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Re: [Xen-devel] [linux-linus test] 55255: regressions - FAIL

On 12/05/15 13:53, Ian Campbell wrote:
> On Tue, 2015-05-12 at 13:35 +0100, Julien Grall wrote:
>> On 12/05/15 11:07, Ian Campbell wrote:
>>> On Mon, 2015-05-11 at 18:09 +0000, osstest service user wrote:
>>>> flight 55255 linux-linus real [real]
>>>> http://logs.test-lab.xenproject.org/osstest/logs/55255/
>>>> Regressions :-(
>>>> Tests which did not succeed and are blocking,
>>>> including tests which could not be run:
>>>>  test-armhf-armhf-xl-arndale   6 xen-boot                  fail REGR. vs. 
>>>> 50329
>>> This is a real failure (and I suspect the others are just things which
>>> happened to run on arndale).
>>> Tail of
>>> http://logs.test-lab.xenproject.org/osstest/logs/55255/test-armhf-armhf-xl-arndale/serial-arndale-metrocentre.log
>>>  is below.
>>> The "outdated DT detected, suspend/resume will NOT work" is due to the
>>> lack of an interrupt-controller property on the pmu device, which I fear
>>> we may be suppressing somewhere while making the dom0 dtb.
>> It seems that Osstest is using the device tree provided by the debian
>> installer.
>> I did try with the device tree provided by Linux and it boots without no
>> issue.
>> We may want to use the device tree attached to every Linux version in
>> order to avoid a such problem. Although, I don't much know
> Yes, we probably should update things to use the dtb from the kernel
> build.
>>> The following null pointer exception I think is probably a bug arising
>>> from trying to continue on regardless.
>> I gave a quick look to see what happens. pmu_base_addr is NULL because
>> it's initialized only when the PMU is an interrupt controller (see
>> exynos_pmu_irq_init). So the first pmu_*read* will segfault.
>> I suspect it's an unwanted behavior because the warning only says
>> suspend/resume won't work. Not the kernel will crash.
> Right, I think this should probably also be fixed. It might be as simple
> as turning the existing pr_warn into pr_warn+return?

I just sent a patch on the Linux ML to switch from pr_warn to


Julien Grall

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