WARNING in ip_rt

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.19	WARNING in ip_rt_bug	-1	syz, C		error	2	1763d	2311d	0/1	upstream: reported C repro on 2020/04/03 11:53
linux-6.1	WARNING in ip_rt_bug (2)	-1				1	850d	850d	0/3	auto-obsoleted due to no activity on 2024/07/13 04:22
linux-6.1	WARNING in ip_rt_bug	-1				1	1080d	1080d	0/3	auto-obsoleted due to no activity on 2023/11/25 06:32
upstream	WARNING in ip_rt_bug (2) net	-1	syz, C	done	error	612	87d	1389d	29/29	fixed on 2026/05/06 16:40
linux-5.15	WARNING in ip_rt_bug	-1				7	453d	573d	0/3	auto-obsoleted due to no activity on 2025/08/13 17:11
linux-6.6	WARNING in ip_rt_bug	-1				1	219d	219d	0/2	auto-obsoleted due to no activity on 2026/04/04 15:30
upstream	WARNING in ip_rt_bug (3) prio:high net	-1	syz, C	error		54	63d	74d	29/29	fixed on 2026/07/15 08:27
upstream	WARNING in ip_rt_bug net	-1				1	3044d	3036d	0/29	auto-closed as invalid on 2019/02/22 10:34
linux-6.1	WARNING in ip_rt_bug (4) origin:lts-only	-1	syz, C		inconclusive	5	119d	328d	0/3	upstream: reported C repro on 2025/09/08 02:20
linux-6.1	WARNING in ip_rt_bug (3)	-1				26	421d	589d	0/3	auto-obsoleted due to no activity on 2025/09/07 04:48

Created	Duration	User	Patch	Repo	Result
2023/01/26 04:32	17m	retest repro		linux-4.14.y	report log
2022/09/08 01:27	9m	retest repro		linux-4.14.y	report log

Created

Duration

User

Patch

Repo

Result

2023/01/26 04:32

17m

retest repro

linux-4.14.y

report log

2022/09/08 01:27

retest repro

linux-4.14.y

report log

Created	Duration	User	Repo	Result
2020/07/14 04:33	32m	bisect fix	linux-4.14.y	OK (2) job log
2020/06/14 04:09	22m	bisect fix	linux-4.14.y	OK (0) job log log
2020/05/15 03:42	27m	bisect fix	linux-4.14.y	OK (0) job log log

Created

Duration

User

Patch

Repo

Result

2020/07/14 04:33

32m

bisect fix

linux-4.14.y

OK (2) job log

2020/06/14 04:09

22m

bisect fix

linux-4.14.y

OK (0) job log log

2020/05/15 03:42

27m

bisect fix

linux-4.14.y

OK (0) job log log

syz-executor690 uses obsolete (PF_INET,SOCK_PACKET) ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6314 at net/ipv4/route.c:1244 ip_rt_bug+0x11/0x20 net/ipv4/route.c:1243 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 6314 Comm: syz-executor690 Not tainted 4.14.176-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x13e/0x194 lib/dump_stack.c:58 panic+0x1f9/0x42d kernel/panic.c:183 __warn.cold+0x2f/0x30 kernel/panic.c:547 report_bug+0x20a/0x248 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963 RIP: 0010:ip_rt_bug+0x11/0x20 net/ipv4/route.c:1244 RSP: 0018:ffff88809afa73b8 EFLAGS: 00010297 RAX: ffff888097d70500 RBX: ffffffff886d9b80 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff87d842e0 RDI: 0000000000000282 RBP: ffff88809ef05e80 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809dd592c0 R13: ffff88809ef05e80 R14: ffff8880a66aabc0 R15: ffff88809ef05ed8 dst_output include/net/dst.h:462 [inline] ip_local_out+0x93/0x170 net/ipv4/ip_output.c:124 ip_send_skb+0x3a/0xc0 net/ipv4/ip_output.c:1422 ip_push_pending_frames+0x5f/0x80 net/ipv4/ip_output.c:1442 icmp_push_reply+0x381/0x4f0 net/ipv4/icmp.c:395 __icmp_send+0x90f/0x1110 net/ipv4/icmp.c:743 icmp_send include/net/icmp.h:47 [inline] ip_options_compile+0x93/0xc0 net/ipv4/ip_options.c:485 ip_rcv_options net/ipv4/ip_input.c:283 [inline] ip_rcv_finish+0x657/0x1a10 net/ipv4/ip_input.c:364 NF_HOOK include/linux/netfilter.h:250 [inline] NF_HOOK include/linux/netfilter.h:244 [inline] ip_rcv+0x9d8/0xfec net/ipv4/ip_input.c:493 __netif_receive_skb_core+0x1e50/0x2c00 net/core/dev.c:4477 __netif_receive_skb+0x27/0x1a0 net/core/dev.c:4515 netif_receive_skb_internal+0xd7/0x580 net/core/dev.c:4588 tun_rx_batched.isra.0+0x46c/0x7a0 drivers/net/tun.c:1221 tun_get_user+0xcde/0x3880 drivers/net/tun.c:1581 tun_chr_write_iter+0xcf/0x179 drivers/net/tun.c:1608 call_write_iter include/linux/fs.h:1778 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x44e/0x630 fs/read_write.c:482 vfs_write+0x192/0x4e0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x440699 RSP: 002b:00007fff0b9f57f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440699 RDX: 000000000000100c RSI: 0000000020000240 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000002c00 R09: 00007fff0000000d R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401f20 R13: 0000000000401fb0 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..