ C1] ? timer_expire_remote (kernel/time/timer.c:2426 kernel/time/timer.c:2418 kernel/time/timer.c:2177) 
[ 554.408981][ C1] timer_expire_remote (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2177) 
[ 554.408984][ C1] tmigr_handle_remote_cpu (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 kernel/time/timer_migration.c:961) 
[ 554.408988][ C1] ? __pfx_tmigr_handle_remote_cpu (kernel/time/timer_migration.c:905) 
[ 554.408991][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 554.408994][ C1] ? __pfx_call_timer_fn (kernel/time/timer.c:1766) 
[ 554.408998][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 554.409002][ C1] tmigr_handle_remote_up (kernel/time/timer_migration.c:1038) 
[ 554.409006][ C1] ? __pfx_tmigr_handle_remote_up (kernel/time/timer_migration.c:1005) 
[ 554.409008][ C1] __walk_groups.isra.0 (kernel/time/timer_migration.c:533) 
[ 554.409013][ C1] tmigr_handle_remote (kernel/time/timer_migration.c:1096) 
[ 554.409016][ C1] ? __pfx_tmigr_handle_remote (kernel/time/timer_migration.c:1059) 
[ 554.409018][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 554.409021][ C1] ? spin_bug (./include/linux/pid.h:232 kernel/locking/spinlock_debug.c:64 kernel/locking/spinlock_debug.c:78) 
[ 554.409025][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 554.409028][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 554.409032][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 554.409037][ C1] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 554.409040][ C1] irq_exit_rcu (kernel/softirq.c:698) 
[ 554.409043][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[  554.409046][    C1]  </IRQ>
[  554.409047][    C1]  <TASK>
[ 554.409049][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 554.409052][ C1] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 554.409057][ C1] Code: 74 24 10 e8 f1 42 7e fd 48 89 ef e8 69 95 7e 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> 8a 9d 72 fd 65 8b 05 83 78 95 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:	f1                   	int1
   5:	42 7e fd             	rex.X jle 0x5
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 69 95 7e fd       	call   0xfffffffffd7e9579
  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 8a 9d 72 fd       	call   0xfffffffffd729db9		<-- trapping instruction
  2f:	65 8b 05 83 78 95 02 	mov    %gs:0x2957883(%rip),%eax        # 0x29578b9
  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 8a 9d 72 fd       	call   0xfffffffffd729d8f
   5:	65 8b 05 83 78 95 02 	mov    %gs:0x2957883(%rip),%eax        # 0x295788f
   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
[  554.409059][    C1] RSP: 0018:ffffc900091778a8 EFLAGS: 00000206
[  554.409063][    C1] RAX: 0000000000000046 RBX: 0000000000000200 RCX: ffffffffa066805f
[  554.409065][    C1] RDX: 0000000000000000 RSI: ffffffffa2e55c60 RDI: 0000000000000001
[  554.409067][    C1] RBP: ffff8880019c0040 R08: 0000000000000000 R09: 0000000000000000
[  554.409069][    C1] R10: ffffffffa45f7b97 R11: ffffc900091776d8 R12: ffff888011ed6970
[  554.409071][    C1] R13: 0000000000000000 R14: ffffc900091778f8 R15: ffff8880094a8040
[ 554.409074][ C1] ? 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) 
[ 554.409081][ C1] qlist_free_all (mm/kasan/quarantine.c:174) 
[ 554.409085][ C1] kasan_quarantine_reduce (./include/linux/srcu.h:400 mm/kasan/quarantine.c:287) 
[ 554.409089][ C1] __kasan_slab_alloc (mm/kasan/common.c:329) 
[ 554.409093][ C1] kmem_cache_alloc_noprof (./include/linux/kasan.h:250 mm/slub.c:4147 mm/slub.c:4196 mm/slub.c:4203) 
