linux-kernel - Re: [syzbot] general protection fault in __io_queue

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Message-ID: <ec15a6e6-4bd6-25a5-3b91-c60715d51a0c@gmail.com>
Date:   Mon, 16 Aug 2021 23:50:42 +0100
From:   Pavel Begunkov <asml.silence@...il.com>
To:     Jens Axboe <axboe@...nel.dk>,
        syzbot <syzbot+2b85e9379c34945fe38f@...kaller.appspotmail.com>,
        io-uring@...r.kernel.org, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] general protection fault in __io_queue_sqe

On 8/16/21 10:57 PM, Jens Axboe wrote:
> On 8/16/21 3:49 PM, Jens Axboe wrote:
>> On 8/16/21 3:41 PM, syzbot wrote:
>>> syzbot has found a reproducer for the following issue on:
>>>
>>> HEAD commit:    b9011c7e671d Add linux-next specific files for 20210816
>>> git tree:       linux-next
>>> console output: https://syzkaller.appspot.com/x/log.txt?x=1784d5e9300000
>>> kernel config:  https://syzkaller.appspot.com/x/.config?x=a245d1aa4f055cc1
>>> dashboard link: https://syzkaller.appspot.com/bug?extid=2b85e9379c34945fe38f
>>> compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1
>>> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17479216300000
>>> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=147f0111300000
>>
>> #syz test: git://git.kernel.dk/linux-block for-next
> 
> Forgot to push out the update...
> 
> #syz test: git://git.kernel.dk/linux-block 16a390b4109c6eaa65f84e31c2c1d19bcbeb666f

fwiw, tested locally, solves the problem

-- 
Pavel Begunkov