======================================
| [ 1427.837495][    C0] 1 lock held by fib_nexthops.sh/13858:
| [ 1427.837711][ C0] #0: ffffffffb178b540 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2570) 
| [ 1427.838099][    C0]
| [ 1427.838099][    C0] stack backtrace:
[ 1427.838366][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1427.838369][    C0] Call Trace:
[ 1427.838371][    C0]  <IRQ>
[ 1427.838373][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1427.838382][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4048) 
[ 1427.838387][ C0] mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4059 kernel/locking/lockdep.c:4270) 
[ 1427.838390][ C0] ? kmem_cache_free (./include/linux/kmemleak.h:49 mm/slub.c:2305 mm/slub.c:4642 mm/slub.c:4744) 
[ 1427.838394][ C0] ? __fuse_simple_request (fs/fuse/dev.c:681) 
[ 1427.838399][ C0] ? fuse_flush (fs/fuse/file.c:558) 
[ 1427.838404][ C0] ? ovl_flush (fs/overlayfs/file.c:650) 
[ 1427.838409][ C0] ? filp_flush (fs/open.c:1549) 
[ 1427.838415][ C0] ? __x64_sys_close (fs/open.c:1589 fs/open.c:1574 fs/open.c:1574) 
[ 1427.838419][ C0] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1427.838426][ C0] ? save_trace (kernel/locking/lockdep.c:595) 
[ 1427.838432][ C0] mark_lock (kernel/locking/lockdep.c:4756) 
[ 1427.838435][ C0] mark_usage (kernel/locking/lockdep.c:4645) 
[ 1427.838438][ C0] __lock_acquire (kernel/locking/lockdep.c:5194) 
[ 1427.838443][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:473 kernel/locking/lockdep.c:5873) 
[ 1427.838446][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 1427.838450][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1427.838453][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1427.838456][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 1427.838459][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) 
[ 1427.838463][ C0] ? simple_pin_fs (fs/libfs.c:1067) 
[ 1427.838466][ C0] simple_pin_fs (fs/libfs.c:1067) 
[ 1427.838469][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) 
[ 1427.838473][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 1427.838478][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 1427.838481][ 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:2376) 
[ 1427.838486][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 1427.838489][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 1427.838492][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 1427.838495][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1427.838499][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1427.838503][ C0] ? lock_acquire.part.0 (./include/linux/kasan.h:399 kernel/locking/lockdep.c:5845) 
[ 1427.838506][ C0] ? unwind_next_frame (./include/linux/rcupdate.h:842 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 1427.838510][ C0] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 1427.838515][ C0] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 1427.838521][ C0] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 1427.838528][ C0] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 1427.838531][ C0] ? __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:3092) 
[ 1427.838534][ C0] ? kmem_cache_free (./include/linux/kmemleak.h:49 mm/slub.c:2305 mm/slub.c:4642 mm/slub.c:4744) 
[ 1427.838539][ C0] __put_net (net/core/net_namespace.c:732) 
[ 1427.838545][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 1427.838549][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1427.838552][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 1427.838556][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 1427.838561][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1427.838565][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1427.838568][ C0] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 1427.838570][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 1427.838575][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 1427.838579][ C0] handle_softirqs (kernel/softirq.c:580) 
[ 1427.838584][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1427.838586][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 1427.838589][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1427.838592][    C0]  </IRQ>
[ 1427.838593][    C0]  <TASK>
[ 1427.838595][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1427.838597][ C0] RIP: 0010:lock_acquire.part.0 (./include/linux/kasan.h:399 kernel/locking/lockdep.c:5845) 
