Re: WARNING in drm_modeset_lock_all

[Dmitry Vyukov]

On Tue, Oct 31, 2017 at 2:03 PM, Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote:
> On Tue, Oct 31, 2017 at 3:45 PM, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote:
>> Quoting syzbot (2017-10-27 09:09:50)
>>> This bug is generated by a dumb bot. It may contain errors.
>>> See https://goo.gl/tpsmEJ for details.
>>> Direct all questions to syzkaller@xxxxxxxxxxxxxxxxx
>>>
>>> syzbot will keep track of this bug report.
>>> Once a fix for this bug is committed, please reply to this email with:
>>> #syz fix: exact-commit-title
>>> To mark this as a duplicate of another syzbot report, please reply with:
>>> #syz dup: exact-subject-of-another-report
>>> If it's a one-off invalid bug report, please reply with:
>>> #syz invalid
>>> Note: if the crash happens again, it will cause creation of a new bug
>>> report.
>>
>> Can we use
>>
>> Reported-by: syzbot <bot+8de19a03d6fdf256eb2b90ec48916b6f47b9b5a3@xxxxxxxxxxxxxxxxxxxxxxxxx>
>>
>> as a unique tag for tracking purposes?
>
>
> Hi,
>
> Seems to be a common question. I've added the following to bug template:
>
> Please credit me with: Reported-by: syzbot <syzkaller@xxxxxxxxxxxxxxxx>
>
> will now be present on newly reported bugs:
>
> https://groups.google.com/forum/#!topic/syzkaller-bugs/XE8YSiSZDdA


This was fixed by:
#syz fix: drm: Require __GFP_NOFAIL for the legacy drm_modeset_lock_all


Now we indeed can use:
Reported-by: syzbot
<bot+8de19a03d6fdf256eb2b90ec48916b6f47b9b5a3@xxxxxxxxxxxxxxxxxxxxxxxxx>
which avoids the need to go back and manually attach fixing commit to
the report like this.