======================================
| [ 74.517131][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [   74.517320][    C2]
| [   74.517397][    C2]
| [   74.517397][    C2] stack backtrace:
[   74.517996][    C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   74.518334][    C2] Call Trace:
[   74.518558][    C2]  <IRQ>
[ 74.518638][ C2] dump_stack_lvl (lib/dump_stack.c:117) 
[ 74.518795][ C2] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 74.518984][ C2] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 74.519141][ C2] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 74.519330][ C2] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 74.519483][ C2] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 74.519634][ C2] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 74.519888][ C2] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 74.520042][ C2] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 74.520193][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 74.520348][ C2] ? save_trace (kernel/locking/lockdep.c:586) 
[ 74.520501][ C2] mark_lock (kernel/locking/lockdep.c:4678) 
[ 74.520710][ C2] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 74.520862][ C2] mark_usage (kernel/locking/lockdep.c:4567) 
[ 74.520977][ C2] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 74.521129][ C2] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 74.521388][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 74.521541][ C2] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 74.521693][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 74.521844][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 74.521998][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 74.522246][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 74.522395][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 74.522547][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 74.522704][ C2] _raw_write_lock (./include/linux/rwlock_api_smp.h:210 kernel/locking/spinlock.c:300) 
[ 74.522950][ C2] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 74.523101][ C2] addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 74.523251][ C2] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 74.523404][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 74.523653][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 74.523809][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 74.523960][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 74.524116][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 74.524363][ C2] call_timer_fn (kernel/time/timer.c:1793) 
[ 74.524515][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 74.524667][ C2] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 74.524819][ C2] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 74.524971][ C2] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 74.525184][ C2] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 74.525336][ C2] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 74.525489][ C2] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 74.525645][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 74.525897][ C2] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:115 ./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) 
[ 74.526049][ C2] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 74.526200][ C2] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 74.526352][ C2] ? timer_expire_remote (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2181) 
[ 74.526506][ C2] timer_expire_remote (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2181) 
[ 74.526659][ C2] tmigr_handle_remote_cpu (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:67 ./arch/x86/include/asm/irqflags.h:127 kernel/time/timer_migration.c:925) 
[ 74.526812][ C2] ? __pfx_tmigr_handle_remote_cpu (kernel/time/timer_migration.c:869) 
[ 74.527007][ C2] tmigr_handle_remote_up (kernel/time/timer_migration.c:1003) 
[ 74.527258][ C2] tmigr_handle_remote (kernel/time/timer_migration.c:488 kernel/time/timer_migration.c:1061) 
[ 74.527410][ C2] ? __pfx_tmigr_handle_remote (kernel/time/timer_migration.c:1026) 
[ 74.527567][ C2] __do_softirq (kernel/softirq.c:554) 
