------------[ cut here ]------------ 1 WARNING: net/ipv4/route.c:1275 at ip_rt_bug+0x2d/0x140 net/ipv4/route.c:1275, CPU#1: syz.3.409/7736 Modules linked in: CPU: 1 UID: 0 PID: 7736 Comm: syz.3.409 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:ip_rt_bug+0x2d/0x140 net/ipv4/route.c:1275 Code: fa 55 41 57 41 56 41 55 41 54 53 48 89 d3 e8 0a a0 bb f7 66 90 e8 03 a0 bb f7 31 ff 48 89 de ba 02 00 00 00 e8 b4 61 6a ff 90 <0f> 0b 90 31 c0 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 49 RSP: 0018:ffffc90004346d58 EFLAGS: 00010292 RAX: b394fcb5f9737100 RBX: ffff8880327b9500 RCX: 0000000080000401 RDX: 0000000000000002 RSI: ffffffff8def2c90 RDI: ffffffff8c27ae00 RBP: 0000000000000001 R08: ffffffff90118cb7 R09: 1ffffffff2023196 R10: dffffc0000000000 R11: fffffbfff2023197 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff8880327b9500 R15: ffff88801bb2ad00 FS: 00007ff3994e46c0(0000) GS:ffff888125563000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc387c17dac CR3: 0000000078ad2000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: ip_local_out net/ipv4/ip_output.c:131 [inline] ip_send_skb net/ipv4/ip_output.c:1508 [inline] ip_push_pending_frames+0xbe/0x150 net/ipv4/ip_output.c:1528 __icmp_send+0x118d/0x1590 net/ipv4/icmp.c:1000 ipv4_send_dest_unreach net/ipv4/route.c:1255 [inline] ipv4_link_failure+0x66c/0xa70 net/ipv4/route.c:1262 dst_link_failure include/net/dst.h:438 [inline] xfrmi_xmit2 net/xfrm/xfrm_interface_core.c:519 [inline] xfrmi_xmit+0xac0/0x1cd0 net/xfrm/xfrm_interface_core.c:572 __netdev_start_xmit include/linux/netdevice.h:5275 [inline] netdev_start_xmit include/linux/netdevice.h:5284 [inline] xmit_one net/core/dev.c:3871 [inline] dev_hard_start_xmit+0x2d8/0x870 net/core/dev.c:3887 __dev_queue_xmit+0x16d1/0x3890 net/core/dev.c:4840 packet_snd net/packet/af_packet.c:3076 [inline] packet_sendmsg+0x3eb6/0x50f0 net/packet/af_packet.c:3108 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] ____sys_sendmsg+0xa68/0xad0 net/socket.c:2592 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2646 __sys_sendmsg net/socket.c:2678 [inline] __do_sys_sendmsg net/socket.c:2683 [inline] __se_sys_sendmsg net/socket.c:2681 [inline] __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2681 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff39859c799 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:00007ff3994e4028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ff398815fa0 RCX: 00007ff39859c799 RDX: 00000000000480c0 RSI: 0000200000000200 RDI: 0000000000000005 RBP: 00007ff398632bd9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff398816038 R14: 00007ff398815fa0 R15: 00007ffecd938d88