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SYZFAIL: tun: ioctl(TUNSETIFF) failed

Status: premoderation: reported syz repro on 2024/07/07 21:01
Bug presence: origin:downstream
[Documentation on labels]
Reported-by: syzbot+93a370be942014a37b19@syzkaller.appspotmail.com
First crash: 601d, last: 3d11h
▶ ▼ Bug presence (3)
Date Name Commit Repro Result
2026/01/12 android14-6.1 (ToT) 4472ce9a8930 syz [report] SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/01/12 lts (merge base) f6e38ae624cf syz Didn't crash
2026/01/12 upstream (ToT) 0f61b1860cc3 syz Didn't crash
▶ ▼ Similar bugs (14)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-15 SYZFAIL: tun: ioctl(TUNSETIFF) failed origin:lts -1 syz 168 3d02h 609d 0/2 premoderation: reported syz repro on 2024/06/30 02:15
android-54 SYZFAIL: tun: ioctl(TUNSETIFF) failed -1 1 1566d 1566d 0/2 closed as invalid on 2021/11/16 09:11
linux-5.15 SYZFAIL: tun: ioctl(TUNSETIFF) failed -1 10 251d 482d 0/3 auto-obsoleted due to no activity on 2025/09/30 19:38
android-6-12 SYZFAIL: tun: ioctl(TUNSETIFF) failed -1 112 108d 254d 0/1 auto-obsoleted due to no activity on 2026/01/01 11:58
android-54 SYZFAIL: tun: ioctl(TUNSETIFF) failed (4) -1 75 282d 395d 0/2 auto-obsoleted due to no activity on 2025/07/11 21:09
linux-6.6 SYZFAIL: tun: ioctl(TUNSETIFF) failed origin:lts-only -1 syz error 8 46d 146d 0/2 upstream: reported syz repro on 2025/10/06 05:00
linux-5.15 SYZFAIL: tun: ioctl(TUNSETIFF) failed (2) origin:lts-only -1 syz error 11 13d 141d 0/3 upstream: reported syz repro on 2025/10/11 00:29
android-54 SYZFAIL: tun: ioctl(TUNSETIFF) failed (3) -1 3 609d 614d 0/2 auto-obsoleted due to no activity on 2024/09/27 11:34
android-5-10 SYZFAIL: tun: ioctl(TUNSETIFF) failed -1 7 1422d 1581d 0/2 auto-closed as invalid on 2022/07/07 13:54
android-54 SYZFAIL: tun: ioctl(TUNSETIFF) failed (2) -1 3 1426d 1444d 0/2 auto-closed as invalid on 2022/08/03 05:52
linux-6.1 SYZFAIL: tun: ioctl(TUNSETIFF) failed (2) origin:upstream -1 syz 30 6d11h 343d 0/3 upstream: reported syz repro on 2025/03/23 07:07
android-6-12 SYZFAIL: tun: ioctl(TUNSETIFF) failed (2) -1 6 5d04h 36d 0/1 premoderation: reported on 2026/01/23 14:07
android-5-10 SYZFAIL: tun: ioctl(TUNSETIFF) failed (2) -1 syz 1161 3d00h 613d 0/2 premoderation: reported syz repro on 2024/06/25 10:31
linux-6.1 SYZFAIL: tun: ioctl(TUNSETIFF) failed -1 1 447d 447d 0/3 auto-obsoleted due to no activity on 2025/03/18 21:55

Sample crash report:
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: tun: ioctl(TUNSETIFF) failed
 (errno 25: Inappropriate ioctl for device)
loop exited with status 67
SYZFAIL: repeatedly failed to execute the program
proc=3 req=21 state=3 status=67 (errno 9: Bad file descriptor)
connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF

Crashes (145):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/02/17 17:43 android14-6.1 edbe3e111301 06ec4f7b .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-android-6-1 SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/01/12 09:21 android14-6.1 4472ce9a8930 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/25 22:42 android14-6.1 6bfa51973214 94a9671e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/25 09:16 android14-6.1 6bfa51973214 787dfb7c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/24 15:21 android14-6.1 34c1a8e17200 96b1aa46 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/24 13:59 android14-6.1 34c1a8e17200 96b1aa46 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/23 15:51 android14-6.1 34c1a8e17200 6beca497 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/22 20:08 android14-6.1 34c1a8e17200 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/22 03:36 android14-6.1 8494a7f300cc 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/20 12:47 android14-6.1 edbe3e111301 17d780d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/19 16:09 android14-6.1 edbe3e111301 746545b8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/19 07:38 android14-6.1 edbe3e111301 746545b8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/16 06:45 android14-6.1 edbe3e111301 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/15 03:46 android14-6.1 edbe3e111301 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/14 10:32 android14-6.1 edbe3e111301 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/13 18:53 android14-6.1 edbe3e111301 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/13 16:50 android14-6.1 edbe3e111301 6a673c50 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/13 14:15 android14-6.1 edbe3e111301 6a673c50 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/12 13:05 android14-6.1 edbe3e111301 76a109e2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/07 08:13 android14-6.1 c9e2710a7bd0 f20fc9f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/06 07:20 android14-6.1 c9e2710a7bd0 f03c4191 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/02/02 03:32 android14-6.1 478ca7133d0e 6b8752f2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/01/31 05:43 android14-6.1 defbecba6f63 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/01/23 08:25 android14-6.1 d1c598f45d0f 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/01/22 19:23 android14-6.1 c298d33764cb 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/01/20 16:01 android14-6.1 1c6403722ffe 06648d9c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/01/16 08:44 android14-6.1 bf8e7530ab29 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2026/01/04 08:08 android14-6.1 5e6db7045704 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/12/22 02:58 android14-6.1 72ada78f601d d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/12/15 00:57 android14-6.1 6f1c2f8fd8c8 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/12/05 08:19 android14-6.1 5ddae867b428 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/12/01 11:42 android14-6.1 a92da54b7708 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/10/26 16:05 android14-6.1 22c0b7236c43 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/10/24 22:02 android14-6.1 22c0b7236c43 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/10/21 12:16 android14-6.1 22c0b7236c43 9832ed61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/10/11 05:47 android14-6.1 1729ceebf41a ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/10/08 12:13 android14-6.1 1257aa4519ee 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/10/06 04:43 android14-6.1 b328aff1d7b8 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/10/01 03:53 android14-6.1 f6787ec80e17 65a0eece .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/09/30 07:39 android14-6.1 f6787ec80e17 86341da6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/09/14 06:47 android14-6.1 0429b7af308c e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/09/08 09:33 android14-6.1 499d2a0ffd4f d291dd2d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/08/30 14:23 android14-6.1 376207d1f3e2 807a3b61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/08/19 20:54 android14-6.1 87b9d836c3d8 254a27c1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/08/01 09:48 android14-6.1 42472e1a4913 0c075d67 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/07/28 03:00 android14-6.1 2ff414a09808 fb8f743d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/07/20 02:16 android14-6.1 145c7fad733f 7117feec .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/07/18 11:23 android14-6.1 145c7fad733f 88248e14 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
2025/07/13 00:15 android14-6.1 e2deb0b42a3a 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf SYZFAIL: tun: ioctl(TUNSETIFF) failed
* Struck through repros no longer work on HEAD.