======================================
| [ 1955.605558][    C3] 1 lock held by ksoftirqd/3/32:
| [ 1955.605735][ C3] #0: ffffffffba38b540 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [ 1955.606046][    C3]
| [ 1955.606046][    C3] stack backtrace:
[ 1955.606264][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1955.606267][    C3] Call Trace:
[ 1955.606268][    C3]  <TASK>
[ 1955.606270][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1955.606278][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 1955.606283][ C3] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 1955.606287][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 1955.606291][ C3] ? save_trace (kernel/locking/lockdep.c:595) 
[ 1955.606297][ C3] mark_lock (kernel/locking/lockdep.c:4756) 
[ 1955.606301][ C3] mark_usage (kernel/locking/lockdep.c:4645) 
[ 1955.606304][ C3] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 1955.606308][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 1955.606311][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 1955.606314][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1955.606318][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1955.606320][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 1955.606324][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 1955.606327][ C3] ? simple_pin_fs (fs/libfs.c:1067) 
[ 1955.606329][ C3] simple_pin_fs (fs/libfs.c:1067) 
[ 1955.606332][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 1955.606336][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 1955.606342][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 1955.606345][ 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:2376) 
[ 1955.606351][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 1955.606354][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 1955.606357][ C3] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 1955.606363][ C3] ? kthread (kernel/kthread.c:464) 
[ 1955.606367][ C3] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 1955.606370][ C3] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 1955.606373][ C3] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2427) 
[ 1955.606377][ C3] ? __pfx_migrate_enable (kernel/sched/core.c:2402) 
[ 1955.606382][ C3] __put_net (net/core/net_namespace.c:732) 
[ 1955.606386][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 1955.606390][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1955.606393][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 1955.606397][ C3] ? __schedule (kernel/sched/core.c:6658) 
[ 1955.606402][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1955.606407][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1955.606409][ C3] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 1955.606412][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 1955.606419][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1955.606424][ C3] handle_softirqs (kernel/softirq.c:580) 
[ 1955.606429][ C3] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 1955.606432][ C3] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 1955.606435][ C3] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 1955.606438][ C3] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 1955.606442][ C3] kthread (kernel/kthread.c:464) 
[ 1955.606446][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 1955.606449][ C3] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 1955.606451][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 1955.606454][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1955.606456][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 1955.606460][ C3] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 1955.606463][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 1955.606466][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [ 1955.616869][    C3] RCU nest depth: 0, expected: 0
| [ 1955.617033][    C3] INFO: lockdep is turned off.
| [ 1955.617191][    C3] Preemption disabled at:
| [ 1955.617193][ C3] handle_softirqs (kernel/softirq.c:553) 
[ 1955.617513][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1955.617515][    C3] Call Trace:
[ 1955.617517][    C3]  <TASK>
[ 1955.617518][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1955.617525][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 1955.617533][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 1955.617537][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 1955.617539][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 1955.617543][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1955.617547][ 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) 
[ 1955.617552][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 1955.617555][ 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) 
[ 1955.617558][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 1955.617564][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 1955.617568][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 1955.617572][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 1955.617574][ 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:2376) 
[ 1955.617578][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 1955.617582][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 1955.617584][ C3] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 1955.617587][ C3] ? kthread (kernel/kthread.c:464) 
[ 1955.617591][ C3] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 1955.617594][ C3] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 1955.617597][ C3] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2427) 
[ 1955.617600][ C3] ? __pfx_migrate_enable (kernel/sched/core.c:2402) 
[ 1955.617606][ C3] __put_net (net/core/net_namespace.c:732) 
[ 1955.617610][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 1955.617613][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1955.617617][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 1955.617620][ C3] ? __schedule (kernel/sched/core.c:6658) 
[ 1955.617625][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1955.617630][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1955.617632][ C3] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 1955.617635][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 1955.617640][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1955.617644][ C3] handle_softirqs (kernel/softirq.c:580) 
[ 1955.617648][ C3] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 1955.617652][ C3] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 1955.617654][ C3] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 1955.617658][ C3] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 1955.617662][ C3] kthread (kernel/kthread.c:464) 
[ 1955.617665][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 1955.617668][ C3] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 1955.617670][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 1955.617674][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1955.617677][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 1955.617680][ C3] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 1955.617683][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 1955.617686][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [ 1956.722566][    C3] INFO: lockdep is turned off.
