Re: mm allocation failure and hang when running xfstests generic/269 on xfs

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On 2017/3/2 13:19, Xiong Zhou wrote:
> On Wed, Mar 01, 2017 at 04:37:31PM -0800, Christoph Hellwig wrote:
>> On Wed, Mar 01, 2017 at 12:46:34PM +0800, Xiong Zhou wrote:
>>> Hi,
>>>
>>> It's reproduciable, not everytime though. Ext4 works fine.
>>
>> On ext4 fsstress won't run bulkstat because it doesn't exist.  Either
>> way this smells like a MM issue to me as there were not XFS changes
>> in that area recently.
> 
> Yap.
> 
> First bad commit:
> 

It looks like not a bug.
>From below commit, the allocation failure print was due to current process received SIGKILL signal.
You may need to confirm whether that's the case. 

Regards,
Bob

> commit 5d17a73a2ebeb8d1c6924b91e53ab2650fe86ffb
> Author: Michal Hocko <mhocko@xxxxxxxx>
> Date:   Fri Feb 24 14:58:53 2017 -0800
> 
>     vmalloc: back off when the current task is killed
> 
> Reverting this commit on top of
>   e5d56ef Merge tag 'watchdog-for-linus-v4.11'
> survives the tests.
> 


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