======================================
| [   56.645943][  T562] veth0: renamed from veth-rt-1
| [   56.893887][  T571] veth0: renamed from veth-rt-2
| [   87.369333][   T64] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN
| [   87.369544][   T64] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
[   87.369785][   T64] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   87.369878][   T64] Workqueue: mld mld_ifc_work
[   87.369960][   T64] RIP: 0010:mroute6_is_socket (net/ipv6/ip6mr.c:1686 (discriminator 4))
[   87.370038][   T64] Code: df 48 89 f9 48 c1 e9 03 80 3c 11 00 75 2f 48 8b 80 e8 10 00 00 48 ba 00 00 00 00 00 fc ff df 48 8d 78 30 48 89 f9 48 c1 e9 03 <80> 3c 11 00 75 1c 48 83 78 30 00 0f 95 c0 48 83 c4 08 c3 48 89 04
All code
========
   0:	df 48 89             	fisttps -0x77(%rax)
   3:	f9                   	stc
   4:	48 c1 e9 03          	shr    $0x3,%rcx
   8:	80 3c 11 00          	cmpb   $0x0,(%rcx,%rdx,1)
   c:	75 2f                	jne    0x3d
   e:	48 8b 80 e8 10 00 00 	mov    0x10e8(%rax),%rax
  15:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  1c:	fc ff df 
  1f:	48 8d 78 30          	lea    0x30(%rax),%rdi
  23:	48 89 f9             	mov    %rdi,%rcx
  26:	48 c1 e9 03          	shr    $0x3,%rcx
  2a:*	80 3c 11 00          	cmpb   $0x0,(%rcx,%rdx,1)		<-- trapping instruction
  2e:	75 1c                	jne    0x4c
  30:	48 83 78 30 00       	cmpq   $0x0,0x30(%rax)
  35:	0f 95 c0             	setne  %al
  38:	48 83 c4 08          	add    $0x8,%rsp
  3c:	c3                   	ret
  3d:	48                   	rex.W
  3e:	89                   	.byte 0x89
  3f:	04                   	.byte 0x4

Code starting with the faulting instruction
===========================================
   0:	80 3c 11 00          	cmpb   $0x0,(%rcx,%rdx,1)
   4:	75 1c                	jne    0x22
   6:	48 83 78 30 00       	cmpq   $0x0,0x30(%rax)
   b:	0f 95 c0             	setne  %al
   e:	48 83 c4 08          	add    $0x8,%rsp
  12:	c3                   	ret
  13:	48                   	rex.W
  14:	89                   	.byte 0x89
  15:	04                   	.byte 0x4
[   87.370292][   T64] RSP: 0018:ffa00000004578b0 EFLAGS: 00010216
[   87.370384][   T64] RAX: 0000000000000000 RBX: ff11000012725c40 RCX: 0000000000000006
[   87.370489][   T64] RDX: dffffc0000000000 RSI: ff11000012725c40 RDI: 0000000000000030
[   87.370599][   T64] RBP: ff1100000fcf7c40 R08: ffffffffa75b8550 R09: 1fe2200001225d75
[   87.370705][   T64] R10: ff11000005f90828 R11: ff110000093c90b0 R12: 1ff400000008af20
[   87.370814][   T64] R13: ff110000093c9000 R14: ff1100000d940800 R15: ff11000005f90810
[   87.370925][   T64] FS:  0000000000000000(0000) GS:ff110000c3be4000(0000) knlGS:0000000000000000
[   87.371051][   T64] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   87.371141][   T64] CR2: 00007fe284c51668 CR3: 000000006af4f002 CR4: 0000000000771ef0
[   87.371249][   T64] PKRU: 55555554
[   87.371303][   T64] Call Trace:
[   87.371358][   T64]  <TASK>
[   87.371396][   T64]  ip6_finish_output2 (net/ipv6/ip6_output.c:84 (discriminator 3))
[   87.371470][   T64]  ? ip6_xmit (net/ipv6/ip6_output.c:61)
[   87.371540][   T64]  ? find_held_lock (kernel/locking/lockdep.c:5350 (discriminator 1))
[   87.371614][   T64]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[   87.371685][   T64]  ? ip6_mtu (./include/linux/rcupdate.h:322 (discriminator 2) ./include/linux/rcupdate.h:881 (discriminator 2) ./include/net/ip6_route.h:382 (discriminator 2) net/ipv6/route.c:3281 (discriminator 2))
[   87.371744][   T64]  ip6_finish_output (net/ipv6/ip6_output.c:208 net/ipv6/ip6_output.c:219)
[   87.371814][   T64]  ip6_output (./include/linux/netfilter.h:307 net/ipv6/ip6_output.c:246)
[   87.371869][   T64]  ? ip6_finish_output (net/ipv6/ip6_output.c:227)
[   87.371941][   T64]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[   87.372012][   T64]  ? xfrm_bundle_lookup.constprop.0 (net/xfrm/xfrm_policy.c:3177)
[   87.372102][   T64]  ? mark_held_locks (kernel/locking/lockdep.c:4325 (discriminator 1))
[   87.372173][   T64]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   87.372245][   T64]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   87.372315][   T64]  ? icmp6_dst_alloc (net/ipv6/route.c:3357 (discriminator 1))
[   87.372386][   T64]  mld_sendpack (./include/linux/netfilter.h:319 ./include/linux/netfilter.h:312 net/ipv6/mcast.c:1855)
[   87.372458][   T64]  ? nf_hook.constprop.0 (net/ipv4/ip_forward.c:66)
[   87.372529][   T64]  ? mld_send_cr (net/ipv6/mcast.c:2131 (discriminator 14))
[   87.372604][   T64]  mld_ifc_work (net/ipv6/mcast.c:2695)
[   87.372676][   T64]  ? process_one_work (kernel/workqueue.c:3252 (discriminator 2))
[   87.372752][   T64]  process_one_work (kernel/workqueue.c:3281)
[   87.372826][   T64]  ? pwq_dec_nr_in_flight (kernel/workqueue.c:3177)
[   87.372897][   T64]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:5870 (discriminator 2))
[   87.372968][   T64]  worker_thread (kernel/workqueue.c:3353 (discriminator 5) kernel/workqueue.c:3440 (discriminator 5))
[   87.373039][   T64]  ? rescuer_thread (kernel/workqueue.c:3386)
[   87.373112][   T64]  ? __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))
[   87.373183][   T64]  ? rescuer_thread (kernel/workqueue.c:3386)
[   87.373254][   T64]  kthread (kernel/kthread.c:436)
[   87.373307][   T64]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 24))
[   87.373399][   T64]  ? kthread_affine_node (kernel/kthread.c:381)
[   87.373470][   T64]  ret_from_fork (arch/x86/kernel/process.c:164)
[   87.373541][   T64]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/syscall_64.c:37)
[   87.373631][   T64]  ? __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))
[   87.373704][   T64]  ? kthread_affine_node (kernel/kthread.c:381)


Finger prints:
mroute6_is_socket:ip6_finish_output2:ip6_finish_output:ip6_output:mld_sendpack