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

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To: syzbot <syzbot+47dd250f527cb7bebf24@xxxxxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [syzbot] KASAN: use-after-free Read in filp_close
From: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: Sun, 5 Jun 2022 18:10:13 +0000
Cc: arve@xxxxxxxxxxx, asml.silence@xxxxxxxxx, axboe@xxxxxxxxx, brauner@xxxxxxxxxx, gregkh@xxxxxxxxxxxxxxxxxxx, hdanton@xxxxxxxx, hridya@xxxxxxxxxx, io-uring@xxxxxxxxxxxxxxx, joel@xxxxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, maco@xxxxxxxxxxx, surenb@xxxxxxxxxx, syzkaller-bugs@xxxxxxxxxxxxxxxx, tkjos@xxxxxxxxxxx
In-reply-to: <YpzWvkNcq0llgdkW@zeniv-ca.linux.org.uk>

On Sun, Jun 05, 2022 at 04:15:58PM +0000, Al Viro wrote:
> Argh...  I see what's going on.  Check if the following fixes the problem,
> please.

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git work.fd

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