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SYZFAIL: netlink_send_ext: short netlink write

Status: upstream: reported syz repro on 2021/02/22 10:25
Reported-by: syzbot+8de15481ae9ab73e97bd@syzkaller.appspotmail.com
First crash: 1569d, last: 29d
▶ ▼ Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 SYZFAIL: netlink_send_ext: short netlink write syz error 29 1363d 1569d 0/1 upstream: reported syz repro on 2021/02/22 17:18
android-6-1 SYZFAIL: netlink_send_ext: short netlink write 1 209d 209d 0/2 auto-obsoleted due to no activity on 2025/02/11 23:46
android-5-10 SYZFAIL: netlink_send_ext: short netlink write (2) 2 30d 96d 0/2 premoderation: reported on 2025/03/07 08:36
android-5-10 SYZFAIL: netlink_send_ext: short netlink write 4 242d 332d 0/2 auto-obsoleted due to no activity on 2025/01/09 14:03
linux-4.14 SYZFAIL: netlink_send_ext: short netlink write syz error 40 1166d 1570d 0/1 upstream: reported syz repro on 2021/02/21 20:56
android-5-15 SYZFAIL: netlink_send_ext: short netlink write 16 53d 329d 0/2 premoderation: reported on 2024/07/16 14:39
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/05/27 02:32 17m retest repro android12-5.4 error
2025/05/27 02:32 1h13m retest repro android12-5.4 error
2025/04/19 16:41 27m retest repro android12-5.4 report log
2025/04/19 16:06 20m retest repro android12-5.4 report log
2025/04/19 16:06 10m retest repro android12-5.4 report log
2025/04/19 16:06 6m retest repro android12-5.4 report log
2025/04/19 16:06 15m retest repro android12-5.4 report log
2025/04/19 16:06 6m retest repro android12-5.4 report log
2025/04/05 09:41 11m retest repro android12-5.4 report log
2025/04/05 09:41 5m retest repro android12-5.4 report log

Sample crash report:
2021/03/03 07:02:07 result: hanged=false err=executor 0: exit status 67
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
wrote=-1, want=40 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
wrote=-1, want=40 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/03/03 07:02:08 executed programs: 544
2021/03/03 07:02:09 result: hanged=false err=executor 0: exit status 67
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: netlink read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: netlink read failed
 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/03/03 07:02:13 executed programs: 1344
2021/03/03 07:02:14 result: hanged=false err=executor 0: exit status 67
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
wrote=-1, want=40 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
wrote=-1, want=40 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/03/03 07:02:16 result: hanged=false err=executor 0: exit status 67
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
wrote=-1, want=40 (errno 9: Bad file descriptor)
SYZFAIL: netlink_send_ext: short netlink write
wrote=-1, want=40 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
wrote=-1, want=40 (errno 9: Bad file descriptor)
SYZFAIL: netlink_send_ext: short netlink write
wrote=-1, want=40 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/03/03 07:02:16 result: hanged=false err=executor 0: exit status 67
SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
wrote=-1, want=40 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67


SYZFAIL: netlink_send_ext: short netlink write
SYZFAIL: netlink_send_ext: short netlink write
wrote=-1, want=40 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67

Crashes (15):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/03/03 07:06 android12-5.4 5aa479507289 e5b64d68 .config console log report syz ci2-android-5-4-kasan SYZFAIL: netlink_send_ext: short netlink write
2021/03/02 17:36 android12-5.4 13369a790167 92ead296 .config console log report syz ci2-android-5-4-kasan SYZFAIL: netlink_send_ext: short netlink write
2021/03/01 09:41 android12-5.4 51f76f06a74d 4c37c133 .config console log report syz ci2-android-5-4-kasan SYZFAIL: netlink_send_ext: short netlink write
2021/02/27 21:28 android12-5.4 55e9d3c6b5f7 4c37c133 .config console log report syz ci2-android-5-4-kasan SYZFAIL: netlink_send_ext: short netlink write
2021/02/27 20:51 android12-5.4 55e9d3c6b5f7 4c37c133 .config console log report syz ci2-android-5-4-kasan SYZFAIL: netlink_send_ext: short netlink write
2021/02/24 15:12 android12-5.4 7ba24942b70e fcc6d71b .config console log report syz ci2-android-5-4-kasan SYZFAIL: netlink_send_ext: short netlink write
2021/02/23 20:32 android12-5.4 dcde7eeee6a2 fcc6d71b .config console log report syz ci2-android-5-4-kasan SYZFAIL: netlink_send_ext: short netlink write
2021/02/22 17:31 android12-5.4 6228b4887854 c26fb06b .config console log report syz ci2-android-5-4-kasan SYZFAIL: netlink_send_ext: short netlink write
2021/02/22 12:07 android12-5.4 35f4b1b90596 a659b3f1 .config console log report syz ci2-android-5-4-kasan SYZFAIL: netlink_send_ext: short netlink write
2021/02/22 10:24 android12-5.4 35f4b1b90596 a659b3f1 .config console log report syz ci2-android-5-4-kasan SYZFAIL: netlink_send_ext: short netlink write
2021/02/27 17:11 android12-5.4 55e9d3c6b5f7 4c37c133 .config console log report syz ci2-android-5-4-kasan SYZFAIL: netlink_send_ext: short netlink write
2021/03/03 04:58 android12-5.4 5aa479507289 e5b64d68 .config console log report syz ci2-android-5-4-kasan SYZFAIL: netlink_send_ext: short netlink write
2025/05/12 11:45 android12-5.4 cd8e74fa0fa3 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan SYZFAIL: netlink_send_ext: short netlink write
2025/05/11 01:21 android12-5.4 cd8e74fa0fa3 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan SYZFAIL: netlink_send_ext: short netlink write
2025/03/21 20:42 android12-5.4 41adfeb3d639 c6512ef7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-4-kasan SYZFAIL: netlink_send_ext: short netlink write
* Struck through repros no longer work on HEAD.