======================================
| xx__-> [   19.863430][  T394] ip (394) used greatest stack depth: 23472 bytes left
| [   20.453991][    C2] ------------[ cut here ]------------
| [   20.454265][    C2] WARNING: ./include/linux/skbuff.h:3239 at __udp4_lib_err_encap+0x69a/0xad0, CPU#2: 2/66
| [   20.454714][    C2] Modules linked in: vxlan nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables
[   20.455406][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.455645][    C2] Workqueue: mld mld_ifc_work
[   20.455838][    C2] RIP: 0010:__udp4_lib_err_encap (./include/linux/skbuff.h:3239 (discriminator 3) ./include/linux/skbuff.h:3235 (discriminator 3) net/ipv4/udp.c:864 (discriminator 3))
[   20.456062][    C2] Code: 84 02 00 00 0f b6 2e 83 e5 0f 90 0f 0b 90 e9 ef fa ff ff 90 0f 0b 90 90 0f 0b 90 e9 bd fc ff ff 90 0f 0b 90 e9 57 fa ff ff 90 <0f> 0b 90 e9 65 fa ff ff 4c 8b 74 24 20 4c 8b 6c 24 28 4d 89 fa 45
All code
========
   0:	84 02                	test   %al,(%rdx)
   2:	00 00                	add    %al,(%rax)
   4:	0f b6 2e             	movzbl (%rsi),%ebp
   7:	83 e5 0f             	and    $0xf,%ebp
   a:	90                   	nop
   b:	0f 0b                	ud2
   d:	90                   	nop
   e:	e9 ef fa ff ff       	jmp    0xfffffffffffffb02
  13:	90                   	nop
  14:	0f 0b                	ud2
  16:	90                   	nop
  17:	90                   	nop
  18:	0f 0b                	ud2
  1a:	90                   	nop
  1b:	e9 bd fc ff ff       	jmp    0xfffffffffffffcdd
  20:	90                   	nop
  21:	0f 0b                	ud2
  23:	90                   	nop
  24:	e9 57 fa ff ff       	jmp    0xfffffffffffffa80
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 65 fa ff ff       	jmp    0xfffffffffffffa97
  32:	4c 8b 74 24 20       	mov    0x20(%rsp),%r14
  37:	4c 8b 6c 24 28       	mov    0x28(%rsp),%r13
  3c:	4d 89 fa             	mov    %r15,%r10
  3f:	45                   	rex.RB

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 65 fa ff ff       	jmp    0xfffffffffffffa6d
   8:	4c 8b 74 24 20       	mov    0x20(%rsp),%r14
   d:	4c 8b 6c 24 28       	mov    0x28(%rsp),%r13
  12:	4d 89 fa             	mov    %r15,%r10
  15:	45                   	rex.RB
[   20.456613][    C2] RSP: 0018:ffa0000000228868 EFLAGS: 00010293
[   20.456832][    C2] RAX: ff110000098f83e4 RBX: ff110000059c1a80 RCX: 0000000000000000
[   20.457088][    C2] RDX: ff110000098f8400 RSI: ff110000098f83ec RDI: fffffffffffffff8
[   20.457335][    C2] RBP: ff110000098f83c0 R08: ff110000098f83ec R09: 0000000000000000
[   20.457602][    C2] R10: ff110000059c1b38 R11: 0000000000000001 R12: 0000000000000000
[   20.457855][    C2] R13: ff110000059c1b48 R14: ff110000059c1b36 R15: ff1100000e85dd40
[   20.458108][    C2] FS:  0000000000000000(0000) GS:ff110000ce7d4000(0000) knlGS:0000000000000000
[   20.458398][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.458634][    C2] CR2: 00007f21c09ea574 CR3: 0000000029d4e001 CR4: 0000000000771ef0
[   20.458891][    C2] PKRU: 55555554
[   20.459041][    C2] Call Trace:
[   20.459199][    C2]  <IRQ>
[   20.459316][    C2]  udp_err (net/ipv4/udp.c:933)
[   20.459474][    C2]  icmp_unreach (net/ipv4/icmp.c:1196)
[   20.459667][    C2]  ? __skb_checksum_complete (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/linux/refcount.h:170 ./include/linux/skbuff.h:2112 net/core/skbuff.c:3785)
[   20.459851][    C2]  icmp_rcv (net/ipv4/icmp.c:1525 (discriminator 1))
[   20.460002][    C2]  ip_protocol_deliver_rcu (net/ipv4/ip_input.c:209)
[   20.460188][    C2]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6671 (discriminator 2))
[   20.460369][    C2]  ip_local_deliver_finish (./include/linux/rcupdate.h:867 net/ipv4/ip_input.c:242)
[   20.460569][    C2]  ip_local_deliver (net/ipv4/ip_input.c:259)
[   20.460752][    C2]  ? ip_local_deliver_finish (net/ipv4/ip_input.c:251)
[   20.460935][    C2]  ? ip_rcv_finish_core (net/ipv4/ip_input.c:409 (discriminator 1))
[   20.461114][    C2]  ? do_xdp_generic (net/core/dev.c:5979)
[   20.461297][    C2]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6671 (discriminator 2))
[   20.461488][    C2]  ip_rcv (./include/linux/netfilter.h:318 ./include/linux/netfilter.h:312 net/ipv4/ip_input.c:612)
[   20.461648][    C2]  ? ip_local_deliver (net/ipv4/ip_input.c:605)
[   20.461830][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 3) kernel/locking/lockdep.c:3821 (discriminator 3) kernel/locking/lockdep.c:3876 (discriminator 3))
[   20.462013][    C2]  ? mark_usage (kernel/locking/lockdep.c:4674 (discriminator 1))
[   20.462195][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.462378][    C2]  __netif_receive_skb_one_core (net/core/dev.c:6202)
[   20.462612][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:5870 (discriminator 2))
[   20.462799][    C2]  ? __netif_receive_skb_list_core (net/core/dev.c:6202)
[   20.463014][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   20.463201][    C2]  process_backlog (./include/linux/rcupdate.h:867 net/core/dev.c:6674)
[   20.463385][    C2]  __napi_poll (net/core/dev.c:7737)
[   20.463554][    C2]  net_rx_action (net/core/dev.c:7800 net/core/dev.c:7957)
[   20.463737][    C2]  ? __napi_poll (net/core/dev.c:7919)
[   20.463919][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[   20.464106][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:114)
[   20.464323][    C2]  ? __run_timers (kernel/time/timer.c:2402)
[   20.464524][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   20.464706][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[   20.464888][    C2]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[   20.465071][    C2]  ? _local_bh_enable (kernel/softirq.c:580)
[   20.465252][    C2]  ? _local_bh_enable (kernel/softirq.c:580)
[   20.465442][    C2]  do_softirq (kernel/softirq.c:523 (discriminator 19) kernel/softirq.c:510 (discriminator 19))
[   20.465606][    C2]  </IRQ>
[   20.465747][    C2]  <TASK>
[   20.465857][    C2]  ? __dev_queue_xmit (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:909 (discriminator 2) net/core/dev.c:4905 (discriminator 2))
[   20.466039][    C2]  __local_bh_enable_ip (kernel/softirq.c:450)
[   20.466222][    C2]  __dev_queue_xmit (net/core/dev.c:4906)
[   20.466404][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.466609][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   20.466792][    C2]  ? netdev_core_pick_tx (net/core/dev.c:4767)
[   20.466977][    C2]  ? __asan_memcpy (mm/kasan/shadow.c:105 (discriminator 3))
[   20.467173][    C2]  ? eth_header (net/ethernet/eth.c:100)
[   20.467357][    C2]  ? neigh_resolve_output.part.0 (./include/linux/netdevice.h:3458 net/core/neighbour.c:1614)
[   20.467593][    C2]  ip6_finish_output2 (net/ipv6/ip6_output.c:61)
[   20.467780][    C2]  ? ip6_xmit (net/ipv6/ip6_output.c:61)
[   20.467960][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   20.468143][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[   20.468328][    C2]  ? ip6_mtu (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/net/ip6_route.h:382 (discriminator 2) net/ipv6/route.c:3281 (discriminator 2))
