------------[ cut here ]------------
WARNING: net/ipv4/route.c:1275 at ip_rt_bug+0x2d/0x150 net/ipv4/route.c:1275, CPU#0: syz.8.1393/11502
Modules linked in:
CPU: 0 UID: 0 PID: 11502 Comm: syz.8.1393 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:ip_rt_bug+0x2d/0x150 net/ipv4/route.c:1275
Code: fa 55 41 57 41 56 41 55 41 54 53 48 89 d3 e8 5a 11 ff f7 66 90 e8 53 11 ff f7 31 ff 48 89 de ba 02 00 00 00 e8 b4 09 6e ff 90 <0f> 0b 90 31 c0 5b 41 5c 41 5d 41 5e 41 5f 5d e9 7a 5a 4e f7 cc f3
RSP: 0018:ffffc9000b647178 EFLAGS: 00010292
RAX: fa8b3296dbc9a000 RBX: ffff888057183000 RCX: 0000000000000401
RDX: 0000000000000002 RSI: ffffffff8d79207b RDI: ffffffff8bc083e0
RBP: 0000000000000001 R08: ffffffff8f822277 R09: 1ffffffff1f0444e
R10: dffffc0000000000 R11: fffffbfff1f0444f R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888057183000 R15: ffff8881446b1e00
FS:  00007fe1a1c736c0(0000) GS:ffff888125e1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c398a77 CR3: 000000002e3a3000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 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+0x101e/0x13c0 net/ipv4/icmp.c:972
 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:391
 ip_rcv_finish+0x14c/0x2f0 net/ipv4/ip_input.c:451
 NF_HOOK+0x30c/0x3a0 include/linux/netfilter.h:318
 __netif_receive_skb_one_core net/core/dev.c:6139 [inline]
 __netif_receive_skb+0x143/0x380 net/core/dev.c:6252
 netif_receive_skb_internal net/core/dev.c:6338 [inline]
 netif_receive_skb+0x1bb/0x750 net/core/dev.c:6397
 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485
 tun_get_user+0x2aa3/0x3dc0 drivers/net/tun.c:1953
 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5c9/0xb30 fs/read_write.c:686
 ksys_write+0x145/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe1a0d8e1ff
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007fe1a1c73000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe1a0fe6180 RCX: 00007fe1a0d8e1ff
RDX: 0000000000000042 RSI: 0000200000000000 RDI: 00000000000000c8
RBP: 00007fe1a0e13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000042 R11: 0000000000000293 R12: 0000000000000000
R13: 00007fe1a0fe6218 R14: 00007fe1a0fe6180 R15: 00007ffff4ecb6e8
 </TASK>