| [ 1956.722743][    C3] Preemption disabled at:
| [ 1956.722745][ C3] 0x0 
| [ 1956.723070][    C3] Tainted: [W]=WARN
[ 1956.723071][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1956.723073][    C3] Call Trace:
[ 1956.723075][    C3]  <IRQ>
[ 1956.723077][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1956.723085][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 1956.723092][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 1956.723096][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 1956.723098][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 1956.723104][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1956.723109][ 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) 
[ 1956.723114][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 1956.723117][ 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) 
[ 1956.723120][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 1956.723126][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 1956.723129][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 1956.723135][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 1956.723137][ 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:2376) 
[ 1956.723142][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 1956.723146][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 1956.723149][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 1956.723153][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1956.723157][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1956.723162][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 1956.723165][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 1956.723167][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 1956.723170][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1956.723174][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 1956.723176][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 1956.723178][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 1956.723184][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 1956.723191][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1956.723197][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1956.723201][ C3] __put_net (net/core/net_namespace.c:732) 
[ 1956.723206][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 1956.723209][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1956.723212][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 1956.723218][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1956.723223][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1956.723227][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1956.723232][ C3] handle_softirqs (kernel/softirq.c:580) 
[ 1956.723237][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1956.723240][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1956.723242][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1956.723246][    C3]  </IRQ>
[ 1956.723247][    C3]  <TASK>
[ 1956.723249][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1956.723251][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 1956.723255][ C3] Code: 92 d0 00 e9 03 55 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 63 97 22 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:	92                   	xchg   %eax,%edx
   1:	d0 00                	rolb   $1,(%rax)
   3:	e9 03 55 02 00       	jmp    0x2550b
   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 63 97 22 00 	verw   0x229763(%rip)        # 0x22978b
  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
[ 1956.723258][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[ 1956.723262][    C3] RAX: 0000000000000003 RBX: 1ffff9200002afc1 RCX: ffffffffb8c6a5f9
[ 1956.723264][    C3] RDX: ffffed100d9f66fb RSI: ffffffffb9056840 RDI: ffffffffb6199f6f
[ 1956.723265][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed100d9f66fa
[ 1956.723267][    C3] R10: ffff88806cfb37d3 R11: ffff888001b4cad8 R12: 0000000000000000
[ 1956.723268][    C3] R13: ffff888001b645c0 R14: dffffc0000000000 R15: 0000000000000000
[ 1956.723272][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 1956.723276][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1956.723280][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 1956.723282][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 1956.723285][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1956.723287][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 1956.723291][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 1956.723295][ C3] do_idle (kernel/sched/idle.c:325) 
[ 1956.723298][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 1956.723301][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 1956.723304][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 1956.723310][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [ 1957.818691][    C3] INFO: lockdep is turned off.
| [ 1957.818868][    C3] Preemption disabled at:
| [ 1957.818870][ C3] 0x0 
| [ 1957.819191][    C3] Tainted: [W]=WARN
[ 1957.819192][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1957.819194][    C3] Call Trace:
[ 1957.819196][    C3]  <IRQ>
[ 1957.819198][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1957.819206][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 1957.819213][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 1957.819217][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 1957.819220][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 1957.819224][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1957.819229][ 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) 
[ 1957.819234][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 1957.819237][ 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) 
[ 1957.819240][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 1957.819248][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 1957.819251][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 1957.819255][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 1957.819258][ 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:2376) 
[ 1957.819262][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 1957.819267][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 1957.819270][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 1957.819274][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1957.819278][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1957.819282][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 1957.819286][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 1957.819288][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 1957.819290][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1957.819293][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 1957.819295][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 1957.819298][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 1957.819303][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 1957.819307][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1957.819311][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1957.819316][ C3] __put_net (net/core/net_namespace.c:732) 
[ 1957.819320][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 1957.819324][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1957.819327][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 1957.819333][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1957.819337][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1957.819342][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1957.819348][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1957.819352][ C3] handle_softirqs (kernel/softirq.c:580) 
[ 1957.819357][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1957.819360][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1957.819363][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1957.819366][    C3]  </IRQ>
[ 1957.819368][    C3]  <TASK>
[ 1957.819369][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1957.819372][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 1957.819376][ C3] Code: 92 d0 00 e9 03 55 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 63 97 22 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:	92                   	xchg   %eax,%edx
   1:	d0 00                	rolb   $1,(%rax)
   3:	e9 03 55 02 00       	jmp    0x2550b
   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 63 97 22 00 	verw   0x229763(%rip)        # 0x22978b
  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
[ 1957.819378][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[ 1957.819382][    C3] RAX: 0000000000000003 RBX: 1ffff9200002afc1 RCX: ffffffffb8c6a5f9
[ 1957.819384][    C3] RDX: ffffed100d9f66fb RSI: ffffffffb9056840 RDI: ffffffffb6199f6f
[ 1957.819385][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed100d9f66fa
[ 1957.819387][    C3] R10: ffff88806cfb37d3 R11: ffffffffbce27290 R12: 0000000000000000
[ 1957.819389][    C3] R13: ffff888001b645c0 R14: dffffc0000000000 R15: 0000000000000000
[ 1957.819393][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 1957.819396][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1957.819400][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 1957.819402][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 1957.819405][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1957.819407][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 1957.819411][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 1957.819415][ C3] do_idle (kernel/sched/idle.c:325) 
[ 1957.819418][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 1957.819421][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 1957.819424][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 
[ 1957.819430][ C3] common_startup_64 (arch/x86/kernel/head_64.S:419) 
| [ 1958.945466][    C3] INFO: lockdep is turned off.
