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

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Message-ID: <d4f4556c-11ac-7533-f047-cdcfda9bddf8@kernel.dk>
Date:   Thu, 12 Jan 2023 10:42:11 -0700
From:   Jens Axboe <axboe@...nel.dk>
To:     syzbot <syzbot+ebcc33c1e81093c9224f@...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 Read in io_fallback_tw

On 1/12/23 8:24 AM, syzbot wrote:
> syzbot has found a reproducer for the following issue on:
> 
> HEAD commit:    0a093b2893c7 Add linux-next specific files for 20230112
> git tree:       linux-next
> console+strace: https://syzkaller.appspot.com/x/log.txt?x=14b3995a480000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=835f3591019836d5
> dashboard link: https://syzkaller.appspot.com/bug?extid=ebcc33c1e81093c9224f
> 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=11613181480000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=101a000e480000

#syz test: git://git.kernel.dk/linux.git for-next

-- 
Jens Axboe