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1
WARNING: net/ipv4/route.c:1275 at ip_rt_bug+0x2d/0x140, CPU#1: syz.2.6098/19828
Modules linked in:
CPU: 1 UID: 0 PID: 19828 Comm: syz.2.6098 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:ip_rt_bug+0x2d/0x140
Code: fa 55 41 57 41 56 41 55 41 54 53 48 89 d3 e8 fa ea b8 f7 66 90 e8 f3 ea b8 f7 31 ff 48 89 de ba 02 00 00 00 e8 e4 71 68 ff 90 <0f> 0b 90 31 c0 5b 41 5c 41 5d 41 5e 41 5f 5d e9 ff c2 9e 01 cc 49
RSP: 0018:ffffc900080e71c0 EFLAGS: 00010286
RAX: 3b36920d1be62e00 RBX: ffff888160ed3080 RCX: 0000000000000401
RDX: 0000000000000002 RSI: ffffffff8dfa67ee RDI: ffffffff8c28ade0
RBP: ffffc900080e74c0 R08: ffffffff9030aff7 R09: 1ffffffff20615fe
R10: dffffc0000000000 R11: fffffbfff20615ff R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888160ed3080 R15: dffffc0000000000
FS:  00007f71120256c0(0000) GS:ffff8882a928f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2db96a CR3: 00000001a2b44000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 ip_push_pending_frames+0x8b/0x110
 __icmp_send+0x11e4/0x1690
 ip_options_compile+0x80/0xb0
 ip_rcv_finish_core+0xaa2/0x1c00
 ip_rcv_finish+0x14c/0x2a0
 NF_HOOK+0x336/0x3c0
 netif_receive_skb+0x45b/0xbf0
 tun_rx_batched+0x1de/0x790
 tun_get_user+0x2bbc/0x43e0
 tun_chr_write_iter+0x113/0x200
 vfs_write+0x61d/0xb90
 ksys_write+0x150/0x270
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f711115d60e
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 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f7112024fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f71120256c0 RCX: 00007f711115d60e
RDX: 0000000000000046 RSI: 0000200000000400 RDI: 00000000000000c8
RBP: 00007f7111232d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7111416038 R14: 00007f7111415fa0 R15: 00007ffd98cb49c8
 </TASK>