[ 74.527720][ C2] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 74.527834][ C2] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   74.528084][    C2]  </IRQ>
[   74.528163][    C2]  <TASK>
[ 74.528245][ C2] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 74.528436][ C2] RIP: 0010:lock_is_held_type (kernel/locking/lockdep.c:5830) 
[ 74.528595][ C2] Code: 94 c5 b8 ff ff ff ff 65 0f c1 05 a1 4b 28 54 83 f8 01 75 2d 9c 58 f6 c4 02 75 37 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 ed eb
All code
========
   0:	94                   	xchg   %eax,%esp
   1:	c5 b8 ff             	(bad)
   4:	ff                   	(bad)
   5:	ff                   	(bad)
   6:	ff 65 0f             	jmp    *0xf(%rbp)
   9:	c1 05 a1 4b 28 54 83 	roll   $0x83,0x54284ba1(%rip)        # 0x54284bb1
  10:	f8                   	clc
  11:	01 75 2d             	add    %esi,0x2d(%rbp)
  14:	9c                   	pushf
  15:	58                   	pop    %rax
  16:	f6 c4 02             	test   $0x2,%ah
  19:	75 37                	jne    0x52
  1b:	48 f7 04 24 00 02 00 	testq  $0x200,(%rsp)
  22:	00 
  23:	74 01                	je     0x26
  25:	fb                   	sti
  26:	48 83 c4 08          	add    $0x8,%rsp
  2a:*	44 89 e8             	mov    %r13d,%eax		<-- trapping instruction
  2d:	5b                   	pop    %rbx
  2e:	5d                   	pop    %rbp
  2f:	41 5c                	pop    %r12
  31:	41 5d                	pop    %r13
  33:	41 5e                	pop    %r14
  35:	41 5f                	pop    %r15
  37:	c3                   	ret
  38:	cc                   	int3
  39:	cc                   	int3
  3a:	cc                   	int3
  3b:	cc                   	int3
  3c:	45 31 ed             	xor    %r13d,%r13d
  3f:	eb                   	.byte 0xeb

Code starting with the faulting instruction
===========================================
   0:	44 89 e8             	mov    %r13d,%eax
   3:	5b                   	pop    %rbx
   4:	5d                   	pop    %rbp
   5:	41 5c                	pop    %r12
   7:	41 5d                	pop    %r13
   9:	41 5e                	pop    %r14
   b:	41 5f                	pop    %r15
   d:	c3                   	ret
   e:	cc                   	int3
   f:	cc                   	int3
  10:	cc                   	int3
  11:	cc                   	int3
  12:	45 31 ed             	xor    %r13d,%r13d
  15:	eb                   	.byte 0xeb
[   74.529236][    C2] RSP: 0018:ffffc9000196f548 EFLAGS: 00000286
[   74.529623][    C2] RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000001
[   74.529857][    C2] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffffacf76280
[   74.530084][    C2] RBP: ffffffffacf76280 R08: ffffffffa9cf9653 R09: fffffbfff5b2e482
[   74.530408][    C2] R10: ffffffffad972417 R11: ffff88803613de40 R12: ffff888013ffa300
[   74.530636][    C2] R13: 0000000000000000 R14: 00000000ffffffff R15: ffffffffabbeffc5
[ 74.530870][ C2] ? p9pdu_vreadf (./include/linux/slab.h:632 net/9p/protocol.c:313) 
[ 74.531121][ C2] ? fs_reclaim_acquire (mm/page_alloc.c:3715 mm/page_alloc.c:3706) 
[ 74.531277][ C2] ? p9pdu_vreadf (./include/linux/slab.h:632 net/9p/protocol.c:313) 
[ 74.531446][ C2] __might_resched (kernel/sched/core.c:10159) 
[ 74.531601][ C2] __kmalloc (./include/linux/kernel.h:73 ./include/linux/sched/mm.h:315 ./include/linux/sched/mm.h:310 mm/slub.c:3746 mm/slub.c:3827 mm/slub.c:3965 mm/slub.c:3979) 
[ 74.531718][ C2] p9pdu_vreadf (./include/linux/slab.h:632 net/9p/protocol.c:313) 
[ 74.531965][ C2] ? trace_9p_client_res (./include/trace/events/9p.h:146 (discriminator 52)) 
[ 74.532120][ C2] ? p9_client_rpc (net/9p/client.c:755) 
[ 74.532272][ C2] ? __pfx_p9pdu_vreadf (net/9p/protocol.c:260) 
[ 74.532428][ C2] ? __pfx_p9_client_rpc (net/9p/client.c:672) 
[ 74.532683][ C2] p9pdu_readf (net/9p/protocol.c:696) 
[ 74.532797][ C2] ? __pfx_p9pdu_readf (net/9p/protocol.c:696) 
[ 74.532949][ C2] ? __pfx_v9fs_fid_find (fs/9p/fid.c:114) 
[ 74.533102][ C2] ? __pfx_make_vfsgid (fs/mnt_idmapping.c:110) 
[ 74.533255][ C2] ? v9fs_fid_add (fs/9p/fid.c:41) 
[ 74.533504][ C2] p9_client_readlink (net/9p/client.c:2242) 
[ 74.533657][ C2] v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:822 fs/9p/vfs_inode_dotl.c:806) 
[ 74.533813][ C2] ? __pfx_v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:809) 
