SYZFAIL: netlink_send_ext: short netlink read

Status: upstream: reported syz repro on 2021/06/25 00:42
Reported-by: syzbot+9332240fcfe0185c2f82@syzkaller.appspotmail.com
First crash: 1886d, last: 1754d
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream SYZFAIL: netlink_send_ext: short netlink read -1 3 1643d 1709d 0/29 auto-closed as invalid on 2022/05/23 13:05
android-54 SYZFAIL: netlink_send_ext: short netlink read -1 1 1948d 1948d 0/2 auto-closed as invalid on 2021/08/21 09:04
▶ ▼ Fix bisection attempts (3)
Created Duration User Patch Repo Result
2021/10/31 20:03 10m bisect fix linux-4.19.y error job log
2021/09/30 14:35 35m bisect fix linux-4.19.y OK (0) job log log
2021/08/31 13:54 40m bisect fix linux-4.19.y OK (0) job log log

Sample crash report:
2021/08/01 13:28:29 executor failed 11 times: executor 0: exit status 67
SYZFAIL: netlink_send_ext: short netlink read
read=6 (errno 22: Invalid argument)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67

SYZFAIL: netlink_send_ext: short netlink read
read=6 (errno 22: Invalid argument)
SYZFAIL: child failed
 (errno 0: Success)
loop exited with status 67

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/08/01 13:32 linux-4.19.y 53bd76690e27 6c236867 .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink read
2021/08/01 11:54 linux-4.19.y 53bd76690e27 6c236867 .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink read
2021/07/09 13:46 linux-4.19.y 9f84340f012e 281e815f .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink read
2021/06/25 23:56 linux-4.19.y eb575cd5d7f6 ae6bf8dd .config console log report syz ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink read
2021/11/03 23:37 linux-4.19.y 3f8a27f9e27b 4c1be0be .config console log report info ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink read
2021/06/25 18:53 linux-4.19.y eb575cd5d7f6 ae6bf8dd .config console log report info ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink read
2021/06/25 00:41 linux-4.19.y eb575cd5d7f6 0edbbe31 .config console log report info ci2-linux-4-19 SYZFAIL: netlink_send_ext: short netlink read
* Struck through repros no longer work on HEAD.