[ 554.409099][ C1] ? vma_merge_new_range (mm/vma.c:1019) 
[ 554.409106][ C1] vm_area_alloc (kernel/fork.c:441) 
[ 554.409110][ C1] __mmap_region (mm/vma.c:2402 mm/vma.c:2519) 
[ 554.409115][ C1] ? __pfx___mmap_region (mm/vma.c:2499) 
[ 554.409120][ C1] ? mas_find (lib/maple_tree.c:6016) 
[ 554.409137][ C1] ? mm_get_unmapped_area_vmflags (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 mm/mmap.c:808) 
[ 554.409145][ C1] ? mmap_region (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 ./include/linux/mman.h:202 mm/vma.c:2581) 
[ 554.409149][ C1] do_mmap (mm/mmap.c:561) 
[ 554.409154][ C1] ? __pfx_do_mmap (mm/mmap.c:342) 
[ 554.409157][ C1] ? down_write_killable (./arch/x86/include/asm/preempt.h:104 kernel/locking/rwsem.c:1307 kernel/locking/rwsem.c:1318 kernel/locking/rwsem.c:1590) 
[ 554.409160][ C1] ? __pfx_down_write_killable (kernel/locking/rwsem.c:1586) 
[ 554.409162][ C1] ? __do_sys_newfstat (fs/stat.c:549) 
[ 554.409167][ C1] ? __pfx___do_sys_newfstat (fs/stat.c:544) 
[ 554.409171][ C1] vm_mmap_pgoff (mm/util.c:579) 
[ 554.409179][ C1] ? __pfx_vm_mmap_pgoff (mm/util.c:567) 
[ 554.409183][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 554.409187][ C1] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 554.409192][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  554.409195][    C1] RIP: 0033:0x7f60ebd1d116
[ 554.409198][ C1] Code: 5d 41 5c c3 f3 0f 1e fa 41 f7 c1 ff 0f 00 00 75 2b 55 48 89 fd 53 89 cb 48 85 ff 74 37 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 62 5b 5d c3 0f 1f 80 00 00 00 00 c7 05 ae f0
All code
========
   0:	5d                   	pop    %rbp
   1:	41 5c                	pop    %r12
   3:	c3                   	ret
   4:	f3 0f 1e fa          	endbr64
   8:	41 f7 c1 ff 0f 00 00 	test   $0xfff,%r9d
   f:	75 2b                	jne    0x3c
  11:	55                   	push   %rbp
  12:	48 89 fd             	mov    %rdi,%rbp
  15:	53                   	push   %rbx
  16:	89 cb                	mov    %ecx,%ebx
  18:	48 85 ff             	test   %rdi,%rdi
  1b:	74 37                	je     0x54
  1d:	41 89 da             	mov    %ebx,%r10d
  20:	48 89 ef             	mov    %rbp,%rdi
  23:	b8 09 00 00 00       	mov    $0x9,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 62                	ja     0x94
  32:	5b                   	pop    %rbx
  33:	5d                   	pop    %rbp
  34:	c3                   	ret
  35:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  3c:	c7                   	.byte 0xc7
  3d:	05                   	.byte 0x5
  3e:	ae                   	scas   %es:(%rdi),%al
  3f:	f0                   	lock

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 62                	ja     0x6a
   8:	5b                   	pop    %rbx
   9:	5d                   	pop    %rbp
   a:	c3                   	ret
   b:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  12:	c7                   	.byte 0xc7
  13:	05                   	.byte 0x5
  14:	ae                   	scas   %es:(%rdi),%al
  15:	f0                   	lock
[  554.409200][    C1] RSP: 002b:00007fff9c6d78d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
[  554.409203][    C1] RAX: ffffffffffffffda RBX: 0000000000000022 RCX: 00007f60ebd1d116
[  554.409205][    C1] RDX: 0000000000000003 RSI: 0000000000002000 RDI: 0000000000000000
[  554.409206][    C1] RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000
[  554.409208][    C1] R10: 0000000000000022 R11: 0000000000000246 R12: 00007f60ebc97fda


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