Re: INFO: task hung in vivid_stop_generating_vid_cap

Re: INFO: task hung in vivid_stop_generating_vid_cap

[syzbot]

syzbot has bisected this bug to:

commit 4493b81bea24269df898339dee638d7c5cb2b2df
Author: Mahesh Bandewar <maheshb@google.com>
Date:   Wed Mar 8 18:55:54 2017 +0000

     bonding: initialize work-queues during creation of bond

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=176d1617200000
start commit:   4493b81b bonding: initialize work-queues during creation o..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=14ed1617200000
console output: https://syzkaller.appspot.com/x/log.txt?x=10ed1617200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=62118286bb772a24
dashboard link: https://syzkaller.appspot.com/bug?extid=06283a66a648cd073885
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15701a33400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=154c8e4d400000

Reported-by: syzbot+06283a66a648cd073885@syzkaller.appspotmail.com
Fixes: 4493b81bea24 ("bonding: initialize work-queues during creation of  
bond")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Re: INFO: task hung in vivid_stop_generating_vid_cap

[Dmitry Vyukov]

On Fri, Mar 22, 2019 at 8:08 AM syzbot
<syzbot+06283a66a648cd073885@syzkaller.appspotmail.com> wrote:
>
> syzbot has bisected this bug to:
>
> commit 4493b81bea24269df898339dee638d7c5cb2b2df
> Author: Mahesh Bandewar <maheshb@google.com>
> Date:   Wed Mar 8 18:55:54 2017 +0000
>
>      bonding: initialize work-queues during creation of bond

+linux-can

I think I will disable CONFIG_CAN before v4.12. It causes too many
false results for v4.12..v4.11 range. It always leads to a wrong
decision for first 3 steps, then no chances of correct bisection
anymore.

> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=176d1617200000
> start commit:   4493b81b bonding: initialize work-queues during creation o..
> git tree:       upstream
> final crash:    https://syzkaller.appspot.com/x/report.txt?x=14ed1617200000
> console output: https://syzkaller.appspot.com/x/log.txt?x=10ed1617200000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=62118286bb772a24
> dashboard link: https://syzkaller.appspot.com/bug?extid=06283a66a648cd073885
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15701a33400000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=154c8e4d400000
>
> Reported-by: syzbot+06283a66a648cd073885@syzkaller.appspotmail.com
> Fixes: 4493b81bea24 ("bonding: initialize work-queues during creation of
> bond")
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Re: INFO: task hung in vivid_stop_generating_vid_cap

[Dmitry Vyukov]

On Fri, Mar 22, 2019 at 9:00 AM Dmitry Vyukov <dvyukov@google.com> wrote:
>
> On Fri, Mar 22, 2019 at 8:08 AM syzbot
> <syzbot+06283a66a648cd073885@syzkaller.appspotmail.com> wrote:
> >
> > syzbot has bisected this bug to:
> >
> > commit 4493b81bea24269df898339dee638d7c5cb2b2df
> > Author: Mahesh Bandewar <maheshb@google.com>
> > Date:   Wed Mar 8 18:55:54 2017 +0000
> >
> >      bonding: initialize work-queues during creation of bond
>
> +linux-can
>
> I think I will disable CONFIG_CAN before v4.12. It causes too many
> false results for v4.12..v4.11 range. It always leads to a wrong
> decision for first 3 steps, then no chances of correct bisection
> anymore.

The same seems to show up for v4.12..v4.13:
all runs: crashed: INFO: trying to register non-static key in can_notifier
https://syzkaller.appspot.com/text?tag=Log&x=1555b12b200000

This was fixed by 74b7b490886852582d986a33443c2ffa50970169 right?



> > bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=176d1617200000
> > start commit:   4493b81b bonding: initialize work-queues during creation o..
> > git tree:       upstream
> > final crash:    https://syzkaller.appspot.com/x/report.txt?x=14ed1617200000
> > console output: https://syzkaller.appspot.com/x/log.txt?x=10ed1617200000
> > kernel config:  https://syzkaller.appspot.com/x/.config?x=62118286bb772a24
> > dashboard link: https://syzkaller.appspot.com/bug?extid=06283a66a648cd073885
> > syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15701a33400000
> > C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=154c8e4d400000
> >
> > Reported-by: syzbot+06283a66a648cd073885@syzkaller.appspotmail.com
> > Fixes: 4493b81bea24 ("bonding: initialize work-queues during creation of
> > bond")
> >
> > For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Re: INFO: task hung in vivid_stop_generating_vid_cap

[syzbot]

syzbot has bisected this bug to:

commit f2fe89061d79706eca5c47e4efdc09bbc171e74a
Author: Helen Koike <helen.koike@collabora.com>
Date:   Fri Apr 7 17:55:19 2017 +0000

     [media] vimc: Virtual Media Controller core, capture and sensor

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12ea247d200000
start commit:   9f51ae62 Merge git://git.kernel.org/pub/scm/linux/kernel/g..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=11ea247d200000
console output: https://syzkaller.appspot.com/x/log.txt?x=16ea247d200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=62118286bb772a24
dashboard link: https://syzkaller.appspot.com/bug?extid=06283a66a648cd073885
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15701a33400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=154c8e4d400000

Reported-by: syzbot+06283a66a648cd073885@syzkaller.appspotmail.com
Fixes: f2fe89061d79 ("[media] vimc: Virtual Media Controller core, capture  
and sensor")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Re: INFO: task hung in vivid_stop_generating_vid_cap

[syzbot]

syzbot suspects this bug was fixed by commit:

commit d65842f7126aa1a87fb44b7c9980c12630ed4f33
Author: Hans Verkuil <hverkuil@xs4all.nl>
Date:   Mon Nov 19 11:09:00 2018 +0000

     media: vb2: add waiting_in_dqbuf flag

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1417a04a600000
start commit:   9f51ae62 Merge git://git.kernel.org/pub/scm/linux/kernel/g..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=62118286bb772a24
dashboard link: https://syzkaller.appspot.com/bug?extid=06283a66a648cd073885
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15701a33400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=154c8e4d400000

If the result looks correct, please mark the bug fixed by replying with:

#syz fix: media: vb2: add waiting_in_dqbuf flag

For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Re: INFO: task hung in vivid_stop_generating_vid_cap

[Marc Kleine-Budde]

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On 3/22/19 9:06 AM, Dmitry Vyukov wrote:
> On Fri, Mar 22, 2019 at 9:00 AM Dmitry Vyukov <dvyukov@google.com> wrote:
>>
>> On Fri, Mar 22, 2019 at 8:08 AM syzbot
>> <syzbot+06283a66a648cd073885@syzkaller.appspotmail.com> wrote:
>>>
>>> syzbot has bisected this bug to:
>>>
>>> commit 4493b81bea24269df898339dee638d7c5cb2b2df
>>> Author: Mahesh Bandewar <maheshb@google.com>
>>> Date:   Wed Mar 8 18:55:54 2017 +0000
>>>
>>>      bonding: initialize work-queues during creation of bond
>>
>> +linux-can
>>
>> I think I will disable CONFIG_CAN before v4.12. It causes too many
>> false results for v4.12..v4.11 range. It always leads to a wrong
>> decision for first 3 steps, then no chances of correct bisection
>> anymore.
> 
> The same seems to show up for v4.12..v4.13:
> all runs: crashed: INFO: trying to register non-static key in can_notifier
> https://syzkaller.appspot.com/text?tag=Log&x=1555b12b200000
> 
> This was fixed by 74b7b490886852582d986a33443c2ffa50970169 right?

ACK

Marc

-- 
Pengutronix e.K.                 | Marc Kleine-Budde           |
Embedded Linux                   | https://www.pengutronix.de  |
Vertretung West/Dortmund         | Phone: +49-231-2826-924     |
Amtsgericht Hildesheim, HRA 2686 | Fax:   +49-5121-206917-5555 |


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Re: INFO: task hung in vivid_stop_generating_vid_cap

[Hans Verkuil]

#syz fix: media: vb2: add waiting_in_dqbuf flag