======================================
| [ 41.129716][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [   41.130007][    C0]
| [   41.130084][    C0]
| [   41.130084][    C0] stack backtrace:
[   41.130620][    C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   41.130973][    C0] Call Trace:
[   41.131094][    C0]  <IRQ>
[ 41.131173][ C0] dump_stack_lvl (lib/dump_stack.c:117) 
[ 41.131331][ C0] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 41.131526][ C0] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 41.131698][ C0] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 41.131893][ C0] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 41.132148][ C0] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 41.132302][ C0] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 41.132457][ C0] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 41.132613][ C0] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 41.132965][ C0] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 41.133122][ C0] ? save_trace (kernel/locking/lockdep.c:586) 
[ 41.133277][ C0] mark_lock (kernel/locking/lockdep.c:4678) 
[ 41.133396][ C0] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 41.133553][ C0] mark_usage (kernel/locking/lockdep.c:4567) 
[ 41.133772][ C0] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 41.133928][ C0] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 41.134084][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 41.134237][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 41.134391][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 41.134544][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 41.134698][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 41.134858][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 41.135113][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 41.135269][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 41.135424][ C0] _raw_write_lock (./include/linux/rwlock_api_smp.h:210 kernel/locking/spinlock.c:300) 
[ 41.135578][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 41.135733][ C0] addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 41.135988][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 41.136145][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 41.136302][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 41.136458][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 41.136722][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 41.136878][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 41.137032][ C0] call_timer_fn (kernel/time/timer.c:1793) 
[ 41.137185][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 41.137356][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 41.137511][ C0] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 41.137665][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 41.137790][ C0] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 41.137944][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 41.138201][ C0] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 41.138356][ C0] ? 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) 
[ 41.138510][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 41.138663][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 41.138915][ C0] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 41.139071][ C0] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 41.139229][ C0] __do_softirq (kernel/softirq.c:554) 
[ 41.139390][ C0] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 41.139607][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[   41.139762][    C0]  </IRQ>
[   41.139842][    C0]  <TASK>
[ 41.139920][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 41.140112][ C0] RIP: 0010:__asan_report_load8_noabort (mm/kasan/report_generic.c:381) 
[ 41.140312][ C0] Code: 7c e1 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 31 d2 <be> 08 00 00 00 e9 4c e1 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90
All code
========
   0:	7c e1                	jl     0xffffffffffffffe3
   2:	ff                   	(bad)
   3:	ff 66 66             	jmp    *0x66(%rsi)
   6:	2e 0f 1f 84 00 00 00 	cs nopl 0x0(%rax,%rax,1)
   d:	00 00 
   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:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	f3 0f 1e fa          	endbr64
  24:	48 8b 0c 24          	mov    (%rsp),%rcx
  28:	31 d2                	xor    %edx,%edx
  2a:*	be 08 00 00 00       	mov    $0x8,%esi		<-- trapping instruction
  2f:	e9 4c e1 ff ff       	jmp    0xffffffffffffe180
  34:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  3b:	00 00 00 00 
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	be 08 00 00 00       	mov    $0x8,%esi
   5:	e9 4c e1 ff ff       	jmp    0xffffffffffffe156
   a:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  11:	00 00 00 00 
  15:	90                   	nop
[   41.140862][    C0] RSP: 0018:ffffc900009af2a8 EFLAGS: 00000246
[   41.141161][    C0] RAX: ffff88800a4e1ff8 RBX: ffff88800a4e1118 RCX: ffffffffb7e3b764
[   41.141393][    C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88800a4e1118
[   41.141637][    C0] RBP: 0000000000000fef R08: ffff88800a4e1010 R09: 000000000000006b
[   41.141974][    C0] R10: 0000000000000008 R11: 0000000000001000 R12: 6b6b6b6b6b6b6b6b
[   41.142206][    C0] R13: 000000000000006b R14: dffffc0000000000 R15: 000000000000006b
[ 41.142439][ C0] ? memchr_inv (lib/string.c:856) 
[ 41.142699][ C0] memchr_inv (lib/string.c:856) 
[ 41.142818][ C0] check_bytes_and_report (mm/slub.c:1175) 
