Re: next/master boot: 273 boots: 63 failed, 209 passed with 1 untried/unknown (next-20171106)

[Guillaume Tucker <guillaume.tucker-ZGY8ohtN/8qB+jHODAdFcQ@public.gmane.org>]

On 08/11/17 15:57, Jon Hunter wrote:
>
> On 08/11/17 15:19, Guillaume Tucker wrote:
>
> ...
>
>> After a few more automated bisection attempts and a bug fix in
>> LAVA, I've now found at least one potentially breaking commit:
>>
>>   commit d89e2378a97fafdc74cbf997e7c88af75b81610a
>>   Author: Robin Murphy <robin.murphy-5wv7dgnIgG8@public.gmane.org>
>>   Date:   Thu Oct 12 16:56:14 2017 +0100
>>
>>       drivers: flag buses which demand DMA configuration
>>
>>
>> I've run some boot tests manually with this revision and then
>> also after reverting it in-place, these respectively failed and
>> passed:
>>
>>   * d89e2378, failed:
>>     https://lava.collabora.co.uk/scheduler/job/978968
>>
>>   * d89e2378 reverted, passed:
>>     https://lava.collabora.co.uk/scheduler/job/978969
>>
>>
>> I then went on and tried the same but on top of next-20171108 and
>> found that they both failed
>>
>>   * next-20171108, failed:
>>     https://lava.collabora.co.uk/scheduler/job/979063
>>
>>   * next-20171108 with d89e2378 reverted, failed as well:
>>     https://lava.collabora.co.uk/scheduler/job/979167
>>
>>
>> So this shows there is almost certainly another offending commit
>> in -next.  The errors in both cases are not quite the same, the
>> last one is triggered by a BUG whereas the first one is a NULL
>> pointer (I haven't looked any further).  Also I don't think
>> there's any fix for d89e2378a97fafdc74cbf997e7c88af75b81610a
>> which is currently still in next.
>
> This crash is a known issue [0] and we have been discussing this. Can
> you try applying [1]?

So with next-20171108 + d89e2378a9 reverted + [1] applied:

   https://lava.collabora.co.uk/scheduler/job/979173

No visible kernel crash in the log but it hangs.


I also tried next-20171108 + [1] applied only:

   https://lava.collabora.co.uk/scheduler/job/979179

which also appears to hang.

Guillaume

> [0] https://lkml.org/lkml/2017/9/19/306
> [1] https://patchwork.kernel.org/patch/9974835/