linux-kernel - Re: [syzbot] KASAN: use-after-free Write in io_queue_worker

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Message-ID: <9db849c7-f998-dec6-5553-1d2670389204@kernel.dk>
Date:   Thu, 9 Dec 2021 22:26:18 -0700
From:   Jens Axboe <axboe@...nel.dk>
To:     syzbot <syzbot+b60c982cb0efc5e05a47@...kaller.appspotmail.com>,
        asml.silence@...il.com, io-uring@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] KASAN: use-after-free Write in io_queue_worker_create

On 12/9/21 10:21 PM, syzbot wrote:
> syzbot has found a reproducer for the following issue on:
> 
> HEAD commit:    c741e49150db Merge tag 'for-linus' of git://git.kernel.org..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=125600bab00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=221ffc09e39ebbd1
> dashboard link: https://syzkaller.appspot.com/bug?extid=b60c982cb0efc5e05a47
> compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1686906db00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1539a9b9b00000
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+b60c982cb0efc5e05a47@...kaller.appspotmail.com

#syz test git://git.kernel.dk/linux-block io_uring-5.16

-- 
Jens Axboe