Re: ocrdma failure in 4.4.0-rc5

[Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

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On 12/23/2015 01:53 PM, Devesh Sharma wrote:
> Hi Dough,
> 
> I was all set to send you an update in my morning tomorrow. Let me
> give you a brief update here
> 
> The deadlock is caused being caused due to following two facts:
> A. be2net is sending open/close event to ocrdma holding
> device_list_mutex. Nic Open/close hooks are called under rtnl lock
> from user-space.
> B. As per ocrdma intialization logic ib_register_device() is called
> under device_list_mutex. On the other hand inside
> ib_register_device(), GID table initialization logic tries to acquire
> rtln-lock to fill some of the table attributes.
> 
> My patch series to fix this issue is already under testing. After 1
> round of internal reivew I should be able to post the series in a day
> or two.

Ok.  This is a serious enough issue I really want it for 4.4-rc, so the
sooner the better ;-)

Thanks for the update.

> -Regards
> Devesh
> 
> 
> On Wed, Dec 23, 2015 at 11:29 PM, Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
>> On 12/20/2015 11:29 PM, Devesh Sharma wrote:
>>> Hi Dough,
>>>
>>> Thanks for your note.
>>>
>>> We will root cause the issue asap and get back to you with the fix.
>>
>> Ping.  Any update?
>>
>>> -Regards
>>> Devesh
>>>
>>> On Sun, Dec 20, 2015 at 1:41 AM, Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> wrote:
>>>> Hi Devesh,
>>>>
>>>> Testing 4.4.0-rc5, the ocrdma driver is failing for me (100% reliably).
>>>>  If you have vlans off of the main device, this is what I get from the
>>>> Fedora rawhide 4.4.0-rc5 kernel:
>>>>
>>>>
>>>> --
>>>> Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
>>>>               GPG KeyID: 0E572FDD
>>>>
>>
>>
>> --
>> Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
>>               GPG KeyID: 0E572FDD
>>
>>


-- 
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
              GPG KeyID: 0E572FDD



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