Re: [PATCH 4.4 00/47] 4.4.92-stable review

[Sumit Semwal]

Hi Greg,

On 11 October 2017 at 09:16, Tom Gall <tom.gall@xxxxxxxxxx> wrote:
>
>> On Oct 10, 2017, at 2:50 PM, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
>>
>> This is the start of the stable review cycle for the 4.4.92 release.
>> There are 47 patches in this series, all will be posted as a response
>> to this one.  If anyone has any issues with these being applied, please
>> let me know.
>>
>> Responses should be made by Thu Oct 12 19:50:01 UTC 2017.
>> Anything received after that time might be too late.
>>
>> The whole patch series can be found in one patch at:
>>       kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.4.92-rc1.gz
>> or in the git tree and branch at:
>>  git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.4.y
>> and the diffstat can be found below.
>>
>> thanks,
>>
>> greg k-h
>>
>
>
> On HiKey (arm64) when running ltp-sched with this rc weâre seeing some sort
> of scheduler issue or  maybe some kind of memory corruption.
>
> Raw output of interest :
>
> https://lkft.validation.linaro.org/scheduler/job/46192#L5291
>
> ltp-sched-tests__url: git://github.com/linux-test-project/ltp.git
> ltp-sched-tests__version: â20170929"
> kernel-config: http://snapshots.linaro.org/openembedded/lkft/morty/hikey/rpb/linaro-hikey-stable-rc-4.4/31/defconfig
> build-location: http://snapshots.linaro.org/openembedded/lkft/morty/hikey/rpb/linaro-hikey-stable-rc-4.4/31

Comparing with other boards in the test setup, we don't see this issue
with x15 (arm), juno (arm64) or x86.

We will investigate to check if any conflicting hikey-specific
(non-lts) patches are causing this, or need adaptation to the
sched/cpuset patch added in this LTS.

This, IMHO, shouldn't cause us to delay this stable release.

Best,
Sumit.