[   20.468485][    C2]  ip6_finish_output (net/ipv6/ip6_output.c:208 net/ipv6/ip6_output.c:219)
[   20.468681][    C2]  ip6_output (./include/linux/netfilter.h:307 net/ipv6/ip6_output.c:246)
[   20.468859][    C2]  ? ip6_finish_output (net/ipv6/ip6_output.c:227)
[   20.469040][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[   20.469221][    C2]  ? xfrm_bundle_lookup.constprop.0 (net/xfrm/xfrm_policy.c:3177)
[   20.469444][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[   20.469639][    C2]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   20.469820][    C2]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   20.470002][    C2]  ? icmp6_dst_alloc (net/ipv6/route.c:3357 (discriminator 1))
[   20.470196][    C2]  mld_sendpack (./include/linux/netfilter.h:319 ./include/linux/netfilter.h:312 net/ipv6/mcast.c:1855)
[   20.470382][    C2]  ? nf_hook.constprop.0 (net/ipv4/ip_forward.c:66)
[   20.470587][    C2]  ? mld_send_cr (net/ipv6/mcast.c:2131 (discriminator 14))
[   20.470776][    C2]  mld_ifc_work (net/ipv6/mcast.c:2695)
[   20.470956][    C2]  ? process_one_work (kernel/workqueue.c:3264 (discriminator 2))
[   20.471136][    C2]  process_one_work (kernel/workqueue.c:3293)
[   20.471321][    C2]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:3189)
[   20.471504][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:5870 (discriminator 2))
[   20.471703][    C2]  worker_thread (kernel/workqueue.c:3365 (discriminator 5) kernel/workqueue.c:3452 (discriminator 5))
[   20.471886][    C2]  ? rescuer_thread (kernel/workqueue.c:3398)
[   20.472067][    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))
[   20.472252][    C2]  ? rescuer_thread (kernel/workqueue.c:3398)
[   20.472437][    C2]  kthread (kernel/kthread.c:436)
[   20.472596][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 24))
[   20.472811][    C2]  ? kthread_affine_node (kernel/kthread.c:381)
[   20.472999][    C2]  ret_from_fork (arch/x86/kernel/process.c:164)
[   20.473182][    C2]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   20.473401][    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))
[   20.473604][    C2]  ? kthread_affine_node (kernel/kthread.c:381)
[   20.473785][    C2]  ret_from_fork_asm (arch/x86/entry/entry_64.S:255)
| [   20.665093][    C2] ------------[ cut here ]------------
| [   20.665295][    C2] WARNING: ./include/linux/skbuff.h:3239 at __udp6_lib_err_encap+0x600/0x930, CPU#2: 2/66
| [   20.665634][    C2] Modules linked in: vxlan nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables
| [   20.666329][    C2] Tainted: [W]=WARN
[   20.666483][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   20.666712][    C2] Workqueue: mld mld_ifc_work
[   20.666903][    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))
[   20.667123][    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 ce fd ff ff 90 <0f> 0b 90 48 29 c5 48 89 e8 48 81 fd ff ff 00 00 0f 86 09 fb 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 ce fd ff ff       	jmp    0xfffffffffffffdf7
  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 09 fb ff ff    	jbe    0xfffffffffffffb49

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 09 fb ff ff    	jbe    0xfffffffffffffb1f
[   20.667663][    C2] RSP: 0018:ffa00000002286a8 EFLAGS: 00010293
[   20.667877][    C2] RAX: ff11000004a4e340 RBX: ff1100000cffb1c0 RCX: ff11000004a4e3b0
[   20.668124][    C2] RDX: ff11000004a4e380 RSI: ff11000004a4e388 RDI: fffffffffffffff8
[   20.668369][    C2] RBP: ff11000004a4e388 R08: 1fe22000019ff652 R09: ff1100000cffb1c0
[   20.668631][    C2] R10: ff1100000e85dd40 R11: 0000000000000004 R12: 0000000000000000
[   20.668875][    C2] R13: ff1100000cffb276 R14: ff1100000cffb288 R15: ff1100000cffb278
[   20.669123][    C2] FS:  0000000000000000(0000) GS:ff110000ce7d4000(0000) knlGS:0000000000000000
[   20.669402][    C2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.669632][    C2] CR2: 00007f864501c574 CR3: 0000000029d4e001 CR4: 0000000000771ef0
[   20.669879][    C2] PKRU: 55555554
[   20.670023][    C2] Call Trace:
[   20.670167][    C2]  <IRQ>
[   20.670283][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   20.670471][    C2]  udpv6_err (net/ipv6/udp.c:714)
[   20.670633][    C2]  ? __udp6_lib_err_encap (net/ipv6/udp.c:695)
[   20.670816][    C2]  icmpv6_notify (net/ipv6/icmp.c:1087)
[   20.670998][    C2]  ? icmpv6_param_prob_reason (net/ipv6/icmp.c:1039)
[   20.671177][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:5870 (discriminator 2))
[   20.671355][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   20.671555][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[   20.671738][    C2]  icmpv6_rcv (net/ipv6/icmp.c:1230)
[   20.671922][    C2]  ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:480)
[   20.672107][    C2]  ip6_input_finish (net/ipv6/ip6_input.c:532)
[   20.672286][    C2]  ip6_input (./include/linux/rcupdate.h:867 net/ipv6/ip6_input.c:543)
[   20.672438][    C2]  ? ip6_input_finish (net/ipv6/ip6_input.c:536)
[   20.672631][    C2]  ? ip6_rcv_core (./include/linux/skbuff.h:3395 net/ipv6/ip6_input.c:332)
[   20.672814][    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))
[   20.672964][    C2]  ? ip6_rcv_core (net/ipv6/ip6_input.c:345)
[   20.673143][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 3) kernel/locking/lockdep.c:3821 (discriminator 3) kernel/locking/lockdep.c:3876 (discriminator 3))
[   20.673323][    C2]  ? mark_usage (kernel/locking/lockdep.c:4674 (discriminator 1))
[   20.673503][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.673697][    C2]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6671 (discriminator 2))
[   20.673875][    C2]  __netif_receive_skb_one_core (net/core/dev.c:6202)
[   20.674089][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:5870 (discriminator 2))
[   20.674267][    C2]  ? __netif_receive_skb_list_core (net/core/dev.c:6202)
[   20.674488][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   20.674684][    C2]  process_backlog (./include/linux/rcupdate.h:867 net/core/dev.c:6674)
[   20.674869][    C2]  __napi_poll (net/core/dev.c:7737)
[   20.675016][    C2]  net_rx_action (net/core/dev.c:7800 net/core/dev.c:7957)
[   20.675201][    C2]  ? __napi_poll (net/core/dev.c:7919)
[   20.675386][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.675585][    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))
[   20.675773][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   20.675952][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[   20.676135][    C2]  handle_softirqs (./arch/x86/include/asm/jump_label.h:37 ./include/trace/events/irq.h:142 kernel/softirq.c:623)
[   20.676317][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   20.676503][    C2]  ? rcu_gp_kthread (kernel/rcu/tree_exp.h:750)
[   20.676696][    C2]  ? _local_bh_enable (kernel/softirq.c:580)
[   20.676877][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[   20.677059][    C2]  do_softirq (kernel/softirq.c:523 (discriminator 19) kernel/softirq.c:510 (discriminator 19))
[   20.677208][    C2]  </IRQ>
[   20.677323][    C2]  <TASK>