| [ 1958.945639][    C3] Preemption disabled at:
| [ 1958.945641][ C3] 0x0 
| [ 1958.945962][    C3] Tainted: [W]=WARN
[ 1958.945963][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1958.945965][    C3] Call Trace:
[ 1958.945967][    C3]  <IRQ>
[ 1958.945969][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1958.945977][ C3] __might_resched (kernel/sched/core.c:8796) 
[ 1958.945985][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 1958.945989][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 1958.945991][ C3] ? simple_recursive_removal (fs/libfs.c:614) 
[ 1958.945996][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1958.946001][ 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) 
[ 1958.946006][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 1958.946009][ 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) 
[ 1958.946012][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 1958.946019][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 1958.946022][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:412 lib/ref_tracker.c:196) 
[ 1958.946027][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:254) 
[ 1958.946030][ 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:2376) 
[ 1958.946035][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 1958.946039][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:190) 
[ 1958.946042][ C3] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 1958.946046][ C3] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1958.946050][ C3] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1958.946054][ C3] ? pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 1958.946057][ C3] ? default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 1958.946060][ C3] ? default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 1958.946062][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1958.946065][ C3] ? do_idle (kernel/sched/idle.c:325) 
[ 1958.946067][ C3] ? cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 1958.946069][ C3] ? start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 1958.946074][ C3] ? common_startup_64 (arch/x86/kernel/head_64.S:419) 
[ 1958.946078][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 1958.946083][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1958.946087][ C3] __put_net (net/core/net_namespace.c:732) 
[ 1958.946092][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 1958.946095][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1958.946099][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 1958.946104][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1958.946109][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 1958.946113][ C3] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1958.946119][ C3] rcu_core (kernel/rcu/tree.c:2834) 
[ 1958.946123][ C3] handle_softirqs (kernel/softirq.c:580) 
[ 1958.946129][ C3] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1958.946131][ C3] irq_exit_rcu (kernel/softirq.c:698) 
[ 1958.946134][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1958.946137][    C3]  </IRQ>
[ 1958.946138][    C3]  <TASK>
[ 1958.946140][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1958.946142][ C3] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 1958.946146][ C3] Code: 92 d0 00 e9 03 55 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 63 97 22 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:	92                   	xchg   %eax,%edx
   1:	d0 00                	rolb   $1,(%rax)
   3:	e9 03 55 02 00       	jmp    0x2550b
   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 63 97 22 00 	verw   0x229763(%rip)        # 0x22978b
  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
[ 1958.946149][    C3] RSP: 0018:ffffc90000157de8 EFLAGS: 00000246
[ 1958.946153][    C3] RAX: 0000000000000003 RBX: 1ffff9200002afc1 RCX: ffffffffb8c6a5f9
[ 1958.946155][    C3] RDX: ffffed100d9f66fb RSI: ffffffffb9056840 RDI: ffffffffb6199f6f
[ 1958.946156][    C3] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed100d9f66fa
[ 1958.946158][    C3] R10: ffff88806cfb37d3 R11: ffff888009b2a818 R12: 0000000000000000
[ 1958.946160][    C3] R13: ffff888001b645c0 R14: dffffc0000000000 R15: 0000000000000000
[ 1958.946164][ C3] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 1958.946168][ C3] ? cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1958.946172][ C3] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:743) 
[ 1958.946174][ C3] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 1958.946176][ C3] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1958.946179][ C3] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 1958.946183][ C3] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 1958.946187][ C3] do_idle (kernel/sched/idle.c:325) 
[ 1958.946190][ C3] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 1958.946193][ C3] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 1958.946196][ C3] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 


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
__might_resched:down_write:simple_recursive_removal:debugfs_remove:ref_tracker_dir_exit