linux-kernel - Re: [syzbot] KASAN: use-after-free Read in io_poll_remove

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Message-ID: <00000000000085454a05dadb9acd@google.com>
Date:   Tue, 22 Mar 2022 22:00:08 -0700
From:   syzbot <syzbot+cd301bb6523ea8cc8ca2@...kaller.appspotmail.com>
To:     asml.silence@...il.com, axboe@...nel.dk, io-uring@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] KASAN: use-after-free Read in io_poll_remove_entries

Hello,

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

Reported-and-tested-by: syzbot+cd301bb6523ea8cc8ca2@...kaller.appspotmail.com

Tested on:

commit:         7d58de1a io_uring: don't recycle provided buffer if pu..
git tree:       git://git.kernel.dk/linux-block for-5.18/io_uring
kernel config:  https://syzkaller.appspot.com/x/.config?x=198493467201ec16
dashboard link: https://syzkaller.appspot.com/bug?extid=cd301bb6523ea8cc8ca2
compiler:       Debian clang version 11.0.1-2, 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.