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SYZFAIL: tun: can't open /dev/net/tun (2)

Status: premoderation: reported syz repro on 2022/02/27 16:56
Reported-by: syzbot+c020be0a91accb096850@syzkaller.appspotmail.com
First crash: 1465d, last: 5d18h
Cause bisection: failed (error log, bisect log)
  
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Similar bugs (12)
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 12 19d 140d 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 3d08h 116d 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 1577d 1577d 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 37 6d16h 844d 0/2 premoderation: reported syz repro on 2023/11/10 07:03
android-54 SYZFAIL: tun: can't open /dev/net/tun -1 syz 18 292d 1653d 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 1464d 1606d 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 39 11d 845d 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 460d 460d 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 1760d 1760d 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 54 8d09h 245d 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 520d 824d 3/3 fixed on 2024/11/01 17:06
linux-6.6 SYZFAIL: tun: can't open /dev/net/tun origin:lts-only -1 syz error 5 54d 114d 0/2 upstream: reported syz repro on 2025/11/09 04:42
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/12/12 17:25 9m retest repro android13-5.10-lts report log
2025/12/12 17:25 6m retest repro android13-5.10-lts report log
2025/10/05 07:17 5m retest repro android13-5.10-lts report log
2025/10/05 07:17 11m retest repro android13-5.10-lts report log
2025/09/02 10:32 6m retest repro android13-5.10-lts report log
2025/07/27 06:51 9m retest repro android13-5.10-lts report log
2025/07/27 06:51 14m retest repro android13-5.10-lts report log
2025/06/23 13:47 12m retest repro android13-5.10-lts report log
2025/05/14 00:05 11m retest repro android13-5.10-lts report log
2025/04/28 14:11 1h14m retest repro android13-5.10-lts report log
▶ ▼ Fix bisection attempts (7)
Created Duration User Patch Repo Result
2023/02/03 12:08 1m bisect fix android12-5.10-lts error job log
2022/10/29 04:52 16m bisect fix android12-5.10-lts OK (0) job log log
2022/09/09 01:56 15m bisect fix android12-5.10-lts OK (0) job log log
2022/08/09 18:27 19m bisect fix android12-5.10-lts OK (0) job log log
2022/07/10 18:11 16m bisect fix android12-5.10-lts OK (0) job log log
2022/06/10 17:15 15m bisect fix android12-5.10-lts OK (0) job log log
2022/05/11 16:57 17m bisect fix android12-5.10-lts OK (0) job log log

Sample crash report:
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=2 req=617 state=3 status=67 (errno 9: Bad file descriptor)
connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF

Crashes (82):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/12/28 09:59 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/12/25 03:31 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/12/18 08:32 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/12/17 09:33 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/11/28 13:57 android13-5.10-lts 9286af17ed5f d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/11/14 05:10 android13-5.10-lts ab3e1c0dd1ff 07e030de .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/11/07 22:21 android13-5.10-lts ab3e1c0dd1ff 4e1406b4 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2023/11/08 16:44 android13-5.10-lts d30b996835c0 b93f63e8 .config console log report syz [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2022/03/25 21:16 android12-5.10-lts ab2d1d40a128 89bc8608 .config console log report syz ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2022/02/27 16:55 android12-5.10-lts e1b86e7f5cbb 45a13a73 .config console log report syz ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2026/02/26 07:53 android13-5.10-lts e8b14e1cefe8 e0f78d93 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/02/24 12:26 android13-5.10-lts e8b14e1cefe8 96b1aa46 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/02/23 17:45 android13-5.10-lts e8b14e1cefe8 6beca497 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/02/22 20:42 android13-5.10-lts e8b14e1cefe8 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/02/22 18:44 android13-5.10-lts e8b14e1cefe8 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/02/17 03:46 android13-5.10-lts e8b14e1cefe8 e439b951 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/02/17 02:10 android13-5.10-lts e8b14e1cefe8 5d52cba5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/02/16 01:00 android13-5.10-lts e8b14e1cefe8 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/02/15 16:56 android13-5.10-lts e8b14e1cefe8 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/02/15 09:06 android13-5.10-lts e8b14e1cefe8 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/02/15 02:15 android13-5.10-lts e8b14e1cefe8 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/02/13 12:34 android13-5.10-lts e8b14e1cefe8 6a673c50 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/02/02 17:09 android13-5.10-lts 186f761c519d 018ebef2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/01/30 19:17 android13-5.10-lts 186f761c519d ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2026/01/30 07:15 android13-5.10-lts 186f761c519d bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/01/28 19:36 android13-5.10-lts 186f761c519d 004c195c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/01/19 05:49 android13-5.10-lts e253c52bbdfc 20d37d28 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2026/01/05 06:50 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2026/01/02 11:29 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/12/25 21:59 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/12/25 06:28 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/12/24 00:42 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/12/23 14:33 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/11/22 16:32 android13-5.10-lts e625d26dbfea 4fb8ef37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/11/14 18:08 android13-5.10-lts ab3e1c0dd1ff f7988ea4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/11/12 20:16 android13-5.10-lts ab3e1c0dd1ff 07e030de .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/11/09 18:13 android13-5.10-lts ab3e1c0dd1ff 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/11/08 08:20 android13-5.10-lts ab3e1c0dd1ff 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/11/06 20:43 android13-5.10-lts ab3e1c0dd1ff 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/11/01 03:48 android13-5.10-lts ab3e1c0dd1ff 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/10/25 11:12 android13-5.10-lts 2ece552169c2 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/10/23 21:01 android13-5.10-lts 2ece552169c2 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/10/21 18:42 android13-5.10-lts 2ece552169c2 9832ed61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/09/19 03:17 android13-5.10-lts 911f602c2237 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/08/11 15:56 android13-5.10-lts 1154f779f3f3 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/07/12 20:17 android13-5.10-lts 59e9a7228857 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/07/09 19:59 android13-5.10-lts 59e9a7228857 f4e5e155 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/05/23 00:00 android13-5.10-lts 7e2543346ff7 0919b50b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/05/21 22:10 android13-5.10-lts 7e2543346ff7 dc5d3808 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/05/18 05:12 android13-5.10-lts 7e2543346ff7 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/03/31 12:17 android13-5.10-lts 094fc3778d6b d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/03/24 17:26 android13-5.10-lts 094fc3778d6b 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/03/11 20:45 android13-5.10-lts 3f5f2283d684 16256247 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2025/02/02 22:47 android13-5.10-lts fbe98d68b6b3 568559e4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2025/01/15 01:38 android13-5.10-lts fbe98d68b6b3 f310a27d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2024/07/06 17:33 android13-5.10-lts 3feee789f446 2a40360c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2024/07/05 07:58 android13-5.10-lts 3feee789f446 3f2748a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2024/06/25 03:45 android13-5.10-lts b58b8f9dad93 215eef4a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2022/04/10 05:46 android12-5.10-lts 414e6c8e941c e22c3da3 .config console log report info ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2022/04/06 17:34 android12-5.10-lts 414e6c8e941c 97582466 .config console log report info ci2-android-5-10-perf SYZFAIL: tun: can't open /dev/net/tun
2022/03/25 20:29 android12-5.10-lts ab2d1d40a128 89bc8608 .config console log report info ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
2022/03/17 08:49 android12-5.10-lts 9e96a3d6ae39 dfa9a8ed .config console log report info ci2-android-5-10 SYZFAIL: tun: can't open /dev/net/tun
* Struck through repros no longer work on HEAD.