[ 1427.838601][ C0] Code: 90 90 90 90 90 90 90 90 90 41 57 49 89 ff 41 56 41 89 f6 41 55 41 89 d5 41 54 41 89 cc 55 44 89 c5 53 48 83 ec 38 4c 89 0c 24 <48> 8b 74 24 68 65 48 8b 05 5a ee c8 05 48 89 44 24 30 31 c0 e8 16
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	41 57                	push   %r15
   b:	49 89 ff             	mov    %rdi,%r15
   e:	41 56                	push   %r14
  10:	41 89 f6             	mov    %esi,%r14d
  13:	41 55                	push   %r13
  15:	41 89 d5             	mov    %edx,%r13d
  18:	41 54                	push   %r12
  1a:	41 89 cc             	mov    %ecx,%r12d
  1d:	55                   	push   %rbp
  1e:	44 89 c5             	mov    %r8d,%ebp
  21:	53                   	push   %rbx
  22:	48 83 ec 38          	sub    $0x38,%rsp
  26:	4c 89 0c 24          	mov    %r9,(%rsp)
  2a:*	48 8b 74 24 68       	mov    0x68(%rsp),%rsi		<-- trapping instruction
  2f:	65 48 8b 05 5a ee c8 	mov    %gs:0x5c8ee5a(%rip),%rax        # 0x5c8ee91
  36:	05 
  37:	48 89 44 24 30       	mov    %rax,0x30(%rsp)
  3c:	31 c0                	xor    %eax,%eax
  3e:	e8                   	.byte 0xe8
  3f:	16                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	48 8b 74 24 68       	mov    0x68(%rsp),%rsi
   5:	65 48 8b 05 5a ee c8 	mov    %gs:0x5c8ee5a(%rip),%rax        # 0x5c8ee67
   c:	05 
   d:	48 89 44 24 30       	mov    %rax,0x30(%rsp)
  12:	31 c0                	xor    %eax,%eax
  14:	e8                   	.byte 0xe8
  15:	16                   	(bad)
[ 1427.838604][    C0] RSP: 0018:ffffc90004c2f740 EFLAGS: 00000282
[ 1427.838608][    C0] RAX: 0000000000000001 RBX: 1ffff92000985f00 RCX: 0000000000000002
[ 1427.838610][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb178b660
[ 1427.838612][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 1427.838614][    C0] R10: ffffffffad41d687 R11: ffffc90004c2f8f8 R12: 0000000000000002
[ 1427.838616][    C0] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffffb178b660
[ 1427.838619][ C0] ? 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) 
[ 1427.838624][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1427.838627][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1427.838629][ C0] ? 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) 
[ 1427.838633][ C0] unwind_next_frame (./include/linux/rcupdate.h:842 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 1427.838635][ C0] ? 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) 
[ 1427.838638][ C0] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 1427.838640][ C0] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 1427.838644][ C0] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 1427.838648][ C0] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 1427.838651][ C0] ? kernel_text_address (kernel/extable.c:99) 
[ 1427.838656][ C0] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 1427.838660][ C0] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 1427.838665][ C0] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 1427.838670][ C0] stack_trace_save (kernel/stacktrace.c:123) 
[ 1427.838673][ C0] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 1427.838677][ C0] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 1427.838680][ C0] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 1427.838684][ C0] kasan_save_stack (mm/kasan/common.c:48) 
[ 1427.838687][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 1427.838692][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 1427.838697][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 1427.838701][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 1427.838705][ C0] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2126 arch/x86/mm/physaddr.c:65) 
[ 1427.838708][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 1427.838712][ C0] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2126 arch/x86/mm/physaddr.c:65) 
[ 1427.838715][ C0] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:104 ./include/linux/rcupdate.h:955 ./include/linux/mmzone.h:2126 arch/x86/mm/physaddr.c:65) 
[ 1427.838717][ C0] ? __delete_object (./arch/x86/include/asm/atomic.h:67 (discriminator 3) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 3) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 3) mm/kmemleak.c:550 (discriminator 3) mm/kmemleak.c:818 (discriminator 3)) 
[ 1427.838724][ C0] kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 1427.838726][ C0] ? __pfx_free_object_rcu (mm/kmemleak.c:524) 
[ 1427.838730][ C0] __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:3092) 
