======================================
| [ 294.764972][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [  294.765173][    C0]
| [  294.765256][    C0]
| [  294.765256][    C0] stack backtrace:
[  294.765678][    C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  294.766026][    C0] Call Trace:
[  294.766154][    C0]  <IRQ>
[ 294.766235][ C0] dump_stack_lvl (lib/dump_stack.c:117) 
[ 294.766397][ C0] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 294.766593][ C0] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 294.766852][ C0] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 294.767045][ C0] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 294.767202][ C0] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 294.767356][ C0] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 294.767614][ C0] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 294.767770][ C0] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 294.767924][ C0] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 294.768091][ C0] ? save_trace (kernel/locking/lockdep.c:586) 
[ 294.768349][ C0] mark_lock (kernel/locking/lockdep.c:4678) 
[ 294.768466][ C0] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 294.768621][ C0] mark_usage (kernel/locking/lockdep.c:4567) 
[ 294.768738][ C0] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 294.768894][ C0] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 294.769151][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 294.769305][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 294.769464][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 294.769618][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 294.769873][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 294.770029][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 294.770182][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 294.770336][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 294.770593][ C0] _raw_write_lock (./include/linux/rwlock_api_smp.h:210 kernel/locking/spinlock.c:300) 
[ 294.770748][ C0] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 294.770905][ C0] addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 294.771059][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 294.771216][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 294.771370][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 294.771526][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 294.771690][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 294.771855][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 294.772108][ C0] call_timer_fn (kernel/time/timer.c:1793) 
[ 294.772265][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 294.772423][ C0] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 294.772580][ C0] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 294.772839][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 294.772959][ C0] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 294.773113][ C0] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 294.773269][ C0] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 294.773426][ 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) 
[ 294.773783][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 294.773943][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 294.774104][ C0] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 294.774261][ C0] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 294.774415][ C0] __do_softirq (kernel/softirq.c:554) 
[ 294.774572][ C0] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 294.774689][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[  294.774844][    C0]  </IRQ>
[  294.774934][    C0]  <TASK>
[ 294.775112][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 294.775308][ C0] RIP: 0010:stack_depot_save_flags (lib/stackdepot.c:553 lib/stackdepot.c:618) 
[ 294.775509][ C0] Code: 4a 5f 1e 60 49 8b 09 45 89 f8 41 83 e0 02 49 39 c9 75 11 e9 16 02 00 00 48 8b 09 49 39 c9 0f 84 0a 02 00 00 44 39 61 10 75 ee <44> 3b 71 14 75 e8 31 c0 48 8b 74 c1 20 48 39 74 c5 00 75 da 48 83
All code
========
   0:	4a 5f                	rex.WX pop %rdi
   2:	1e                   	(bad)
   3:	60                   	(bad)
   4:	49 8b 09             	mov    (%r9),%rcx
   7:	45 89 f8             	mov    %r15d,%r8d
   a:	41 83 e0 02          	and    $0x2,%r8d
   e:	49 39 c9             	cmp    %rcx,%r9
  11:	75 11                	jne    0x24
  13:	e9 16 02 00 00       	jmp    0x22e
  18:	48 8b 09             	mov    (%rcx),%rcx
  1b:	49 39 c9             	cmp    %rcx,%r9
  1e:	0f 84 0a 02 00 00    	je     0x22e
  24:	44 39 61 10          	cmp    %r12d,0x10(%rcx)
  28:	75 ee                	jne    0x18
  2a:*	44 3b 71 14          	cmp    0x14(%rcx),%r14d		<-- trapping instruction
  2e:	75 e8                	jne    0x18
  30:	31 c0                	xor    %eax,%eax
  32:	48 8b 74 c1 20       	mov    0x20(%rcx,%rax,8),%rsi
  37:	48 39 74 c5 00       	cmp    %rsi,0x0(%rbp,%rax,8)
  3c:	75 da                	jne    0x18
  3e:	48                   	rex.W
  3f:	83                   	.byte 0x83

Code starting with the faulting instruction
===========================================
   0:	44 3b 71 14          	cmp    0x14(%rcx),%r14d
   4:	75 e8                	jne    0xffffffffffffffee
   6:	31 c0                	xor    %eax,%eax
   8:	48 8b 74 c1 20       	mov    0x20(%rcx,%rax,8),%rsi
   d:	48 39 74 c5 00       	cmp    %rsi,0x0(%rbp,%rax,8)
  12:	75 da                	jne    0xffffffffffffffee
  14:	48                   	rex.W
  15:	83                   	.byte 0x83
[  294.776171][    C0] RSP: 0018:ffffc900008ef170 EFLAGS: 00000246
[  294.776372][    C0] RAX: 0000000038fb0dc4 RBX: 0000000000092c40 RCX: ffff888004818ff0
[  294.776720][    C0] RDX: 0000000000000017 RSI: 0000000000000001 RDI: 000000009122206f
[  294.776954][    C0] RBP: ffffc900008ef1d0 R08: 0000000000000000 R09: ffff88802e4a56e0
[  294.777185][    C0] R10: ffffffffa3595ad7 R11: ffffc900008ef0d9 R12: 0000000039a0a56e
[  294.777420][    C0] R13: 0000000000000000 R14: 0000000000000017 R15: 0000000000000001
[ 294.777661][ C0] kasan_save_stack (mm/kasan/common.c:49) 
[ 294.777817][ C0] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 294.777976][ C0] ? kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 294.778131][ C0] ? __kasan_slab_alloc (mm/kasan/common.c:341) 
[ 294.778289][ C0] ? kmem_cache_alloc (./include/linux/kasan.h:201 mm/slub.c:3798 mm/slub.c:3845 mm/slub.c:3852) 
[ 294.778444][ C0] ? __alloc_object (mm/kmemleak.c:466 mm/kmemleak.c:645) 
[ 294.778600][ C0] ? __create_object (mm/kmemleak.c:750) 
[ 294.778855][ C0] ? __kmalloc (./include/linux/kmemleak.h:42 mm/slub.c:3802 mm/slub.c:3845 mm/slub.c:3965 mm/slub.c:3979) 
[ 294.779009][ C0] ? p9_fcall_init (net/9p/client.c:232) 
[ 294.779164][ C0] ? p9_tag_alloc (net/9p/client.c:297) 
[ 294.779326][ C0] ? p9_client_prepare_req (net/9p/client.c:641) 
[ 294.779584][ C0] ? p9_client_rpc (net/9p/client.c:688 (discriminator 4)) 
[ 294.779738][ C0] ? p9_client_readlink (net/9p/client.c:2238) 
[ 294.779893][ C0] ? v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:822 fs/9p/vfs_inode_dotl.c:806) 
[ 294.780049][ C0] ? ovl_get_link (fs/overlayfs/inode.c:338 fs/overlayfs/inode.c:326) 
[ 294.780306][ C0] ? pick_link (fs/namei.c:1808) 
[ 294.780465][ C0] ? step_into (fs/namei.c:1874) 
[ 294.780620][ C0] ? open_last_lookups (fs/namei.c:3589) 
[ 294.780773][ C0] ? path_openat (fs/namei.c:3796 (discriminator 1)) 
[ 294.780931][ C0] ? do_filp_open (fs/namei.c:3826) 
[ 294.781189][ C0] ? do_sys_openat2 (fs/open.c:1406) 
[ 294.781343][ C0] ? __x64_sys_openat (fs/open.c:1432) 
[ 294.781496][ C0] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 294.781652][ C0] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[ 294.781967][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 294.782162][ C0] ? get_partial_node.part.0 (mm/slub.c:2623) 
[ 294.782318][ C0] ? ___slab_alloc (mm/slub.c:2583 mm/slub.c:2701 mm/slub.c:3505) 
[ 294.782478][ C0] ? fs_reclaim_acquire (mm/page_alloc.c:3715 mm/page_alloc.c:3706) 
[ 294.782737][ C0] ? __alloc_object (mm/kmemleak.c:466 mm/kmemleak.c:645) 
[ 294.782892][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 294.783050][ C0] kasan_save_track (./arch/x86/include/asm/current.h:49 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 294.783211][ C0] __kasan_slab_alloc (mm/kasan/common.c:341) 
