======================================
| [   17.843979][    C3] 1 lock held by ksoftirqd/3/32:
| [ 17.844177][ C3] #0: ffffffffa13749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) 
| [   17.844539][    C3]
| [   17.844539][    C3] stack backtrace:
[   17.844795][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.844798][    C3] Call Trace:
[   17.844800][    C3]  <TASK>
[ 17.844803][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.844810][ C3] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) 
[ 17.844818][ C3] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) 
[ 17.844823][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 17.844830][ C3] ? save_trace (kernel/locking/lockdep.c:594) 
[ 17.844835][ C3] mark_lock (kernel/locking/lockdep.c:4754) 
[ 17.844839][ C3] mark_usage (kernel/locking/lockdep.c:4643) 
[ 17.844843][ C3] __lock_acquire (kernel/locking/lockdep.c:5189) 
[ 17.844849][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) 
[ 17.844851][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 17.844856][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.844863][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) 
[ 17.844865][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 17.844868][ C3] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 17.844872][ C3] ? simple_pin_fs (fs/libfs.c:1066) 
[ 17.844874][ C3] simple_pin_fs (fs/libfs.c:1066) 
[ 17.844877][ C3] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 17.844882][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.844888][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.844891][ 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:2366) 
[ 17.844898][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.844902][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.844904][ C3] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 17.844909][ C3] ? kthread (kernel/kthread.c:464) 
[ 17.844914][ C3] ? ret_from_fork (arch/x86/kernel/process.c:153) 
[ 17.844917][ C3] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 17.844921][ C3] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2417) 
[ 17.844927][ C3] ? __pfx_migrate_enable (kernel/sched/core.c:2392) 
[ 17.844933][ C3] __put_net (net/core/net_namespace.c:732) 
[ 17.844938][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 17.844943][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.844946][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.844951][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.844955][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.844958][ C3] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 17.844963][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 17.844970][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.844974][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 17.844979][ C3] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 17.844982][ C3] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 17.844985][ C3] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 17.844988][ C3] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 17.844992][ C3] kthread (kernel/kthread.c:464) 
[ 17.844995][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 17.844998][ C3] ? ret_from_fork (arch/x86/kernel/process.c:152) 
[ 17.845000][ C3] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 17.845003][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.845007][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 17.845010][ C3] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 17.845013][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 17.845016][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [   17.864383][    C3] RCU nest depth: 0, expected: 0
| [   17.864664][    C3] INFO: lockdep is turned off.
| [   17.865123][    C3] Preemption disabled at:
| [ 17.865126][ C3] handle_softirqs (kernel/softirq.c:553) 
[   17.865715][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.865719][    C3] Call Trace:
[   17.865722][    C3]  <TASK>
[ 17.865726][ C3] dump_stack_lvl (lib/dump_stack.c:123) 
[ 17.865738][ C3] __might_resched (kernel/sched/core.c:8819) 
[ 17.865749][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 17.865755][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 17.865760][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 17.865768][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.865778][ 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) 
[ 17.865786][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 17.865790][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 17.865796][ 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) 
[ 17.865805][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 17.865810][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 17.865818][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 17.865823][ 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:2366) 
[ 17.865831][ C3] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.865839][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 17.865844][ C3] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 17.865850][ C3] ? kthread (kernel/kthread.c:464) 
[ 17.865856][ C3] ? ret_from_fork (arch/x86/kernel/process.c:153) 
[ 17.865860][ C3] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 17.865869][ C3] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2417) 
[ 17.865877][ C3] ? __pfx_migrate_enable (kernel/sched/core.c:2392) 
[ 17.865888][ C3] __put_net (net/core/net_namespace.c:732) 
[ 17.865894][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 17.865900][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 17.865906][ C3] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 17.865916][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 17.865923][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.865928][ C3] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) 
[ 17.865933][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 17.865944][ C3] rcu_core (kernel/rcu/tree.c:2826) 
[ 17.865951][ C3] handle_softirqs (kernel/softirq.c:579) 
[ 17.865958][ C3] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) 
[ 17.865964][ C3] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
[ 17.865967][ C3] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
[ 17.865973][ C3] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) 
[ 17.865980][ C3] kthread (kernel/kthread.c:464) 
[ 17.865986][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 17.865991][ C3] ? ret_from_fork (arch/x86/kernel/process.c:152) 
[ 17.865994][ C3] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 17.866000][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 17.866005][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 17.866012][ C3] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 17.866016][ C3] ? __pfx_kthread (kernel/kthread.c:413) 
[ 17.866021][ C3] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [   20.391144][    C2] INFO: lockdep is turned off.
