Re: linux-next: Tree for Apr 18 [ call-trace: drm | x86 | smp | rcurelated? ]

[Sedat Dilek]

On Sat, Apr 20, 2013 at 12:50 AM, Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
> On Fri, Apr 19, 2013 at 3:34 PM, Sedat Dilek <sedat.dilek@xxxxxxxxx> wrote:
>>
>> See attached dmesg.
>
> This still has the bug Davidlohr pointed at:
>
>>> This looks like what Emmanuel was/is running into:
>>> https://lkml.org/lkml/2013/3/30/1
>
> you need to move the "IS_ERR()" check before the sem_lock.
>

Davidlohr pointed to this patch (tested the triplet):

ipc, sem: do not call sem_lock when bogus sma:
https://lkml.org/lkml/2013/3/31/12

Is that what you mean?

- Sedat -

>               Linus
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