======================================
| # 161.41 [+0.00] [  628.423686] [    C0] hardirqs last  enabled at (742650): irqentry_exit (kernel/entry/common.c:220)
| # 161.42 [+0.01] [  628.423695] [    C0] hardirqs last disabled at (742651): sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1056)
| # 161.44 [+0.01] [  628.423698] [    C0] softirqs last  enabled at (0): copy_process (kernel/fork.c:2168 (discriminator 1))
| # 161.45 [+0.01] [  628.423702] [    C0] softirqs last disabled at (23): irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
# 161.47 [+0.01] [  628.423710] [    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# 161.48 [+0.01] [  628.423712] [    C0] Workqueue: mm_percpu_wq vmstat_update
# 161.48 [+0.01] [  628.423718] [    C0] RIP: 0010:orc_find.part.0 (arch/x86/kernel/unwind_orc.c:228)
# 161.49 [+0.01] [  628.423722] [    C0] Code: 41 89 c2 39 d0 0f 83 19 02 00 00 48 ba 00 00 00 00 00 fc ff df 89 c1 48 8d 3c 8d 4c 7b 25 88 48 89 fe 48 c1 ee 03 0f b6 34 16 <48> 89 fa 83 e2 07 83 c2 03 40 38 f2 7c 09 40 84 f6 0f 85 86 01 00
All code
========
   0:	41 89 c2             	mov    %eax,%r10d
   3:	39 d0                	cmp    %edx,%eax
   5:	0f 83 19 02 00 00    	jae    0x224
   b:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  12:	fc ff df 
  15:	89 c1                	mov    %eax,%ecx
  17:	48 8d 3c 8d 4c 7b 25 	lea    -0x77da84b4(,%rcx,4),%rdi
  1e:	88 
  1f:	48 89 fe             	mov    %rdi,%rsi
  22:	48 c1 ee 03          	shr    $0x3,%rsi
  26:	0f b6 34 16          	movzbl (%rsi,%rdx,1),%esi
  2a:*	48 89 fa             	mov    %rdi,%rdx		<-- trapping instruction
  2d:	83 e2 07             	and    $0x7,%edx
  30:	83 c2 03             	add    $0x3,%edx
  33:	40 38 f2             	cmp    %sil,%dl
  36:	7c 09                	jl     0x41
  38:	40 84 f6             	test   %sil,%sil
  3b:	0f                   	.byte 0xf
  3c:	85                   	.byte 0x85
  3d:	86 01                	xchg   %al,(%rcx)
	...

Code starting with the faulting instruction
===========================================
   0:	48 89 fa             	mov    %rdi,%rdx
   3:	83 e2 07             	and    $0x7,%edx
   6:	83 c2 03             	add    $0x3,%edx
   9:	40 38 f2             	cmp    %sil,%dl
   c:	7c 09                	jl     0x17
   e:	40 84 f6             	test   %sil,%sil
  11:	0f                   	.byte 0xf
  12:	85                   	.byte 0x85
  13:	86 01                	xchg   %al,(%rcx)
	...
# 161.51 [+0.02] [  628.423723] [    C0] RSP: 0018:ffa0000000007178 EFLAGS: 00000212
# 161.52 [+0.01] [  628.423726] [    C0] RAX: 00000000000067cf RBX: ffffffff8407cf5a RCX: 00000000000067cf
# 161.53 [+0.01] [  628.423727] [    C0] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffffff88271a88
# 161.53 [+0.01] [  628.423728] [    C0] RBP: 0000000000000001 R08: ff11000005d1d030 R09: ff11000005d1d030
# 161.54 [+0.01] [  628.423729] [    C0] R10: 00000000000067cf R11: 000000000002af88 R12: ffa0000000007308
# 161.55 [+0.01] [  628.423730] [    C0] R13: ffa00000000072b0 R14: 0000000000000000 R15: ff11000005d1c540
# 161.56 [+0.01] [  628.423732] [    C0] FS:  0000000000000000(0000) GS:ff110000accd1000(0000) knlGS:0000000000000000
# 161.57 [+0.01] [  628.423736] [    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
# 161.58 [+0.01] [  628.423737] [    C0] CR2: 000055fd0874b000 CR3: 000000000ef2f006 CR4: 0000000000771ef0
# 161.59 [+0.01] [  628.423738] [    C0] PKRU: 55555554
# 161.59 [+0.00] [  628.423738] [    C0] Call Trace:
# 161.59 [+0.00] [  628.423741] [    C0]  <IRQ>
# 161.60 [+0.00] [  628.423746] [    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
# 161.60 [+0.01] [  628.423749] [    C0]  unwind_next_frame (arch/x86/kernel/unwind_orc.c:511)
# 161.61 [+0.01] [  628.423752] [    C0]  ? ret_from_fork (arch/x86/kernel/process.c:164)
# 161.61 [+0.01] [  628.423758] [    C0]  ? stack_access_ok (arch/x86/kernel/unwind_orc.c:485)
# 161.62 [+0.01] [  628.423760] [    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
# 161.63 [+0.01] [  628.423764] [    C0]  ? __unwind_start (./arch/x86/include/asm/unwind.h:50 arch/x86/kernel/unwind_orc.c:770)
# 161.63 [+0.01] [  628.423767] [    C0]  ? write_profile (kernel/stacktrace.c:83)
# 161.64 [+0.01] [  628.423771] [    C0]  arch_stack_walk (arch/x86/kernel/stacktrace.c:24 (discriminator 3))
# 161.64 [+0.01] [  628.423776] [    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
# 161.65 [+0.01] [  628.423778] [    C0]  ? ret_from_fork (arch/x86/kernel/process.c:164)
# 161.65 [+0.01] [  628.423782] [    C0]  stack_trace_save (kernel/stacktrace.c:123)
# 161.66 [+0.01] [  628.423784] [    C0]  ? filter_irq_stacks (kernel/stacktrace.c:114)
# 161.66 [+0.01] [  628.423787] [    C0]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
# 161.67 [+0.01] [  628.423789] [    C0]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
# 161.67 [+0.01] [  628.423793] [    C0]  kasan_save_stack (mm/kasan/common.c:58)
# 161.68 [+0.01] [  628.423796] [    C0]  ? kasan_save_stack (mm/kasan/common.c:58)
# 161.69 [+0.01] [  628.423798] [    C0]  ? kasan_record_aux_stack (mm/kasan/generic.c:556 (discriminator 1))
# 161.69 [+0.01] [  628.423799] [    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:3121)
# 161.70 [+0.01] [  628.423801] [    C0]  ? __dev_queue_xmit (./include/net/dst.h:279 net/core/dev.c:4791)
# 161.70 [+0.01] [  628.423805] [    C0]  ? ip6_finish_output2 (./include/net/neighbour.h:554 net/ipv6/ip6_output.c:136)
# 161.71 [+0.01] [  628.423808] [    C0]  ? ip6_finish_output (net/ipv6/ip6_output.c:208 net/ipv6/ip6_output.c:219)
# 161.72 [+0.01] [  628.423809] [    C0]  ? ip6_output (./include/linux/netfilter.h:307 net/ipv6/ip6_output.c:246)
# 161.72 [+0.01] [  628.423811] [    C0]  ? ndisc_send_skb (./include/net/dst.h:464 (discriminator 4) ./include/linux/netfilter.h:318 (discriminator 4) net/ipv6/ndisc.c:512 (discriminator 4))
# 161.73 [+0.01] [  628.423813] [    C0]  ? addrconf_rs_timer (net/ipv6/addrconf.c:4042)
# 161.73 [+0.01] [  628.423815] [    C0]  ? call_timer_fn (kernel/time/timer.c:1749)
# 161.74 [+0.01] [  628.423817] [    C0]  ? __run_timers (kernel/time/timer.c:1800 kernel/time/timer.c:2373)
# 161.74 [+0.01] [  628.423819] [    C0]  ? run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2394 kernel/time/timer.c:2402)
# 161.75 [+0.01] [  628.423821] [    C0]  ? handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
# 161.76 [+0.01] [  628.423823] [    C0]  ? irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
# 161.76 [+0.01] [  628.423824] [    C0]  ? common_interrupt (arch/x86/kernel/irq.c:319 (discriminator 49))
# 161.77 [+0.01] [  628.423826] [    C0]  ? asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
# 161.77 [+0.01] [  628.423828] [    C0]  ? __might_resched (kernel/sched/core.c:8789 (discriminator 4))
# 161.78 [+0.01] [  628.423831] [    C0]  ? process_one_work (./include/linux/sched.h:2062 kernel/workqueue.c:3290)
# 161.78 [+0.01] [  628.423833] [    C0]  ? worker_thread (kernel/workqueue.c:3334 (discriminator 2) kernel/workqueue.c:3421 (discriminator 2))
# 161.79 [+0.01] [  628.423834] [    C0]  ? kthread (kernel/kthread.c:463)
# 161.80 [+0.00] [  628.423835] [    C0]  ? ret_from_fork (arch/x86/kernel/process.c:164)
# 161.80 [+0.01] [  628.423848] [    C0]  kasan_record_aux_stack (mm/kasan/generic.c:556 (discriminator 1))
# 161.81 [+0.01] [  628.423849] [    C0]  ? dst_destroy (net/core/dst.c:130)
# 161.81 [+0.01] [  628.423851] [    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:3121)
# 161.82 [+0.01] [  628.423853] [    C0]  ? dst_release (./include/net/dst_ops.h:61 net/core/dst.c:163 net/core/dst.c:160 net/core/dst.c:177 net/core/dst.c:166)
# 161.82 [+0.01] [  628.423856] [    C0]  __dev_queue_xmit (./include/net/dst.h:279 net/core/dev.c:4791)
# 161.83 [+0.01] [  628.423860] [    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
# 161.84 [+0.01] [  628.423864] [    C0]  ? netdev_core_pick_tx (net/core/dev.c:4744)
# 161.84 [+0.01] [  628.423866] [    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
# 161.85 [+0.01] [  628.423872] [    C0]  ? neigh_hh_output (./include/net/neighbour.h:521)
# 161.85 [+0.01] [  628.423877] [    C0]  ip6_finish_output2 (./include/net/neighbour.h:554 net/ipv6/ip6_output.c:136)
# 161.86 [+0.01] [  628.423881] [    C0]  ? ip6_xmit (net/ipv6/ip6_output.c:61)
# 161.86 [+0.00] [  628.423883] [    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
# 161.87 [+0.01] [  628.423885] [    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
# 161.88 [+0.01] [  628.423887] [    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
# 161.88 [+0.01] [  628.423890] [    C0]  ? ip6_mtu (./include/linux/rcupdate.h:341 (discriminator 1) ./include/linux/rcupdate.h:897 (discriminator 1) ./include/net/ip6_route.h:343 (discriminator 1) net/ipv6/route.c:3277 (discriminator 1))
# 161.89 [+0.00] [  628.423894] [    C0]  ip6_finish_output (net/ipv6/ip6_output.c:208 net/ipv6/ip6_output.c:219)
# 161.89 [+0.01] [  628.423898] [    C0]  ip6_output (./include/linux/netfilter.h:307 net/ipv6/ip6_output.c:246)
# 161.90 [+0.00] [  628.423901] [    C0]  ? ip6_finish_output (net/ipv6/ip6_output.c:227)
# 161.90 [+0.01] [  628.423903] [    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
# 161.91 [+0.01] [  628.423905] [    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
# 161.91 [+0.01] [  628.423907] [    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
# 161.92 [+0.01] [  628.423909] [    C0]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
# 161.93 [+0.01] [  628.423913] [    C0]  ndisc_send_skb (./include/net/dst.h:464 (discriminator 4) ./include/linux/netfilter.h:318 (discriminator 4) net/ipv6/ndisc.c:512 (discriminator 4))
# 161.93 [+0.01] [  628.423917] [    C0]  ? ndisc_ns_create (net/ipv6/ndisc.c:470)
# 161.94 [+0.01] [  628.423921] [    C0]  ? __ndisc_fill_addr_option (net/ipv6/ndisc.c:160)
# 161.94 [+0.01] [  628.423926] [    C0]  addrconf_rs_timer (net/ipv6/addrconf.c:4042)
# 161.95 [+0.01] [  628.423929] [    C0]  ? ipv6_get_lladdr (net/ipv6/addrconf.c:4015)
# 161.95 [+0.01] [  628.423932] [    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
# 161.96 [+0.01] [  628.423934] [    C0]  ? call_timer_fn (kernel/time/timer.c:1745 (discriminator 1))
# 161.97 [+0.01] [  628.423936] [    C0]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 33) kernel/locking/lockdep.c:5831 (discriminator 33))
# 161.97 [+0.01] [  628.423938] [    C0]  ? ipv6_get_lladdr (net/ipv6/addrconf.c:4015)
# 161.98 [+0.01] [  628.423941] [    C0]  call_timer_fn (kernel/time/timer.c:1749)
# 161.98 [+0.01] [  628.423943] [    C0]  ? detach_if_pending (kernel/time/timer.c:1725)
# 161.99 [+0.01] [  628.423946] [    C0]  ? debug_object_active_state (lib/debugobjects.c:862)
# 161.99 [+0.01] [  628.423951] [    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
# 162.00 [+0.01] [  628.423953] [    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
# 162.00 [+0.01] [  628.423956] [    C0]  __run_timers (kernel/time/timer.c:1800 kernel/time/timer.c:2373)
# 162.01 [+0.00] [  628.423959] [    C0]  ? ipv6_get_lladdr (net/ipv6/addrconf.c:4015)
# 162.01 [+0.01] [  628.423962] [    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
# 162.02 [+0.01] [  628.423964] [    C0]  ? __bpf_trace_itimer_expire (kernel/time/timer.c:2344)
# 162.03 [+0.01] [  628.423967] [    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
# 162.03 [+0.01] [  628.423972] [    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
# 162.04 [+0.01] [  628.423975] [    C0]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 33) kernel/locking/lockdep.c:5831 (discriminator 33))
# 162.04 [+0.01] [  628.423979] [    C0]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2394 kernel/time/timer.c:2402)
# 162.05 [+0.01] [  628.423981] [    C0]  ? __run_timers (kernel/time/timer.c:2401)
# 162.05 [+0.01] [  628.423984] [    C0]  ? handle_softirqs (kernel/softirq.c:608)
# 162.06 [+0.01] [  628.423986] [    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
# 162.06 [+0.01] [  628.423988] [    C0]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
# 162.07 [+0.01] [  628.423992] [    C0]  ? _local_bh_enable (kernel/softirq.c:580)
# 162.07 [+0.01] [  628.423994] [    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)
# 162.08 [+0.01] [  628.423998] [    C0]  irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
# 162.08 [+0.00] [  628.423999] [    C0]  common_interrupt (arch/x86/kernel/irq.c:319 (discriminator 49))
# 162.09 [+0.01] [  628.424002] [    C0]  </IRQ>
# 162.09 [+0.00] [  628.424002] [    C0]  <TASK>
# 162.10 [+0.00] [  628.424004] [    C0]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
# 162.10 [+0.01] [  628.424006] [    C0] RIP: 0010:__might_resched (kernel/sched/core.c:8789 (discriminator 4))
# 162.11 [+0.01] [  628.424007] [    C0] Code: 48 c7 44 24 10 76 d2 d9 86 48 c1 eb 03 48 c7 44 24 18 50 53 22 84 c7 04 18 f1 f1 f1 f1 c7 44 18 04 00 f3 f3 f3 e8 91 77 2a 02 <85> c0 0f 85 d6 01 00 00 e8 84 77 2a 02 85 c0 0f 85 2a 02 00 00 65
All code
========
   0:	48 c7 44 24 10 76 d2 	movq   $0xffffffff86d9d276,0x10(%rsp)
   7:	d9 86 
   9:	48 c1 eb 03          	shr    $0x3,%rbx
   d:	48 c7 44 24 18 50 53 	movq   $0xffffffff84225350,0x18(%rsp)
  14:	22 84 
  16:	c7 04 18 f1 f1 f1 f1 	movl   $0xf1f1f1f1,(%rax,%rbx,1)
  1d:	c7 44 18 04 00 f3 f3 	movl   $0xf3f3f300,0x4(%rax,%rbx,1)
  24:	f3 
  25:	e8 91 77 2a 02       	call   0x22a77bb
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 d6 01 00 00    	jne    0x208
  32:	e8 84 77 2a 02       	call   0x22a77bb
  37:	85 c0                	test   %eax,%eax
  39:	0f 85 2a 02 00 00    	jne    0x269
  3f:	65                   	gs

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 d6 01 00 00    	jne    0x1de
   8:	e8 84 77 2a 02       	call   0x22a7791
   d:	85 c0                	test   %eax,%eax
   f:	0f 85 2a 02 00 00    	jne    0x23f
  15:	65                   	gs
# 162.13 [+0.02] [  628.424009] [    C0] RSP: 0018:ffa00000005f7ba0 EFLAGS: 00000246
# 162.13 [+0.01] [  628.424010] [    C0] RAX: 0000000000000001 RBX: 1ff40000000bef75 RCX: 0000000000000000
# 162.14 [+0.01] [  628.424011] [    C0] RDX: 0000000000000000 RSI: 0000000000000cda RDI: ffffffff866b2620
# 162.15 [+0.01] [  628.424011] [    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff0f8660a
# 162.16 [+0.01] [  628.424012] [    C0] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff87c33f34
# 162.17 [+0.01] [  628.424013] [    C0] R13: ff11000019750040 R14: ffffffff866b2620 R15: 0000000000000cda
# 162.18 [+0.01] [  628.424019] [    C0]  ? perf_trace_sched_switch (kernel/sched/core.c:8782)
# 162.18 [+0.01] [  628.424022] [    C0]  ? process_one_work (kernel/workqueue.c:3262)
# 162.19 [+0.01] [  628.424026] [    C0]  process_one_work (./include/linux/sched.h:2062 kernel/workqueue.c:3290)
# 162.20 [+0.01] [  628.424035] [    C0]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:3159)
# 162.20 [+0.01] [  628.424037] [    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
# 162.21 [+0.01] [  628.424044] [    C0]  ? assign_work (kernel/workqueue.c:1200)
# 162.21 [+0.01] [  628.424049] [    C0]  worker_thread (kernel/workqueue.c:3334 (discriminator 2) kernel/workqueue.c:3421 (discriminator 2))
# 162.22 [+0.01] [  628.424052] [    C0]  ? process_one_work (kernel/workqueue.c:3367)
# 162.22 [+0.01] [  628.424054] [    C0]  ? __kthread_parkme (./arch/x86/include/asm/bitops.h:202 (discriminator 1) ./arch/x86/include/asm/bitops.h:232 (discriminator 1) ./include/asm-generic/bitops/instrumented-non-atomic.h:142 (discriminator 1) kernel/kthread.c:290 (discriminator 1))
# 162.23 [+0.01] [  628.424058] [    C0]  ? process_one_work (kernel/workqueue.c:3367)
# 162.23 [+0.01] [  628.424059] [    C0]  kthread (kernel/kthread.c:463)
# 162.24 [+0.00] [  628.424061] [    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
# 162.24 [+0.01] [  628.424063] [    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
# 162.25 [+0.01] [  628.424065] [    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
# 162.26 [+0.01] [  628.424067] [    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
# 162.26 [+0.01] [  628.424069] [    C0]  ret_from_fork (arch/x86/kernel/process.c:164)
# 162.27 [+0.01] [  628.424072] [    C0]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
# 162.27 [+0.01] [  628.424075] [    C0]  ? __switch_to (./arch/x86/include/asm/cpufeature.h:101 arch/x86/kernel/process_64.c:377 arch/x86/kernel/process_64.c:665)
# 162.28 [+0.01] [  628.424078] [    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
# 162.28 [+0.01] [  628.424080] [    C0]  ret_from_fork_asm (arch/x86/entry/entry_64.S:256)
| [  628.423686][    C0] hardirqs last  enabled at (742650): irqentry_exit (kernel/entry/common.c:220)
| [  628.423695][    C0] hardirqs last disabled at (742651): sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1056)
| [  628.423698][    C0] softirqs last  enabled at (0): copy_process (kernel/fork.c:2168 (discriminator 1))
| [  628.423702][    C0] softirqs last disabled at (23): irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
[  628.423710][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  628.423712][    C0] Workqueue: mm_percpu_wq vmstat_update
[  628.423718][    C0] RIP: 0010:orc_find.part.0 (arch/x86/kernel/unwind_orc.c:228)
[  628.423722][    C0] Code: 41 89 c2 39 d0 0f 83 19 02 00 00 48 ba 00 00 00 00 00 fc ff df 89 c1 48 8d 3c 8d 4c 7b 25 88 48 89 fe 48 c1 ee 03 0f b6 34 16 <48> 89 fa 83 e2 07 83 c2 03 40 38 f2 7c 09 40 84 f6 0f 85 86 01 00
All code
========
   0:	41 89 c2             	mov    %eax,%r10d
   3:	39 d0                	cmp    %edx,%eax
   5:	0f 83 19 02 00 00    	jae    0x224
   b:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  12:	fc ff df 
  15:	89 c1                	mov    %eax,%ecx
  17:	48 8d 3c 8d 4c 7b 25 	lea    -0x77da84b4(,%rcx,4),%rdi
  1e:	88 
  1f:	48 89 fe             	mov    %rdi,%rsi
  22:	48 c1 ee 03          	shr    $0x3,%rsi
  26:	0f b6 34 16          	movzbl (%rsi,%rdx,1),%esi
  2a:*	48 89 fa             	mov    %rdi,%rdx		<-- trapping instruction
  2d:	83 e2 07             	and    $0x7,%edx
  30:	83 c2 03             	add    $0x3,%edx
  33:	40 38 f2             	cmp    %sil,%dl
  36:	7c 09                	jl     0x41
  38:	40 84 f6             	test   %sil,%sil
  3b:	0f                   	.byte 0xf
  3c:	85                   	.byte 0x85
  3d:	86 01                	xchg   %al,(%rcx)
	...

Code starting with the faulting instruction
===========================================
   0:	48 89 fa             	mov    %rdi,%rdx
   3:	83 e2 07             	and    $0x7,%edx
   6:	83 c2 03             	add    $0x3,%edx
   9:	40 38 f2             	cmp    %sil,%dl
   c:	7c 09                	jl     0x17
   e:	40 84 f6             	test   %sil,%sil
  11:	0f                   	.byte 0xf
  12:	85                   	.byte 0x85
  13:	86 01                	xchg   %al,(%rcx)
	...
[  628.423723][    C0] RSP: 0018:ffa0000000007178 EFLAGS: 00000212
[  628.423726][    C0] RAX: 00000000000067cf RBX: ffffffff8407cf5a RCX: 00000000000067cf
[  628.423727][    C0] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffffff88271a88
[  628.423728][    C0] RBP: 0000000000000001 R08: ff11000005d1d030 R09: ff11000005d1d030
[  628.423729][    C0] R10: 00000000000067cf R11: 000000000002af88 R12: ffa0000000007308
[  628.423730][    C0] R13: ffa00000000072b0 R14: 0000000000000000 R15: ff11000005d1c540
[  628.423732][    C0] FS:  0000000000000000(0000) GS:ff110000accd1000(0000) knlGS:0000000000000000
[  628.423736][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  628.423737][    C0] CR2: 000055fd0874b000 CR3: 000000000ef2f006 CR4: 0000000000771ef0
[  628.423738][    C0] PKRU: 55555554
[  628.423738][    C0] Call Trace:
[  628.423741][    C0]  <IRQ>
[  628.423746][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  628.423749][    C0]  unwind_next_frame (arch/x86/kernel/unwind_orc.c:511)
[  628.423752][    C0]  ? ret_from_fork (arch/x86/kernel/process.c:164)
[  628.423758][    C0]  ? stack_access_ok (arch/x86/kernel/unwind_orc.c:485)
[  628.423760][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  628.423764][    C0]  ? __unwind_start (./arch/x86/include/asm/unwind.h:50 arch/x86/kernel/unwind_orc.c:770)
[  628.423767][    C0]  ? write_profile (kernel/stacktrace.c:83)
[  628.423771][    C0]  arch_stack_walk (arch/x86/kernel/stacktrace.c:24 (discriminator 3))
[  628.423776][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  628.423778][    C0]  ? ret_from_fork (arch/x86/kernel/process.c:164)
[  628.423782][    C0]  stack_trace_save (kernel/stacktrace.c:123)
[  628.423784][    C0]  ? filter_irq_stacks (kernel/stacktrace.c:114)
[  628.423787][    C0]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[  628.423789][    C0]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 4) kernel/locking/lockdep.c:3821 (discriminator 4) kernel/locking/lockdep.c:3876 (discriminator 4))
[  628.423793][    C0]  kasan_save_stack (mm/kasan/common.c:58)
[  628.423796][    C0]  ? kasan_save_stack (mm/kasan/common.c:58)
[  628.423798][    C0]  ? kasan_record_aux_stack (mm/kasan/generic.c:556 (discriminator 1))
[  628.423799][    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:3121)
[  628.423801][    C0]  ? __dev_queue_xmit (./include/net/dst.h:279 net/core/dev.c:4791)
[  628.423805][    C0]  ? ip6_finish_output2 (./include/net/neighbour.h:554 net/ipv6/ip6_output.c:136)
[  628.423808][    C0]  ? ip6_finish_output (net/ipv6/ip6_output.c:208 net/ipv6/ip6_output.c:219)
[  628.423809][    C0]  ? ip6_output (./include/linux/netfilter.h:307 net/ipv6/ip6_output.c:246)
[  628.423811][    C0]  ? ndisc_send_skb (./include/net/dst.h:464 (discriminator 4) ./include/linux/netfilter.h:318 (discriminator 4) net/ipv6/ndisc.c:512 (discriminator 4))
[  628.423813][    C0]  ? addrconf_rs_timer (net/ipv6/addrconf.c:4042)
[  628.423815][    C0]  ? call_timer_fn (kernel/time/timer.c:1749)
[  628.423817][    C0]  ? __run_timers (kernel/time/timer.c:1800 kernel/time/timer.c:2373)
[  628.423819][    C0]  ? run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2394 kernel/time/timer.c:2402)
[  628.423821][    C0]  ? handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[  628.423823][    C0]  ? irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
[  628.423824][    C0]  ? common_interrupt (arch/x86/kernel/irq.c:319 (discriminator 49))
[  628.423826][    C0]  ? asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[  628.423828][    C0]  ? __might_resched (kernel/sched/core.c:8789 (discriminator 4))
[  628.423831][    C0]  ? process_one_work (./include/linux/sched.h:2062 kernel/workqueue.c:3290)
[  628.423833][    C0]  ? worker_thread (kernel/workqueue.c:3334 (discriminator 2) kernel/workqueue.c:3421 (discriminator 2))
[  628.423834][    C0]  ? kthread (kernel/kthread.c:463)
[  628.423835][    C0]  ? ret_from_fork (arch/x86/kernel/process.c:164)
[  628.423848][    C0]  kasan_record_aux_stack (mm/kasan/generic.c:556 (discriminator 1))
[  628.423849][    C0]  ? dst_destroy (net/core/dst.c:130)
[  628.423851][    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:3121)
[  628.423853][    C0]  ? dst_release (./include/net/dst_ops.h:61 net/core/dst.c:163 net/core/dst.c:160 net/core/dst.c:177 net/core/dst.c:166)
[  628.423856][    C0]  __dev_queue_xmit (./include/net/dst.h:279 net/core/dev.c:4791)
[  628.423860][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[  628.423864][    C0]  ? netdev_core_pick_tx (net/core/dev.c:4744)
[  628.423866][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  628.423872][    C0]  ? neigh_hh_output (./include/net/neighbour.h:521)
[  628.423877][    C0]  ip6_finish_output2 (./include/net/neighbour.h:554 net/ipv6/ip6_output.c:136)
[  628.423881][    C0]  ? ip6_xmit (net/ipv6/ip6_output.c:61)
[  628.423883][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  628.423885][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[  628.423887][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  628.423890][    C0]  ? ip6_mtu (./include/linux/rcupdate.h:341 (discriminator 1) ./include/linux/rcupdate.h:897 (discriminator 1) ./include/net/ip6_route.h:343 (discriminator 1) net/ipv6/route.c:3277 (discriminator 1))
[  628.423894][    C0]  ip6_finish_output (net/ipv6/ip6_output.c:208 net/ipv6/ip6_output.c:219)
[  628.423898][    C0]  ip6_output (./include/linux/netfilter.h:307 net/ipv6/ip6_output.c:246)
[  628.423901][    C0]  ? ip6_finish_output (net/ipv6/ip6_output.c:227)
[  628.423903][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  628.423905][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[  628.423907][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  628.423909][    C0]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  628.423913][    C0]  ndisc_send_skb (./include/net/dst.h:464 (discriminator 4) ./include/linux/netfilter.h:318 (discriminator 4) net/ipv6/ndisc.c:512 (discriminator 4))
[  628.423917][    C0]  ? ndisc_ns_create (net/ipv6/ndisc.c:470)
[  628.423921][    C0]  ? __ndisc_fill_addr_option (net/ipv6/ndisc.c:160)
[  628.423926][    C0]  addrconf_rs_timer (net/ipv6/addrconf.c:4042)
[  628.423929][    C0]  ? ipv6_get_lladdr (net/ipv6/addrconf.c:4015)
[  628.423932][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  628.423934][    C0]  ? call_timer_fn (kernel/time/timer.c:1745 (discriminator 1))
[  628.423936][    C0]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 33) kernel/locking/lockdep.c:5831 (discriminator 33))
[  628.423938][    C0]  ? ipv6_get_lladdr (net/ipv6/addrconf.c:4015)
[  628.423941][    C0]  call_timer_fn (kernel/time/timer.c:1749)
[  628.423943][    C0]  ? detach_if_pending (kernel/time/timer.c:1725)
[  628.423946][    C0]  ? debug_object_active_state (lib/debugobjects.c:862)
[  628.423951][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  628.423953][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  628.423956][    C0]  __run_timers (kernel/time/timer.c:1800 kernel/time/timer.c:2373)
[  628.423959][    C0]  ? ipv6_get_lladdr (net/ipv6/addrconf.c:4015)
[  628.423962][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[  628.423964][    C0]  ? __bpf_trace_itimer_expire (kernel/time/timer.c:2344)
[  628.423967][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[  628.423972][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[  628.423975][    C0]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 33) kernel/locking/lockdep.c:5831 (discriminator 33))
[  628.423979][    C0]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2394 kernel/time/timer.c:2402)
[  628.423981][    C0]  ? __run_timers (kernel/time/timer.c:2401)
[  628.423984][    C0]  ? handle_softirqs (kernel/softirq.c:608)
[  628.423986][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  628.423988][    C0]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[  628.423992][    C0]  ? _local_bh_enable (kernel/softirq.c:580)
[  628.423994][    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)
[  628.423998][    C0]  irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
[  628.423999][    C0]  common_interrupt (arch/x86/kernel/irq.c:319 (discriminator 49))
[  628.424002][    C0]  </IRQ>
[  628.424002][    C0]  <TASK>
[  628.424004][    C0]  asm_common_interrupt (./arch/x86/include/asm/idtentry.h:688)
[  628.424006][    C0] RIP: 0010:__might_resched (kernel/sched/core.c:8789 (discriminator 4))
[  628.424007][    C0] Code: 48 c7 44 24 10 76 d2 d9 86 48 c1 eb 03 48 c7 44 24 18 50 53 22 84 c7 04 18 f1 f1 f1 f1 c7 44 18 04 00 f3 f3 f3 e8 91 77 2a 02 <85> c0 0f 85 d6 01 00 00 e8 84 77 2a 02 85 c0 0f 85 2a 02 00 00 65
All code
========
   0:	48 c7 44 24 10 76 d2 	movq   $0xffffffff86d9d276,0x10(%rsp)
   7:	d9 86 
   9:	48 c1 eb 03          	shr    $0x3,%rbx
   d:	48 c7 44 24 18 50 53 	movq   $0xffffffff84225350,0x18(%rsp)
  14:	22 84 
  16:	c7 04 18 f1 f1 f1 f1 	movl   $0xf1f1f1f1,(%rax,%rbx,1)
  1d:	c7 44 18 04 00 f3 f3 	movl   $0xf3f3f300,0x4(%rax,%rbx,1)
  24:	f3 
  25:	e8 91 77 2a 02       	call   0x22a77bb
  2a:*	85 c0                	test   %eax,%eax		<-- trapping instruction
  2c:	0f 85 d6 01 00 00    	jne    0x208
  32:	e8 84 77 2a 02       	call   0x22a77bb
  37:	85 c0                	test   %eax,%eax
  39:	0f 85 2a 02 00 00    	jne    0x269
  3f:	65                   	gs

Code starting with the faulting instruction
===========================================
   0:	85 c0                	test   %eax,%eax
   2:	0f 85 d6 01 00 00    	jne    0x1de
   8:	e8 84 77 2a 02       	call   0x22a7791
   d:	85 c0                	test   %eax,%eax
   f:	0f 85 2a 02 00 00    	jne    0x23f
  15:	65                   	gs
[  628.424009][    C0] RSP: 0018:ffa00000005f7ba0 EFLAGS: 00000246
[  628.424010][    C0] RAX: 0000000000000001 RBX: 1ff40000000bef75 RCX: 0000000000000000
[  628.424011][    C0] RDX: 0000000000000000 RSI: 0000000000000cda RDI: ffffffff866b2620
[  628.424011][    C0] RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff0f8660a
[  628.424012][    C0] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff87c33f34
[  628.424013][    C0] R13: ff11000019750040 R14: ffffffff866b2620 R15: 0000000000000cda
[  628.424019][    C0]  ? perf_trace_sched_switch (kernel/sched/core.c:8782)
[  628.424022][    C0]  ? process_one_work (kernel/workqueue.c:3262)
[  628.424026][    C0]  process_one_work (./include/linux/sched.h:2062 kernel/workqueue.c:3290)
[  628.424035][    C0]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:3159)
[  628.424037][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  628.424044][    C0]  ? assign_work (kernel/workqueue.c:1200)
[  628.424049][    C0]  worker_thread (kernel/workqueue.c:3334 (discriminator 2) kernel/workqueue.c:3421 (discriminator 2))
[  628.424052][    C0]  ? process_one_work (kernel/workqueue.c:3367)
[  628.424054][    C0]  ? __kthread_parkme (./arch/x86/include/asm/bitops.h:202 (discriminator 1) ./arch/x86/include/asm/bitops.h:232 (discriminator 1) ./include/asm-generic/bitops/instrumented-non-atomic.h:142 (discriminator 1) kernel/kthread.c:290 (discriminator 1))
[  628.424058][    C0]  ? process_one_work (kernel/workqueue.c:3367)
[  628.424059][    C0]  kthread (kernel/kthread.c:463)
[  628.424061][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  628.424063][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  628.424065][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  628.424067][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  628.424069][    C0]  ret_from_fork (arch/x86/kernel/process.c:164)
[  628.424072][    C0]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  628.424075][    C0]  ? __switch_to (./arch/x86/include/asm/cpufeature.h:101 arch/x86/kernel/process_64.c:377 arch/x86/kernel/process_64.c:665)
[  628.424078][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)


Finger prints:
irqentry_exit:sysvec_apic_timer_interrupt:copy_process:irq_exit_rcu:unwind_next_frame