linux-kernel - Re: [syzbot] possible deadlock in io_worker_cancel

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Message-ID: <000000000000f0971c05d309b9c2@google.com>
Date:   Mon, 13 Dec 2021 08:40:11 -0800
From:   syzbot <syzbot+b18b8be69df33a3918e9@...kaller.appspotmail.com>
To:     asml.silence@...il.com, axboe@...nel.dk, haoxu@...ux.alibaba.com,
        io-uring@...r.kernel.org, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] possible deadlock in io_worker_cancel_cb

Hello,

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

Reported-and-tested-by: syzbot+b18b8be69df33a3918e9@...kaller.appspotmail.com

Tested on:

commit:         d800c65c io-wq: drop wqe lock before creating new worker
git tree:       git://git.kernel.dk/linux-block io_uring-5.16
kernel config:  https://syzkaller.appspot.com/x/.config?x=6c3ab72998e7f1a4
dashboard link: https://syzkaller.appspot.com/bug?extid=b18b8be69df33a3918e9
compiler:       Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.2

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