======================================
| [ 101.203788][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
| [  101.203979][    C3]
| [  101.204055][    C3]
| [  101.204055][    C3] stack backtrace:
[  101.204475][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  101.204820][    C3] Call Trace:
[  101.204943][    C3]  <IRQ>
[ 101.205024][ C3] dump_stack_lvl (lib/dump_stack.c:117) 
[ 101.205198][ C3] print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 101.205387][ C3] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 101.205544][ C3] ? __pfx_print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4024) 
[ 101.205735][ C3] ? __pfx_usage_skip (kernel/locking/lockdep.c:2264) 
[ 101.205889][ C3] ? __pfx_usage_match (kernel/locking/lockdep.c:2256) 
[ 101.206041][ C3] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 101.206202][ C3] mark_lock_irq (kernel/locking/lockdep.c:4244) 
[ 101.206357][ C3] ? __pfx_mark_lock_irq (kernel/locking/lockdep.c:4207) 
[ 101.206514][ C3] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 101.206668][ C3] ? save_trace (kernel/locking/lockdep.c:586) 
[ 101.206823][ C3] mark_lock (kernel/locking/lockdep.c:4678) 
[ 101.206938][ C3] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 101.207094][ C3] mark_usage (kernel/locking/lockdep.c:4567) 
[ 101.207210][ C3] __lock_acquire (kernel/locking/lockdep.c:5091) 
[ 101.207365][ C3] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 101.207523][ C3] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 101.207674][ C3] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 101.207827][ C3] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 101.207979][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 101.208134][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 101.208286][ C3] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 101.208448][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 101.208600][ C3] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 101.208756][ C3] _raw_write_lock (./include/linux/rwlock_api_smp.h:210 kernel/locking/spinlock.c:300) 
[ 101.208911][ C3] ? addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 101.209064][ C3] addrconf_rs_timer (net/ipv6/addrconf.c:4023) 
[ 101.209215][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 101.209376][ C3] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 101.209527][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 101.209680][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 101.209832][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 101.209988][ C3] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 101.210139][ C3] call_timer_fn (kernel/time/timer.c:1793) 
[ 101.210292][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 101.210444][ C3] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1783) 
[ 101.210597][ C3] ? __pfx_call_timer_fn (kernel/time/timer.c:1770) 
[ 101.210749][ C3] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 101.210867][ C3] __run_timers (kernel/time/timer.c:1845 kernel/time/timer.c:2418) 
[ 101.211022][ C3] ? __pfx_addrconf_rs_timer (net/ipv6/addrconf.c:4016) 
[ 101.211183][ C3] ? __pfx___run_timers (kernel/time/timer.c:2389) 
[ 101.211347][ C3] ? 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) 
[ 101.211502][ C3] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 101.211656][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 101.211808][ C3] ? run_timer_softirq (kernel/time/timer.c:2429 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 101.211961][ C3] run_timer_softirq (kernel/time/timer.c:2430 kernel/time/timer.c:2422 kernel/time/timer.c:2438 kernel/time/timer.c:2448) 
[ 101.212113][ C3] __do_softirq (kernel/softirq.c:554) 
[ 101.212268][ C3] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 101.212384][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[  101.212542][    C3]  </IRQ>
[  101.212621][    C3]  <TASK>
[ 101.212698][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 101.212888][ C3] RIP: 0010:unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 101.213050][ C3] Code: 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 48 ba 00 00 00 00 00 fc ff df 41 57 41 56 41 55 49 89 fd 41 54 55 53 48 81 ec c8 00 00 00 <48> c7 44 24 48 b3 8a b5 41 4c 8d 4c 24 48 48 c7 44 24 50 a8 85 00
All code
========
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	f3 0f 1e fa          	endbr64
   7:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   c:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  13:	fc ff df 
  16:	41 57                	push   %r15
  18:	41 56                	push   %r14
  1a:	41 55                	push   %r13
  1c:	49 89 fd             	mov    %rdi,%r13
  1f:	41 54                	push   %r12
  21:	55                   	push   %rbp
  22:	53                   	push   %rbx
  23:	48 81 ec c8 00 00 00 	sub    $0xc8,%rsp
  2a:*	48 c7 44 24 48 b3 8a 	movq   $0x41b58ab3,0x48(%rsp)		<-- trapping instruction
  31:	b5 41 
  33:	4c 8d 4c 24 48       	lea    0x48(%rsp),%r9
  38:	48                   	rex.W
  39:	c7                   	.byte 0xc7
  3a:	44 24 50             	rex.R and $0x50,%al
  3d:	a8 85                	test   $0x85,%al
	...

Code starting with the faulting instruction
===========================================
   0:	48 c7 44 24 48 b3 8a 	movq   $0x41b58ab3,0x48(%rsp)
   7:	b5 41 
   9:	4c 8d 4c 24 48       	lea    0x48(%rsp),%r9
   e:	48                   	rex.W
   f:	c7                   	.byte 0xc7
  10:	44 24 50             	rex.R and $0x50,%al
  13:	a8 85                	test   $0x85,%al
	...
[  101.213590][    C3] RSP: 0018:ffffc9000082f218 EFLAGS: 00000296
[  101.213791][    C3] RAX: 0000000000000001 RBX: ffffffffb7bc9f90 RCX: ffffc90000830001
[  101.214018][    C3] RDX: dffffc0000000000 RSI: ffffffffb8215efe RDI: ffffc9000082f318
[  101.214247][    C3] RBP: ffffc9000082f3b0 R08: ffffc9000082f358 R09: fffff52000105e4c
[  101.214473][    C3] R10: ffffc9000082f318 R11: ffffc9000082f359 R12: ffffc9000082f3e0
[  101.214699][    C3] R13: ffffc9000082f318 R14: ffff888005c145c0 R15: ffff888004c2d5b0
[ 101.214932][ C3] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 101.215124][ C3] ? step_into (fs/namei.c:1874) 
[ 101.215291][ C3] ? unwind_next_frame (arch/x86/kernel/unwind_orc.c:406 arch/x86/kernel/unwind_orc.c:648) 
[ 101.215444][ C3] ? pick_link (fs/namei.c:1808) 
[ 101.215601][ C3] ? 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) 
[ 101.215754][ C3] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) 
[ 101.215908][ C3] ? step_into (fs/namei.c:1874) 
[ 101.216064][ C3] ? kernel_text_address (kernel/extable.c:99) 
[ 101.216218][ C3] ? step_into (fs/namei.c:1874) 
[ 101.216369][ C3] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 101.216559][ C3] arch_stack_walk (arch/x86/kernel/stacktrace.c:24) 
[ 101.216715][ C3] ? step_into (fs/namei.c:1874) 
[ 101.216867][ C3] stack_trace_save (kernel/stacktrace.c:123) 
[ 101.217018][ C3] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 101.217170][ C3] set_track_prepare (mm/slub.c:886) 
[ 101.217322][ C3] ? p9pdu_vreadf (./include/linux/slab.h:632 net/9p/protocol.c:313) 
[ 101.217488][ C3] ? p9pdu_readf (net/9p/protocol.c:696) 
[ 101.217640][ C3] ? p9_client_readlink (net/9p/client.c:2242) 
[ 101.217792][ C3] ? v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:822 fs/9p/vfs_inode_dotl.c:806) 
[ 101.217945][ C3] ? pick_link (fs/namei.c:1808) 
[ 101.218096][ C3] ? step_into (fs/namei.c:1874) 
[ 101.218251][ C3] ___slab_alloc (mm/slub.c:917 mm/slub.c:3515) 
[ 101.218407][ C3] ? fs_reclaim_acquire (mm/page_alloc.c:3715 mm/page_alloc.c:3706) 
[ 101.218557][ C3] ? p9pdu_vreadf (./include/linux/slab.h:632 net/9p/protocol.c:313) 
[ 101.218711][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 101.218869][ C3] ? p9pdu_vreadf (./include/linux/slab.h:632 net/9p/protocol.c:313) 
[ 101.219021][ C3] ? __kmalloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3965 mm/slub.c:3979) 
[ 101.219173][ C3] __kmalloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3965 mm/slub.c:3979) 
[ 101.219291][ C3] p9pdu_vreadf (./include/linux/slab.h:632 net/9p/protocol.c:313) 
[ 101.219443][ C3] ? trace_9p_client_res (./include/trace/events/9p.h:146 (discriminator 52)) 
[ 101.219595][ C3] ? p9_client_rpc (net/9p/client.c:755) 
[ 101.219747][ C3] ? __pfx_p9pdu_vreadf (net/9p/protocol.c:260) 
[ 101.219903][ C3] ? __pfx_p9_client_rpc (net/9p/client.c:672) 
