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

[syzbot]

Hello,

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

Reported-and-tested-by: syzbot+03d7b43290037d1f87ca@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         e0dccc3b Linux 5.19-rc8
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=145fb2c2080000
kernel config:  https://syzkaller.appspot.com/x/.config?x=cfd2f9ae77f1f719
dashboard link: https://syzkaller.appspot.com/bug?extid=03d7b43290037d1f87ca
compiler:       Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
patch:          https://syzkaller.appspot.com/x/patch.diff?x=124486de080000

Note: testing is done by a robot and is best-effort only.