netlink: 40 bytes leftover after parsing attributes in process `syz-executor.1'. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 19330 at net/ipv4/route.c:1252 ip_rt_bug+0x25/0x130 net/ipv4/route.c:1251 Modules linked in: CPU: 0 PID: 19330 Comm: syz-executor.1 Not tainted 5.11.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ip_rt_bug+0x25/0x130 net/ipv4/route.c:1252 Code: 0f 1f 44 00 00 55 48 89 d5 53 48 83 ec 08 e8 a2 be 05 fa 0f 1f 44 00 00 e8 98 be 05 fa e8 93 be 05 fa 48 89 ef e8 6b fd 83 ff <0f> 0b 48 83 c4 08 31 c0 5b 5d c3 e8 7b be 05 fa 48 8d 7d 10 48 b8 RSP: 0018:ffffc90002996fc0 EFLAGS: 00010202 RAX: 0000000000009f30 RBX: ffff88805c8b0000 RCX: ffffc9000ac53000 RDX: 0000000000040000 RSI: ffffffff876d09f5 RDI: 0000000000000000 RBP: ffff888070397280 R08: 0000000000000001 R09: ffffffff8ed3082f R10: fffffbfff1da6105 R11: 0000000000000000 R12: ffff888091d18700 R13: ffff888070397280 R14: 0000000000000000 R15: ffff8880703972d8 FS: 00007f08dd684700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000032c7a58 CR3: 000000009484f000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dst_output include/net/dst.h:441 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] ip_send_skb net/ipv4/ip_output.c:1567 [inline] ip_push_pending_frames+0x125/0x2b0 net/ipv4/ip_output.c:1587 icmp_push_reply+0x351/0x4a0 net/ipv4/icmp.c:393 __icmp_send+0xb9b/0x1390 net/ipv4/icmp.c:762 icmp_send include/net/icmp.h:43 [inline] icmp_ndo_send+0xb0/0x4e0 net/ipv4/icmp.c:784 wg_xmit+0xb5b/0xfb0 drivers/net/wireguard/device.c:207 __netdev_start_xmit include/linux/netdevice.h:4758 [inline] netdev_start_xmit include/linux/netdevice.h:4772 [inline] xmit_one net/core/dev.c:3574 [inline] dev_hard_start_xmit+0x1eb/0x920 net/core/dev.c:3590 __dev_queue_xmit+0x21db/0x2dd0 net/core/dev.c:4151 neigh_connected_output+0x380/0x4c0 net/core/neighbour.c:1520 neigh_output include/net/neighbour.h:510 [inline] ip_finish_output2+0x83d/0x21b0 net/ipv4/ip_output.c:230 __ip_finish_output net/ipv4/ip_output.c:308 [inline] __ip_finish_output+0x396/0x640 net/ipv4/ip_output.c:290 ip_finish_output+0x35/0x200 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:290 [inline] ip_output+0x196/0x310 net/ipv4/ip_output.c:432 dst_output include/net/dst.h:441 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] raw_send_hdrinc net/ipv4/raw.c:429 [inline] raw_sendmsg+0x1d20/0x2d40 net/ipv4/raw.c:660 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:817 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2345 ___sys_sendmsg+0xf3/0x170 net/socket.c:2399 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2432 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 Code: 0d b4 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f08dd683c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000020000b00 RDI: 0000000000000003 RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007fffe10d841f R14: 00007f08dd6849c0 R15: 000000000119bf8c