SYZFAIL: netlink_send_ext: short netlink write

Status: upstream: reported syz repro on 2021/02/22 17:18
Reported-by: syzbot+797b814ad2dfccb17400@syzkaller.appspotmail.com
First crash: 2000d, last: 1794d
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Similar bugs (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-1 SYZFAIL: netlink_send_ext: short netlink write -1 1 639d 639d 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) -1 2 461d 526d 0/2 auto-obsoleted due to no activity on 2025/08/09 13:16
android-5-10 SYZFAIL: netlink_send_ext: short netlink write -1 4 673d 762d 0/2 auto-obsoleted due to no activity on 2025/01/09 14:03
android-54 SYZFAIL: netlink_send_ext: short netlink write -1 syz 15 460d 2000d 0/2 upstream: reported syz repro on 2021/02/22 10:25
linux-4.14 SYZFAIL: netlink_send_ext: short netlink write -1 syz error 40 1597d 2001d 0/1 upstream: reported syz repro on 2021/02/21 20:56
android-5-15 SYZFAIL: netlink_send_ext: short netlink write -1 16 483d 760d 0/2 auto-obsoleted due to no activity on 2025/07/18 02:45
▶ ▼ Fix bisection attempts (7)
Created Duration User Patch Repo Result
2021/10/16 18:24 13m bisect fix linux-4.19.y error job log
2021/09/16 14:49 26m bisect fix linux-4.19.y OK (0) job log log
2021/08/17 14:12 25m bisect fix linux-4.19.y OK (0) job log log
2021/07/03 03:13 23m bisect fix linux-4.19.y OK (0) job log log
2021/06/03 02:45 27m bisect fix linux-4.19.y OK (0) job log log
2021/05/04 01:58 24m bisect fix linux-4.19.y OK (0) job log log
2021/04/04 01:10 25m bisect fix linux-4.19.y OK (0) job log log

Sample crash report:
2021/03/05 01:07:51 executed programs: 158
2021/03/05 01:07:54 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=36 (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=36 (errno 9: Bad file descriptor)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67
2021/03/05 01:08:01 executed programs: 319

Crashes (29):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/03/05 01:10 linux-4.19.y dfb571610ba3 f89ed068 .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/03/04 21:47 linux-4.19.y dfb571610ba3 f89ed068 .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/03/03 05:50 linux-4.19.y 2d19be4653f5 e5b64d68 .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/03/02 06:30 linux-4.19.y 2d19be4653f5 183afb6c .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/03/02 04:18 linux-4.19.y 2d19be4653f5 183afb6c .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/03/02 02:48 linux-4.19.y 2d19be4653f5 183afb6c .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/03/01 19:11 linux-4.19.y 2d19be4653f5 4c37c133 .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/03/01 17:54 linux-4.19.y 2d19be4653f5 4c37c133 .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/28 17:32 linux-4.19.y 2d19be4653f5 4c37c133 .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/28 08:11 linux-4.19.y 2d19be4653f5 4c37c133 .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/27 13:06 linux-4.19.y 2d19be4653f5 4c37c133 .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/25 21:56 linux-4.19.y 2d19be4653f5 76f7fc95 .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/25 20:33 linux-4.19.y 2d19be4653f5 76f7fc95 .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/25 19:28 linux-4.19.y 2d19be4653f5 76f7fc95 .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/25 07:30 linux-4.19.y 2d19be4653f5 fcc6d71b .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/25 06:50 linux-4.19.y 2d19be4653f5 fcc6d71b .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/25 03:03 linux-4.19.y 2d19be4653f5 fcc6d71b .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/24 20:06 linux-4.19.y 2d19be4653f5 fcc6d71b .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/24 15:23 linux-4.19.y 2d19be4653f5 fcc6d71b .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/24 13:19 linux-4.19.y 2d19be4653f5 fcc6d71b .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/24 12:21 linux-4.19.y 2d19be4653f5 fcc6d71b .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/24 11:53 linux-4.19.y 2d19be4653f5 fcc6d71b .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/24 11:38 linux-4.19.y 2d19be4653f5 fcc6d71b .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/24 11:28 linux-4.19.y 2d19be4653f5 fcc6d71b .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/23 13:59 linux-4.19.y 255b58a2b3af fcc6d71b .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/23 07:02 linux-4.19.y 255b58a2b3af fcc6d71b .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/23 00:27 linux-4.19.y 255b58a2b3af c26fb06b .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/02/22 17:17 linux-4.19.y 255b58a2b3af c26fb06b .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
2021/07/18 03:06 linux-4.19.y fcfbdfe9626e f115ae98 .config console log report info ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink write
* Struck through repros no longer work on HEAD.