------------[ cut here ]------------ 1 WARNING: net/ipv4/route.c:1275 at ip_rt_bug+0x2d/0x140 net/ipv4/route.c:1275, CPU#1: syz.9.2585/22003 Modules linked in: CPU: 1 UID: 0 PID: 22003 Comm: syz.9.2585 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP 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 5a b7 b7 f7 66 90 e8 53 b7 b7 f7 31 ff 48 89 de ba 02 00 00 00 e8 74 b5 69 ff 90 <0f> 0b 90 31 c0 5b 41 5c 41 5d 41 5e 41 5f 5d e9 cf e4 a6 01 cc 49 RSP: 0018:ffffc90005f2f1c0 EFLAGS: 00010286 RAX: b369e7f907f91800 RBX: ffff888031eb9b40 RCX: 0000000000000401 RDX: 0000000000000002 RSI: ffffffff8df45c2e RDI: ffffffff8c288380 RBP: ffffc90005f2f4c0 R08: ffffffff90128af7 R09: 1ffffffff202515e R10: dffffc0000000000 R11: fffffbfff202515f R12: dffffc0000000000 R13: 0000000000000000 R14: ffff888031eb9b40 R15: dffffc0000000000 FS: 00007f8e5b1296c0(0000) GS:ffff88812553f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2ac2f5 CR3: 00000000298ba000 CR4: 00000000003526f0 DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083 DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: ip_send_skb net/ipv4/ip_output.c:1508 [inline] ip_push_pending_frames+0x8b/0x110 net/ipv4/ip_output.c:1528 __icmp_send+0x118d/0x1590 net/ipv4/icmp.c:999 icmp_send include/net/icmp.h:43 [inline] ip_options_compile+0x80/0xb0 net/ipv4/ip_options.c:473 ip_rcv_options net/ipv4/ip_input.c:290 [inline] ip_rcv_finish_core+0xaa2/0x1c00 net/ipv4/ip_input.c:430 ip_rcv_finish+0x14c/0x2a0 net/ipv4/ip_input.c:490 NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:318 __netif_receive_skb_one_core net/core/dev.c:6193 [inline] __netif_receive_skb net/core/dev.c:6306 [inline] netif_receive_skb_internal net/core/dev.c:6392 [inline] netif_receive_skb+0x45b/0xbf0 net/core/dev.c:6451 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2b8c/0x4300 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8e5a15cfce Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007f8e5b128fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f8e5b1296c0 RCX: 00007f8e5a15cfce RDX: 000000000000005a RSI: 00002000000002c0 RDI: 00000000000000c8 RBP: 00007f8e5a232c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8e5a416038 R14: 00007f8e5a415fa0 R15: 00007fffd49c7a28