======================================
| [   15.820646][    C0] 1 lock held by swapper/0/0:
| [ 15.820851][ C0] #0: ffffffffadd749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   15.821218][    C0]
| [   15.821218][    C0] stack backtrace:
[   15.821477][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.821479][    C0] Call Trace:
[   15.821481][    C0]  <IRQ>
[ 15.821483][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.821489][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 15.821494][ C0] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 15.821498][ C0] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 15.821503][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 15.821506][ C0] ? save_trace (kernel/locking/lockdep.c:594) 
[ 15.821511][ C0] mark_lock (kernel/locking/lockdep.c:4754) 
[ 15.821515][ C0] mark_usage (kernel/locking/lockdep.c:4643) 
[ 15.821519][ C0] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 15.821524][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 15.821526][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.821530][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.821535][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 15.821537][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.821540][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 15.821543][ C0] ? simple_pin_fs (fs/libfs.c:1066) 
[ 15.821546][ C0] simple_pin_fs (fs/libfs.c:1066) 
[ 15.821549][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 15.821552][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.821557][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.821560][ 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:2366) 
[ 15.821565][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.821568][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.821571][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.821574][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.821578][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.821582][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.821585][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.821587][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.821590][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.821594][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.821597][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.821600][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.821603][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.821609][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.821612][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 15.821617][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.821620][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.821623][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.821627][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.821631][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.821635][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.821638][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.821643][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.821647][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.821652][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.821654][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.821656][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.821660][    C0]  </IRQ>
[   15.821661][    C0]  <TASK>
[ 15.821662][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.821665][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.821669][ C0] Code: 60 b8 00 e9 c3 57 02 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d c3 75 13 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	60                   	(bad)
   1:	b8 00 e9 c3 57       	mov    $0x57c3e900,%eax
   6:	02 00                	add    (%rax),%al
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d c3 75 13 00 	verw   0x1375c3(%rip)        # 0x1375eb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 
  39:	66 90                	xchg   %ax,%ax
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 
   f:	66 90                	xchg   %ax,%ax
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[   15.821672][    C0] RSP: 0018:ffffffffada07df8 EFLAGS: 00000242
[   15.821675][    C0] RAX: 0000000000073329 RBX: 1ffffffff5b40fc3 RCX: ffffffffacd5ba19
[   15.821677][    C0] RDX: 0000000000000000 RSI: ffffffffad887785 RDI: ffffffffad051260
[   15.821679][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   15.821681][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   15.821682][    C0] R13: ffffffffada1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.821686][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.821691][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.821693][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.821695][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.821699][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.821703][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 15.821710][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.821714][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.821717][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.821721][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.821725][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 15.821729][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 15.821733][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   15.840315][    C0] RCU nest depth: 0, expected: 0
| [   15.840504][    C0] INFO: lockdep is turned off.
| [   15.840828][    C0] Preemption disabled at:
| [ 15.840829][ C0] schedule_preempt_disabled (kernel/sched/core.c:6919) 
[   15.841273][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.841274][    C0] Call Trace:
[   15.841276][    C0]  <IRQ>
[ 15.841277][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 15.841283][ C0] __might_resched (kernel/sched/core.c:8819) 
[ 15.841289][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 15.841292][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 15.841295][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 15.841299][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 15.841305][ 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) 
[ 15.841309][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 15.841312][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 15.841316][ 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) 
[ 15.841320][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 15.841323][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 15.841328][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 15.841331][ 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:2366) 