[ 294.783367][ C0] kmem_cache_alloc (./include/linux/kasan.h:201 mm/slub.c:3798 mm/slub.c:3845 mm/slub.c:3852) 
[ 294.783523][ C0] ? p9_fcall_init (net/9p/client.c:232) 
[ 294.783677][ C0] __alloc_object (mm/kmemleak.c:466 mm/kmemleak.c:645) 
[ 294.783837][ C0] ? p9_fcall_init (net/9p/client.c:232) 
[ 294.784100][ C0] __create_object (mm/kmemleak.c:750) 
[ 294.784255][ C0] ? p9_fcall_init (net/9p/client.c:232) 
[ 294.784410][ C0] __kmalloc (./include/linux/kmemleak.h:42 mm/slub.c:3802 mm/slub.c:3845 mm/slub.c:3965 mm/slub.c:3979) 
[ 294.784528][ C0] p9_fcall_init (net/9p/client.c:232) 
[ 294.784683][ C0] p9_tag_alloc (net/9p/client.c:297) 
[ 294.784942][ C0] ? __pfx_p9_tag_alloc (net/9p/client.c:277) 
[ 294.785101][ C0] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 294.785220][ C0] p9_client_prepare_req (net/9p/client.c:641) 
[ 294.785375][ C0] ? __pfx_p9_client_prepare_req (net/9p/client.c:625) 
[ 294.785773][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 294.785929][ C0] p9_client_rpc (net/9p/client.c:688 (discriminator 4)) 
[ 294.786086][ 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) 
[ 294.786240][ C0] ? __pfx_p9_client_rpc (net/9p/client.c:672) 
[ 294.786395][ C0] ? v9fs_fid_find (fs/9p/fid.c:114) 
[ 294.786550][ 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) 
[ 294.786706][ C0] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 294.786861][ C0] ? __pfx_v9fs_fid_find (fs/9p/fid.c:114) 
[ 294.787119][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 294.787278][ C0] p9_client_readlink (net/9p/client.c:2238) 
[ 294.787433][ C0] v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:822 fs/9p/vfs_inode_dotl.c:806) 
[ 294.787589][ C0] ? __pfx_v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:809) 
[ 294.787882][ C0] ovl_get_link (fs/overlayfs/inode.c:338 fs/overlayfs/inode.c:326) 
[ 294.787999][ C0] pick_link (fs/namei.c:1808) 
[ 294.788117][ C0] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 294.788279][ C0] ? __d_lookup (./include/linux/rcupdate.h:339 ./include/linux/rcupdate.h:814 fs/dcache.c:2328) 
[ 294.788441][ C0] step_into (fs/namei.c:1874) 
[ 294.788666][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 294.788822][ C0] ? __pfx_step_into (fs/namei.c:1839) 
[ 294.788977][ C0] ? __d_lookup (fs/dcache.c:2331) 
[ 294.789133][ C0] open_last_lookups (fs/namei.c:3589) 
[ 294.789290][ C0] path_openat (fs/namei.c:3796 (discriminator 1)) 
[ 294.789448][ C0] ? __pfx_path_openat (fs/namei.c:3781) 
[ 294.789603][ C0] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 294.789759][ C0] do_filp_open (fs/namei.c:3826) 
[ 294.789916][ C0] ? __pfx_do_filp_open (fs/namei.c:3820) 
[ 294.790073][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 294.790230][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 294.790386][ C0] ? alloc_fd (fs/file.c:555 (discriminator 10)) 
[ 294.790505][ C0] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 294.790760][ C0] ? alloc_fd (fs/file.c:555 (discriminator 10)) 
[ 294.790879][ C0] do_sys_openat2 (fs/open.c:1406) 
[ 294.791034][ C0] ? __pfx_do_sys_openat2 (fs/open.c:1392) 
[ 294.791189][ C0] ? __pfx___debug_check_no_obj_freed (lib/debugobjects.c:960) 
[ 294.791387][ 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) 
[ 294.791646][ C0] __x64_sys_openat (fs/open.c:1432) 
[ 294.791818][ C0] ? __pfx___x64_sys_openat (fs/open.c:1432) 
[ 294.791980][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 294.792135][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[  294.792427][    C0] RIP: 0033:0x7feb787530e8
[ 294.792591][ 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
[  294.793255][    C0] RSP: 002b:00007ffd7e27abd8 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
[  294.793492][    C0] RAX: ffffffffffffffda RBX: 00007ffd7e27ae5f RCX: 00007feb787530e8
[  294.793726][    C0] RDX: 0000000000080000 RSI: 00007ffd7e27ac50 RDI: 00000000ffffff9c
[  294.794059][    C0] RBP: 00007ffd7e27ac40 R08: 0000000000080000 R09: 00007ffd7e27ac50
[  294.794292][    C0] R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffd7e27ac57


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage