======================================
| [   12.695738][  T377] br1: entered promiscuous mode
| [   13.027421][    C2] ------------[ cut here ]------------
| [   13.027715][    C2] WARNING: ./include/linux/skbuff.h:3239 at __udp6_lib_err_encap+0x614/0x950, CPU#2: 2/67
| [   13.028047][    C2] Modules linked in: macvlan 8021q vxlan ip6_udp_tunnel udp_tunnel bridge stp llc vrf veth
[   13.028830][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.029099][    C2] Workqueue: mld mld_ifc_work
[   13.029300][    C2] RIP: 0010:__udp6_lib_err_encap (./include/linux/skbuff.h:3239 (discriminator 3) ./include/linux/skbuff.h:3235 (discriminator 3) net/ipv6/udp.c:652 (discriminator 3))
[   13.029591][    C2] Code: 08 84 d2 0f 85 4f 02 00 00 44 8b 4b 28 e9 a9 fe ff ff 4c 8b 6c 24 20 4c 8b 7c 24 28 45 31 e4 4c 8b 74 24 30 e9 d7 fd ff ff 90 <0f> 0b 90 48 29 c5 48 89 e8 48 81 fd ff ff 00 00 0f 86 ff fa ff ff
All code
========
   0:	08 84 d2 0f 85 4f 02 	or     %al,0x24f850f(%rdx,%rdx,8)
   7:	00 00                	add    %al,(%rax)
   9:	44 8b 4b 28          	mov    0x28(%rbx),%r9d
   d:	e9 a9 fe ff ff       	jmp    0xfffffffffffffebb
  12:	4c 8b 6c 24 20       	mov    0x20(%rsp),%r13
  17:	4c 8b 7c 24 28       	mov    0x28(%rsp),%r15
  1c:	45 31 e4             	xor    %r12d,%r12d
  1f:	4c 8b 74 24 30       	mov    0x30(%rsp),%r14
  24:	e9 d7 fd ff ff       	jmp    0xfffffffffffffe00
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 29 c5             	sub    %rax,%rbp
  30:	48 89 e8             	mov    %rbp,%rax
  33:	48 81 fd ff ff 00 00 	cmp    $0xffff,%rbp
  3a:	0f 86 ff fa ff ff    	jbe    0xfffffffffffffb3f

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 29 c5             	sub    %rax,%rbp
   6:	48 89 e8             	mov    %rbp,%rax
   9:	48 81 fd ff ff 00 00 	cmp    $0xffff,%rbp
  10:	0f 86 ff fa ff ff    	jbe    0xfffffffffffffb15
[   13.030156][    C2] RSP: 0018:ffa00000002286a8 EFLAGS: 00010293
[   13.030393][    C2] RAX: ff1100000ca00ac0 RBX: ff1100000cbb1380 RCX: ff1100000ca00b30
[   13.030665][    C2] RDX: ff1100000ca00b00 RSI: ff1100000ca00b08 RDI: fffffffffffffff8
[   13.030928][    C2] RBP: ff1100000ca00b08 R08: 1fe2200001976289 R09: ff1100000cbb1380
[   13.031206][    C2] R10: ffffffff93735c00 R11: 0000000000000003 R12: 0000000000000000
[   13.031483][    C2] R13: ff1100000cbb1432 R14: ff1100000cbb1440 R15: ff1100000cbb1434
[   13.031751][    C2] FS:  0000000000000000(0000) GS:ff110000a38ab000(0000) knlGS:0000000000000000
[   13.032052][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   13.032288][    C2] CR2: 0000559e5d6e1620 CR3: 000000002c93a003 CR4: 0000000000771ef0
[   13.032565][    C2] PKRU: 55555554
[   13.032721][    C2] Call Trace:
[   13.032877][    C2]  <IRQ>
[   13.032999][    C2]  ? __bfs (kernel/locking/lockdep.c:1815 (discriminator 3))
[   13.033160][    C2]  udpv6_err (net/ipv6/udp.c:714)
[   13.033327][    C2]  ? __udp6_lib_err_encap (net/ipv6/udp.c:695)
[   13.033535][    C2]  ? check_path.constprop.0 (kernel/locking/lockdep.c:2133 (discriminator 2))
[   13.033731][    C2]  icmpv6_notify (net/ipv6/icmp.c:1087)
[   13.033924][    C2]  ? icmpv6_param_prob_reason (net/ipv6/icmp.c:1039)
[   13.034115][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:5870 (discriminator 2))
[   13.034310][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   13.034518][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[   13.034711][    C2]  icmpv6_rcv (net/ipv6/icmp.c:1230)
[   13.034908][    C2]  ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:480)
[   13.035103][    C2]  ip6_input_finish (net/ipv6/ip6_input.c:532)
[   13.035296][    C2]  ip6_input (./include/linux/rcupdate.h:867 net/ipv6/ip6_input.c:543)
[   13.035464][    C2]  ? ip6_input_finish (net/ipv6/ip6_input.c:536)
[   13.035650][    C2]  ? ip6_rcv_core (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/ipv6/ip6_input.c:328 (discriminator 2))
[   13.035841][    C2]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 2))
[   13.036035][    C2]  ? ip6_rcv_core (./include/net/sock.h:2995 net/ipv6/ip6_input.c:331)
[   13.036228][    C2]  ipv6_rcv (./include/net/dst.h:480 (discriminator 4) net/ipv6/ip6_input.c:119 (discriminator 4) ./include/linux/netfilter.h:318 (discriminator 4) ./include/linux/netfilter.h:312 (discriminator 4) net/ipv6/ip6_input.c:351 (discriminator 4))
[   13.036393][    C2]  ? ip6_rcv_core (net/ipv6/ip6_input.c:345)
[   13.036593][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 3) kernel/locking/lockdep.c:3821 (discriminator 3) kernel/locking/lockdep.c:3876 (discriminator 3))
[   13.036788][    C2]  ? mark_usage (kernel/locking/lockdep.c:4674 (discriminator 1))
[   13.036979][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   13.037169][    C2]  ? remove_waiter (kernel/locking/rtmutex_common.h:146 kernel/locking/rtmutex.c:1575)
[   13.037365][    C2]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6671 (discriminator 2))
[   13.037571][    C2]  __netif_receive_skb_one_core (net/core/dev.c:6202)
[   13.037798][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:5870 (discriminator 2))
[   13.037992][    C2]  ? __netif_receive_skb_list_core (net/core/dev.c:6202)
[   13.038219][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   13.038421][    C2]  process_backlog (./include/linux/rcupdate.h:867 net/core/dev.c:6674)
[   13.038629][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:5870 (discriminator 2))
[   13.038821][    C2]  __napi_poll (net/core/dev.c:7737)
[   13.038978][    C2]  net_rx_action (net/core/dev.c:7800 net/core/dev.c:7957)
[   13.039171][    C2]  ? __napi_poll (net/core/dev.c:7919)
[   13.039374][    C2]  ? reacquire_held_locks (kernel/locking/lockdep.c:238 (discriminator 12) kernel/locking/lockdep.c:227 (discriminator 12) kernel/locking/lockdep.c:5386 (discriminator 12))
[   13.039579][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[   13.039774][    C2]  ? 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)
[   13.039964][    C2]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:179 (discriminator 4) kernel/locking/spinlock.c:198 (discriminator 4))
[   13.040190][    C2]  ? __run_timers (kernel/time/timer.c:2402)
[   13.040387][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[   13.040590][    C2]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[   13.040781][    C2]  ? _local_bh_enable (kernel/softirq.c:580)
[   13.040967][    C2]  ? _local_bh_enable (kernel/softirq.c:580)
[   13.041157][    C2]  do_softirq (kernel/softirq.c:523 (discriminator 19) kernel/softirq.c:510 (discriminator 19))
