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

Status: premoderation: reported syz repro on 2023/11/10 07:03
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+18c8c4362ab4d787f710@syzkaller.appspotmail.com
First crash: 507d, last: 42d
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2023/11/10 lts (merge base) 12952a23a5da C [report] SYZFAIL: tun: can't open /dev/net/tun
2023/11/10 upstream (ToT) 89cdf9d55601 C [report] SYZFAIL: tun: can't open /dev/net/tun
▶ ▼ Similar bugs (8)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-10 SYZFAIL: tun: can't open /dev/net/tun 1 1240d 1240d 0/2 auto-closed as invalid on 2022/02/05 06:28
android-5-10 SYZFAIL: tun: can't open /dev/net/tun (2) syz error error 34 6d14h 1127d 0/2 premoderation: reported syz repro on 2022/02/27 16:56
android-54 SYZFAIL: tun: can't open /dev/net/tun syz 10 14d 1315d 0/2 upstream: reported syz repro on 2021/08/23 10:35
linux-4.19 SYZFAIL: tun: can't open /dev/net/tun syz error 3 1126d 1269d 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 syz error 20 7d11h 507d 0/2 premoderation: reported syz repro on 2023/11/09 20:06
linux-5.15 SYZFAIL: tun: can't open /dev/net/tun 1 122d 122d 0/3 auto-obsoleted due to no activity on 2025/03/08 18:06
upstream SYZFAIL: tun: can't open /dev/net/tun 1 1422d 1422d 0/28 auto-closed as invalid on 2021/08/06 17:44
linux-6.1 SYZFAIL: tun: can't open /dev/net/tun origin:upstream syz done 1 182d 486d 3/3 fixed on 2024/11/01 17:06
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2024/11/09 12:56 6m retest repro android13-5.15-lts report log
▶ ▼ Fix bisection attempts (5)
Created Duration User Patch Repo Result
2025/02/16 16:15 42m bisect fix android13-5.15-lts OK (0) job log log
2025/01/16 00:57 1h00m bisect fix android13-5.15-lts OK (0) job log log
2024/03/19 22:37 52m bisect fix android13-5.15-lts OK (0) job log log
2024/01/26 07:10 1h06m bisect fix android13-5.15-lts OK (0) job log log
2023/12/26 03:38 49m bisect fix android13-5.15-lts OK (0) job log log

Sample crash report:
2023/11/10 06:59:31 [FATAL] executor failed 11 times: executor 0: exit status 67 err exit status 67
SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
exit status 67

SYZFAIL: tun: can't open /dev/net/tun
 (errno 2: No such file or directory)
loop exited with status 67
exit status 67

Crashes (10):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/11/10 07:02 android13-5.15-lts 61cfd264993d 56230772 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: tun: can't open /dev/net/tun
2024/10/25 22:07 android13-5.15-lts 5e4635681cf1 045e728d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf SYZFAIL: tun: can't open /dev/net/tun
2024/09/17 20:11 android13-5.15-lts b92c0d35d015 c673ca06 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf SYZFAIL: tun: can't open /dev/net/tun
2024/08/11 23:18 android13-5.15-lts 70e1a731d986 6f4edef4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: tun: can't open /dev/net/tun
2024/07/29 00:05 android13-5.15-lts 4edafe6c0231 46eb10b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: tun: can't open /dev/net/tun
2024/07/23 09:03 android13-5.15-lts 5356d2f17edf 708c10c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: tun: can't open /dev/net/tun
2024/07/21 11:08 android13-5.15-lts db06c48ab67e b88348e9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: tun: can't open /dev/net/tun
2024/07/01 09:39 android13-5.15-lts 9044d25b8ff5 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: tun: can't open /dev/net/tun
2024/06/30 21:03 android13-5.15-lts 9044d25b8ff5 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: tun: can't open /dev/net/tun
2024/06/30 08:32 android13-5.15-lts 9044d25b8ff5 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 SYZFAIL: tun: can't open /dev/net/tun
* Struck through repros no longer work on HEAD.