SYZFAIL: netlink_send_ext: short netlink read

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: eb575cd5 Linux 4.19.195
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11d84fa0300000
kernel config: https://syzkaller.appspot.com/x/.config?x=5506475cccaff975
dashboard link: https://syzkaller.appspot.com/bug?extid=9332240fcfe0185c2f82

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+933224...@syzkaller.appspotmail.com

2021/06/25 00:41:47 executor 4 failed 11 times:
executor 4: exit status 67
SYZFAIL: netlink_send_ext: short netlink read
read=20 (errno 22: Invalid argument)
SYZFAIL: child failed
(errno 0: Success)
loop exited with status 67


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[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: eb575cd5 Linux 4.19.195
git tree: linux-4.19.y

console output: https://syzkaller.appspot.com/x/log.txt?x=155847b8300000

kernel config: https://syzkaller.appspot.com/x/.config?x=5506475cccaff975
dashboard link: https://syzkaller.appspot.com/bug?extid=9332240fcfe0185c2f82

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1308e88c300000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+933224...@syzkaller.appspotmail.com

2021/06/25 23:45:41 executor failed 11 times: executor 0: exit status 67

SYZFAIL: netlink_send_ext: short netlink read

read=32 (errno 22: Invalid argument)

SYZFAIL: child failed
(errno 0: Success)
loop exited with status 67

SYZFAIL: netlink_send_ext: short netlink read

read=32 (errno 22: Invalid argument)