On Fri, 2012-03-23 at 18:23 -0300, Lucas Meneghel Rodrigues wrote:
> On Wed, 2012-03-21 at 11:01 +0530, Satheesh Rajendran wrote:
> > Lucas,
> > 
> > cgroup memory_limit,memory_memsw_limit,memory_move test ran in the
> > rhel6.2ga causing a kernel panic in host and this is reproducible every
> > time.
> 
> Update: We've found the culprit to be the THP (transparent hugepages)
> code, and fortunately Andrea has sent a fix upstream not long ago fixing
> the problem. We're currently in the process of getting an rpm with the
> fix so we could assess it did fix the problem. Thanks again for
> reporting the problem, Satheesh!
> 


Great, Good to hear that the root cause and fix too have been found.
Thanks for mentioning it.
Possible share the details of the patch.


> > It is not capturing the test results due to the panic.
> > 
> > I have added some pdb trace statements for debugging in the file
> > (/client/tests/kvm/tests/cgroup.py) attached the same here.
> > 
> > I ve executed the test and captured the bash log(bash-log.txt) and var
> > log messages(log-message.txt)
> > 
> > Though other cgroup tests are running fine which are using the same
> > function (cgroup.set_cgroup).
> > 
> > Tried even to enable the core dump, not getting triggered.
> > 
> > Please have look into this and comment.
> >  
> > Let me know in case of further inputs needed.
> > 
> > Regards,
> > -Satheesh.
> 
> 


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