[ 74.534002][ C2] ? __lookup_slow (fs/namei.c:1692) 
[ 74.534250][ C2] pick_link (fs/namei.c:1808) 
[ 74.534366][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 74.534522][ C2] step_into (fs/namei.c:1874) 
[ 74.534637][ C2] ? __up_read (./arch/x86/include/asm/atomic64_64.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2749 ./include/linux/atomic/atomic-long.h:184 ./include/linux/atomic/atomic-instrumented.h:3317 kernel/locking/rwsem.c:1347) 
[ 74.534884][ C2] ? __pfx_step_into (fs/namei.c:1839) 
[ 74.535037][ C2] ? walk_component (fs/namei.c:2005) 
[ 74.535191][ C2] link_path_walk.part.0.constprop.0 (fs/namei.c:2331) 
[ 74.535384][ C2] ? __pfx_link_path_walk.part.0.constprop.0 (fs/namei.c:2249) 
[ 74.535668][ C2] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) 
[ 74.535821][ C2] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 74.535974][ C2] path_lookupat (fs/namei.c:2254 (discriminator 2) fs/namei.c:2484 (discriminator 2)) 
[ 74.536126][ C2] filename_lookup (fs/namei.c:2514) 
[ 74.536374][ C2] ? __pfx_filename_lookup (fs/namei.c:2508) 
[ 74.536530][ C2] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 74.536682][ C2] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 74.536838][ C2] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 74.536992][ C2] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 74.537240][ C2] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 74.537393][ C2] vfs_statx (fs/stat.c:244) 
[ 74.537510][ C2] ? __pfx_vfs_statx (fs/stat.c:234) 
[ 74.537663][ C2] ? getname_flags (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 fs/namei.c:190) 
[ 74.537914][ C2] vfs_fstatat (fs/stat.c:305) 
[ 74.538031][ C2] __do_sys_newfstatat (fs/stat.c:469) 
[ 74.538183][ C2] ? __pfx___do_sys_newfstatat (fs/stat.c:464) 
[ 74.538341][ C2] ? __x64_sys_openat (fs/open.c:1432) 
[ 74.538493][ C2] ? __pfx___x64_sys_openat (fs/open.c:1432) 
[ 74.538644][ C2] ? __pfx_do_faccessat (fs/open.c:465) 
[ 74.538798][ C2] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 74.538987][ C2] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 74.539140][ C2] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   74.539426][    C2] RIP: 0033:0x7f3b589b0eae
[ 74.539582][ C2] Code: 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 07 00 00 00 0f 1f 80 00 00 00 00 f3 0f 1e fa 41 89 ca b8 06 01 00 00 0f 05 <3d> 00 f0 ff ff 77 0b 31 c0 c3 0f 1f 84 00 00 00 00 00 f7 d8 89 05
All code
========
   0:	48 89 f2             	mov    %rsi,%rdx
   3:	b9 00 01 00 00       	mov    $0x100,%ecx
   8:	48 89 fe             	mov    %rdi,%rsi
   b:	bf 9c ff ff ff       	mov    $0xffffff9c,%edi
  10:	e9 07 00 00 00       	jmp    0x1c
  15:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1c:	f3 0f 1e fa          	endbr64
  20:	41 89 ca             	mov    %ecx,%r10d
  23:	b8 06 01 00 00       	mov    $0x106,%eax
  28:	0f 05                	syscall
  2a:*	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax		<-- trapping instruction
  2f:	77 0b                	ja     0x3c
  31:	31 c0                	xor    %eax,%eax
  33:	c3                   	ret
  34:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  3b:	00 
  3c:	f7 d8                	neg    %eax
  3e:	89                   	.byte 0x89
  3f:	05                   	.byte 0x5

Code starting with the faulting instruction
===========================================
   0:	3d 00 f0 ff ff       	cmp    $0xfffff000,%eax
   5:	77 0b                	ja     0x12
   7:	31 c0                	xor    %eax,%eax
   9:	c3                   	ret
   a:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  11:	00 
  12:	f7 d8                	neg    %eax
  14:	89                   	.byte 0x89
  15:	05                   	.byte 0x5
[   74.540220][    C2] RSP: 002b:00007ffd45e9a368 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
[   74.540450][    C2] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3b589b0eae
[   74.540773][    C2] RDX: 00007ffd45e9a430 RSI: 00007ffd45e9a370 RDI: 00000000ffffff9c
[   74.541002][    C2] RBP: 00007ffd45e9a4f0 R08: 00000000ffffffff R09: 00007ffd45e9a370
[   74.541227][    C2] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd45e9a377


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage