======================================
| [  104.238979][    C1]  #3: ffffffff9e977d20 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame (./include/linux/rcupdate.h:300 (discriminator 2) ./include/linux/rcupdate.h:838 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) arch/x86/kernel/unwind_orc.c:495 (discriminator 2))
| [  104.239142][    C1]  #4: ffffffff9e977c00 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:300 (discriminator 2) kernel/rcu/tree.c:2611 (discriminator 2))
| [  104.239307][    C1]
| [  104.239307][    C1] stack backtrace:
[  104.239426][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  104.239427][    C1] Workqueue: events virtio_fs_requests_done_work
[  104.239431][    C1] Call Trace:
[  104.239432][    C1]  <IRQ>
[  104.239434][    C1]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[  104.239439][    C1]  print_usage_bug.part.0.cold (kernel/locking/lockdep.c:4042)
[  104.239442][    C1]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[  104.239445][    C1]  mark_lock_irq (kernel/locking/lockdep.c:4013 kernel/locking/lockdep.c:4056 kernel/locking/lockdep.c:4267)
[  104.239447][    C1]  ? sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[  104.239449][    C1]  ? asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  104.239451][    C1]  ? save_trace (kernel/locking/lockdep.c:589)
[  104.239453][    C1]  ? virtqueue_enable_cb_prepare_packed (drivers/virtio/virtio_ring.c:2239)
[  104.239457][    C1]  mark_lock (kernel/locking/lockdep.c:4753)
[  104.239458][    C1]  mark_usage (kernel/locking/lockdep.c:4642)
[  104.239460][    C1]  __lock_acquire (kernel/locking/lockdep.c:5191)
[  104.239461][    C1]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[  104.239463][    C1]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[  104.239465][    C1]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  104.239467][    C1]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  104.239469][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  104.239471][    C1]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  104.239473][    C1]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:158 (discriminator 1) kernel/locking/spinlock.c:158 (discriminator 1))
[  104.239474][    C1]  ? tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  104.239476][    C1] tcf_mirred_release (./include/linux/spinlock.h:342 net/sched/act_mirred.c:78) act_mirred
[  104.239478][    C1]  tcf_action_rcu_free (net/sched/act_api.c:367 net/sched/act_api.c:378)
[  104.239479][    C1]  ? rcu_do_batch (./include/linux/rcupdate.h:310 (discriminator 2) kernel/rcu/tree.c:2619 (discriminator 2))
[  104.239481][    C1]  rcu_do_batch (kernel/rcu/tree.c:2617)
[  104.239484][    C1]  ? trace_rcu_batch_end (./include/trace/events/rcu.h:714 (discriminator 19))
[  104.239486][    C1]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[  104.239487][    C1]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4411 (discriminator 2))
[  104.239489][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  104.239491][    C1]  rcu_core (kernel/rcu/tree.c:2869)
[  104.239492][    C1]  handle_softirqs (kernel/softirq.c:622)
[  104.239494][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  104.239497][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  104.239498][    C1]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[  104.239500][    C1]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[  104.239502][    C1]  irq_exit_rcu (kernel/softirq.c:752)
[  104.239503][    C1]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1061 (discriminator 37) arch/x86/kernel/apic/apic.c:1061 (discriminator 37))
[  104.239505][    C1]  </IRQ>
[  104.239506][    C1]  <TASK>
[  104.239506][    C1]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:697)
[  104.239508][    C1] RIP: 0010:lock_acquire.part.0 (./arch/x86/include/asm/irqflags.h:158 (discriminator 1) kernel/locking/lockdep.c:5871 (discriminator 1))
[  104.239510][    C1] Code: ff 65 0f c1 05 37 d9 33 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 a9 92 33 04 0f 85 43 01 00 00 48 83 c4
All code
========
   0:	ff 65 0f             	jmp    *0xf(%rbp)
   3:	c1 05 37 d9 33 04 83 	roll   $0x83,0x433d937(%rip)        # 0x433d941
   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 a9 92 33 	sub    %gs:0x43392a9(%rip),%rax        # 0x43392e0
  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 a9 92 33 	sub    %gs:0x43392a9(%rip),%rax        # 0x43392b6
   c:	04 
   d:	0f 85 43 01 00 00    	jne    0x156
  13:	48                   	rex.W
  14:	83                   	.byte 0x83
  15:	c4                   	.byte 0xc4
[  104.239512][    C1] RSP: 0018:ffa0000001727530 EFLAGS: 00000206
[  104.239514][    C1] RAX: 0000000000000046 RBX: 0000000000000000 RCX: 287477c5ffacdb37
[  104.239516][    C1] RDX: 0000000000000001 RSI: ffffffff9e3ebde8 RDI: ffffffff9de6f6c0
[  104.239517][    C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ff11000008c98ba8
[  104.239517][    C1] R10: 0000000000000200 R11: 0000000000000001 R12: ffffffff9e977d20
[  104.239518][    C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
[  104.239521][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  104.239522][    C1]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  104.239524][    C1]  unwind_next_frame (./include/linux/rcupdate.h:300 (discriminator 2) ./include/linux/rcupdate.h:838 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) arch/x86/kernel/unwind_orc.c:495 (discriminator 2))
[  104.239526][    C1]  ? unwind_next_frame (./include/linux/rcupdate.h:300 (discriminator 2) ./include/linux/rcupdate.h:838 (discriminator 2) ./include/linux/rcupdate.h:1181 (discriminator 2) arch/x86/kernel/unwind_orc.c:495 (discriminator 2))
[  104.239527][    C1]  ? ret_from_fork (arch/x86/kernel/process.c:158)
[  104.239530][    C1]  ? stack_access_ok (./arch/x86/include/asm/stacktrace.h:55)
[  104.239531][    C1]  ? unwind_next_frame (./include/linux/rcupdate.h:871 ./include/linux/rcupdate.h:1181 arch/x86/kernel/unwind_orc.c:495)
[  104.239533][    C1]  ? __unwind_start (arch/x86/kernel/unwind_orc.c:787)
[  104.239534][    C1]  ? write_profile (profile.c:?)
[  104.239536][    C1]  arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[  104.239539][    C1]  ? kthread_affine_node (kernel/kthread.c:378)
[  104.239541][    C1]  ? ret_from_fork (arch/x86/kernel/process.c:158)
[  104.239543][    C1]  ? detach_buf_split_in_order (drivers/virtio/virtio_ring.c:850 drivers/virtio/virtio_ring.c:881)
[  104.239545][    C1]  stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[  104.239547][    C1]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[  104.239549][    C1]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4040 (discriminator 3) kernel/rcu/tree.c:4032 (discriminator 3))
[  104.239551][    C1]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[  104.239552][    C1]  ? sched_ttwu_pending (kernel/sched/core.c:3807 (discriminator 7))
[  104.239556][    C1]  kasan_save_stack (mm/kasan/common.c:57)
[  104.239559][    C1]  ? kasan_save_stack (mm/kasan/common.c:57)
[  104.239561][    C1]  ? kasan_record_aux_stack (mm/kasan/generic.c:556)
[  104.239563][    C1]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3131)
[  104.239564][    C1]  ? kfree (./include/linux/kmemleak.h:50 mm/slub.c:2614 mm/slub.c:6251 mm/slub.c:6566)
[  104.239567][    C1]  ? detach_buf_split_in_order (drivers/virtio/virtio_ring.c:850 drivers/virtio/virtio_ring.c:881)
[  104.239568][    C1]  ? virtqueue_get_buf_ctx_split (drivers/virtio/virtio_ring.c:891 drivers/virtio/virtio_ring.c:958)
[  104.239570][    C1]  ? virtio_fs_requests_done_work (fs/fuse/virtio_fs.c:843 (discriminator 1))
[  104.239571][    C1]  ? process_one_work (kernel/workqueue.c:3314)
[  104.239573][    C1]  ? worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  104.239574][    C1]  ? kthread (kernel/kthread.c:436)
[  104.239576][    C1]  ? ret_from_fork (arch/x86/kernel/process.c:158)
[  104.239581][    C1]  kasan_record_aux_stack (mm/kasan/generic.c:556)
[  104.239582][    C1]  ? __remove_object (mm/kmemleak.c:609)
[  104.239584][    C1]  __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3131)
[  104.239585][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  104.239587][    C1]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[  104.239589][    C1]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 1) kernel/locking/spinlock.c:198 (discriminator 1))
[  104.239590][    C1]  kfree (./include/linux/kmemleak.h:50 mm/slub.c:2614 mm/slub.c:6251 mm/slub.c:6566)
[  104.239593][    C1]  detach_buf_split_in_order (drivers/virtio/virtio_ring.c:850 drivers/virtio/virtio_ring.c:881)
[  104.239595][    C1]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116)
[  104.239597][    C1]  virtqueue_get_buf_ctx_split (drivers/virtio/virtio_ring.c:891 drivers/virtio/virtio_ring.c:958)
[  104.239599][    C1]  virtio_fs_requests_done_work (fs/fuse/virtio_fs.c:843 (discriminator 1))
[  104.239601][    C1]  ? virtio_fs_complete_req_work (fs/fuse/virtio_fs.c:823)
[  104.239603][    C1]  ? process_one_work (kernel/workqueue.c:3290 (discriminator 2))
[  104.239605][    C1]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  104.239606][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  104.239608][    C1]  process_one_work (kernel/workqueue.c:3314)
[  104.239611][    C1]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:1822 (discriminator 4))
[  104.239613][    C1]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  104.239615][    C1]  worker_thread (kernel/workqueue.c:3397 kernel/workqueue.c:3478)
[  104.239618][    C1]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[  104.239619][    C1]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[  104.239621][    C1]  ? rescuer_thread (./include/linux/list.h:404 (discriminator 3))
[  104.239623][    C1]  kthread (kernel/kthread.c:436)
[  104.239625][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  104.239628][    C1]  ? kthread_affine_node (kernel/kthread.c:378)
[  104.239629][    C1]  ret_from_fork (arch/x86/kernel/process.c:158)
[  104.239631][    C1]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[  104.239633][    C1]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[  104.239635][    C1]  ? kthread_affine_node (kernel/kthread.c:378)


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock