IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE
IPv6: NLM_F_CREATE should be set when creating new route
IPv6: NLM_F_CREATE should be set when creating new route
------------[ cut here ]------------
WARNING: CPU: 0 PID: 12255 at drivers/net/netdevsim/fib.c:831 nsim_fib_event_nb+0xed8/0x1080
Modules linked in:
CPU: 0 UID: 0 PID: 12255 Comm: syz.2.1659 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 65 b5 a7 fa be 01 00 00 00 4c 89 f7 e8 b8 8c b0 fd 4c 8b 64 24 08 e9 91 f4 ff ff e8 49 b5 a7 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:ffffc90007c9ef08 EFLAGS: 00010293
RAX: ffffffff8717f847 RBX: 0000000000000002 RCX: ffff888037f69cc0
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001
RBP: dffffc0000000000 R08: ffff8880392a8c2f R09: 1ffff11007255185
R10: dffffc0000000000 R11: ffffed1007255186 R12: ffff88803b9ac000
R13: ffffc90007c9f080 R14: 0000000000000001 R15: ffffc90007c9f098
FS:  00007fa1d72886c0(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000038e44000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 notifier_call_chain+0x1b6/0x3e0
 atomic_notifier_call_chain+0xda/0x180
 call_fib_notifiers+0x31/0x60
 call_fib6_multipath_entry_notifiers+0xe6/0x150
 inet6_rtm_newroute+0x12f5/0x18c0
 rtnetlink_rcv_msg+0x7cf/0xb70
 netlink_rcv_skb+0x208/0x470
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x52d/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __sys_sendmmsg+0x227/0x430
 __x64_sys_sendmmsg+0xa0/0xc0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa1d638ec29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa1d7288038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fa1d65d5fa0 RCX: 00007fa1d638ec29
RDX: 040000000000009f RSI: 00002000000002c0 RDI: 000000000000000b
RBP: 00007fa1d6411e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa1d65d6038 R14: 00007fa1d65d5fa0 R15: 00007ffe6db63448
 </TASK>