[ 15.841336][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.841340][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 15.841343][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 15.841346][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 15.841350][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.841353][ C0] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.841357][ C0] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.841359][ C0] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.841362][ C0] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.841366][ C0] ? do_idle (kernel/sched/idle.c:325) 
[ 15.841369][ C0] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.841372][ C0] ? rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.841375][ C0] ? start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.841382][ C0] __put_net (net/core/net_namespace.c:732) 
[ 15.841385][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 15.841389][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 15.841392][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 15.841396][ C0] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 15.841400][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 15.841404][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.841408][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 15.841412][ C0] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.841417][ C0] rcu_core (kernel/rcu/tree.c:2826) 
[ 15.841420][ C0] handle_softirqs (kernel/softirq.c:579) 
[ 15.841425][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 15.841428][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 15.841430][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   15.841434][    C0]  </IRQ>
[   15.841435][    C0]  <TASK>
[ 15.841436][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 15.841439][ C0] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:81) 
[ 15.841443][ C0] Code: 60 b8 00 e9 c3 57 02 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d c3 75 13 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	60                   	(bad)
   1:	b8 00 e9 c3 57       	mov    $0x57c3e900,%eax
   6:	02 00                	add    (%rax),%al
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d c3 75 13 00 	verw   0x1375c3(%rip)        # 0x1375eb
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 
  39:	66 90                	xchg   %ax,%ax
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 
   f:	66 90                	xchg   %ax,%ax
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[   15.841446][    C0] RSP: 0018:ffffffffada07df8 EFLAGS: 00000242
[   15.841449][    C0] RAX: 0000000000073329 RBX: 1ffffffff5b40fc3 RCX: ffffffffacd5ba19
[   15.841451][    C0] RDX: 0000000000000000 RSI: ffffffffad887785 RDI: ffffffffad051260
[   15.841453][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0667a
[   15.841454][    C0] R10: ffff8880360333d3 R11: 0000000000000000 R12: 0000000000000000
[   15.841456][    C0] R13: ffffffffada1f240 R14: dffffc0000000000 R15: 0000000000014770
[ 15.841460][ C0] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 15.841464][ C0] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:748) 
[ 15.841467][ C0] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 15.841469][ C0] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 15.841473][ C0] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 15.841477][ C0] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:59) 
[ 15.841484][ C0] do_idle (kernel/sched/idle.c:325) 
[ 15.841488][ C0] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 15.841491][ C0] rest_init (./include/linux/rcupdate.h:842 init/main.c:714) 
[ 15.841495][ C0] start_kernel (init/main.c:1049 (discriminator 1)) 
[ 15.841499][ C0] x86_64_start_reservations (arch/x86/kernel/head64.c:501) 
[ 15.841503][ C0] x86_64_start_kernel (arch/x86/kernel/head64.c:443 (discriminator 17)) 
[ 15.841507][ C0] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [   17.760672][    C2] INFO: lockdep is turned off.
| [   17.760890][    C2] Preemption disabled at:
| [ 17.760892][ C2] handle_softirqs (kernel/softirq.c:553) 
| [   17.761325][    C2] Tainted: [W]=WARN
[   17.761326][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.761328][    C2] Call Trace:
[   17.761330][    C2]  <IRQ>
[ 17.761331][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.761338][ C2] __might_resched (kernel/sched/core.c:8819) 
[ 17.761344][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.761348][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.761352][ C2] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 17.761356][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.761362][ 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) 
[ 17.761367][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 17.761370][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.761375][ 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) 
[ 17.761379][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.761382][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.761387][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.761390][ 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:2366) 
[ 17.761395][ C2] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.761399][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.761402][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 17.761404][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 17.761409][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.761413][ C2] ? stack_access_ok (arch/x86/kernel/unwind_orc.c:389) 
[ 17.761418][ C2] ? unwind_next_frame (arch/x86/kernel/unwind_orc.c:403 arch/x86/kernel/unwind_orc.c:585) 
[ 17.761421][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 17.761425][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 17.761429][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 17.761434][ C2] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 17.761437][ C2] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3084) 
[ 17.761441][ C2] ? exit_mmap (mm/mmap.c:1311) 
[ 17.761446][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 17.761450][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.761455][ C2] __put_net (net/core/net_namespace.c:732) 
[ 17.761458][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 17.761462][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.761465][ C2] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.761470][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.761474][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.761478][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.761484][ C2] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.761487][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 17.761492][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 17.761494][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 17.761496][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   17.761500][    C2]  </IRQ>
