======================================
| [  596.390248][ T4071] veth2: entered allmulticast mode
| [  596.391239][ T4071] veth3: entered allmulticast mode
| [  622.338242][ T4267] Oops: general protection fault, probably for non-canonical address 0xfbd59c0000000024: 0000 [#1] PREEMPT SMP KASAN NOPTI
| [  622.338635][ T4267] KASAN: maybe wild-memory-access in range [0xdead000000000120-0xdead000000000127]
[  622.339085][ T4267] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 622.339393][ T4267] RIP: 0010:neigh_flush_dev.isra.0 (./include/linux/list.h:988 ./include/linux/rculist.h:516 net/core/neighbour.c:384) 
[ 622.339580][ T4267] Code: 0f 85 ef 04 00 00 49 8d 7f 08 49 8b 1f 48 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 cc 04 00 00 49 8b 6f 08 48 89 e8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 19 05 00 00 48 89 5d 00 48 85 db 74 1a 48 8d
All code
========
   0:	0f 85 ef 04 00 00    	jne    0x4f5
   6:	49 8d 7f 08          	lea    0x8(%r15),%rdi
   a:	49 8b 1f             	mov    (%r15),%rbx
   d:	48 89 f8             	mov    %rdi,%rax
  10:	48 c1 e8 03          	shr    $0x3,%rax
  14:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  19:	0f 85 cc 04 00 00    	jne    0x4eb
  1f:	49 8b 6f 08          	mov    0x8(%r15),%rbp
  23:	48 89 e8             	mov    %rbp,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
  2a:*	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)		<-- trapping instruction
  2f:	0f 85 19 05 00 00    	jne    0x54e
  35:	48 89 5d 00          	mov    %rbx,0x0(%rbp)
  39:	48 85 db             	test   %rbx,%rbx
  3c:	74 1a                	je     0x58
  3e:	48                   	rex.W
  3f:	8d                   	.byte 0x8d

Code starting with the faulting instruction
===========================================
   0:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
   5:	0f 85 19 05 00 00    	jne    0x524
   b:	48 89 5d 00          	mov    %rbx,0x0(%rbp)
   f:	48 85 db             	test   %rbx,%rbx
  12:	74 1a                	je     0x2e
  14:	48                   	rex.W
  15:	8d                   	.byte 0x8d
[  622.340047][ T4267] RSP: 0018:ffffc90007edf388 EFLAGS: 00010a06
[  622.340214][ T4267] RAX: 1bd5a00000000024 RBX: 0000000000000000 RCX: 0000000000000000
[  622.340485][ T4267] RDX: 1ffff11000ab6399 RSI: ffff8880055b1000 RDI: ffff8880075b7008
[  622.340721][ T4267] RBP: dead000000000122 R08: ffff8880075b7000 R09: fffff52000fdbe72
[  622.340990][ T4267] R10: 0000000000000003 R11: ffffc90007ededc1 R12: ffff8880075b713c
[  622.341279][ T4267] R13: dffffc0000000000 R14: ffff8880055b1000 R15: ffff8880075b7000
[  622.341593][ T4267] FS:  00007f902c948800(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  622.341980][ T4267] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  622.342237][ T4267] CR2: 00000000004e2a90 CR3: 0000000007704002 CR4: 0000000000772ef0
[  622.342495][ T4267] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  622.342812][ T4267] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  622.343127][ T4267] PKRU: 55555554
[  622.343302][ T4267] Call Trace:
[  622.343463][ T4267]  <TASK>
[ 622.343580][ T4267] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460) 
[ 622.343743][ T4267] ? exc_general_protection (arch/x86/kernel/traps.c:751 arch/x86/kernel/traps.c:693) 
[ 622.343952][ T4267] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:617) 
[ 622.344167][ T4267] ? neigh_flush_dev.isra.0 (./include/linux/list.h:988 ./include/linux/rculist.h:516 net/core/neighbour.c:384) 
[ 622.344378][ T4267] ? __pfx_do_raw_write_lock (kernel/locking/spinlock_debug.c:209) 
[ 622.344587][ T4267] ? lock_acquire (kernel/locking/lockdep.c:5798) 
[ 622.344796][ T4267] __neigh_ifdown.isra.0 (net/core/neighbour.c:826 net/core/neighbour.c:426) 
[ 622.345017][ T4267] ? blocking_notifier_call_chain (kernel/notifier.c:388 kernel/notifier.c:376) 
[ 622.345286][ T4267] neigh_ifdown (net/core/neighbour.c:445) 
[ 622.345444][ T4267] fib_inetaddr_event (net/ipv4/fib_frontend.c:1431 net/ipv4/fib_frontend.c:1455) 
[ 622.345687][ T4267] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) 
[ 622.345911][ T4267] blocking_notifier_call_chain (kernel/notifier.c:389 kernel/notifier.c:376) 