[ 41.142973][ C0] check_object (mm/slub.c:1337 (discriminator 1)) 
[ 41.143126][ C0] alloc_debug_processing (mm/slub.c:1544 mm/slub.c:1554) 
[ 41.143383][ C0] ___slab_alloc (mm/slub.c:2537 mm/slub.c:3536) 
[ 41.143537][ C0] ? fs_reclaim_acquire (mm/page_alloc.c:3715 mm/page_alloc.c:3706) 
[ 41.143693][ C0] ? p9_fcall_init (net/9p/client.c:232) 
[ 41.143850][ C0] ? p9_fcall_init (net/9p/client.c:232) 
[ 41.144101][ C0] ? __kmalloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3965 mm/slub.c:3979) 
[ 41.144255][ C0] __kmalloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3965 mm/slub.c:3979) 
[ 41.144372][ C0] p9_fcall_init (net/9p/client.c:232) 
[ 41.144525][ C0] p9_tag_alloc (net/9p/client.c:295) 
[ 41.144679][ C0] ? __pfx_p9_tag_alloc (net/9p/client.c:277) 
[ 41.145036][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 41.145152][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 41.145308][ C0] p9_client_prepare_req (net/9p/client.c:641) 
[ 41.145463][ C0] ? __pfx_p9_client_prepare_req (net/9p/client.c:625) 
[ 41.145755][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 41.145912][ C0] p9_client_rpc (net/9p/client.c:688 (discriminator 4)) 
[ 41.146065][ C0] ? 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) 
[ 41.146219][ C0] ? __pfx_p9_client_rpc (net/9p/client.c:672) 
[ 41.146376][ C0] ? v9fs_fid_find (fs/9p/fid.c:114) 
[ 41.146531][ 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) 
[ 41.146685][ C0] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 41.146839][ C0] ? __pfx_v9fs_fid_find (fs/9p/fid.c:114) 
[ 41.146995][ C0] ? __pfx_make_vfsgid (fs/mnt_idmapping.c:110) 
[ 41.147248][ C0] ? v9fs_fid_add (fs/9p/fid.c:41) 
[ 41.147404][ C0] p9_client_readlink (net/9p/client.c:2238) 
[ 41.147560][ C0] v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:822 fs/9p/vfs_inode_dotl.c:806) 
[ 41.147718][ C0] ? __pfx_v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:809) 
[ 41.148009][ C0] ? __lookup_slow (fs/namei.c:1692) 
[ 41.148164][ C0] pick_link (fs/namei.c:1808) 
[ 41.148279][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 41.148434][ C0] step_into (fs/namei.c:1874) 
[ 41.148650][ C0] ? __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) 
[ 41.148805][ C0] ? __pfx_step_into (fs/namei.c:1839) 
[ 41.148963][ C0] ? walk_component (fs/namei.c:2005) 
[ 41.149119][ C0] link_path_walk.part.0.constprop.0 (fs/namei.c:2331) 
[ 41.149316][ C0] ? __pfx_link_path_walk.part.0.constprop.0 (fs/namei.c:2249) 
[ 41.149509][ C0] path_openat (fs/namei.c:3795) 
[ 41.149664][ C0] ? __pfx_path_openat (fs/namei.c:3781) 
[ 41.149818][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 41.150072][ C0] do_filp_open (fs/namei.c:3826) 
[ 41.150227][ C0] ? __pfx_do_filp_open (fs/namei.c:3820) 
[ 41.150380][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 41.150538][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 41.150696][ C0] ? alloc_fd (fs/file.c:555 (discriminator 10)) 
[ 41.150912][ 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) 
[ 41.151065][ C0] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 41.151222][ C0] ? alloc_fd (fs/file.c:555 (discriminator 10)) 
[ 41.151339][ C0] do_sys_openat2 (fs/open.c:1406) 
[ 41.151603][ C0] ? __pfx_do_sys_openat2 (fs/open.c:1392) 
[ 41.151759][ C0] ? __pfx___debug_check_no_obj_freed (lib/debugobjects.c:960) 
[ 41.151951][ C0] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:896 ./include/linux/mmzone.h:2029 arch/x86/mm/physaddr.c:65) 
[ 41.152114][ C0] __x64_sys_openat (fs/open.c:1432) 
[ 41.152270][ C0] ? __pfx___x64_sys_openat (fs/open.c:1432) 
[ 41.152426][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 41.152581][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   41.152774][    C0] RIP: 0033:0x7fc5449ee0e8
[ 41.153037][ C0] Code: f9 41 89 f0 41 83 e2 40 75 30 89 f0 25 00 00 41 00 3d 00 00 41 00 74 22 44 89 c2 4c 89 ce bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 30 c3 0f 1f 80 00 00 00 00 48 8d 44 24 08 c7
All code
========
   0:	f9                   	stc
   1:	41 89 f0             	mov    %esi,%r8d
   4:	41 83 e2 40          	and    $0x40,%r10d
   8:	75 30                	jne    0x3a
   a:	89 f0                	mov    %esi,%eax
   c:	25 00 00 41 00       	and    $0x410000,%eax
  11:	3d 00 00 41 00       	cmp    $0x410000,%eax
  16:	74 22                	je     0x3a
  18:	44 89 c2             	mov    %r8d,%edx
  1b:	4c 89 ce             	mov    %r9,%rsi
  1e:	bf 9c ff ff ff       	mov    $0xffffff9c,%edi
  23:	b8 01 01 00 00       	mov    $0x101,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 30                	ja     0x62
  32:	c3                   	ret
  33:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  3a:	48 8d 44 24 08       	lea    0x8(%rsp),%rax
  3f:	c7                   	.byte 0xc7

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 30                	ja     0x38
   8:	c3                   	ret
   9:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  10:	48 8d 44 24 08       	lea    0x8(%rsp),%rax
  15:	c7                   	.byte 0xc7
[   41.153586][    C0] RSP: 002b:00007ffdbe00a9a8 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
[   41.153920][    C0] RAX: ffffffffffffffda RBX: 00007ffdbe00ac2f RCX: 00007fc5449ee0e8
[   41.154149][    C0] RDX: 0000000000080000 RSI: 00007ffdbe00aa20 RDI: 00000000ffffff9c
[   41.154377][    C0] RBP: 00007ffdbe00aa10 R08: 0000000000080000 R09: 00007ffdbe00aa20
[   41.154707][    C0] R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffdbe00aa27


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage