------------[ cut here ]------------ WARNING: CPU: 1 PID: 8431 at net/ipv4/route.c:1241 ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1241 Modules linked in: CPU: 1 UID: 0 PID: 8431 Comm: syz.1.671 Not tainted 6.11.0-rc2-syzkaller-00277-g600a91931057 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:ip_rt_bug+0x2c/0x110 net/ipv4/route.c:1241 Code: 1e fa 41 57 41 56 41 55 41 54 53 48 89 d3 e8 8b 89 82 f7 66 90 e8 84 89 82 f7 31 ff 48 89 de ba 02 00 00 00 e8 25 a6 6b ff 90 <0f> 0b 90 31 c0 5b 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc f3 0f 1e RSP: 0018:ffffc90009ace900 EFLAGS: 00010282 RAX: e278daf12dea7d00 RBX: ffff888068bddb40 RCX: ffffffff81702eca RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c6060c0 RBP: 0000000000000001 R08: ffffffff9372e89f R09: 1ffffffff26e5d13 R10: dffffc0000000000 R11: fffffbfff26e5d14 R12: dffffc0000000000 R13: dffffc0000000000 R14: ffff888025253b80 R15: ffff888017b8a080 FS: 00007fc3227ff6c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020004cc0 CR3: 000000001e5d0000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip_local_out net/ipv4/ip_output.c:129 [inline] ip_send_skb net/ipv4/ip_output.c:1495 [inline] ip_push_pending_frames+0xbf/0x150 net/ipv4/ip_output.c:1515 __icmp_send+0xf89/0x14e0 net/ipv4/icmp.c:777 ipv4_send_dest_unreach net/ipv4/route.c:1221 [inline] ipv4_link_failure+0x62f/0xa10 net/ipv4/route.c:1228 dst_link_failure include/net/dst.h:429 [inline] vti_xmit net/ipv4/ip_vti.c:271 [inline] vti_tunnel_xmit+0xf42/0x1a60 net/ipv4/ip_vti.c:307 __netdev_start_xmit include/linux/netdevice.h:4881 [inline] netdev_start_xmit include/linux/netdevice.h:4890 [inline] xmit_one net/core/dev.c:3580 [inline] dev_hard_start_xmit+0x27a/0x7e0 net/core/dev.c:3596 __dev_queue_xmit+0x1b63/0x3e90 net/core/dev.c:4423 neigh_output include/net/neighbour.h:542 [inline] ip_finish_output2+0xe70/0x1390 net/ipv4/ip_output.c:235 ip_local_out net/ipv4/ip_output.c:129 [inline] __ip_queue_xmit+0x118c/0x1b80 net/ipv4/ip_output.c:535 sctp_packet_transmit+0x26af/0x2ca0 net/sctp/output.c:653 sctp_packet_singleton+0x22c/0x320 net/sctp/outqueue.c:783 sctp_outq_flush_ctrl net/sctp/outqueue.c:914 [inline] sctp_outq_flush+0x6d5/0x3e20 net/sctp/outqueue.c:1212 sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline] sctp_do_sm+0x59cc/0x60c0 net/sctp/sm_sideeffect.c:1169 sctp_primitive_ASSOCIATE+0x95/0xc0 net/sctp/primitive.c:73 __sctp_connect+0x9cd/0xe30 net/sctp/socket.c:1234 sctp_connect net/sctp/socket.c:4819 [inline] sctp_inet_connect+0x149/0x1f0 net/sctp/socket.c:4834 __sys_connect_file net/socket.c:2061 [inline] __sys_connect+0x2df/0x310 net/socket.c:2078 __do_sys_connect net/socket.c:2088 [inline] __se_sys_connect net/socket.c:2085 [inline] __x64_sys_connect+0x7a/0x90 net/socket.c:2085 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc322d779f9 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:00007fc3227ff038 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007fc322f06058 RCX: 00007fc322d779f9 RDX: 0000000000000010 RSI: 0000000020004cc0 RDI: 0000000000000008 RBP: 00007fc322de58ee R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fc322f06058 R15: 00007ffe338af3d8