[   13.041314][    C2]  </IRQ>
[   13.041445][    C2]  <TASK>
[   13.041562][    C2]  __local_bh_enable_ip (kernel/softirq.c:450)
[   13.041750][    C2]  __alloc_skb (net/core/skbuff.c:700)
[   13.041938][    C2]  ? __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:695 (discriminator 2))
[   13.042123][    C2]  ? napi_skb_cache_get (net/core/skbuff.c:674)
[   13.042323][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 3) kernel/locking/lockdep.c:3821 (discriminator 3) kernel/locking/lockdep.c:3876 (discriminator 3))
[   13.042520][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   13.042711][    C2]  mld_newpack (./include/linux/skbuff.h:1383 net/ipv6/mcast.c:1775)
[   13.042904][    C2]  ? mld_sendpack (net/ipv6/mcast.c:1757)
[   13.043094][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:5870 (discriminator 2))
[   13.043287][    C2]  ? mld_ifc_work (net/ipv6/mcast.c:2693)
[   13.043487][    C2]  ? add_grhead (./include/linux/skbuff.h:3086 (discriminator 4) ./include/linux/igmp.h:29 (discriminator 4) net/ipv4/igmp.c:455 (discriminator 4))
[   13.043678][    C2]  add_grhead (./include/linux/skbuff.h:3086 (discriminator 4) ./include/linux/igmp.h:29 (discriminator 4) net/ipv4/igmp.c:455 (discriminator 4))
[   13.043834][    C2]  add_grec (./include/linux/skbuff.h:2929 net/ipv4/igmp.c:501)
[   13.043986][    C2]  ? mld_ifc_work (net/ipv6/mcast.c:2693)
[   13.044174][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 3) kernel/locking/lockdep.c:3821 (discriminator 3) kernel/locking/lockdep.c:3876 (discriminator 3))
[   13.044366][    C2]  ? ww_mutex_lock (kernel/locking/mutex.c:805)
[   13.044568][    C2]  ? add_grhead (net/ipv4/igmp.c:465)
[   13.044769][    C2]  mld_send_cr (net/ipv6/mcast.c:2149)
[   13.044959][    C2]  ? mld_ifc_work (net/ipv6/mcast.c:2693)
[   13.045149][    C2]  mld_ifc_work (net/ipv6/mcast.c:2695)
[   13.045348][    C2]  ? process_one_work (kernel/workqueue.c:3264 (discriminator 2))
[   13.045552][    C2]  process_one_work (kernel/workqueue.c:3293)
[   13.045852][    C2]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:3189)
[   13.046053][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:5870 (discriminator 2))
[   13.046248][    C2]  worker_thread (kernel/workqueue.c:3365 (discriminator 5) kernel/workqueue.c:3452 (discriminator 5))
[   13.046452][    C2]  ? rescuer_thread (kernel/workqueue.c:3398)
[   13.046641][    C2]  ? __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:272 (discriminator 1))
[   13.046827][    C2]  ? rescuer_thread (kernel/workqueue.c:3398)
[   13.047011][    C2]  kthread (kernel/kthread.c:436)
[   13.047161][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 24))
[   13.047387][    C2]  ? kthread_affine_node (kernel/kthread.c:381)
[   13.047586][    C2]  ret_from_fork (arch/x86/kernel/process.c:164)
[   13.047773][    C2]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   13.047997][    C2]  ? __switch_to (./arch/x86/include/asm/cpufeature.h:101 (discriminator 1) arch/x86/kernel/process_64.c:377 (discriminator 1) arch/x86/kernel/process_64.c:665 (discriminator 1))
[   13.048182][    C2]  ? kthread_affine_node (kernel/kthread.c:381)


Finger prints:
__udp6_lib_err_encap:udpv6_err:icmpv6_notify:icmpv6_rcv:ip6_protocol_deliver_rcu