[   20.677441][    C2]  ? __dev_queue_xmit (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:909 (discriminator 2) net/core/dev.c:4905 (discriminator 2))
[   20.677635][    C2]  __local_bh_enable_ip (kernel/softirq.c:450)
[   20.677817][    C2]  __dev_queue_xmit (net/core/dev.c:4906)
[   20.677997][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   20.678177][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   20.678357][    C2]  ? netdev_core_pick_tx (net/core/dev.c:4767)
[   20.678559][    C2]  ? __asan_memcpy (mm/kasan/shadow.c:105 (discriminator 3))
[   20.678749][    C2]  ? eth_header (net/ethernet/eth.c:100)
[   20.678930][    C2]  ? neigh_resolve_output.part.0 (./include/linux/netdevice.h:3458 net/core/neighbour.c:1614)
[   20.679147][    C2]  ip6_finish_output2 (net/ipv6/ip6_output.c:61)
[   20.679331][    C2]  ? ip6_xmit (net/ipv6/ip6_output.c:61)
[   20.679527][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   20.679712][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[   20.679893][    C2]  ? ip6_mtu (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/net/ip6_route.h:382 (discriminator 2) net/ipv6/route.c:3281 (discriminator 2))
[   20.680046][    C2]  ip6_finish_output (net/ipv6/ip6_output.c:208 net/ipv6/ip6_output.c:219)
[   20.680228][    C2]  ip6_output (./include/linux/netfilter.h:307 net/ipv6/ip6_output.c:246)
[   20.680375][    C2]  ? ip6_finish_output (net/ipv6/ip6_output.c:227)
[   20.680574][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[   20.680755][    C2]  ? xfrm_bundle_lookup.constprop.0 (net/xfrm/xfrm_policy.c:3177)
[   20.680966][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[   20.681146][    C2]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   20.681327][    C2]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   20.681527][    C2]  ? icmp6_dst_alloc (net/ipv6/route.c:3357 (discriminator 1))
[   20.681710][    C2]  mld_sendpack (./include/linux/netfilter.h:319 ./include/linux/netfilter.h:312 net/ipv6/mcast.c:1855)
[   20.681891][    C2]  ? nf_hook.constprop.0 (net/ipv4/ip_forward.c:66)
[   20.682075][    C2]  ? mld_send_cr (net/ipv6/mcast.c:2131 (discriminator 14))
[   20.682258][    C2]  mld_ifc_work (net/ipv6/mcast.c:2695)
[   20.682444][    C2]  ? process_one_work (kernel/workqueue.c:3264 (discriminator 2))
[   20.682639][    C2]  process_one_work (kernel/workqueue.c:3293)
[   20.682825][    C2]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:3189)
[   20.683004][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:5870 (discriminator 2))
[   20.683188][    C2]  worker_thread (kernel/workqueue.c:3365 (discriminator 5) kernel/workqueue.c:3452 (discriminator 5))
[   20.683370][    C2]  ? rescuer_thread (kernel/workqueue.c:3398)
[   20.683568][    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))
[   20.683749][    C2]  ? rescuer_thread (kernel/workqueue.c:3398)
[   20.683930][    C2]  kthread (kernel/kthread.c:436)
[   20.684081][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 24))
[   20.684293][    C2]  ? kthread_affine_node (kernel/kthread.c:381)
[   20.684482][    C2]  ret_from_fork (arch/x86/kernel/process.c:164)
[   20.684678][    C2]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   20.684894][    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))
[   20.685075][    C2]  ? kthread_affine_node (kernel/kthread.c:381)


Finger prints:
__udp6_lib_err_encap:udpv6_err:icmpv6_notify:icmpv6_rcv:ip6_protocol_deliver_rcu
__udp4_lib_err_encap:udp_err:icmp_unreach:icmp_rcv:ip_protocol_deliver_rcu