======================================
| # 139.37 [+0.00] [  216.393640] [    C0] hardirqs last  enabled at (975366): irqentry_exit (kernel/entry/common.c:215)
| # 139.38 [+0.01] [  216.393649] [    C0] hardirqs last disabled at (975367): sysvec_apic_timer_interrupt (./arch/x86/include/asm/hardirq.h:78 arch/x86/kernel/apic/apic.c:1052)
| # 139.38 [+0.01] [  216.393651] [    C0] softirqs last  enabled at (208210): handle_softirqs (kernel/softirq.c:469 (discriminator 2) kernel/softirq.c:650 (discriminator 2))
| # 139.39 [+0.01] [  216.393655] [    C0] softirqs last disabled at (208295): irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
# 139.40 [+0.01] [  216.393662] [    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# 139.40 [+0.00] [  216.393665] [    C0] Workqueue: events free_obj_work
# 139.41 [+0.00] [  216.393670] [    C0] RIP: 0010:lock_acquire.part.0 (kernel/locking/lockdep.c:5872)
# 139.41 [+0.00] [  216.393675] [    C0] Code: ff 65 0f c1 05 07 eb 26 04 83 f8 01 4c 8b 14 24 0f 85 30 01 00 00 9c 58 f6 c4 02 0f 85 4d 01 00 00 4d 85 d2 0f 85 16 01 00 00 <48> 8b 44 24 30 65 48 2b 05 39 aa 26 04 0f 85 43 01 00 00 48 83 c4
All code
========
   0:	ff 65 0f             	jmp    *0xf(%rbp)
   3:	c1 05 07 eb 26 04 83 	roll   $0x83,0x426eb07(%rip)        # 0x426eb11
   a:	f8                   	clc
   b:	01 4c 8b 14          	add    %ecx,0x14(%rbx,%rcx,4)
   f:	24 0f                	and    $0xf,%al
  11:	85 30                	test   %esi,(%rax)
  13:	01 00                	add    %eax,(%rax)
  15:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  1c:	85 4d 01             	test   %ecx,0x1(%rbp)
  1f:	00 00                	add    %al,(%rax)
  21:	4d 85 d2             	test   %r10,%r10
  24:	0f 85 16 01 00 00    	jne    0x140
  2a:*	48 8b 44 24 30       	mov    0x30(%rsp),%rax		<-- trapping instruction
  2f:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa70
  36:	04 
  37:	0f 85 43 01 00 00    	jne    0x180
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4

Code starting with the faulting instruction
===========================================
   0:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
   5:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa46
   c:	04 
   d:	0f 85 43 01 00 00    	jne    0x156
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	c4                   	.byte 0xc4
# 139.42 [+0.01] [  216.393677] [    C0] RSP: 0018:ffa0000000007868 EFLAGS: 00000206
# 139.43 [+0.00] [  216.393679] [    C0] RAX: 0000000000000046 RBX: 0000000000000000 RCX: 27ce80de2be1fdb3
# 139.43 [+0.01] [  216.393680] [    C0] RDX: 0000000000000005 RSI: ffffffffa4381eb7 RDI: ffffffffa3e5d0c0
# 139.44 [+0.00] [  216.393681] [    C0] RBP: 0000000000000000 R08: ff11000001a50b30 R09: 0000000000000001
# 139.44 [+0.01] [  216.393682] [    C0] R10: 0000000000000200 R11: 0000000000000000 R12: ffffffffa4978fc0
# 139.45 [+0.01] [  216.393682] [    C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
# 139.45 [+0.00] [  216.393685] [    C0] FS:  0000000000000000(0000) GS:ff11000089ae3000(0000) knlGS:0000000000000000
# 139.46 [+0.01] [  216.393688] [    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
# 139.46 [+0.00] [  216.393689] [    C0] CR2: 00007ffc6b800c90 CR3: 0000000011a72004 CR4: 0000000000771ef0
# 139.47 [+0.00] [  216.393690] [    C0] PKRU: 55555554
# 139.47 [+0.00] [  216.393691] [    C0] Call Trace:
# 139.47 [+0.00] [  216.393694] [    C0]  <IRQ>
# 139.47 [+0.00] [  216.393699] [    C0]  ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 33))
# 139.48 [+0.00] [  216.393701] [    C0]  ? lock_acquire (kernel/locking/lockdep.c:5833)
# 139.48 [+0.00] [  216.393703] [    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
# 139.48 [+0.00] [  216.393707] [    C0]  unwind_next_frame (./include/linux/rcupdate.h:868 ./include/linux/rcupdate.h:1195 arch/x86/kernel/unwind_orc.c:479)
# 139.48 [+0.00] [  216.393709] [    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
# 139.49 [+0.00] [  216.393710] [    C0]  ? rcu_core (kernel/rcu/tree.c:2863)
# 139.49 [+0.00] [  216.393715] [    C0]  ? stack_access_ok (arch/x86/kernel/unwind_orc.c:469)
# 139.49 [+0.00] [  216.393719] [    C0]  ? rcu_do_batch (./include/linux/rcupdate.h:341 (discriminator 1) kernel/rcu/tree.c:2607 (discriminator 1))
# 139.50 [+0.00] [  216.393722] [    C0]  ? __kernel_text_address (kernel/extable.c:78)
# 139.50 [+0.00] [  216.393726] [    C0]  ? write_profile (kernel/stacktrace.c:83)
# 139.50 [+0.00] [  216.393729] [    C0]  arch_stack_walk (arch/x86/kernel/stacktrace.c:24 (discriminator 3))
# 139.51 [+0.00] [  216.393735] [    C0]  ? rcu_core (kernel/rcu/tree.c:2863)
# 139.51 [+0.00] [  216.393739] [    C0]  stack_trace_save (kernel/stacktrace.c:123)
# 139.51 [+0.00] [  216.393742] [    C0]  ? stack_trace_snprint (kernel/stacktrace.c:114)
# 139.51 [+0.00] [  216.393747] [    C0]  kasan_save_stack (mm/kasan/common.c:57)
# 139.52 [+0.00] [  216.393751] [    C0]  ? kasan_save_stack (mm/kasan/common.c:57)
# 139.52 [+0.00] [  216.393753] [    C0]  ? kasan_save_track (mm/kasan/common.c:69 (discriminator 1) mm/kasan/common.c:78 (discriminator 1))
# 139.52 [+0.00] [  216.393754] [    C0]  ? __kasan_save_free_info (mm/kasan/generic.c:590 (discriminator 1))
# 139.53 [+0.00] [  216.393755] [    C0]  ? __kasan_slab_free (mm/kasan/common.c:286)
# 139.53 [+0.00] [  216.393757] [    C0]  ? kfree (mm/slub.c:6642 (discriminator 3) mm/slub.c:6849 (discriminator 3))
# 139.53 [+0.00] [  216.393760] [    C0]  ? slab_free_after_rcu_debug (mm/slub.c:6693 (discriminator 1))
# 139.54 [+0.00] [  216.393762] [    C0]  ? rcu_do_batch (./include/linux/rcupdate.h:341 (discriminator 1) kernel/rcu/tree.c:2607 (discriminator 1))
# 139.54 [+0.00] [  216.393763] [    C0]  ? rcu_core (kernel/rcu/tree.c:2863)
# 139.54 [+0.00] [  216.393784] [    C0]  kasan_save_track (mm/kasan/common.c:69 (discriminator 1) mm/kasan/common.c:78 (discriminator 1))
# 139.54 [+0.00] [  216.393786] [    C0]  __kasan_save_free_info (mm/kasan/generic.c:590 (discriminator 1))
# 139.55 [+0.00] [  216.393788] [    C0]  __kasan_slab_free (mm/kasan/common.c:286)
# 139.55 [+0.00] [  216.393791] [    C0]  kfree (mm/slub.c:6642 (discriminator 3) mm/slub.c:6849 (discriminator 3))
# 139.55 [+0.00] [  216.393793] [    C0]  ? rcu_do_batch (./include/linux/rcupdate.h:331 (discriminator 1) kernel/rcu/tree.c:2599 (discriminator 1))
# 139.56 [+0.00] [  216.393795] [    C0]  ? slab_free_after_rcu_debug (mm/slub.c:6693 (discriminator 1))
# 139.56 [+0.00] [  216.393798] [    C0]  ? slab_free_after_rcu_debug (mm/slub.c:6693 (discriminator 1))
# 139.56 [+0.00] [  216.393800] [    C0]  slab_free_after_rcu_debug (mm/slub.c:6693 (discriminator 1))
# 139.57 [+0.00] [  216.393802] [    C0]  ? rcu_do_batch (kernel/rcu/tree.c:2605)
# 139.57 [+0.00] [  216.393804] [    C0]  rcu_do_batch (./include/linux/rcupdate.h:341 (discriminator 1) kernel/rcu/tree.c:2607 (discriminator 1))
# 139.57 [+0.00] [  216.393809] [    C0]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
# 139.58 [+0.00] [  216.393811] [    C0]  ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 ./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
# 139.58 [+0.00] [  216.393814] [    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
# 139.58 [+0.00] [  216.393816] [    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 (discriminator 3) kernel/locking/spinlock.c:194 (discriminator 3))
# 139.59 [+0.00] [  216.393820] [    C0]  rcu_core (kernel/rcu/tree.c:2863)
# 139.59 [+0.00] [  216.393823] [    C0]  handle_softirqs (kernel/softirq.c:623)
# 139.59 [+0.00] [  216.393826] [    C0]  ? trace_softirq_exit (kernel/softirq.c:580)
# 139.60 [+0.00] [  216.393828] [    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)
# 139.60 [+0.00] [  216.393829] [    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
# 139.60 [+0.00] [  216.393833] [    C0]  irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
# 139.61 [+0.00] [  216.393834] [    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1052 (discriminator 47) arch/x86/kernel/apic/apic.c:1052 (discriminator 47))
# 139.61 [+0.00] [  216.393837] [    C0]  </IRQ>
# 139.61 [+0.00] [  216.393838] [    C0]  <TASK>
# 139.61 [+0.00] [  216.393838] [    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473)
# 139.62 [+0.00] [  216.393840] [    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
# 139.62 [+0.00] [  216.393844] [    C0] RIP: 0010:lock_acquire.part.0 (kernel/locking/lockdep.c:5872)
# 139.62 [+0.00] [  216.393846] [    C0] Code: ff 65 0f c1 05 07 eb 26 04 83 f8 01 4c 8b 14 24 0f 85 30 01 00 00 9c 58 f6 c4 02 0f 85 4d 01 00 00 4d 85 d2 0f 85 16 01 00 00 <48> 8b 44 24 30 65 48 2b 05 39 aa 26 04 0f 85 43 01 00 00 48 83 c4
All code
========
   0:	ff 65 0f             	jmp    *0xf(%rbp)
   3:	c1 05 07 eb 26 04 83 	roll   $0x83,0x426eb07(%rip)        # 0x426eb11
   a:	f8                   	clc
   b:	01 4c 8b 14          	add    %ecx,0x14(%rbx,%rcx,4)
   f:	24 0f                	and    $0xf,%al
  11:	85 30                	test   %esi,(%rax)
  13:	01 00                	add    %eax,(%rax)
  15:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  1c:	85 4d 01             	test   %ecx,0x1(%rbp)
  1f:	00 00                	add    %al,(%rax)
  21:	4d 85 d2             	test   %r10,%r10
  24:	0f 85 16 01 00 00    	jne    0x140
  2a:*	48 8b 44 24 30       	mov    0x30(%rsp),%rax		<-- trapping instruction
  2f:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa70
  36:	04 
  37:	0f 85 43 01 00 00    	jne    0x180
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4

Code starting with the faulting instruction
===========================================
   0:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
   5:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa46
   c:	04 
   d:	0f 85 43 01 00 00    	jne    0x156
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	c4                   	.byte 0xc4
# 139.64 [+0.01] [  216.393847] [    C0] RSP: 0018:ffa00000000a75f8 EFLAGS: 00000206
# 139.64 [+0.00] [  216.393849] [    C0] RAX: 0000000000000046 RBX: 0000000000000000 RCX: a319a26b28a2fc08
# 139.64 [+0.01] [  216.393849] [    C0] RDX: 0000000000000003 RSI: ffffffffa4381eb7 RDI: ffffffffa3e5d0c0
# 139.65 [+0.00] [  216.393850] [    C0] RBP: 0000000000000000 R08: ff11000001a50ae0 R09: 0000000000000001
# 139.65 [+0.00] [  216.393851] [    C0] R10: 0000000000000200 R11: 0000000000000000 R12: ffffffffa4978fc0
# 139.66 [+0.01] [  216.393851] [    C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
# 139.66 [+0.00] [  216.393858] [    C0]  ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 33))
# 139.67 [+0.00] [  216.393860] [    C0]  ? lock_acquire (kernel/locking/lockdep.c:5833)
# 139.67 [+0.00] [  216.393861] [    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
# 139.67 [+0.00] [  216.393864] [    C0]  unwind_next_frame (./include/linux/rcupdate.h:868 ./include/linux/rcupdate.h:1195 arch/x86/kernel/unwind_orc.c:479)
# 139.68 [+0.00] [  216.393865] [    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
# 139.68 [+0.00] [  216.393867] [    C0]  ? __kasan_slab_free (mm/kasan/common.c:286)
# 139.68 [+0.00] [  216.393871] [    C0]  ? stack_access_ok (arch/x86/kernel/unwind_orc.c:469)
# 139.69 [+0.00] [  216.393874] [    C0]  ? __unwind_start (./arch/x86/include/asm/unwind.h:50 arch/x86/kernel/unwind_orc.c:755)
# 139.69 [+0.00] [  216.393876] [    C0]  ? write_profile (kernel/stacktrace.c:83)
# 139.69 [+0.00] [  216.393878] [    C0]  arch_stack_walk (arch/x86/kernel/stacktrace.c:24 (discriminator 3))
# 139.69 [+0.00] [  216.393882] [    C0]  ? __kasan_slab_free (mm/kasan/common.c:286)
# 139.70 [+0.00] [  216.393886] [    C0]  stack_trace_save (kernel/stacktrace.c:123)
# 139.70 [+0.00] [  216.393888] [    C0]  ? stack_trace_snprint (kernel/stacktrace.c:114)
# 139.70 [+0.00] [  216.393890] [    C0]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
# 139.71 [+0.00] [  216.393896] [    C0]  kasan_save_stack (mm/kasan/common.c:57)
# 139.71 [+0.00] [  216.393897] [    C0]  ? kasan_save_stack (mm/kasan/common.c:57)
# 139.71 [+0.00] [  216.393899] [    C0]  ? kasan_save_track (mm/kasan/common.c:69 (discriminator 1) mm/kasan/common.c:78 (discriminator 1))
# 139.72 [+0.00] [  216.393901] [    C0]  ? __kasan_save_free_info (mm/kasan/generic.c:590 (discriminator 1))
# 139.72 [+0.00] [  216.393902] [    C0]  ? __kasan_slab_free (mm/kasan/common.c:286)
# 139.72 [+0.00] [  216.393917] [    C0]  kasan_save_track (mm/kasan/common.c:69 (discriminator 1) mm/kasan/common.c:78 (discriminator 1))
# 139.73 [+0.00] [  216.393919] [    C0]  __kasan_save_free_info (mm/kasan/generic.c:590 (discriminator 1))
# 139.73 [+0.00] [  216.393921] [    C0]  __kasan_slab_free (mm/kasan/common.c:286)
# 139.73 [+0.00] [  216.393923] [    C0]  kmem_cache_free (mm/slub.c:6642 (discriminator 3) mm/slub.c:6752 (discriminator 3))
# 139.73 [+0.00] [  216.393926] [    C0]  ? free_object_list.isra.0 (lib/debugobjects.c:324 (discriminator 11))
# 139.74 [+0.00] [  216.393928] [    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
# 139.74 [+0.00] [  216.393931] [    C0]  ? free_object_list.isra.0 (lib/debugobjects.c:324 (discriminator 11))
# 139.74 [+0.00] [  216.393932] [    C0]  free_object_list.isra.0 (lib/debugobjects.c:324 (discriminator 11))
# 139.75 [+0.00] [  216.393937] [    C0]  free_obj_work (lib/debugobjects.c:494 (discriminator 1))
# 139.75 [+0.00] [  216.393939] [    C0]  ? process_one_work (kernel/workqueue.c:3239 (discriminator 1))
# 139.75 [+0.00] [  216.393941] [    C0]  ? debug_objects_fill_pool.part.0 (lib/debugobjects.c:474)
# 139.76 [+0.00] [  216.393943] [    C0]  ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 33))
# 139.76 [+0.00] [  216.393945] [    C0]  ? lock_acquire (kernel/locking/lockdep.c:5833)
# 139.76 [+0.00] [  216.393947] [    C0]  ? process_one_work (kernel/workqueue.c:3239 (discriminator 1))
# 139.77 [+0.00] [  216.393948] [    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
# 139.77 [+0.00] [  216.393951] [    C0]  process_one_work (kernel/workqueue.c:3268)
# 139.77 [+0.00] [  216.393957] [    C0]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:3165)
# 139.77 [+0.00] [  216.393958] [    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
# 139.78 [+0.00] [  216.393963] [    C0]  ? assign_work (kernel/workqueue.c:1206)
# 139.78 [+0.00] [  216.393966] [    C0]  worker_thread (kernel/workqueue.c:3340 (discriminator 2) kernel/workqueue.c:3427 (discriminator 2))
# 139.78 [+0.00] [  216.393970] [    C0]  ? process_one_work (kernel/workqueue.c:3373)
# 139.79 [+0.00] [  216.393971] [    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))
# 139.79 [+0.00] [  216.393974] [    C0]  ? process_one_work (kernel/workqueue.c:3373)
# 139.79 [+0.00] [  216.393976] [    C0]  kthread (kernel/kthread.c:463)
# 139.80 [+0.00] [  216.393979] [    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
# 139.80 [+0.00] [  216.393980] [    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
# 139.80 [+0.00] [  216.393983] [    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
# 139.80 [+0.00] [  216.393985] [    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
# 139.81 [+0.00] [  216.393987] [    C0]  ret_from_fork (arch/x86/kernel/process.c:164)
# 139.81 [+0.00] [  216.393989] [    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
# 139.81 [+0.00] [  216.393991] [    C0]  ret_from_fork_asm (arch/x86/entry/entry_64.S:255)
| # 139.82 [+0.00] [  221.410754] [    C0] rcu: INFO: rcu_preempt self-detected stall on CPU
| # 139.82 [+0.00] [  221.411111] [    C0] rcu: 0-....: (23284 ticks this GP) idle=8674/1/0x4000000000000000 softirq=116876/116876 fqs=6361
| # 139.83 [+0.01] [  221.412042] [    C0] rcu: (t=26000 jiffies g=96237 q=1661 ncpus=4)
| # 139.84 [+0.01] [  221.412285] [    C0] Tainted: [L]=SOFTLOCKUP
# 139.84 [+0.00] [  221.412286] [    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# 139.85 [+0.00] [  221.412289] [    C0] Workqueue: events free_obj_work
# 139.85 [+0.00] [  221.412298] [    C0] RIP: 0010:lock_acquire.part.0 (kernel/locking/lockdep.c:5872)
# 139.85 [+0.00] [  221.412304] [    C0] Code: ff 65 0f c1 05 07 eb 26 04 83 f8 01 4c 8b 14 24 0f 85 30 01 00 00 9c 58 f6 c4 02 0f 85 4d 01 00 00 4d 85 d2 0f 85 16 01 00 00 <48> 8b 44 24 30 65 48 2b 05 39 aa 26 04 0f 85 43 01 00 00 48 83 c4
All code
========
   0:	ff 65 0f             	jmp    *0xf(%rbp)
   3:	c1 05 07 eb 26 04 83 	roll   $0x83,0x426eb07(%rip)        # 0x426eb11
   a:	f8                   	clc
   b:	01 4c 8b 14          	add    %ecx,0x14(%rbx,%rcx,4)
   f:	24 0f                	and    $0xf,%al
  11:	85 30                	test   %esi,(%rax)
  13:	01 00                	add    %eax,(%rax)
  15:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  1c:	85 4d 01             	test   %ecx,0x1(%rbp)
  1f:	00 00                	add    %al,(%rax)
  21:	4d 85 d2             	test   %r10,%r10
  24:	0f 85 16 01 00 00    	jne    0x140
  2a:*	48 8b 44 24 30       	mov    0x30(%rsp),%rax		<-- trapping instruction
  2f:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa70
  36:	04 
  37:	0f 85 43 01 00 00    	jne    0x180
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4

Code starting with the faulting instruction
===========================================
   0:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
   5:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa46
   c:	04 
   d:	0f 85 43 01 00 00    	jne    0x156
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	c4                   	.byte 0xc4
# 139.86 [+0.01] [  221.412306] [    C0] RSP: 0018:ffa0000000007888 EFLAGS: 00000206
# 139.87 [+0.00] [  221.412308] [    C0] RAX: 0000000000000046 RBX: 0000000000000000 RCX: 27ce80de2be1fdb3
# 139.87 [+0.00] [  221.412310] [    C0] RDX: 0000000000000005 RSI: ffffffffa4381eb7 RDI: ffffffffa3e5d0c0
# 139.88 [+0.00] [  221.412311] [    C0] RBP: 0000000000000000 R08: ff11000001a50b30 R09: 0000000000000001
# 139.88 [+0.01] [  221.412311] [    C0] R10: 0000000000000200 R11: 0000000000000000 R12: ffffffffa4978fc0
# 139.89 [+0.00] [  221.412312] [    C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
# 139.89 [+0.01] [  221.412315] [    C0] FS:  0000000000000000(0000) GS:ff11000089ae3000(0000) knlGS:0000000000000000
# 139.90 [+0.01] [  221.412318] [    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
# 139.90 [+0.00] [  221.412319] [    C0] CR2: 00007ffc6b800c90 CR3: 0000000011a72004 CR4: 0000000000771ef0
# 139.91 [+0.00] [  221.412320] [    C0] PKRU: 55555554
# 139.91 [+0.00] [  221.412321] [    C0] Call Trace:
# 139.91 [+0.00] [  221.412322] [    C0]  <IRQ>
# 139.91 [+0.00] [  221.412326] [    C0]  ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 33))
# 139.92 [+0.00] [  221.412328] [    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)
# 139.92 [+0.00] [  221.412330] [    C0]  ? lock_acquire (kernel/locking/lockdep.c:5833)
# 139.92 [+0.00] [  221.412332] [    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
# 139.92 [+0.00] [  221.412336] [    C0]  unwind_next_frame (./include/linux/rcupdate.h:868 ./include/linux/rcupdate.h:1195 arch/x86/kernel/unwind_orc.c:479)
# 139.93 [+0.00] [  221.412337] [    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
# 139.93 [+0.00] [  221.412338] [    C0]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4032 (discriminator 2) kernel/rcu/tree.c:4024 (discriminator 2))
# 139.93 [+0.00] [  221.412341] [    C0]  ? __unwind_start (arch/x86/kernel/unwind_orc.c:712)
# 139.94 [+0.00] [  221.412344] [    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
# 139.94 [+0.00] [  221.412346] [    C0]  ? stack_access_ok (arch/x86/kernel/unwind_orc.c:469)
# 139.94 [+0.00] [  221.412347] [    C0]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4032 (discriminator 2) kernel/rcu/tree.c:4024 (discriminator 2))
# 139.95 [+0.00] [  221.412349] [    C0]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
# 139.95 [+0.00] [  221.412353] [    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
# 139.95 [+0.00] [  221.412355] [    C0]  ? get_stack_info_noinstr (arch/x86/kernel/dumpstack_64.c:103 (discriminator 7) arch/x86/kernel/dumpstack_64.c:179 (discriminator 7))
# 139.96 [+0.00] [  221.412358] [    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
# 139.96 [+0.00] [  221.412362] [    C0]  __unwind_start (./arch/x86/include/asm/unwind.h:50 arch/x86/kernel/unwind_orc.c:755)
# 139.96 [+0.00] [  221.412364] [    C0]  ? write_profile (kernel/stacktrace.c:83)
# 139.97 [+0.00] [  221.412367] [    C0]  arch_stack_walk (arch/x86/kernel/stacktrace.c:24 (discriminator 3))
# 139.97 [+0.00] [  221.412373] [    C0]  ? __unwind_start (arch/x86/kernel/unwind_orc.c:712)
# 139.97 [+0.00] [  221.412376] [    C0]  stack_trace_save (kernel/stacktrace.c:123)
# 139.98 [+0.00] [  221.412379] [    C0]  ? stack_trace_snprint (kernel/stacktrace.c:114)
# 139.98 [+0.00] [  221.412382] [    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)
# 139.98 [+0.00] [  221.412384] [    C0]  kasan_save_stack (mm/kasan/common.c:57)
# 139.98 [+0.00] [  221.412403] [    C0]  kasan_save_track (mm/kasan/common.c:69 (discriminator 1) mm/kasan/common.c:78 (discriminator 1))
# 139.99 [+0.00] [  221.412405] [    C0]  __kasan_save_free_info (mm/kasan/generic.c:590 (discriminator 1))
# 139.99 [+0.00] [  221.412407] [    C0]  __kasan_slab_free (mm/kasan/common.c:286)
# 139.99 [+0.00] [  221.412409] [    C0]  slab_free_after_rcu_debug (mm/slub.c:6700 (discriminator 2))
# 140.00 [+0.00] [  221.412413] [    C0]  ? rcu_do_batch (kernel/rcu/tree.c:2605)
# 140.00 [+0.00] [  221.412415] [    C0]  rcu_do_batch (./include/linux/rcupdate.h:341 (discriminator 1) kernel/rcu/tree.c:2607 (discriminator 1))
# 140.00 [+0.00] [  221.412420] [    C0]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
# 140.01 [+0.00] [  221.412421] [    C0]  ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 ./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
# 140.01 [+0.00] [  221.412425] [    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
# 140.01 [+0.00] [  221.412428] [    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 (discriminator 3) kernel/locking/spinlock.c:194 (discriminator 3))
# 140.02 [+0.00] [  221.412431] [    C0]  rcu_core (kernel/rcu/tree.c:2863)
# 140.02 [+0.00] [  221.412434] [    C0]  handle_softirqs (kernel/softirq.c:623)
# 140.02 [+0.00] [  221.412438] [    C0]  ? trace_softirq_exit (kernel/softirq.c:580)
# 140.03 [+0.00] [  221.412440] [    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)
# 140.03 [+0.00] [  221.412441] [    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
# 140.03 [+0.00] [  221.412444] [    C0]  irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
# 140.03 [+0.00] [  221.412445] [    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1052 (discriminator 47) arch/x86/kernel/apic/apic.c:1052 (discriminator 47))
# 140.04 [+0.00] [  221.412448] [    C0]  </IRQ>
# 140.04 [+0.00] [  221.412448] [    C0]  <TASK>
# 140.04 [+0.00] [  221.412449] [    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473)
# 140.05 [+0.00] [  221.412451] [    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
# 140.05 [+0.00] [  221.412454] [    C0] RIP: 0010:lock_acquire.part.0 (kernel/locking/lockdep.c:5872)
# 140.05 [+0.00] [  221.412456] [    C0] Code: ff 65 0f c1 05 07 eb 26 04 83 f8 01 4c 8b 14 24 0f 85 30 01 00 00 9c 58 f6 c4 02 0f 85 4d 01 00 00 4d 85 d2 0f 85 16 01 00 00 <48> 8b 44 24 30 65 48 2b 05 39 aa 26 04 0f 85 43 01 00 00 48 83 c4
All code
========
   0:	ff 65 0f             	jmp    *0xf(%rbp)
   3:	c1 05 07 eb 26 04 83 	roll   $0x83,0x426eb07(%rip)        # 0x426eb11
   a:	f8                   	clc
   b:	01 4c 8b 14          	add    %ecx,0x14(%rbx,%rcx,4)
   f:	24 0f                	and    $0xf,%al
  11:	85 30                	test   %esi,(%rax)
  13:	01 00                	add    %eax,(%rax)
  15:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  1c:	85 4d 01             	test   %ecx,0x1(%rbp)
  1f:	00 00                	add    %al,(%rax)
  21:	4d 85 d2             	test   %r10,%r10
  24:	0f 85 16 01 00 00    	jne    0x140
  2a:*	48 8b 44 24 30       	mov    0x30(%rsp),%rax		<-- trapping instruction
  2f:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa70
  36:	04 
  37:	0f 85 43 01 00 00    	jne    0x180
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4

Code starting with the faulting instruction
===========================================
   0:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
   5:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa46
   c:	04 
   d:	0f 85 43 01 00 00    	jne    0x156
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	c4                   	.byte 0xc4
# 140.06 [+0.01] [  221.412457] [    C0] RSP: 0018:ffa00000000a75f8 EFLAGS: 00000206
# 140.07 [+0.00] [  221.412458] [    C0] RAX: 0000000000000046 RBX: 0000000000000000 RCX: a319a26b28a2fc08
# 140.07 [+0.00] [  221.412459] [    C0] RDX: 0000000000000003 RSI: ffffffffa4381eb7 RDI: ffffffffa3e5d0c0
# 140.08 [+0.00] [  221.412460] [    C0] RBP: 0000000000000000 R08: ff11000001a50ae0 R09: 0000000000000001
# 140.08 [+0.01] [  221.412460] [    C0] R10: 0000000000000200 R11: 0000000000000000 R12: ffffffffa4978fc0
# 140.09 [+0.00] [  221.412461] [    C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
# 140.09 [+0.00] [  221.412467] [    C0]  ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 33))
# 140.10 [+0.00] [  221.412469] [    C0]  ? lock_acquire (kernel/locking/lockdep.c:5833)
# 140.10 [+0.00] [  221.412471] [    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
# 140.10 [+0.00] [  221.412473] [    C0]  unwind_next_frame (./include/linux/rcupdate.h:868 ./include/linux/rcupdate.h:1195 arch/x86/kernel/unwind_orc.c:479)
# 140.10 [+0.00] [  221.412475] [    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
# 140.11 [+0.00] [  221.412476] [    C0]  ? __kasan_slab_free (mm/kasan/common.c:286)
# 140.11 [+0.00] [  221.412480] [    C0]  ? stack_access_ok (arch/x86/kernel/unwind_orc.c:469)
# 140.11 [+0.00] [  221.412483] [    C0]  ? __unwind_start (./arch/x86/include/asm/unwind.h:50 arch/x86/kernel/unwind_orc.c:755)
# 140.12 [+0.00] [  221.412485] [    C0]  ? write_profile (kernel/stacktrace.c:83)
# 140.12 [+0.00] [  221.412487] [    C0]  arch_stack_walk (arch/x86/kernel/stacktrace.c:24 (discriminator 3))
# 140.12 [+0.00] [  221.412492] [    C0]  ? __kasan_slab_free (mm/kasan/common.c:286)
# 140.12 [+0.00] [  221.412495] [    C0]  stack_trace_save (kernel/stacktrace.c:123)
# 140.13 [+0.00] [  221.412497] [    C0]  ? stack_trace_snprint (kernel/stacktrace.c:114)
# 140.13 [+0.00] [  221.412499] [    C0]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
# 140.13 [+0.00] [  221.412504] [    C0]  kasan_save_stack (mm/kasan/common.c:57)
# 140.14 [+0.00] [  221.412505] [    C0]  ? kasan_save_stack (mm/kasan/common.c:57)
# 140.14 [+0.00] [  221.412507] [    C0]  ? kasan_save_track (mm/kasan/common.c:69 (discriminator 1) mm/kasan/common.c:78 (discriminator 1))
# 140.14 [+0.00] [  221.412508] [    C0]  ? __kasan_save_free_info (mm/kasan/generic.c:590 (discriminator 1))
# 140.14 [+0.00] [  221.412509] [    C0]  ? __kasan_slab_free (mm/kasan/common.c:286)
# 140.15 [+0.00] [  221.412525] [    C0]  kasan_save_track (mm/kasan/common.c:69 (discriminator 1) mm/kasan/common.c:78 (discriminator 1))
# 140.15 [+0.00] [  221.412527] [    C0]  __kasan_save_free_info (mm/kasan/generic.c:590 (discriminator 1))
# 140.15 [+0.00] [  221.412528] [    C0]  __kasan_slab_free (mm/kasan/common.c:286)
# 140.16 [+0.00] [  221.412531] [    C0]  kmem_cache_free (mm/slub.c:6642 (discriminator 3) mm/slub.c:6752 (discriminator 3))
# 140.16 [+0.00] [  221.412533] [    C0]  ? free_object_list.isra.0 (lib/debugobjects.c:324 (discriminator 11))
# 140.16 [+0.00] [  221.412535] [    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
# 140.17 [+0.00] [  221.412538] [    C0]  ? free_object_list.isra.0 (lib/debugobjects.c:324 (discriminator 11))
# 140.17 [+0.00] [  221.412540] [    C0]  free_object_list.isra.0 (lib/debugobjects.c:324 (discriminator 11))
# 140.17 [+0.00] [  221.412543] [    C0]  free_obj_work (lib/debugobjects.c:494 (discriminator 1))
# 140.18 [+0.00] [  221.412545] [    C0]  ? process_one_work (kernel/workqueue.c:3239 (discriminator 1))
# 140.18 [+0.00] [  221.412548] [    C0]  ? debug_objects_fill_pool.part.0 (lib/debugobjects.c:474)
# 140.18 [+0.00] [  221.412550] [    C0]  ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 33))
# 140.19 [+0.00] [  221.412552] [    C0]  ? lock_acquire (kernel/locking/lockdep.c:5833)
# 140.19 [+0.00] [  221.412554] [    C0]  ? process_one_work (kernel/workqueue.c:3239 (discriminator 1))
# 140.19 [+0.00] [  221.412555] [    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
# 140.19 [+0.00] [  221.412558] [    C0]  process_one_work (kernel/workqueue.c:3268)
# 140.20 [+0.00] [  221.412563] [    C0]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:3165)
# 140.20 [+0.00] [  221.412565] [    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
# 140.20 [+0.00] [  221.412570] [    C0]  ? assign_work (kernel/workqueue.c:1206)
# 140.21 [+0.00] [  221.412573] [    C0]  worker_thread (kernel/workqueue.c:3340 (discriminator 2) kernel/workqueue.c:3427 (discriminator 2))
# 140.21 [+0.00] [  221.412576] [    C0]  ? process_one_work (kernel/workqueue.c:3373)
# 140.21 [+0.00] [  221.412578] [    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))
# 140.22 [+0.00] [  221.412581] [    C0]  ? process_one_work (kernel/workqueue.c:3373)
# 140.22 [+0.00] [  221.412583] [    C0]  kthread (kernel/kthread.c:463)
# 140.22 [+0.00] [  221.412585] [    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
# 140.22 [+0.00] [  221.412587] [    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
# 140.23 [+0.00] [  221.412590] [    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
# 140.23 [+0.00] [  221.412592] [    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
# 140.23 [+0.00] [  221.412594] [    C0]  ret_from_fork (arch/x86/kernel/process.c:164)
# 140.24 [+0.00] [  221.412596] [    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
# 140.24 [+0.00] [  221.412597] [    C0]  ret_from_fork_asm (arch/x86/entry/entry_64.S:255)
| [  216.393640][    C0] hardirqs last  enabled at (975366): irqentry_exit (kernel/entry/common.c:215)
| [  216.393649][    C0] hardirqs last disabled at (975367): sysvec_apic_timer_interrupt (./arch/x86/include/asm/hardirq.h:78 arch/x86/kernel/apic/apic.c:1052)
| [  216.393651][    C0] softirqs last  enabled at (208210): handle_softirqs (kernel/softirq.c:469 (discriminator 2) kernel/softirq.c:650 (discriminator 2))
| [  216.393655][    C0] softirqs last disabled at (208295): irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
[  216.393662][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  216.393665][    C0] Workqueue: events free_obj_work
[  216.393670][    C0] RIP: 0010:lock_acquire.part.0 (kernel/locking/lockdep.c:5872)
[  216.393675][    C0] Code: ff 65 0f c1 05 07 eb 26 04 83 f8 01 4c 8b 14 24 0f 85 30 01 00 00 9c 58 f6 c4 02 0f 85 4d 01 00 00 4d 85 d2 0f 85 16 01 00 00 <48> 8b 44 24 30 65 48 2b 05 39 aa 26 04 0f 85 43 01 00 00 48 83 c4
All code
========
   0:	ff 65 0f             	jmp    *0xf(%rbp)
   3:	c1 05 07 eb 26 04 83 	roll   $0x83,0x426eb07(%rip)        # 0x426eb11
   a:	f8                   	clc
   b:	01 4c 8b 14          	add    %ecx,0x14(%rbx,%rcx,4)
   f:	24 0f                	and    $0xf,%al
  11:	85 30                	test   %esi,(%rax)
  13:	01 00                	add    %eax,(%rax)
  15:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  1c:	85 4d 01             	test   %ecx,0x1(%rbp)
  1f:	00 00                	add    %al,(%rax)
  21:	4d 85 d2             	test   %r10,%r10
  24:	0f 85 16 01 00 00    	jne    0x140
  2a:*	48 8b 44 24 30       	mov    0x30(%rsp),%rax		<-- trapping instruction
  2f:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa70
  36:	04 
  37:	0f 85 43 01 00 00    	jne    0x180
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4

Code starting with the faulting instruction
===========================================
   0:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
   5:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa46
   c:	04 
   d:	0f 85 43 01 00 00    	jne    0x156
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	c4                   	.byte 0xc4
[  216.393677][    C0] RSP: 0018:ffa0000000007868 EFLAGS: 00000206
[  216.393679][    C0] RAX: 0000000000000046 RBX: 0000000000000000 RCX: 27ce80de2be1fdb3
[  216.393680][    C0] RDX: 0000000000000005 RSI: ffffffffa4381eb7 RDI: ffffffffa3e5d0c0
[  216.393681][    C0] RBP: 0000000000000000 R08: ff11000001a50b30 R09: 0000000000000001
[  216.393682][    C0] R10: 0000000000000200 R11: 0000000000000000 R12: ffffffffa4978fc0
[  216.393682][    C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
[  216.393685][    C0] FS:  0000000000000000(0000) GS:ff11000089ae3000(0000) knlGS:0000000000000000
[  216.393688][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  216.393689][    C0] CR2: 00007ffc6b800c90 CR3: 0000000011a72004 CR4: 0000000000771ef0
[  216.393690][    C0] PKRU: 55555554
[  216.393691][    C0] Call Trace:
[  216.393694][    C0]  <IRQ>
[  216.393699][    C0]  ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 33))
[  216.393701][    C0]  ? lock_acquire (kernel/locking/lockdep.c:5833)
[  216.393703][    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
[  216.393707][    C0]  unwind_next_frame (./include/linux/rcupdate.h:868 ./include/linux/rcupdate.h:1195 arch/x86/kernel/unwind_orc.c:479)
[  216.393709][    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
[  216.393710][    C0]  ? rcu_core (kernel/rcu/tree.c:2863)
[  216.393715][    C0]  ? stack_access_ok (arch/x86/kernel/unwind_orc.c:469)
[  216.393719][    C0]  ? rcu_do_batch (./include/linux/rcupdate.h:341 (discriminator 1) kernel/rcu/tree.c:2607 (discriminator 1))
[  216.393722][    C0]  ? __kernel_text_address (kernel/extable.c:78)
[  216.393726][    C0]  ? write_profile (kernel/stacktrace.c:83)
[  216.393729][    C0]  arch_stack_walk (arch/x86/kernel/stacktrace.c:24 (discriminator 3))
[  216.393735][    C0]  ? rcu_core (kernel/rcu/tree.c:2863)
[  216.393739][    C0]  stack_trace_save (kernel/stacktrace.c:123)
[  216.393742][    C0]  ? stack_trace_snprint (kernel/stacktrace.c:114)
[  216.393747][    C0]  kasan_save_stack (mm/kasan/common.c:57)
[  216.393751][    C0]  ? kasan_save_stack (mm/kasan/common.c:57)
[  216.393753][    C0]  ? kasan_save_track (mm/kasan/common.c:69 (discriminator 1) mm/kasan/common.c:78 (discriminator 1))
[  216.393754][    C0]  ? __kasan_save_free_info (mm/kasan/generic.c:590 (discriminator 1))
[  216.393755][    C0]  ? __kasan_slab_free (mm/kasan/common.c:286)
[  216.393757][    C0]  ? kfree (mm/slub.c:6642 (discriminator 3) mm/slub.c:6849 (discriminator 3))
[  216.393760][    C0]  ? slab_free_after_rcu_debug (mm/slub.c:6693 (discriminator 1))
[  216.393762][    C0]  ? rcu_do_batch (./include/linux/rcupdate.h:341 (discriminator 1) kernel/rcu/tree.c:2607 (discriminator 1))
[  216.393763][    C0]  ? rcu_core (kernel/rcu/tree.c:2863)
[  216.393784][    C0]  kasan_save_track (mm/kasan/common.c:69 (discriminator 1) mm/kasan/common.c:78 (discriminator 1))
[  216.393786][    C0]  __kasan_save_free_info (mm/kasan/generic.c:590 (discriminator 1))
[  216.393788][    C0]  __kasan_slab_free (mm/kasan/common.c:286)
[  216.393791][    C0]  kfree (mm/slub.c:6642 (discriminator 3) mm/slub.c:6849 (discriminator 3))
[  216.393793][    C0]  ? rcu_do_batch (./include/linux/rcupdate.h:331 (discriminator 1) kernel/rcu/tree.c:2599 (discriminator 1))
[  216.393795][    C0]  ? slab_free_after_rcu_debug (mm/slub.c:6693 (discriminator 1))
[  216.393798][    C0]  ? slab_free_after_rcu_debug (mm/slub.c:6693 (discriminator 1))
[  216.393800][    C0]  slab_free_after_rcu_debug (mm/slub.c:6693 (discriminator 1))
[  216.393802][    C0]  ? rcu_do_batch (kernel/rcu/tree.c:2605)
[  216.393804][    C0]  rcu_do_batch (./include/linux/rcupdate.h:341 (discriminator 1) kernel/rcu/tree.c:2607 (discriminator 1))
[  216.393809][    C0]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
[  216.393811][    C0]  ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 ./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[  216.393814][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
[  216.393816][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 (discriminator 3) kernel/locking/spinlock.c:194 (discriminator 3))
[  216.393820][    C0]  rcu_core (kernel/rcu/tree.c:2863)
[  216.393823][    C0]  handle_softirqs (kernel/softirq.c:623)
[  216.393826][    C0]  ? trace_softirq_exit (kernel/softirq.c:580)
[  216.393828][    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)
[  216.393829][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  216.393833][    C0]  irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
[  216.393834][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1052 (discriminator 47) arch/x86/kernel/apic/apic.c:1052 (discriminator 47))
[  216.393837][    C0]  </IRQ>
[  216.393838][    C0]  <TASK>
[  216.393838][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473)
[  216.393840][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  216.393844][    C0] RIP: 0010:lock_acquire.part.0 (kernel/locking/lockdep.c:5872)
[  216.393846][    C0] Code: ff 65 0f c1 05 07 eb 26 04 83 f8 01 4c 8b 14 24 0f 85 30 01 00 00 9c 58 f6 c4 02 0f 85 4d 01 00 00 4d 85 d2 0f 85 16 01 00 00 <48> 8b 44 24 30 65 48 2b 05 39 aa 26 04 0f 85 43 01 00 00 48 83 c4
All code
========
   0:	ff 65 0f             	jmp    *0xf(%rbp)
   3:	c1 05 07 eb 26 04 83 	roll   $0x83,0x426eb07(%rip)        # 0x426eb11
   a:	f8                   	clc
   b:	01 4c 8b 14          	add    %ecx,0x14(%rbx,%rcx,4)
   f:	24 0f                	and    $0xf,%al
  11:	85 30                	test   %esi,(%rax)
  13:	01 00                	add    %eax,(%rax)
  15:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  1c:	85 4d 01             	test   %ecx,0x1(%rbp)
  1f:	00 00                	add    %al,(%rax)
  21:	4d 85 d2             	test   %r10,%r10
  24:	0f 85 16 01 00 00    	jne    0x140
  2a:*	48 8b 44 24 30       	mov    0x30(%rsp),%rax		<-- trapping instruction
  2f:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa70
  36:	04 
  37:	0f 85 43 01 00 00    	jne    0x180
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4

Code starting with the faulting instruction
===========================================
   0:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
   5:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa46
   c:	04 
   d:	0f 85 43 01 00 00    	jne    0x156
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	c4                   	.byte 0xc4
[  216.393847][    C0] RSP: 0018:ffa00000000a75f8 EFLAGS: 00000206
[  216.393849][    C0] RAX: 0000000000000046 RBX: 0000000000000000 RCX: a319a26b28a2fc08
[  216.393849][    C0] RDX: 0000000000000003 RSI: ffffffffa4381eb7 RDI: ffffffffa3e5d0c0
[  216.393850][    C0] RBP: 0000000000000000 R08: ff11000001a50ae0 R09: 0000000000000001
[  216.393851][    C0] R10: 0000000000000200 R11: 0000000000000000 R12: ffffffffa4978fc0
[  216.393851][    C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
[  216.393858][    C0]  ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 33))
[  216.393860][    C0]  ? lock_acquire (kernel/locking/lockdep.c:5833)
[  216.393861][    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
[  216.393864][    C0]  unwind_next_frame (./include/linux/rcupdate.h:868 ./include/linux/rcupdate.h:1195 arch/x86/kernel/unwind_orc.c:479)
[  216.393865][    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
[  216.393867][    C0]  ? __kasan_slab_free (mm/kasan/common.c:286)
[  216.393871][    C0]  ? stack_access_ok (arch/x86/kernel/unwind_orc.c:469)
[  216.393874][    C0]  ? __unwind_start (./arch/x86/include/asm/unwind.h:50 arch/x86/kernel/unwind_orc.c:755)
[  216.393876][    C0]  ? write_profile (kernel/stacktrace.c:83)
[  216.393878][    C0]  arch_stack_walk (arch/x86/kernel/stacktrace.c:24 (discriminator 3))
[  216.393882][    C0]  ? __kasan_slab_free (mm/kasan/common.c:286)
[  216.393886][    C0]  stack_trace_save (kernel/stacktrace.c:123)
[  216.393888][    C0]  ? stack_trace_snprint (kernel/stacktrace.c:114)
[  216.393890][    C0]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[  216.393896][    C0]  kasan_save_stack (mm/kasan/common.c:57)
[  216.393897][    C0]  ? kasan_save_stack (mm/kasan/common.c:57)
[  216.393899][    C0]  ? kasan_save_track (mm/kasan/common.c:69 (discriminator 1) mm/kasan/common.c:78 (discriminator 1))
[  216.393901][    C0]  ? __kasan_save_free_info (mm/kasan/generic.c:590 (discriminator 1))
[  216.393902][    C0]  ? __kasan_slab_free (mm/kasan/common.c:286)
[  216.393917][    C0]  kasan_save_track (mm/kasan/common.c:69 (discriminator 1) mm/kasan/common.c:78 (discriminator 1))
[  216.393919][    C0]  __kasan_save_free_info (mm/kasan/generic.c:590 (discriminator 1))
[  216.393921][    C0]  __kasan_slab_free (mm/kasan/common.c:286)
[  216.393923][    C0]  kmem_cache_free (mm/slub.c:6642 (discriminator 3) mm/slub.c:6752 (discriminator 3))
[  216.393926][    C0]  ? free_object_list.isra.0 (lib/debugobjects.c:324 (discriminator 11))
[  216.393928][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[  216.393931][    C0]  ? free_object_list.isra.0 (lib/debugobjects.c:324 (discriminator 11))
[  216.393932][    C0]  free_object_list.isra.0 (lib/debugobjects.c:324 (discriminator 11))
[  216.393937][    C0]  free_obj_work (lib/debugobjects.c:494 (discriminator 1))
[  216.393939][    C0]  ? process_one_work (kernel/workqueue.c:3239 (discriminator 1))
[  216.393941][    C0]  ? debug_objects_fill_pool.part.0 (lib/debugobjects.c:474)
[  216.393943][    C0]  ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 33))
[  216.393945][    C0]  ? lock_acquire (kernel/locking/lockdep.c:5833)
[  216.393947][    C0]  ? process_one_work (kernel/workqueue.c:3239 (discriminator 1))
[  216.393948][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  216.393951][    C0]  process_one_work (kernel/workqueue.c:3268)
[  216.393957][    C0]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:3165)
[  216.393958][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  216.393963][    C0]  ? assign_work (kernel/workqueue.c:1206)
[  216.393966][    C0]  worker_thread (kernel/workqueue.c:3340 (discriminator 2) kernel/workqueue.c:3427 (discriminator 2))
[  216.393970][    C0]  ? process_one_work (kernel/workqueue.c:3373)
[  216.393971][    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))
[  216.393974][    C0]  ? process_one_work (kernel/workqueue.c:3373)
[  216.393976][    C0]  kthread (kernel/kthread.c:463)
[  216.393979][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  216.393980][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  216.393983][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  216.393985][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  216.393987][    C0]  ret_from_fork (arch/x86/kernel/process.c:164)
[  216.393989][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  216.393991][    C0]  ret_from_fork_asm (arch/x86/entry/entry_64.S:255)
| [  221.410754][    C0] rcu: INFO: rcu_preempt self-detected stall on CPU
| [  221.411111][    C0] rcu: 0-....: (23284 ticks this GP) idle=8674/1/0x4000000000000000 softirq=116876/116876 fqs=6361
| [  221.412042][    C0] rcu: (t=26000 jiffies g=96237 q=1661 ncpus=4)
| [  221.412285][    C0] Tainted: [L]=SOFTLOCKUP
[  221.412286][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  221.412289][    C0] Workqueue: events free_obj_work
[  221.412298][    C0] RIP: 0010:lock_acquire.part.0 (kernel/locking/lockdep.c:5872)
[  221.412304][    C0] Code: ff 65 0f c1 05 07 eb 26 04 83 f8 01 4c 8b 14 24 0f 85 30 01 00 00 9c 58 f6 c4 02 0f 85 4d 01 00 00 4d 85 d2 0f 85 16 01 00 00 <48> 8b 44 24 30 65 48 2b 05 39 aa 26 04 0f 85 43 01 00 00 48 83 c4
All code
========
   0:	ff 65 0f             	jmp    *0xf(%rbp)
   3:	c1 05 07 eb 26 04 83 	roll   $0x83,0x426eb07(%rip)        # 0x426eb11
   a:	f8                   	clc
   b:	01 4c 8b 14          	add    %ecx,0x14(%rbx,%rcx,4)
   f:	24 0f                	and    $0xf,%al
  11:	85 30                	test   %esi,(%rax)
  13:	01 00                	add    %eax,(%rax)
  15:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  1c:	85 4d 01             	test   %ecx,0x1(%rbp)
  1f:	00 00                	add    %al,(%rax)
  21:	4d 85 d2             	test   %r10,%r10
  24:	0f 85 16 01 00 00    	jne    0x140
  2a:*	48 8b 44 24 30       	mov    0x30(%rsp),%rax		<-- trapping instruction
  2f:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa70
  36:	04 
  37:	0f 85 43 01 00 00    	jne    0x180
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4

Code starting with the faulting instruction
===========================================
   0:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
   5:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa46
   c:	04 
   d:	0f 85 43 01 00 00    	jne    0x156
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	c4                   	.byte 0xc4
[  221.412306][    C0] RSP: 0018:ffa0000000007888 EFLAGS: 00000206
[  221.412308][    C0] RAX: 0000000000000046 RBX: 0000000000000000 RCX: 27ce80de2be1fdb3
[  221.412310][    C0] RDX: 0000000000000005 RSI: ffffffffa4381eb7 RDI: ffffffffa3e5d0c0
[  221.412311][    C0] RBP: 0000000000000000 R08: ff11000001a50b30 R09: 0000000000000001
[  221.412311][    C0] R10: 0000000000000200 R11: 0000000000000000 R12: ffffffffa4978fc0
[  221.412312][    C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
[  221.412315][    C0] FS:  0000000000000000(0000) GS:ff11000089ae3000(0000) knlGS:0000000000000000
[  221.412318][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  221.412319][    C0] CR2: 00007ffc6b800c90 CR3: 0000000011a72004 CR4: 0000000000771ef0
[  221.412320][    C0] PKRU: 55555554
[  221.412321][    C0] Call Trace:
[  221.412322][    C0]  <IRQ>
[  221.412326][    C0]  ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 33))
[  221.412328][    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)
[  221.412330][    C0]  ? lock_acquire (kernel/locking/lockdep.c:5833)
[  221.412332][    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
[  221.412336][    C0]  unwind_next_frame (./include/linux/rcupdate.h:868 ./include/linux/rcupdate.h:1195 arch/x86/kernel/unwind_orc.c:479)
[  221.412337][    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
[  221.412338][    C0]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4032 (discriminator 2) kernel/rcu/tree.c:4024 (discriminator 2))
[  221.412341][    C0]  ? __unwind_start (arch/x86/kernel/unwind_orc.c:712)
[  221.412344][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5237 (discriminator 1))
[  221.412346][    C0]  ? stack_access_ok (arch/x86/kernel/unwind_orc.c:469)
[  221.412347][    C0]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4032 (discriminator 2) kernel/rcu/tree.c:4024 (discriminator 2))
[  221.412349][    C0]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 (discriminator 1) kernel/rcu/update.c:380 (discriminator 1))
[  221.412353][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  221.412355][    C0]  ? get_stack_info_noinstr (arch/x86/kernel/dumpstack_64.c:103 (discriminator 7) arch/x86/kernel/dumpstack_64.c:179 (discriminator 7))
[  221.412358][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[  221.412362][    C0]  __unwind_start (./arch/x86/include/asm/unwind.h:50 arch/x86/kernel/unwind_orc.c:755)
[  221.412364][    C0]  ? write_profile (kernel/stacktrace.c:83)
[  221.412367][    C0]  arch_stack_walk (arch/x86/kernel/stacktrace.c:24 (discriminator 3))
[  221.412373][    C0]  ? __unwind_start (arch/x86/kernel/unwind_orc.c:712)
[  221.412376][    C0]  stack_trace_save (kernel/stacktrace.c:123)
[  221.412379][    C0]  ? stack_trace_snprint (kernel/stacktrace.c:114)
[  221.412382][    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)
[  221.412384][    C0]  kasan_save_stack (mm/kasan/common.c:57)
[  221.412403][    C0]  kasan_save_track (mm/kasan/common.c:69 (discriminator 1) mm/kasan/common.c:78 (discriminator 1))
[  221.412405][    C0]  __kasan_save_free_info (mm/kasan/generic.c:590 (discriminator 1))
[  221.412407][    C0]  __kasan_slab_free (mm/kasan/common.c:286)
[  221.412409][    C0]  slab_free_after_rcu_debug (mm/slub.c:6700 (discriminator 2))
[  221.412413][    C0]  ? rcu_do_batch (kernel/rcu/tree.c:2605)
[  221.412415][    C0]  rcu_do_batch (./include/linux/rcupdate.h:341 (discriminator 1) kernel/rcu/tree.c:2607 (discriminator 1))
[  221.412420][    C0]  ? trace_rcu_batch_end (kernel/rcu/tree.c:2529)
[  221.412421][    C0]  ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 ./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194)
[  221.412425][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194)
[  221.412428][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 (discriminator 3) kernel/locking/spinlock.c:194 (discriminator 3))
[  221.412431][    C0]  rcu_core (kernel/rcu/tree.c:2863)
[  221.412434][    C0]  handle_softirqs (kernel/softirq.c:623)
[  221.412438][    C0]  ? trace_softirq_exit (kernel/softirq.c:580)
[  221.412440][    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)
[  221.412441][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  221.412444][    C0]  irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723 kernel/softirq.c:739)
[  221.412445][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1052 (discriminator 47) arch/x86/kernel/apic/apic.c:1052 (discriminator 47))
[  221.412448][    C0]  </IRQ>
[  221.412448][    C0]  <TASK>
[  221.412449][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473)
[  221.412451][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  221.412454][    C0] RIP: 0010:lock_acquire.part.0 (kernel/locking/lockdep.c:5872)
[  221.412456][    C0] Code: ff 65 0f c1 05 07 eb 26 04 83 f8 01 4c 8b 14 24 0f 85 30 01 00 00 9c 58 f6 c4 02 0f 85 4d 01 00 00 4d 85 d2 0f 85 16 01 00 00 <48> 8b 44 24 30 65 48 2b 05 39 aa 26 04 0f 85 43 01 00 00 48 83 c4
All code
========
   0:	ff 65 0f             	jmp    *0xf(%rbp)
   3:	c1 05 07 eb 26 04 83 	roll   $0x83,0x426eb07(%rip)        # 0x426eb11
   a:	f8                   	clc
   b:	01 4c 8b 14          	add    %ecx,0x14(%rbx,%rcx,4)
   f:	24 0f                	and    $0xf,%al
  11:	85 30                	test   %esi,(%rax)
  13:	01 00                	add    %eax,(%rax)
  15:	00 9c 58 f6 c4 02 0f 	add    %bl,0xf02c4f6(%rax,%rbx,2)
  1c:	85 4d 01             	test   %ecx,0x1(%rbp)
  1f:	00 00                	add    %al,(%rax)
  21:	4d 85 d2             	test   %r10,%r10
  24:	0f 85 16 01 00 00    	jne    0x140
  2a:*	48 8b 44 24 30       	mov    0x30(%rsp),%rax		<-- trapping instruction
  2f:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa70
  36:	04 
  37:	0f 85 43 01 00 00    	jne    0x180
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	c4                   	.byte 0xc4

Code starting with the faulting instruction
===========================================
   0:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
   5:	65 48 2b 05 39 aa 26 	sub    %gs:0x426aa39(%rip),%rax        # 0x426aa46
   c:	04 
   d:	0f 85 43 01 00 00    	jne    0x156
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	c4                   	.byte 0xc4
[  221.412457][    C0] RSP: 0018:ffa00000000a75f8 EFLAGS: 00000206
[  221.412458][    C0] RAX: 0000000000000046 RBX: 0000000000000000 RCX: a319a26b28a2fc08
[  221.412459][    C0] RDX: 0000000000000003 RSI: ffffffffa4381eb7 RDI: ffffffffa3e5d0c0
[  221.412460][    C0] RBP: 0000000000000000 R08: ff11000001a50ae0 R09: 0000000000000001
[  221.412460][    C0] R10: 0000000000000200 R11: 0000000000000000 R12: ffffffffa4978fc0
[  221.412461][    C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
[  221.412467][    C0]  ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 33))
[  221.412469][    C0]  ? lock_acquire (kernel/locking/lockdep.c:5833)
[  221.412471][    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
[  221.412473][    C0]  unwind_next_frame (./include/linux/rcupdate.h:868 ./include/linux/rcupdate.h:1195 arch/x86/kernel/unwind_orc.c:479)
[  221.412475][    C0]  ? unwind_next_frame (./include/linux/rcupdate.h:331 (discriminator 1) ./include/linux/rcupdate.h:867 (discriminator 1) ./include/linux/rcupdate.h:1195 (discriminator 1) arch/x86/kernel/unwind_orc.c:479 (discriminator 1))
[  221.412476][    C0]  ? __kasan_slab_free (mm/kasan/common.c:286)
[  221.412480][    C0]  ? stack_access_ok (arch/x86/kernel/unwind_orc.c:469)
[  221.412483][    C0]  ? __unwind_start (./arch/x86/include/asm/unwind.h:50 arch/x86/kernel/unwind_orc.c:755)
[  221.412485][    C0]  ? write_profile (kernel/stacktrace.c:83)
[  221.412487][    C0]  arch_stack_walk (arch/x86/kernel/stacktrace.c:24 (discriminator 3))
[  221.412492][    C0]  ? __kasan_slab_free (mm/kasan/common.c:286)
[  221.412495][    C0]  stack_trace_save (kernel/stacktrace.c:123)
[  221.412497][    C0]  ? stack_trace_snprint (kernel/stacktrace.c:114)
[  221.412499][    C0]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[  221.412504][    C0]  kasan_save_stack (mm/kasan/common.c:57)
[  221.412505][    C0]  ? kasan_save_stack (mm/kasan/common.c:57)
[  221.412507][    C0]  ? kasan_save_track (mm/kasan/common.c:69 (discriminator 1) mm/kasan/common.c:78 (discriminator 1))
[  221.412508][    C0]  ? __kasan_save_free_info (mm/kasan/generic.c:590 (discriminator 1))
[  221.412509][    C0]  ? __kasan_slab_free (mm/kasan/common.c:286)
[  221.412525][    C0]  kasan_save_track (mm/kasan/common.c:69 (discriminator 1) mm/kasan/common.c:78 (discriminator 1))
[  221.412527][    C0]  __kasan_save_free_info (mm/kasan/generic.c:590 (discriminator 1))
[  221.412528][    C0]  __kasan_slab_free (mm/kasan/common.c:286)
[  221.412531][    C0]  kmem_cache_free (mm/slub.c:6642 (discriminator 3) mm/slub.c:6752 (discriminator 3))
[  221.412533][    C0]  ? free_object_list.isra.0 (lib/debugobjects.c:324 (discriminator 11))
[  221.412535][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[  221.412538][    C0]  ? free_object_list.isra.0 (lib/debugobjects.c:324 (discriminator 11))
[  221.412540][    C0]  free_object_list.isra.0 (lib/debugobjects.c:324 (discriminator 11))
[  221.412543][    C0]  free_obj_work (lib/debugobjects.c:494 (discriminator 1))
[  221.412545][    C0]  ? process_one_work (kernel/workqueue.c:3239 (discriminator 1))
[  221.412548][    C0]  ? debug_objects_fill_pool.part.0 (lib/debugobjects.c:474)
[  221.412550][    C0]  ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 33))
[  221.412552][    C0]  ? lock_acquire (kernel/locking/lockdep.c:5833)
[  221.412554][    C0]  ? process_one_work (kernel/workqueue.c:3239 (discriminator 1))
[  221.412555][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  221.412558][    C0]  process_one_work (kernel/workqueue.c:3268)
[  221.412563][    C0]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:3165)
[  221.412565][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  221.412570][    C0]  ? assign_work (kernel/workqueue.c:1206)
[  221.412573][    C0]  worker_thread (kernel/workqueue.c:3340 (discriminator 2) kernel/workqueue.c:3427 (discriminator 2))
[  221.412576][    C0]  ? process_one_work (kernel/workqueue.c:3373)
[  221.412578][    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))
[  221.412581][    C0]  ? process_one_work (kernel/workqueue.c:3373)
[  221.412583][    C0]  kthread (kernel/kthread.c:463)
[  221.412585][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  221.412587][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  221.412590][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:751 (discriminator 1))
[  221.412592][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)
[  221.412594][    C0]  ret_from_fork (arch/x86/kernel/process.c:164)
[  221.412596][    C0]  ? kthread_is_per_cpu (kernel/kthread.c:412)


Finger prints:
unwind_next_frame:__unwind_start:arch_stack_walk:stack_trace_save:kasan_save_stack
irqentry_exit:sysvec_apic_timer_interrupt:handle_softirqs:irq_exit_rcu:unwind_next_frame