[ 622.346144][ T4267] __inet_del_ifa (net/ipv4/devinet.c:488) 
[ 622.346358][ T4267] inet_rtm_deladdr (net/ipv4/devinet.c:706) 
[ 622.346570][ T4267] ? __pfx_inet_rtm_deladdr (net/ipv4/devinet.c:665) 
[ 622.346793][ T4267] rtnetlink_rcv_msg (net/core/rtnetlink.c:6721) 
[ 622.347006][ T4267] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6615) 
[ 622.347211][ T4267] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 622.347443][ T4267] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 622.347611][ T4267] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 622.347831][ T4267] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 622.348071][ T4267] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6615) 
[ 622.348295][ T4267] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 622.348542][ T4267] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 622.348770][ T4267] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 622.348981][ T4267] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 622.349223][ T4267] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 622.349441][ T4267] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 622.349665][ T4267] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 622.349892][ T4267] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 622.350107][ T4267] ? __might_fault (mm/memory.c:6700 mm/memory.c:6693) 
[ 622.350343][ T4267] ? __import_iovec (lib/iov_iter.c:1433 lib/iov_iter.c:1449) 
[ 622.350571][ T4267] ____sys_sendmsg (net/socket.c:729 net/socket.c:744 net/socket.c:2607) 
[ 622.350798][ T4267] ? __pfx_____sys_sendmsg (net/socket.c:2553) 
[ 622.351020][ T4267] ? __pfx_copy_msghdr_from_user (net/socket.c:2533) 
[ 622.351305][ T4267] ___sys_sendmsg (net/socket.c:2663) 
[ 622.351529][ T4267] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 622.351749][ T4267] ? __pfx____sys_sendmsg (net/socket.c:2650) 
[ 622.351985][ T4267] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 622.352198][ T4267] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4609) 
[ 622.352477][ T4267] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 622.352668][ T4267] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 622.352888][ T4267] ? __kasan_record_aux_stack (mm/kasan/generic.c:541) 
[ 622.353095][ T4267] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:87 ./arch/x86/include/asm/irqflags.h:123 kernel/rcu/tree.c:3087) 
[ 622.353265][ T4267] ? __x64_sys_close (fs/open.c:1568 fs/open.c:1550 fs/open.c:1550) 
[ 622.353399][ T4267] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 622.353551][ T4267] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 622.353721][ T4267] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 622.353859][ T4267] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 622.353994][ T4267] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 622.354130][ T4267] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) 
[ 622.354235][ T4267] __sys_sendmsg (./include/linux/file.h:35 net/socket.c:2692) 
[ 622.354370][ T4267] ? __pfx___sys_sendmsg (net/socket.c:2678) 
[ 622.354507][ T4267] ? __virt_addr_valid (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 ./include/linux/mmzone.h:2053 arch/x86/mm/physaddr.c:65) 
[ 622.354654][ T4267] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 622.354798][ T4267] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  622.354966][ T4267] RIP: 0033:0x7f902cb547b7
[ 622.355121][ T4267] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0a 00                	or     (%rax),%al
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[  622.355603][ T4267] RSP: 002b:00007ffdcd9c6d28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  622.355811][ T4267] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f902cb547b7
[  622.356018][ T4267] RDX: 0000000000000000 RSI: 00007ffdcd9c6d90 RDI: 0000000000000005
[  622.356222][ T4267] RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000078
[  622.356428][ T4267] R10: 00007f902ca12ef8 R11: 0000000000000246 R12: 00007ffdcd9c74e0


Finger prints:
neigh_ifdown:fib_inetaddr_event:notifier_call_chain:blocking_notifier_call_chain:__inet_del_ifa