From: Jens Axboe <[email protected]>
To: Hillf Danton <[email protected]>,
syzbot <[email protected]>
Cc: [email protected], [email protected],
[email protected], [email protected],
[email protected]
Subject: Re: INFO: trying to register non-static key in io_cqring_ev_posted (2)
Date: Tue, 31 Mar 2020 08:53:43 -0600 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
On 3/31/20 5:44 AM, Hillf Danton wrote:
>
> On Tue, 31 Mar 2020 04:14:03 -0700
>>
>> syzbot has bisected this bug to:
>>
>> commit b41e98524e424d104aa7851d54fd65820759875a
>> Author: Jens Axboe <[email protected]>
>> Date: Mon Feb 17 16:52:41 2020 +0000
>>
>> io_uring: add per-task callback handler
>>
>> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=115adadbe00000
>> start commit: 673b41e0 staging/octeon: fix up merge error
>> git tree: upstream
>> final crash: https://syzkaller.appspot.com/x/report.txt?x=135adadbe00000
>> console output: https://syzkaller.appspot.com/x/log.txt?x=155adadbe00000
>> kernel config: https://syzkaller.appspot.com/x/.config?x=acf766c0e3d3f8c6
>> dashboard link: https://syzkaller.appspot.com/bug?extid=0c3370f235b74b3cfd97
>> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13ac1b9de00000
>> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10449493e00000
>>
>> Reported-by: [email protected]
>> Fixes: b41e98524e42 ("io_uring: add per-task callback handler")
>>
>> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
>
> Looks like another line is missed in that work.
>
> --- a/fs/io_uring.c
> +++ b/fs/io_uring.c
> @@ -5962,6 +5962,7 @@ static int io_sq_thread(void *data)
> }
> if (current->task_works) {
> task_work_run();
> + finish_wait(&ctx->sqo_wait, &wait);
> continue;
> }
> if (signal_pending(current))
Can you send this as a properly formatted patch? That indeed looks like
the issue.
--
Jens Axboe
next parent reply other threads:[~2020-03-31 14:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <[email protected]>
2020-03-31 14:53 ` Jens Axboe [this message]
2020-03-31 7:51 INFO: trying to register non-static key in io_cqring_ev_posted (2) syzbot
2020-03-31 11:14 ` syzbot
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