======================================
| [ 19.873402][ C1] #0: ffff8880010a9548 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work (kernel/workqueue.c:3212 (discriminator 4)) 
| [ 19.873988][ C1] #1: ffffc900009b7d40 ((work_completion)(&fsvq->done_work)){+.+.}-{0:0}, at: process_one_work (kernel/workqueue.c:3214) 
| [   19.874632][    C1]
| [   19.874632][    C1] stack backtrace:
[   19.874994][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.874996][    C1] Workqueue: events virtio_fs_requests_done_work
[   19.875002][    C1] Call Trace:
[   19.875004][    C1]  <IRQ>
[ 19.875007][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 19.875016][ C1] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6866) 
[ 19.875025][ C1] veth_xdp_rcv (drivers/net/veth.c:907 (discriminator 9)) 
[ 19.875030][ C1] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 19.875039][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 19.875045][ C1] ? __pfx_veth_xdp_rcv (drivers/net/veth.c:899) 
[ 19.875051][ C1] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.875056][ C1] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 19.875065][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 19.875075][ C1] veth_poll (drivers/net/veth.c:977) 
[ 19.875080][ C1] ? __pfx_veth_poll (drivers/net/veth.c:965) 
[ 19.875088][ C1] ? 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) 
[ 19.875094][ C1] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:143 kernel/locking/spinlock.c:186) 
[ 19.875099][ C1] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 19.875105][ C1] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.875108][ C1] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 19.875111][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 19.875119][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5235) 
[ 19.875129][ C1] __napi_poll.constprop.0 (net/core/dev.c:7383) 
[ 19.875138][ C1] net_rx_action (net/core/dev.c:7447 net/core/dev.c:7569) 
[ 19.875150][ C1] ? __pfx_net_rx_action (net/core/dev.c:7531) 
[ 19.875155][ C1] ? rcu_start_this_gp (kernel/rcu/tree.c:1013) 
[ 19.875160][ C1] ? trace_rcu_quiescent_state_report (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736 ./include/trace/events/rcu.h:368) 
[ 19.875171][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 19.875182][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 19.875193][ C1] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 19.875196][ C1] irq_exit_rcu (kernel/softirq.c:698) 
[ 19.875200][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   19.875204][    C1]  </IRQ>
[   19.875205][    C1]  <TASK>
[ 19.875208][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 19.875212][ C1] RIP: 0010:stack_depot_save_flags (./include/linux/jhash.h:129 lib/stackdepot.c:514 lib/stackdepot.c:615) 
[ 19.875217][ C1] Code: 8b 39 44 03 61 08 83 ee 03 48 83 c1 0c 03 51 f8 44 29 e7 01 c7 44 89 e0 41 01 d4 c1 c0 04 31 f8 89 c7 29 c2 44 01 e0 c1 c7 06 <31> d7 89 fa 41 29 fc 44 8d 0c 07 c1 c2 08 44 31 e2 89 d7 29 d0 c1
All code
========
   0:	8b 39                	mov    (%rcx),%edi
   2:	44 03 61 08          	add    0x8(%rcx),%r12d
   6:	83 ee 03             	sub    $0x3,%esi
   9:	48 83 c1 0c          	add    $0xc,%rcx
   d:	03 51 f8             	add    -0x8(%rcx),%edx
  10:	44 29 e7             	sub    %r12d,%edi
  13:	01 c7                	add    %eax,%edi
  15:	44 89 e0             	mov    %r12d,%eax
  18:	41 01 d4             	add    %edx,%r12d
  1b:	c1 c0 04             	rol    $0x4,%eax
  1e:	31 f8                	xor    %edi,%eax
  20:	89 c7                	mov    %eax,%edi
  22:	29 c2                	sub    %eax,%edx
  24:	44 01 e0             	add    %r12d,%eax
  27:	c1 c7 06             	rol    $0x6,%edi
  2a:*	31 d7                	xor    %edx,%edi		<-- trapping instruction
  2c:	89 fa                	mov    %edi,%edx
  2e:	41 29 fc             	sub    %edi,%r12d
  31:	44 8d 0c 07          	lea    (%rdi,%rax,1),%r9d
  35:	c1 c2 08             	rol    $0x8,%edx
  38:	44 31 e2             	xor    %r12d,%edx
  3b:	89 d7                	mov    %edx,%edi
  3d:	29 d0                	sub    %edx,%eax
  3f:	c1                   	.byte 0xc1

Code starting with the faulting instruction
===========================================
   0:	31 d7                	xor    %edx,%edi
   2:	89 fa                	mov    %edi,%edx
   4:	41 29 fc             	sub    %edi,%r12d
   7:	44 8d 0c 07          	lea    (%rdi,%rax,1),%r9d
   b:	c1 c2 08             	rol    $0x8,%edx
   e:	44 31 e2             	xor    %r12d,%edx
  11:	89 d7                	mov    %edx,%edi
  13:	29 d0                	sub    %edx,%eax
  15:	c1                   	.byte 0xc1
[   19.875219][    C1] RSP: 0018:ffffc900009b7750 EFLAGS: 00000292
[   19.875222][    C1] RAX: 0000000086685097 RBX: 0000000000000000 RCX: ffffc900009b77f0
[   19.875224][    C1] RDX: 00000000f59f7b90 RSI: 0000000000000010 RDI: 000000006e761b20
[   19.875225][    C1] RBP: ffffc900009b77c0 R08: 000000000000000e R09: 00000000dd1ba14c
[   19.875227][    C1] R10: 0000000000000050 R11: ffffffff8df8a660 R12: 0000000004ae782b
[   19.875229][    C1] R13: 0000000000000001 R14: 0000000000000000 R15: 000000000000000e
[ 19.875244][ C1] ? validate_chain (kernel/locking/lockdep.c:3802 kernel/locking/lockdep.c:3822 kernel/locking/lockdep.c:3877) 
[ 19.875252][ C1] kasan_save_stack (mm/kasan/common.c:49) 
[ 19.875258][ C1] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 19.875261][ C1] ? kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 19.875264][ C1] ? kasan_save_free_info (mm/kasan/generic.c:579) 
[ 19.875267][ C1] ? __kasan_slab_free (mm/kasan/common.c:271) 
[ 19.875271][ C1] ? kfree (mm/slub.c:4646 mm/slub.c:4845) 
[ 19.875275][ C1] ? fuse_readpages_end (fs/fuse/file.c:937) 
[ 19.875279][ C1] ? fuse_request_end (fs/fuse/dev.c:486) 
[ 19.875283][ C1] ? virtio_fs_request_complete (./include/linux/spinlock.h:351 fs/fuse/virtio_fs.c:799) 
[ 19.875285][ C1] ? virtio_fs_requests_done_work (fs/fuse/virtio_fs.c:851) 
[ 19.875288][ C1] ? process_one_work (kernel/workqueue.c:3238) 
[ 19.875290][ C1] ? worker_thread (kernel/workqueue.c:3313 kernel/workqueue.c:3400) 
[ 19.875293][ C1] ? kthread (kernel/kthread.c:464) 
[ 19.875296][ C1] ? ret_from_fork (arch/x86/kernel/process.c:153) 
[ 19.875301][ C1] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 19.875305][ C1] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 19.875312][ C1] ? mark_held_locks (kernel/locking/lockdep.c:4326) 
[ 19.875316][ C1] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.875321][ C1] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 19.875324][ C1] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.875328][ C1] ? __debug_check_no_obj_freed (lib/debugobjects.c:1110) 
[ 19.875332][ C1] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 19.875341][ C1] ? __pfx___debug_check_no_obj_freed (lib/debugobjects.c:1070) 
[ 19.875349][ C1] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3107) 
[ 19.875353][ C1] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) 
[ 19.875357][ C1] kasan_save_track (./arch/x86/include/asm/current.h:25 mm/kasan/common.c:60 mm/kasan/common.c:69) 
[ 19.875361][ C1] kasan_save_free_info (mm/kasan/generic.c:579) 
[ 19.875364][ C1] __kasan_slab_free (mm/kasan/common.c:271) 
[ 19.875369][ C1] kfree (mm/slub.c:4646 mm/slub.c:4845) 
[ 19.875373][ C1] ? find_held_lock (kernel/locking/lockdep.c:5348) 
[ 19.875375][ C1] ? fuse_readpages_end (fs/fuse/file.c:937) 
[ 19.875382][ C1] fuse_readpages_end (fs/fuse/file.c:937) 
[ 19.875387][ C1] ? __pfx_fuse_readpages_end (fs/fuse/file.c:935) 
[ 19.875393][ C1] fuse_request_end (fs/fuse/dev.c:486) 
[ 19.875402][ C1] virtio_fs_request_complete (./include/linux/spinlock.h:351 fs/fuse/virtio_fs.c:799) 
[ 19.875406][ C1] ? virtio_fs_requests_done_work (fs/fuse/virtio_fs.c:838) 
[ 19.875416][ C1] virtio_fs_requests_done_work (fs/fuse/virtio_fs.c:851) 
[ 19.875424][ C1] ? __pfx_virtio_fs_requests_done_work (fs/fuse/virtio_fs.c:814) 
[ 19.875433][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 19.875440][ C1] process_one_work (kernel/workqueue.c:3238) 
[ 19.875452][ C1] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 19.875463][ C1] ? assign_work (kernel/workqueue.c:1200) 
[ 19.875470][ C1] worker_thread (kernel/workqueue.c:3313 kernel/workqueue.c:3400) 
[ 19.875481][ C1] ? __pfx_worker_thread (kernel/workqueue.c:3346) 
[ 19.875487][ C1] kthread (kernel/kthread.c:464) 
[ 19.875491][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 19.875493][ C1] ? ret_from_fork (arch/x86/kernel/process.c:152) 
[ 19.875496][ C1] ? __lock_release (kernel/locking/lockdep.c:5534) 
[ 19.875501][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) 
[ 19.875505][ C1] ? __pfx_kthread (kernel/kthread.c:413) 
[ 19.875510][ C1] ret_from_fork (arch/x86/kernel/process.c:153) 
[ 19.875513][ C1] ? __pfx_kthread (kernel/kthread.c:413) 


Finger prints:
lockdep_rcu_suspicious:veth_xdp_rcv:veth_poll:net_rx_action:handle_softirqs