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Re: [PATCH 2/2][BZ #12416] Use stack boundaries from /proc/PID/mapsto make stack executable


On 6/12/2012 10:08 PM, Siddhesh Poyarekar wrote:
> On Tue, 12 Jun 2012 13:20:42 -0400, KOSAKI wrote:
>> btw, I think non main thread stack size also violate same sentence in
>> posix. because of, nptl pthread_setstacksize() set "stack size +
>> guard-page size", but posix require pthread_attr_getstack() should
>> return only read/write pages.
>>
> 
> Yes, Carlos is working on a fix for this:
> 
> http://sourceware.org/bugzilla/show_bug.cgi?id=11787

Thanks for pointing out that there is a POSIX requirement for the pages to be RW.

That's further proof that all the stuff we currently place into the stack needs
to be counted independently.

Cheers,
Carlos.
-- 
Carlos O'Donell
Mentor Graphics / CodeSourcery
carlos_odonell@mentor.com
carlos@codesourcery.com
+1 (613) 963 1026


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