linux-kernel - Re: INFO: task hung in io_uring

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Message-ID: <a7e6d4a4-71f8-2a87-324e-31826b728902@kernel.dk>
Date:   Mon, 10 Aug 2020 12:11:36 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Pavel Begunkov <asml.silence@...il.com>,
        syzbot <syzbot+6338dcebf269a590b668@...kaller.appspotmail.com>,
        io-uring@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com,
        viro@...iv.linux.org.uk
Subject: Re: INFO: task hung in io_uring_flush

On 8/10/20 10:08 AM, Pavel Begunkov wrote:
> On 10/08/2020 19:04, syzbot wrote:
>> syzbot has bisected this issue to:
>>
>> commit f86cd20c9454847a524ddbdcdec32c0380ed7c9b
>> Author: Jens Axboe <axboe@...nel.dk>
>> Date:   Wed Jan 29 20:46:44 2020 +0000
>>
>>     io_uring: fix linked command file table usage
> 
> There are several known problems with io_uring_cancel_files() including
> races and hangs. I had some drafts and going to patch it in a week or so.

I'll let you deal with this one, thanks.

-- 
Jens Axboe