[ 1427.838734][ C0] kmem_cache_free (./include/linux/kmemleak.h:49 mm/slub.c:2305 mm/slub.c:4642 mm/slub.c:4744) 
[ 1427.838736][ C0] ? virtio_fs_send_req (fs/fuse/virtio_fs.c:1499) 
[ 1427.838740][ C0] ? __fuse_simple_request (fs/fuse/dev.c:681) 
[ 1427.838744][ C0] __fuse_simple_request (fs/fuse/dev.c:681) 
[ 1427.838748][ C0] fuse_flush (fs/fuse/file.c:558) 
[ 1427.838752][ C0] ? __pfx_fuse_flush (fs/fuse/file.c:517) 
[ 1427.838754][ C0] ? ovl_verify_lowerdata (fs/overlayfs/namei.c:1024) 
[ 1427.838759][ C0] ? __pfx_ovl_verify_lowerdata (fs/overlayfs/namei.c:1017) 
[ 1427.838766][ C0] ? ovl_real_file (fs/overlayfs/file.c:195) 
[ 1427.838769][ C0] ? __pfx_ovl_real_file (fs/overlayfs/file.c:175) 
[ 1427.838772][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 1427.838777][ C0] ? file_close_fd (fs/file.c:845) 
[ 1427.838783][ C0] ovl_flush (fs/overlayfs/file.c:650) 
[ 1427.838788][ C0] filp_flush (fs/open.c:1549) 
[ 1427.838791][ C0] __x64_sys_close (fs/open.c:1589 fs/open.c:1574 fs/open.c:1574) 
[ 1427.838795][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1427.838799][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1427.838802][    C0] RIP: 0033:0x7fefa0ad2227
[ 1427.838807][ C0] Code: ff e8 9d e3 01 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 e3 c9 f5 ff
All code
========
   0:	ff                   	ljmp   (bad)
   1:	e8 9d e3 01 00       	call   0x1e3a3
   6:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   d:	00 00 00 
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  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 41                	ja     0x73
  32:	c3                   	ret
  33:	48 83 ec 18          	sub    $0x18,%rsp
  37:	89 7c 24 0c          	mov    %edi,0xc(%rsp)
  3b:	e8 e3 c9 f5 ff       	call   0xfffffffffff5ca23

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 41                	ja     0x49
   8:	c3                   	ret
   9:	48 83 ec 18          	sub    $0x18,%rsp
   d:	89 7c 24 0c          	mov    %edi,0xc(%rsp)
  11:	e8 e3 c9 f5 ff       	call   0xfffffffffff5c9f9
[ 1427.838809][    C0] RSP: 002b:00007ffe546769e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[ 1427.838812][    C0] RAX: ffffffffffffffda RBX: 0000000000003622 RCX: 00007fefa0ad2227
[ 1427.838814][    C0] RDX: 00000000000000ff RSI: 0000560cc23c6010 RDI: 00000000000000ff
[ 1427.838816][    C0] RBP: 00007ffe54676b20 R08: 0000560cc23d8910 R09: 0000000000000000
[ 1427.838817][    C0] R10: 00007fefa0c11008 R11: 0000000000000246 R12: 0000000000000000
[ 1427.838819][    C0] R13: 00007ffe54676a20 R14: 0000560c89e0bf27 R15: 0000560cc37942c0
| [ 1427.868624][    C0] RCU nest depth: 1, expected: 0
| [ 1427.868821][    C0] INFO: lockdep is turned off.
| [ 1427.869017][    C0] Preemption disabled at:
| [ 1427.869019][ C0] handle_softirqs (kernel/softirq.c:553) 
[ 1427.869433][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1427.869435][    C0] Call Trace:
[ 1427.869437][    C0]  <IRQ>
[ 1427.869439][ C0] dump_stack_lvl (lib/dump_stack.c:123) 
[ 1427.869447][ C0] __might_resched (kernel/sched/core.c:8796) 
[ 1427.869455][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) 
[ 1427.869459][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) 
[ 1427.869462][ C0] ? simple_recursive_removal (fs/libfs.c:614) 
[ 1427.869467][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1427.869472][ 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) 
[ 1427.869478][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:617) 
[ 1427.869481][ 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) 
[ 1427.869485][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) 
[ 1427.869492][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) 
[ 1427.869495][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:411 lib/ref_tracker.c:195) 
[ 1427.869501][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) 
[ 1427.869504][ 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:2376) 
[ 1427.869508][ C0] ? rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 1427.869514][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) 
[ 1427.869517][ C0] ? irq_exit_rcu (kernel/softirq.c:698) 
[ 1427.869520][ C0] ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1427.869525][ C0] ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1427.869529][ C0] ? lock_acquire.part.0 (./include/linux/kasan.h:399 kernel/locking/lockdep.c:5845) 