[   17.761501][    C2]  <TASK>
[ 17.761502][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 17.761505][ C2] RIP: 0010:stack_access_ok (arch/x86/kernel/unwind_orc.c:389) 
[ 17.761509][ C2] Code: 8f 00 e9 bc fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 41 57 41 56 <41> 55 4c 8d 6f 08 41 54 49 89 d4 4c 89 ea 55 48 c1 ea 03 48 89 f5
All code
========
   0:	8f 00                	pop    (%rax)
   2:	e9 bc fe ff ff       	jmp    0xfffffffffffffec3
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   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:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  1c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  23:	fc ff df 
  26:	41 57                	push   %r15
  28:	41 56                	push   %r14
  2a:*	41 55                	push   %r13		<-- trapping instruction
  2c:	4c 8d 6f 08          	lea    0x8(%rdi),%r13
  30:	41 54                	push   %r12
  32:	49 89 d4             	mov    %rdx,%r12
  35:	4c 89 ea             	mov    %r13,%rdx
  38:	55                   	push   %rbp
  39:	48 c1 ea 03          	shr    $0x3,%rdx
  3d:	48 89 f5             	mov    %rsi,%rbp

Code starting with the faulting instruction
===========================================
   0:	41 55                	push   %r13
   2:	4c 8d 6f 08          	lea    0x8(%rdi),%r13
   6:	41 54                	push   %r12
   8:	49 89 d4             	mov    %rdx,%r12
   b:	4c 89 ea             	mov    %r13,%rdx
   e:	55                   	push   %rbp
   f:	48 c1 ea 03          	shr    $0x3,%rdx
  13:	48 89 f5             	mov    %rsi,%rbp
[   17.761512][    C2] RSP: 0018:ffffc900009c77d8 EFLAGS: 00000246
[   17.761515][    C2] RAX: dffffc0000000000 RBX: 1ffff92000138f07 RCX: 0000000000000001
[   17.761517][    C2] RDX: 0000000000000008 RSI: ffffc900009c7c38 RDI: ffffc900009c78f0
[   17.761519][    C2] RBP: 0000000000000001 R08: 0000000000000000 R09: ffffc900009c7931
[   17.761521][    C2] R10: ffffffffaa40c3f7 R11: ffffc900009c7930 R12: ffffc900009c7948
[   17.761523][    C2] R13: ffffc900009c78f0 R14: ffffffffaec83878 R15: ffffc900009c7c38
[ 17.761526][ C2] ? unwind_next_frame (./include/linux/rcupdate.h:331 ./include/linux/rcupdate.h:841 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 17.761533][ C2] unwind_next_frame (arch/x86/kernel/unwind_orc.c:403 arch/x86/kernel/unwind_orc.c:585) 
[ 17.761536][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 17.761540][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.761544][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 17.761549][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 17.761552][ C2] ? kernel_text_address (kernel/extable.c:99) 
[ 17.761557][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 17.761561][ C2] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 17.761566][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 17.761571][ C2] stack_trace_save (kernel/stacktrace.c:123) 
[ 17.761574][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 17.761579][ C2] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 17.761582][ C2] kasan_save_stack (mm/kasan/common.c:48) 
[ 17.761585][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 17.761589][ C2] ? mmput (kernel/fork.c:1447 kernel/fork.c:1382 kernel/fork.c:1402) 
[ 17.761593][ C2] ? exit_mm (kernel/exit.c:590) 
[ 17.761596][ C2] ? do_exit (kernel/exit.c:943) 
[ 17.761599][ C2] ? do_group_exit (kernel/exit.c:1083) 
[ 17.761602][ C2] ? __x64_sys_exit_group (kernel/exit.c:1111) 
[ 17.761604][ C2] ? x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 17.761610][ C2] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.761612][ C2] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 17.761615][ C2] ? stack_depot_save_flags (lib/stackdepot.c:552 lib/stackdepot.c:619) 
[ 17.761619][ 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) 
[ 17.761622][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 17.761625][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.761629][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.761632][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 17.761635][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.761639][ C2] ? debug_object_active_state (lib/debugobjects.c:1056) 
[ 17.761646][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.761649][ C2] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2127 arch/x86/mm/physaddr.c:65) 
[ 17.761652][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.761656][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 17.761659][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5879) 
[ 17.761662][ C2] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:104 ./include/linux/rcupdate.h:955 ./include/linux/mmzone.h:2127 arch/x86/mm/physaddr.c:65) 
[ 17.761665][ C2] kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 17.761668][ C2] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4672) 
[ 17.761672][ C2] __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3084) 
[ 17.761677][ C2] exit_mmap (mm/mmap.c:1311) 
[ 17.761680][ C2] ? __pfx_exit_mmap (mm/mmap.c:1259) 
[ 17.761683][ C2] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:727 kernel/locking/mutex.c:746) 
[ 17.761687][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5879) 
[ 17.761689][ C2] ? __mutex_unlock_slowpath (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4329 ./include/linux/atomic/atomic-long.h:1506 ./include/linux/atomic/atomic-instrumented.h:4481 kernel/locking/mutex.c:924) 
[ 17.761697][ C2] mmput (kernel/fork.c:1447 kernel/fork.c:1382 kernel/fork.c:1402) 
[ 17.761701][ C2] exit_mm (kernel/exit.c:590) 
[ 17.761704][ C2] do_exit (kernel/exit.c:943) 
[ 17.761708][ C2] do_group_exit (kernel/exit.c:1083) 
[ 17.761712][ C2] __x64_sys_exit_group (kernel/exit.c:1111) 
[ 17.761715][ C2] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 17.761718][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.761721][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   17.761723][    C2] RIP: 0033:0x7f20eabd8abd
[ 17.761727][ C2] Code: Unable to access opcode bytes at 0x7f20eabd8a93.

Code starting with the faulting instruction
===========================================
[   17.761728][    C2] RSP: 002b:00007ffc3da49c18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   17.761731][    C2] RAX: ffffffffffffffda RBX: 00007f20eacb59c0 RCX: 00007f20eabd8abd
[   17.761733][    C2] RDX: 00000000000000e7 RSI: ffffffffffffff80 RDI: 0000000000000000
[   17.761734][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000030
[   17.761736][    C2] R10: 00007ffc3da49aa0 R11: 0000000000000246 R12: 00007f20eacb59c0


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock
handle_softirqs:dump_stack_lvl:__might_resched:down_write:simple_recursive_removal
schedule_preempt_disabled:dump_stack_lvl:__might_resched:down_write:simple_recursive_removal