======================================
| [   13.565826][    C0]  #2: ffffffff84b7dd40 (rcu_read_lock){....}-{1:3}, at: ip6_input (./include/linux/rcupdate.h:300 (discriminator 2) ./include/linux/rcupdate.h:840 (discriminator 2) net/ipv6/ip6_input.c:544 (discriminator 2))
| [   13.566151][    C0]  #3: ff1100000d0f2f68 (&vxlan->hash_lock){+.-.}-{3:3}, at: vxlan_snoop (./include/linux/spinlock.h:342 drivers/net/vxlan/vxlan_core.c:1487) vxlan
| [   13.566525][    C0]
| [   13.566525][    C0] stack backtrace:
[   13.566753][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.566754][    C0] Call Trace:
[   13.566756][    C0]  <IRQ>
[   13.566757][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.566763][    C0]  lockdep_rcu_suspicious.cold (kernel/locking/lockdep.c:6876)
[   13.566768][    C0] vxlan_fdb_create (drivers/net/vxlan/vxlan_core.c:872 (discriminator 8)) vxlan
[   13.566774][    C0]  ? vxlan_find_mac_rcu (./include/linux/rhashtable.h:648 (discriminator 8) ./include/linux/rhashtable.h:673 (discriminator 8) drivers/net/vxlan/vxlan_core.c:396 (discriminator 8)) vxlan
[   13.566781][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   13.566785][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   13.566788][    C0]  ? vxlan_open (drivers/net/vxlan/vxlan_core.c:3030) vxlan
[   13.566792][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   13.566797][    C0] vxlan_fdb_update (drivers/net/vxlan/vxlan_core.c:1095 drivers/net/vxlan/vxlan_core.c:1138) vxlan
[   13.566804][    C0]  ? vxlan_fdb_create (./arch/x86/include/asm/bitops.h:202 (discriminator 1)) vxlan
[   13.566808][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   13.566811][    C0]  ? 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)
[   13.566815][    C0] vxlan_snoop (drivers/net/vxlan/vxlan_core.c:1491) vxlan
[   13.566823][    C0] vxlan_rcv (drivers/net/vxlan/vxlan_core.c:1634 (discriminator 1) drivers/net/vxlan/vxlan_core.c:1772 (discriminator 1)) vxlan
[   13.566832][    C0]  ? encap_bypass_if_local (drivers/net/vxlan/vxlan_core.c:2353) vxlan
[   13.566837][    C0]  ? __udp6_lib_lookup (net/ipv6/udp.c:392)
[   13.566843][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   13.566845][    C0]  ? ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:498 (discriminator 54))
[   13.566848][    C0]  ? encap_bypass_if_local (drivers/net/vxlan/vxlan_core.c:2353) vxlan
[   13.566852][    C0]  ? udpv6_queue_rcv_one_skb (net/ipv6/udp.c:842)
[   13.566854][    C0]  udpv6_queue_rcv_one_skb (net/ipv6/udp.c:842)
[   13.566857][    C0]  udp6_unicast_rcv_skb (net/ipv6/udp.c:1029)
[   13.566860][    C0]  ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:479)
[   13.566867][    C0]  ip6_input_finish (net/ipv6/ip6_input.c:534)
[   13.566869][    C0]  ip6_input (./include/linux/netfilter.h:325 ./include/linux/netfilter.h:319 net/ipv6/ip6_input.c:545)
[   13.566872][    C0]  ? ip6_input_finish (net/ipv6/ip6_input.c:527 (discriminator 46))
[   13.566875][    C0]  ? ip6_rcv_core (./include/linux/rcupdate.h:873 net/ipv6/ip6_input.c:328)
[   13.566880][    C0]  ipv6_rcv (./include/net/dst.h:480 (discriminator 4) net/ipv6/ip6_input.c:119 (discriminator 4) ./include/linux/netfilter.h:325 (discriminator 4) ./include/linux/netfilter.h:319 (discriminator 4) net/ipv6/ip6_input.c:351 (discriminator 4))
[   13.566882][    C0]  ? ip6_rcv_core (net/ipv6/ip6_input.c:211 (discriminator 96))
[   13.566885][    C0]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   13.566888][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   13.566892][    C0]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6667 (discriminator 2))
[   13.566894][    C0]  __netif_receive_skb_one_core (net/core/dev.c:6228)
[   13.566896][    C0]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   13.566899][    C0]  ? __netif_receive_skb_list_core (net/core/dev.c:6274 (discriminator 2))
[   13.566901][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   13.566907][    C0]  process_backlog (net/core/dev.c:6669)
[   13.566912][    C0]  __napi_poll (net/core/dev.c:7728)
[   13.566915][    C0]  net_rx_action (net/core/dev.c:7791 net/core/dev.c:7948)
[   13.566921][    C0]  ? __napi_poll (./include/net/gro.h:507)
[   13.566922][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   13.566928][    C0]  ? sched_balance_softirq (kernel/sched/sched.h:1691 (discriminator 6) kernel/sched/sched.h:1999 (discriminator 6) kernel/sched/sched.h:2032 (discriminator 6) kernel/sched/fair.c:11243 (discriminator 6) kernel/sched/fair.c:14513 (discriminator 6))
[   13.566934][    C0]  ? clockevents_program_event (kernel/time/clockevents.c:372)
[   13.566938][    C0]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[   13.566942][    C0]  handle_softirqs (kernel/softirq.c:622)
[   13.566948][    C0]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[   13.566952][    C0]  __irq_exit_rcu (kernel/softirq.c:656 kernel/softirq.c:496 kernel/softirq.c:735)
[   13.566955][    C0]  irq_exit_rcu (kernel/softirq.c:752)
[   13.566957][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   13.566960][    C0]  </IRQ>
[   13.566961][    C0]  <TASK>
[   13.566962][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   13.566965][    C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 12) kernel/locking/spinlock.c:198 (discriminator 12))
[   13.566969][    C0] Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 c1 b5 c1 fd 48 89 df e8 b9 0b c2 fd f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f <bf> 01 00 00 00 e8 60 ec b3 fd 65 8b 05 09 bd f8 01 85 c0 74 12 5b
All code
========
   0:	f5                   	cmc
   1:	53                   	push   %rbx
   2:	48 8b 74 24 10       	mov    0x10(%rsp),%rsi
   7:	48 89 fb             	mov    %rdi,%rbx
   a:	48 83 c7 18          	add    $0x18,%rdi
   e:	e8 c1 b5 c1 fd       	call   0xfffffffffdc1b5d4
  13:	48 89 df             	mov    %rbx,%rdi
  16:	e8 b9 0b c2 fd       	call   0xfffffffffdc20bd4
  1b:	f7 c5 00 02 00 00    	test   $0x200,%ebp
  21:	75 1f                	jne    0x42
  23:	9c                   	pushf
  24:	58                   	pop    %rax
  25:	f6 c4 02             	test   $0x2,%ah
  28:	75 2f                	jne    0x59
  2a:*	bf 01 00 00 00       	mov    $0x1,%edi		<-- trapping instruction
  2f:	e8 60 ec b3 fd       	call   0xfffffffffdb3ec94
  34:	65 8b 05 09 bd f8 01 	mov    %gs:0x1f8bd09(%rip),%eax        # 0x1f8bd44
  3b:	85 c0                	test   %eax,%eax
  3d:	74 12                	je     0x51
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	bf 01 00 00 00       	mov    $0x1,%edi
   5:	e8 60 ec b3 fd       	call   0xfffffffffdb3ec6a
   a:	65 8b 05 09 bd f8 01 	mov    %gs:0x1f8bd09(%rip),%eax        # 0x1f8bd1a
  11:	85 c0                	test   %eax,%eax
  13:	74 12                	je     0x27
  15:	5b                   	pop    %rbx
[   13.566971][    C0] RSP: 0018:ffa0000001eef5e8 EFLAGS: 00000246
[   13.566973][    C0] RAX: 0000000000000092 RBX: ff11000001041440 RCX: ffffffff83d2b333
[   13.566975][    C0] RDX: ff11000010098040 RSI: ffffffff846173d9 RDI: ffffffff8407a960
[   13.566976][    C0] RBP: 0000000000000246 R08: 0000000000000000 R09: 0000000000000000
[   13.566977][    C0] R10: 0000000000000000 R11: 0000000000000001 R12: ff11000001041440
[   13.566978][    C0] R13: ff1100000103fe40 R14: ff1100000d5fe3b0 R15: ffd4000000357f80
[   13.566988][    C0]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:178 (discriminator 6) kernel/locking/spinlock.c:198 (discriminator 6))
[   13.566992][    C0]  get_from_partial_node (./include/linux/spinlock.h:408 (discriminator 3) mm/slub.c:3884 (discriminator 3))
[   13.566999][    C0]  ___slab_alloc (mm/slub.c:3975 (discriminator 1) mm/slub.c:4487 (discriminator 1))
[   13.567001][    C0]  ? __pcs_replace_empty_main (mm/slub.c:4666 (discriminator 20))
[   13.567005][    C0]  kmem_cache_alloc_noprof (mm/slub.c:4936 mm/slub.c:4959)
[   13.567007][    C0]  ? __fput (fs/file_table.c:512)
[   13.567010][    C0]  ? __alloc_object (mm/kmemleak.c:494 (discriminator 1) mm/kmemleak.c:676 (discriminator 1))
