IPv6: NLM_F_REPLACE set, but no existing node found!
WARNING: CPU: 0 PID: 1273 at net/ipv6/ip6_fib.c:1362 fib6_add+0x2dd8/0x36c0 net/ipv6/ip6_fib.c:1362
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 1273 Comm: syz-executor.5 Not tainted 5.1.0-rc5+ #147
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2cb/0x65c kernel/panic.c:214
 __warn.cold+0x20/0x45 kernel/panic.c:571
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:fib6_add+0x2dd8/0x36c0 net/ipv6/ip6_fib.c:1362
Code: df 48 8d bb 28 0d 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 10 07 00 00 48 8b 9b 28 0d 00 00 e9 ab fa ff ff e8 48 8b 55 fb <0f> 0b 48 8b 95 40 ff ff ff 48 b8 00 00 00 00 00 fc ff df 48 c1 ea
RSP: 0018:ffff88806c587410 EFLAGS: 00010216
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc9000804f000
RDX: 000000000000999a RSI: ffffffff861b0188 RDI: ffff888089981aa0
RBP: ffff88806c587560 R08: ffff88805f144240 R09: ffffed100ce7ed36
R10: ffffed100ce7ed35 R11: ffff8880673f69af R12: 00000000fffffffe
R13: ffff888098c227a0 R14: 0000000000000000 R15: ffff888098c22780
 __ip6_ins_rt+0x54/0x80 net/ipv6/route.c:1192
 ip6_route_add+0x5a/0xd0 net/ipv6/route.c:3232
 inet6_rtm_newroute+0x182/0x190 net/ipv6/route.c:4635
 rtnetlink_rcv_msg+0x465/0xb00 net/core/rtnetlink.c:5195
 netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2486
 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5213
 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
 netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1337
 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1926
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xdd/0x130 net/socket.c:661
 ___sys_sendmsg+0x806/0x930 net/socket.c:2279
 __sys_sendmsg+0x105/0x1d0 net/socket.c:2317
 __do_sys_sendmsg net/socket.c:2326 [inline]
 __se_sys_sendmsg net/socket.c:2324 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2324
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458c29
Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fd653e25c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29
RDX: 0000000000000000 RSI: 0000000020002fc8 RDI: 0000000000000003
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd653e266d4
R13: 00000000004c5e62 R14: 00000000004da658 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..