Re: [syzbot] KASAN: use-after-free Read in post_one_notification

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+c70d87ac1d001f29a058@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         16007670 kernel/watch_queue: Make pipe NULL while clea..
git tree:       https://github.com/siddhpant/linux.git post_one_notification
console output: https://syzkaller.appspot.com/x/log.txt?x=11a6eade080000
kernel config:  https://syzkaller.appspot.com/x/.config?x=95c061eee05f8e15
dashboard link: https://syzkaller.appspot.com/bug?extid=c70d87ac1d001f29a058
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.