[   13.567015][    C0]  __alloc_object (mm/kmemleak.c:494 (discriminator 1) mm/kmemleak.c:676 (discriminator 1))
[   13.567017][    C0]  ? __pcs_replace_empty_main (mm/slub.c:4666 (discriminator 20))
[   13.567019][    C0]  __create_object (mm/kmemleak.c:790)
[   13.567022][    C0]  __kmalloc_noprof (./include/linux/kmemleak.h:44 mm/slub.c:4625 mm/slub.c:4945 mm/slub.c:5361 mm/slub.c:5387)
[   13.567025][    C0]  ? virtqueue_add_split (./include/linux/slab.h:973 drivers/virtio/virtio_ring.c:610 drivers/virtio/virtio_ring.c:685)
[   13.567031][    C0]  virtqueue_add_split (./include/linux/slab.h:973 drivers/virtio/virtio_ring.c:610 drivers/virtio/virtio_ring.c:685)
[   13.567037][    C0]  ? virtqueue_add_packed (drivers/virtio/virtio_ring.c:1720)
[   13.567039][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   13.567045][    C0]  virtqueue_add_sgs (drivers/virtio/virtio_ring.c:2839 (discriminator 7) drivers/virtio/virtio_ring.c:2878 (discriminator 7))
[   13.567050][    C0]  virtio_fs_enqueue_req (fs/fuse/virtio_fs.c:1461)
[   13.567056][    C0]  ? virtio_fs_probe (./include/linux/virtio_config.h:371)
[   13.567058][    C0]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4069 (discriminator 3) kernel/rcu/tree.c:4061 (discriminator 3))
[   13.567068][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   13.567071][    C0]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   13.567075][    C0]  virtio_fs_send_req (fs/fuse/virtio_fs.c:1520)
[   13.567077][    C0]  ? fuse_request_alloc (./include/linux/instrumented.h:41 ./include/asm-generic/bitops/instrumented-non-atomic.h:28 fs/fuse/dev.c:41 fs/fuse/dev.c:50)
[   13.567081][    C0]  fuse_chan_send (fs/fuse/dev.c:755 fs/fuse/dev.c:833)
[   13.567085][    C0]  fuse_file_put (fs/fuse/fuse_i.h:1012 fs/fuse/file.c:115 fs/fuse/file.c:101)
[   13.567087][    C0]  ? fuse_file_release (fs/fuse/file.c:360)
[   13.567090][    C0]  fuse_release (fs/fuse/file.c:393 (discriminator 1) fs/fuse/file.c:408 (discriminator 1))
[   13.567092][    C0]  __fput (fs/file_table.c:512)
[   13.567095][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   13.567097][    C0]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3184 (discriminator 6))
[   13.567099][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   13.567104][    C0]  task_work_run (kernel/task_work.c:233)
[   13.567107][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   13.567109][    C0]  ? task_work_cancel (kernel/task_work.c:190)
[   13.567111][    C0]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   13.567115][    C0]  do_exit (./include/linux/task_work.h:40 kernel/exit.c:1004)
[   13.567118][    C0]  ? exit_notify (kernel/exit.c:776)
[   13.567119][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   13.567122][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   13.567126][    C0]  do_group_exit (kernel/exit.c:1147)
[   13.567129][    C0]  __x64_sys_exit_group (kernel/exit.c:1158 kernel/exit.c:1156 kernel/exit.c:1156)
[   13.567131][    C0]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[   13.567134][    C0]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   13.567137][    C0]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   13.567139][    C0]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.567141][    C0]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.567143][    C0] RIP: 0033:0x7f98236681b8
[   13.567146][    C0] Code: Unable to access opcode bytes at 0x7f982366818e.

Code starting with the faulting instruction
===========================================
[   13.567147][    C0] RSP: 002b:00007ffeba6f4de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   13.567148][    C0] RAX: ffffffffffffffda RBX: 00007f9823798f88 RCX: 00007f98236681b8
[   13.567149][    C0] RDX: 00007f98235a5a48 RSI: ffffffffffffffb0 RDI: 0000000000000000
[   13.567150][    C0] RBP: 00007ffeba6f4e40 R08: 0000000000000000 R09: 0000000000000000
[   13.567151][    C0] R10: 00007ffeba6f4c80 R11: 0000000000000246 R12: 0000000000000002


Finger prints:
vxlan_fdb_create:vxlan_fdb_update:vxlan_snoop:vxlan_rcv:udpv6_queue_rcv_one_skb