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[Bug nptl/12416] Dynamic linker incorrectly reduces the stack size when making it executable
- From: "kumpera at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: Sat, 26 May 2012 15:30:52 +0000
- Subject: [Bug nptl/12416] Dynamic linker incorrectly reduces the stack size when making it executable
- Auto-submitted: auto-generated
- References: <bug-12416-131@http.sourceware.org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=12416
--- Comment #5 from Rodrigo Kumpera <kumpera at gmail dot com> 2012-05-26 15:30:52 UTC ---
Thanks for improving the situation, but this is a real problem for programs
that do conservative stack scanning such as those that depends on boehm-gc or
mono.
Even if pthread_getattr_np no longer lies about stack boundaries, querying it
all the time is nether optimal and safe as there is no guarantee that it can be
done under signal context - and both boehm and mono do stack scanning under
signal context.
It still has not been answered why shrinking the stack is needed.
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