| [   20.391370][    C2] Preemption disabled at:
| [ 20.391372][ C2] handle_softirqs (kernel/softirq.c:553) 
| [   20.391848][    C2] Tainted: [W]=WARN
[   20.391850][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.391852][    C2] Call Trace:
[   20.391854][    C2]  <IRQ>
[ 20.391856][ C2] dump_stack_lvl (lib/dump_stack.c:123) 
[ 20.391866][ C2] __might_resched (kernel/sched/core.c:8819) 
[ 20.391873][ C2] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 20.391879][ C2] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 20.391883][ C2] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) 
[ 20.391889][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 20.391898][ 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) 
[ 20.391904][ C2] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) 
[ 20.391907][ C2] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 20.391913][ 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) 
[ 20.391917][ C2] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 20.391920][ C2] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) 
[ 20.391927][ C2] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 20.391930][ 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) 
[ 20.391939][ C2] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 20.391944][ C2] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 20.391947][ C2] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 20.391949][ C2] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[ 20.391955][ C2] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.391960][ C2] ? stack_access_ok (arch/x86/kernel/unwind_orc.c:398) 
[ 20.391967][ C2] ? unwind_next_frame (arch/x86/kernel/unwind_orc.c:403 arch/x86/kernel/unwind_orc.c:585) 
[ 20.391970][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 20.391976][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 20.391982][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 20.391989][ C2] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.391994][ 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) 
[ 20.391999][ C2] ? kmem_cache_free (./include/linux/kmemleak.h:49 mm/slub.c:2305 mm/slub.c:4642 mm/slub.c:4744) 
[ 20.392006][ C2] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) 
[ 20.392012][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 20.392017][ C2] __put_net (net/core/net_namespace.c:732) 
[ 20.392022][ C2] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2366) 
[ 20.392026][ C2] ? rcu_do_batch (kernel/rcu/tree.c:2568) 
[ 20.392029][ C2] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2570) 
[ 20.392032][ C2] ? sched_balance_domains (kernel/sched/fair.c:12263) 
[ 20.392037][ C2] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) 
[ 20.392041][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 20.392044][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 20.392051][ C2] rcu_core (kernel/rcu/tree.c:2826) 
[ 20.392054][ C2] handle_softirqs (kernel/softirq.c:579) 
[ 20.392059][ C2] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 20.392061][ C2] irq_exit_rcu (kernel/softirq.c:698) 
[ 20.392064][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   20.392067][    C2]  </IRQ>
[   20.392068][    C2]  <TASK>
[ 20.392070][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 20.392072][ C2] RIP: 0010:stack_access_ok (arch/x86/kernel/unwind_orc.c:398) 
[ 20.392076][ C2] Code: c1 ea 03 80 3c 02 00 0f 85 f1 00 00 00 48 8b 73 28 48 89 da 48 89 ef e8 86 7b f5 ff 85 c0 74 15 31 c0 48 83 c4 08 5b 5d 41 5c <41> 5d 41 5e 41 5f e9 fd 3a 97 02 48 b8 00 00 00 00 00 fc ff df 48
All code
========
   0:	c1 ea 03             	shr    $0x3,%edx
   3:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   7:	0f 85 f1 00 00 00    	jne    0xfe
   d:	48 8b 73 28          	mov    0x28(%rbx),%rsi
  11:	48 89 da             	mov    %rbx,%rdx
  14:	48 89 ef             	mov    %rbp,%rdi
  17:	e8 86 7b f5 ff       	call   0xfffffffffff57ba2
  1c:	85 c0                	test   %eax,%eax
  1e:	74 15                	je     0x35
  20:	31 c0                	xor    %eax,%eax
  22:	48 83 c4 08          	add    $0x8,%rsp
  26:	5b                   	pop    %rbx
  27:	5d                   	pop    %rbp
  28:	41 5c                	pop    %r12
  2a:*	41 5d                	pop    %r13		<-- trapping instruction
  2c:	41 5e                	pop    %r14
  2e:	41 5f                	pop    %r15
  30:	e9 fd 3a 97 02       	jmp    0x2973b32
  35:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  3c:	fc ff df 
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	41 5d                	pop    %r13
   2:	41 5e                	pop    %r14
   4:	41 5f                	pop    %r15
