SYZFAIL: tun: can't open /dev/net/tun

Date	Name	Commit	Repro	Result
2025/11/10	linux-6.6.y (ToT)	0a805b6ea8cd	syz	[report] SYZFAIL: tun: can't open /dev/net/tun
2025/11/10	upstream (ToT)	e9a6fb0bcdd7	syz	Didn't crash

Date

Name

Commit

Repro

Result

2025/11/10

linux-6.6.y (ToT)

0a805b6ea8cd

syz

[report] SYZFAIL: tun: can't open /dev/net/tun

2025/11/10

upstream (ToT)

e9a6fb0bcdd7

syz

Didn't crash

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-6.1	SYZFAIL: tun: can't open /dev/net/tun (2) origin:lts-only	-1	syz		error	10	15d	101d	0/3	upstream: reported syz repro on 2025/10/14 07:23
linux-5.15	SYZFAIL: tun: can't open /dev/net/tun (2) origin:lts-only	-1	syz		error	4	1d08h	77d	0/3	upstream: reported syz repro on 2025/11/07 16:34
android-5-10	SYZFAIL: tun: can't open /dev/net/tun	-1				1	1538d	1538d	0/2	auto-closed as invalid on 2022/02/05 06:28
android-5-15	SYZFAIL: tun: can't open /dev/net/tun origin:upstream	-1	syz			24	21h50m	805d	0/2	premoderation: reported syz repro on 2023/11/10 07:03
android-5-10	SYZFAIL: tun: can't open /dev/net/tun (2)	-1	syz	error	error	66	4d21h	1426d	0/2	premoderation: reported syz repro on 2022/02/27 16:56
android-54	SYZFAIL: tun: can't open /dev/net/tun	-1	syz			18	253d	1614d	0/2	upstream: reported syz repro on 2021/08/23 10:35
linux-4.19	SYZFAIL: tun: can't open /dev/net/tun	-1	syz		error	3	1425d	1567d	0/1	upstream: reported syz repro on 2021/10/09 05:44
android-6-1	SYZFAIL: tun: can't open /dev/net/tun origin:upstream	-1	syz	error		34	4d08h	806d	0/2	premoderation: reported syz repro on 2023/11/09 20:06
linux-5.15	SYZFAIL: tun: can't open /dev/net/tun	-1				1	421d	421d	0/3	auto-obsoleted due to no activity on 2025/03/08 18:06
upstream	SYZFAIL: tun: can't open /dev/net/tun	-1				1	1721d	1721d	0/29	auto-closed as invalid on 2021/08/06 17:44
android-6-12	SYZFAIL: tun: can't open /dev/net/tun origin:upstream	-1	syz			53	67d	206d	0/1	premoderation: reported syz repro on 2025/07/01 04:36
linux-6.1	SYZFAIL: tun: can't open /dev/net/tun origin:upstream	-1	syz		done	1	481d	785d	3/3	fixed on 2024/11/01 17:06

Created	Duration	User	Patch	Repo	Result
2026/01/23 14:54	1m	fix candidate		upstream	error job log

Created

Duration

User

Patch

Repo

Result

2026/01/23 14:54

fix candidate

upstream

error job log

SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: tun: can't open /dev/net/tun (errno 2: No such file or directory) loop exited with status 67 SYZFAIL: repeatedly failed to execute the program proc=1 req=2195 state=3 status=67 (errno 32: Broken pipe) connection error: failed to recv *flatrpc.ExecutorMessageRawT: read tcp 127.0.0.1:45721->127.0.0.1:37344: read: connection reset by peer

Crashes (5):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	VM info	Assets (help?)	Manager	Title
2026/01/08 17:53	linux-6.6.y	5fa4793a2d2d	d6526ea3	.config	console log	report	syz / log		[disk image] [vmlinux] [kernel image]	ci2-linux-6-6-kasan-perf	SYZFAIL: tun: can't open /dev/net/tun
2025/12/05 16:12	linux-6.6.y	4791134e4aeb	d6526ea3	.config	console log	report	syz / log		[disk image] [vmlinux] [kernel image]	ci2-linux-6-6-kasan-perf	SYZFAIL: tun: can't open /dev/net/tun
2025/11/09 04:42	linux-6.6.y	0a805b6ea8cd	4e1406b4	.config	console log	report	syz / log		[disk image] [vmlinux] [kernel image]	ci2-linux-6-6-kasan-perf	SYZFAIL: tun: can't open /dev/net/tun
2025/12/20 16:52	linux-6.6.y	5fa4793a2d2d	d6526ea3	.config	console log	report		info	[disk image] [vmlinux] [kernel image]	ci2-linux-6-6-kasan-perf	SYZFAIL: tun: can't open /dev/net/tun
2025/12/12 20:33	linux-6.6.y	5fa4793a2d2d	d6526ea3	.config	console log	report		info	[disk image] [vmlinux] [kernel image]	ci2-linux-6-6-kasan	SYZFAIL: tun: can't open /dev/net/tun

Crashes (5):

Assets (help?)