linux-kernel - Re: open_posix_testsuite: STOP + CONT + wait hang?

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Date:	Wed, 17 Jun 2009 20:04:57 +0530
From:	naresh kamboju <naresh.kernel@...il.com>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>,
	Roland McGrath <roland@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Hellwig <hch@...radead.org>,
	Ingo Molnar <mingo@...e.hu>,
	Pavel Emelyanov <xemul@...nvz.org>,
	linux-kernel@...r.kernel.org
Subject: Re: open_posix_testsuite: STOP + CONT + wait hang?

Thank you very much.
just before i have reported the same issue to ARM Kernel mailing list.


Best regards,
Naresh Kamboju

On Wed, Jun 17, 2009 at 6:59 PM, Oleg Nesterov<oleg@...hat.com> wrote:
> On 06/17, naresh kamboju wrote:
>>
>> please find inline comments
>
> Thanks Naresh.
>
>> >> ARCH: ARM
>> >
>> > is it ARM specific? I can't reproduce the problem on x86.
>> yes it is specific to ARM. test cases are PASSED on X86-2.6.29 Kernels.
>
> Not good, because I know nothing about arm and don't have the arm machine ;)
> Will try to look...
>
>> > If you can reproduce the problem, please send the content of
>> > /proc/CHILD_PID/status and /proc/PARENT_PID/status.
>>
>> i have attached  strace and proc_log
>> please review the same.
>
> Thanks.
>
> Could you reproduce without strace, and send the output of /proc/xxx/status ?
> I don't really expect we will see something interesting, but just in case.
>
> Also, the output of sysrq-t may help. (the part which relates to these 2
> processes).
>
> Oleg.
>
>
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