SYZFAIL: tun read failed

Status: upstream: reported syz repro on 2023/12/20 12:51
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+de435d5aa6370353cef3@syzkaller.appspotmail.com
First crash: 955d, last: 32d
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2023/12/20 upstream (ToT) 55cb5f43689d syz [report] SYZFAIL: tun read failed
▶ ▼ Similar bugs (8)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-15 SYZFAIL: tun read failed origin:upstream -1 syz 44 743d 1080d 0/2 closed as invalid on 2024/07/25 13:03
linux-4.19 SYZFAIL: tun read failed -1 syz error 993 1780d 1980d 0/1 upstream: reported syz repro on 2021/02/28 06:02
android-54 SYZFAIL: tun read failed -1 syz 850 1126d 1980d 0/2 auto-obsoleted due to no activity on 2024/06/06 20:38
linux-6.1 SYZFAIL: tun read failed origin:upstream -1 syz error 6 785d 1005d 0/3 upstream: reported syz repro on 2023/10/31 04:06
linux-4.14 SYZFAIL: tun read failed -1 syz error 423 1628d 1980d 0/1 upstream: reported syz repro on 2021/02/28 11:26
android-6-1 SYZFAIL: tun read failed origin:upstream -1 syz inconclusive 44 743d 1097d 0/2 closed as invalid on 2024/07/25 13:03
upstream SYZFAIL: tun read failed -1 syz inconclusive error 1617 748d 1985d 0/29 closed as invalid on 2024/07/25 13:03
android-5-10 SYZFAIL: tun read failed -1 syz error error 123 744d 1743d 0/2 closed as invalid on 2024/07/25 13:03
▶ ▼ Last patch testing requests (6)
Created Duration User Patch Repo Result
2026/06/30 07:45 27m retest repro linux-5.15.y report log
2026/04/02 13:45 20m retest repro linux-5.15.y report log
2025/11/26 00:39 12m retest repro linux-5.15.y report log
2025/09/16 06:42 10m retest repro linux-5.15.y report log
2025/05/04 08:35 12m retest repro linux-5.15.y report log
2025/02/21 21:02 11m retest repro linux-5.15.y report log
▶ ▼ Fix bisection attempts (5)
Created Duration User Patch Repo Result
2026/01/22 08:10 0m bisect fix linux-5.15.y error job log
2025/07/07 02:22 2h37m bisect fix linux-5.15.y OK (0) job log log
2024/06/03 17:25 1h10m bisect fix linux-5.15.y OK (0) job log log
2024/03/19 20:52 1h43m bisect fix linux-5.15.y OK (0) job log log
2024/01/20 21:24 1h01m bisect fix linux-5.15.y OK (0) job log log

Sample crash report:
2023/12/20 12:40:34 [FATAL] executor failed 11 times: executor 0: exit status 67 err exit status 67
SYZFAIL: tun read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
exit status 67

SYZFAIL: tun read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
exit status 67

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/12/20 12:50 linux-5.15.y d0fc081c6241 3ad490ea .config console log report syz [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan SYZFAIL: tun read failed
* Struck through repros no longer work on HEAD.