[ 101.220059][ C3] p9pdu_readf (net/9p/protocol.c:696) 
[ 101.220176][ C3] ? __pfx_p9pdu_readf (net/9p/protocol.c:696) 
[ 101.220338][ C3] ? __pfx_v9fs_fid_find (fs/9p/fid.c:114) 
[ 101.220492][ C3] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:94 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 101.220645][ C3] ? v9fs_fid_add (fs/9p/fid.c:41) 
[ 101.220801][ C3] p9_client_readlink (net/9p/client.c:2242) 
[ 101.220953][ C3] v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:822 fs/9p/vfs_inode_dotl.c:806) 
[ 101.221103][ C3] ? __pfx_v9fs_vfs_get_link_dotl (fs/9p/vfs_inode_dotl.c:809) 
[ 101.221302][ C3] ? __lookup_slow (fs/namei.c:1692) 
[ 101.221454][ C3] pick_link (fs/namei.c:1808) 
[ 101.221568][ C3] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 101.221721][ C3] step_into (fs/namei.c:1874) 
[ 101.221836][ C3] ? __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) 
[ 101.221994][ C3] ? __pfx_step_into (fs/namei.c:1839) 
[ 101.222255][ C3] ? walk_component (fs/namei.c:2005) 
[ 101.222410][ C3] link_path_walk.part.0.constprop.0 (fs/namei.c:2331) 
[ 101.222596][ C3] ? __pfx_link_path_walk.part.0.constprop.0 (fs/namei.c:2249) 
[ 101.222790][ C3] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) 
[ 101.222942][ C3] ? 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) 
[ 101.223094][ C3] path_lookupat (fs/namei.c:2254 (discriminator 2) fs/namei.c:2484 (discriminator 2)) 
[ 101.223245][ C3] filename_lookup (fs/namei.c:2514) 
[ 101.223411][ C3] ? __pfx_filename_lookup (fs/namei.c:2508) 
[ 101.223659][ C3] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 101.223811][ C3] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 101.223961][ C3] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 101.224115][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 101.224265][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 101.224523][ C3] vfs_statx (fs/stat.c:244) 
[ 101.224637][ C3] ? __pfx_vfs_statx (fs/stat.c:234) 
[ 101.224786][ C3] ? 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) 
[ 101.224942][ C3] vfs_fstatat (fs/stat.c:305) 
[ 101.225055][ C3] __do_sys_newfstatat (fs/stat.c:469) 
[ 101.225216][ C3] ? __pfx___do_sys_newfstatat (fs/stat.c:464) 
[ 101.225370][ C3] ? __x64_sys_openat (fs/open.c:1432) 
[ 101.225521][ C3] ? __pfx___x64_sys_openat (fs/open.c:1432) 
[ 101.225669][ C3] ? __pfx_do_faccessat (fs/open.c:465) 
[ 101.225925][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 101.226112][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 101.226265][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[  101.226554][    C3] RIP: 0033:0x7f3f2d754eae
[ 101.226711][ C3] 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
[  101.227359][    C3] RSP: 002b:00007ffc5b1acbf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
[  101.227586][    C3] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f3f2d754eae
[  101.227819][    C3] RDX: 00007ffc5b1accc0 RSI: 00007ffc5b1acc00 RDI: 00000000ffffff9c
[  101.228048][    C3] RBP: 00007ffc5b1acd80 R08: 00000000ffffffff R09: 00007ffc5b1acc00
[  101.228270][    C3] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc5b1acc07


Finger prints:
dump_stack_lvl:mark_lock_irq:mark_lock:mark_usage