[ 1427.869532][ C0] ? unwind_next_frame (./include/linux/rcupdate.h:842 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 1427.869536][ C0] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 1427.869541][ C0] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 1427.869547][ C0] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 1427.869554][ C0] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 1427.869558][ C0] ? __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:3092) 
[ 1427.869562][ C0] ? kmem_cache_free (./include/linux/kmemleak.h:49 mm/slub.c:2305 mm/slub.c:4642 mm/slub.c:4744) 
[ 1427.869567][ C0] __put_net (net/core/net_namespace.c:732) 
[ 1427.869573][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2376) 
[ 1427.869577][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2576) 
[ 1427.869580][ C0] rcu_do_batch (./include/linux/rcupdate.h:341 kernel/rcu/tree.c:2578) 
[ 1427.869584][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 1427.869590][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2500) 
[ 1427.869595][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1427.869597][ C0] ? note_gp_changes (kernel/rcu/tree.c:1326 (discriminator 1)) 
[ 1427.869600][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 1427.869605][ C0] rcu_core (kernel/rcu/tree.c:2834) 
[ 1427.869608][ C0] handle_softirqs (kernel/softirq.c:580) 
[ 1427.869613][ C0] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1427.869616][ C0] irq_exit_rcu (kernel/softirq.c:698) 
[ 1427.869619][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1427.869622][    C0]  </IRQ>
[ 1427.869623][    C0]  <TASK>
[ 1427.869625][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1427.869628][ C0] RIP: 0010:lock_acquire.part.0 (./include/linux/kasan.h:399 kernel/locking/lockdep.c:5845) 
[ 1427.869631][ C0] Code: 90 90 90 90 90 90 90 90 90 41 57 49 89 ff 41 56 41 89 f6 41 55 41 89 d5 41 54 41 89 cc 55 44 89 c5 53 48 83 ec 38 4c 89 0c 24 <48> 8b 74 24 68 65 48 8b 05 5a ee c8 05 48 89 44 24 30 31 c0 e8 16
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	41 57                	push   %r15
   b:	49 89 ff             	mov    %rdi,%r15
   e:	41 56                	push   %r14
  10:	41 89 f6             	mov    %esi,%r14d
  13:	41 55                	push   %r13
  15:	41 89 d5             	mov    %edx,%r13d
  18:	41 54                	push   %r12
  1a:	41 89 cc             	mov    %ecx,%r12d
  1d:	55                   	push   %rbp
  1e:	44 89 c5             	mov    %r8d,%ebp
  21:	53                   	push   %rbx
  22:	48 83 ec 38          	sub    $0x38,%rsp
  26:	4c 89 0c 24          	mov    %r9,(%rsp)
  2a:*	48 8b 74 24 68       	mov    0x68(%rsp),%rsi		<-- trapping instruction
  2f:	65 48 8b 05 5a ee c8 	mov    %gs:0x5c8ee5a(%rip),%rax        # 0x5c8ee91
  36:	05 
  37:	48 89 44 24 30       	mov    %rax,0x30(%rsp)
  3c:	31 c0                	xor    %eax,%eax
  3e:	e8                   	.byte 0xe8
  3f:	16                   	(bad)

Code starting with the faulting instruction
===========================================
   0:	48 8b 74 24 68       	mov    0x68(%rsp),%rsi
   5:	65 48 8b 05 5a ee c8 	mov    %gs:0x5c8ee5a(%rip),%rax        # 0x5c8ee67
   c:	05 
   d:	48 89 44 24 30       	mov    %rax,0x30(%rsp)
  12:	31 c0                	xor    %eax,%eax
  14:	e8                   	.byte 0xe8
  15:	16                   	(bad)
[ 1427.869634][    C0] RSP: 0018:ffffc90004c2f740 EFLAGS: 00000282
[ 1427.869637][    C0] RAX: 0000000000000001 RBX: 1ffff92000985f00 RCX: 0000000000000002
[ 1427.869638][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb178b660
[ 1427.869640][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 1427.869641][    C0] R10: ffffffffad41d687 R11: ffffc90004c2f8f8 R12: 0000000000000002
[ 1427.869643][    C0] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffffb178b660
[ 1427.869646][ C0] ? 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) 
[ 1427.869651][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1427.869654][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1427.869656][ C0] ? 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) 
[ 1427.869659][ C0] unwind_next_frame (./include/linux/rcupdate.h:842 ./include/linux/rcupdate.h:1155 arch/x86/kernel/unwind_orc.c:479) 
[ 1427.869662][ C0] ? 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) 
[ 1427.869664][ C0] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 1427.869666][ C0] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 1427.869671][ C0] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 1427.869675][ C0] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 1427.869678][ C0] ? kernel_text_address (kernel/extable.c:99) 
[ 1427.869683][ C0] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 1427.869688][ C0] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 1427.869693][ C0] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 1427.869697][ C0] stack_trace_save (kernel/stacktrace.c:123) 
[ 1427.869701][ C0] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 1427.869705][ C0] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 1427.869709][ C0] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 1427.869713][ C0] kasan_save_stack (mm/kasan/common.c:48) 
[ 1427.869716][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 1427.869721][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 1427.869726][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 1427.869731][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 1427.869734][ C0] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2126 arch/x86/mm/physaddr.c:65) 
[ 1427.869738][ C0] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 1427.869741][ C0] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2126 arch/x86/mm/physaddr.c:65) 
[ 1427.869744][ C0] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:104 ./include/linux/rcupdate.h:955 ./include/linux/mmzone.h:2126 arch/x86/mm/physaddr.c:65) 
[ 1427.869747][ C0] ? __delete_object (./arch/x86/include/asm/atomic.h:67 (discriminator 3) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 3) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 3) mm/kmemleak.c:550 (discriminator 3) mm/kmemleak.c:818 (discriminator 3)) 
[ 1427.869753][ C0] kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 1427.869756][ C0] ? __pfx_free_object_rcu (mm/kmemleak.c:524) 
[ 1427.869760][ C0] __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:3092) 
[ 1427.869764][ C0] kmem_cache_free (./include/linux/kmemleak.h:49 mm/slub.c:2305 mm/slub.c:4642 mm/slub.c:4744) 
[ 1427.869766][ C0] ? virtio_fs_send_req (fs/fuse/virtio_fs.c:1499) 
[ 1427.869770][ C0] ? __fuse_simple_request (fs/fuse/dev.c:681) 
[ 1427.869776][ C0] __fuse_simple_request (fs/fuse/dev.c:681) 
[ 1427.869780][ C0] fuse_flush (fs/fuse/file.c:558) 
[ 1427.869785][ C0] ? __pfx_fuse_flush (fs/fuse/file.c:517) 
[ 1427.869788][ C0] ? ovl_verify_lowerdata (fs/overlayfs/namei.c:1024) 
[ 1427.869793][ C0] ? __pfx_ovl_verify_lowerdata (fs/overlayfs/namei.c:1017) 
[ 1427.869799][ C0] ? ovl_real_file (fs/overlayfs/file.c:195) 
[ 1427.869804][ C0] ? __pfx_ovl_real_file (fs/overlayfs/file.c:175) 
[ 1427.869806][ C0] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 1427.869810][ C0] ? file_close_fd (fs/file.c:845) 
[ 1427.869815][ C0] ovl_flush (fs/overlayfs/file.c:650) 
[ 1427.869819][ C0] filp_flush (fs/open.c:1549) 
[ 1427.869823][ C0] __x64_sys_close (fs/open.c:1589 fs/open.c:1574 fs/open.c:1574) 
[ 1427.869827][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 1427.869833][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1427.869835][    C0] RIP: 0033:0x7fefa0ad2227
[ 1427.869839][ C0] Code: ff e8 9d e3 01 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 e3 c9 f5 ff
All code
========
   0:	ff                   	ljmp   (bad)
   1:	e8 9d e3 01 00       	call   0x1e3a3
   6:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   d:	00 00 00 
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  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 41                	ja     0x73
  32:	c3                   	ret
  33:	48 83 ec 18          	sub    $0x18,%rsp
  37:	89 7c 24 0c          	mov    %edi,0xc(%rsp)
  3b:	e8 e3 c9 f5 ff       	call   0xfffffffffff5ca23

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 41                	ja     0x49
   8:	c3                   	ret
   9:	48 83 ec 18          	sub    $0x18,%rsp
   d:	89 7c 24 0c          	mov    %edi,0xc(%rsp)
  11:	e8 e3 c9 f5 ff       	call   0xfffffffffff5c9f9
[ 1427.869841][    C0] RSP: 002b:00007ffe546769e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[ 1427.869844][    C0] RAX: ffffffffffffffda RBX: 0000000000003622 RCX: 00007fefa0ad2227
[ 1427.869845][    C0] RDX: 00000000000000ff RSI: 0000560cc23c6010 RDI: 00000000000000ff
[ 1427.869848][    C0] RBP: 00007ffe54676b20 R08: 0000560cc23d8910 R09: 0000000000000000
[ 1427.869849][    C0] R10: 00007fefa0c11008 R11: 0000000000000246 R12: 0000000000000000


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