   6:	e9 fd 3a 97 02       	jmp    0x2973b08
   b:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  12:	fc ff df 
  15:	48                   	rex.W
[   20.392079][    C2] RSP: 0018:ffffc90000ab7778 EFLAGS: 00000296
[   20.392084][    C2] RAX: 0000000000000001 RBX: 1ffff92000156efc RCX: ffffc90000ab8000
[   20.392086][    C2] RDX: ffffc90000ab7b01 RSI: 0000000000000001 RDI: ffffc90000ab7898
[   20.392087][    C2] RBP: 0000000000000001 R08: 0000000000000000 R09: ffffc90000ab78d9
[   20.392089][    C2] R10: ffffffff9da0c3f7 R11: ffffc90000ab78d8 R12: ffffc90000ab78f0
[   20.392091][    C2] R13: ffffc90000ab78a0 R14: ffffc90000ab78a8 R15: ffffc90000ab0000
[ 20.392094][ 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) 
[ 20.392101][ C2] unwind_next_frame (arch/x86/kernel/unwind_orc.c:403 arch/x86/kernel/unwind_orc.c:585) 
[ 20.392105][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 20.392109][ C2] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 20.392114][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 20.392117][ C2] ? kernel_text_address (kernel/extable.c:99) 
[ 20.392125][ C2] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 20.392129][ C2] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 20.392134][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 20.392138][ C2] stack_trace_save (kernel/stacktrace.c:123) 
[ 20.392142][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 20.392146][ C2] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 20.392149][ C2] ? stack_depot_save_flags (lib/stackdepot.c:552 lib/stackdepot.c:619) 
[ 20.392153][ C2] kasan_save_stack (mm/kasan/common.c:48) 
[ 20.392156][ C2] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 20.392160][ C2] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 20.392164][ 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) 
[ 20.392167][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 20.392170][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 20.392174][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 20.392178][ C2] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) 
[ 20.392181][ C2] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.392186][ C2] ? debug_object_active_state (lib/debugobjects.c:1056) 
[ 20.392194][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 20.392197][ 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) 
[ 20.392202][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 20.392205][ C2] ? trace_lock_release (./include/trace/events/lock.h:69 (discriminator 21)) 
[ 20.392211][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5879) 
[ 20.392214][ 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) 
[ 20.392216][ C2] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 20.392221][ C2] kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.392224][ C2] ? __pfx_free_object_rcu (mm/kmemleak.c:524) 
[ 20.392230][ 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) 
[ 20.392235][ C2] kmem_cache_free (./include/linux/kmemleak.h:49 mm/slub.c:2305 mm/slub.c:4642 mm/slub.c:4744) 
[ 20.392238][ C2] ? exit_mmap (mm/mmap.c:1311) 
[ 20.392244][ C2] exit_mmap (mm/mmap.c:1311) 
[ 20.392248][ C2] ? __pfx_exit_mmap (mm/mmap.c:1259) 
[ 20.392250][ C2] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:727 kernel/locking/mutex.c:746) 
[ 20.392254][ C2] ? lock_release (kernel/locking/lockdep.c:118 kernel/locking/lockdep.c:5879) 
[ 20.392257][ 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) 
[ 20.392265][ C2] mmput (kernel/fork.c:1447 kernel/fork.c:1382 kernel/fork.c:1402) 
[ 20.392271][ C2] exit_mm (kernel/exit.c:590) 
[ 20.392276][ C2] do_exit (kernel/exit.c:943) 
[ 20.392281][ C2] do_group_exit (kernel/exit.c:1083) 
[ 20.392284][ C2] __x64_sys_exit_group (kernel/exit.c:1111) 
[ 20.392288][ C2] x64_sys_call (arch/x86/entry/syscall_64.c:37) 
[ 20.392295][ C2] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.392299][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.392302][    C2] RIP: 0033:0x7ffa9255fabd
[ 20.392305][ C2] Code: Unable to access opcode bytes at 0x7ffa9255fa93.

Code starting with the faulting instruction
===========================================
[   20.392307][    C2] RSP: 002b:00007fff0f3d3fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   20.392310][    C2] RAX: ffffffffffffffda RBX: 00007ffa9263c9c0 RCX: 00007ffa9255fabd
[   20.392312][    C2] RDX: 00000000000000e7 RSI: ffffffffffffff80 RDI: 0000000000000000
[   20.392314][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000020
[   20.392316][    C2] R10: 00007fff0f3d3e90 R11: 0000000000000246 R12: 00007ffa9263c9c0


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