bond1: entered promiscuous mode
bond1: entered allmulticast mode
8021q: adding VLAN 0 to HW filter on device bond1
------------[ cut here ]------------
WARNING: drivers/net/netdevsim/fib.c:831 at nsim_fib_event_nb+0xed8/0x1080, CPU#0: syz.3.1573/11803
Modules linked in:
CPU: 0 UID: 0 PID: 11803 Comm: syz.3.1573 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:nsim_fib_event_nb+0xed8/0x1080
Code: fa be 02 00 00 00 eb 0a e8 c5 2d c9 fa be 01 00 00 00 4c 89 f7 e8 38 f4 9e fd 4c 8b 64 24 08 e9 91 f4 ff ff e8 a9 2d c9 fa 90 <0f> 0b 90 e9 70 fb ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 35
RSP: 0018:ffffc9000292eea8 EFLAGS: 00010283
RAX: ffffffff86f94627 RBX: 0000000000000001 RCX: 0000000000080000
RDX: ffffc9002941f000 RSI: 0000000000000529 RDI: 000000000000052a
RBP: dffffc0000000000 R08: ffff88810b92e02f R09: 1ffff11021725c05
R10: dffffc0000000000 R11: ffffed1021725c06 R12: ffff8881bb445000
R13: ffffc9000292f020 R14: 0000000000000000 R15: ffffc9000292f038
FS:  00007f651d0906c0(0000) GS:ffff88818e408000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f651d08fff8 CR3: 0000000113200000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 notifier_call_chain+0x19d/0x3a0
 atomic_notifier_call_chain+0xda/0x180
 call_fib_notifiers+0x31/0x60
 call_fib6_multipath_entry_notifiers+0xf5/0x160
 inet6_rtm_newroute+0x14a2/0x19e0
 rtnetlink_rcv_msg+0x7d5/0xbe0
 netlink_rcv_skb+0x232/0x4b0
 netlink_unicast+0x80f/0x9b0
 netlink_sendmsg+0x813/0xb40
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x500/0x810
 ___sys_sendmsg+0x2a5/0x360
 __sys_sendmmsg+0x27c/0x4e0
 __x64_sys_sendmmsg+0xa0/0xc0
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f651c19acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f651d090028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f651c415fa0 RCX: 00007f651c19acb9
RDX: 0400000000000235 RSI: 0000200000000000 RDI: 0000000000000006
RBP: 00007f651c208bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f651c416038 R14: 00007f651c415fa0 R15: 00007ffcf47749e8
 </TASK>
