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

[syzbot]

Hello,

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

Reported-and-tested-by: syzbot+47dd250f527cb7bebf24@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         6dda6985 fix the breakage in close_fd_get_file() calli..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git work.fd
kernel config:  https://syzkaller.appspot.com/x/.config?x=d4042ecb71632a26
dashboard link: https://syzkaller.appspot.com/bug?extid=47dd250f527cb7bebf24
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.