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Re: GCC's -fsplit-stack disturbing Mach's vm_allocate

From: Svante Signell <svante dot signell at gmail dot com>
To: Samuel Thibault <samuel dot thibault at gnu dot org>
Cc: Thomas Schwinge <thomas at codesourcery dot com>, Ian Lance Taylor <iant at google dot com>, gcc-patches at gcc dot gnu dot org, bug-hurd at gnu dot org, fotis dot koutoulakis at gmail dot com, Roland McGrath <roland at hack dot frob dot com>
Date: Fri, 02 May 2014 10:18:12 +0200
Subject: Re: GCC's -fsplit-stack disturbing Mach's vm_allocate
Authentication-results: sourceware.org; auth=none
References: <20130621231655 dot 24D002C14C at topped-with-meat dot com> <87r4fumx2g dot fsf at kepler dot schwinge dot homeip dot net> <CAKOQZ8wZOf8MBdVKiyDcggFBs3A48+QckAoB7XJm+b+E3rkAxQ at mail dot gmail dot com> <87ip10o90k dot fsf at kepler dot schwinge dot homeip dot net> <20140404191416 dot GG5350 at type> <1397027146 dot 1276 dot 29 dot camel at G3620 dot my dot own dot domain> <87fvln6jjp dot fsf at schwinge dot name> <20140416220345 dot GZ5545 at type dot youpi dot perso dot aquilenet dot fr> <20140418080311 dot GA5626 at type dot bordeaux dot inria dot fr> <1398328750 dot 568 dot 74 dot camel at G3620 dot my dot own dot domain> <20140501224530 dot GD5592 at type dot youpi dot perso dot aquilenet dot fr> <1399017803 dot 8487 dot 5 dot camel at PackardBell-PC>
Reply-to: svante dot signell at gmail dot com

On Fri, 2014-05-02 at 10:03 +0200, Svante Signell wrote:
> On Fri, 2014-05-02 at 00:45 +0200, Samuel Thibault wrote:
> > Hello,
> > 
> > Svante Signell, le Thu 24 Apr 2014 10:39:10 +0200, a Ãcrit :
> > > - Without split stack enabled around 70 libgo tests pass and 50 fails,
> > > most of them with a segfault.
> > > - Enabling split stack and using the libc Samuel built all 122 libgo
> > > tests fail with a segfault.
> > 
> > Please provide segfault backtrace, rpctrace, etc.  Otherwise we won't be
> > able to help you.
> 
> You already have one in this thread, analysed by Justus:
> http://gcc.gnu.org/ml/gcc-patches/2014-04/msg01736.html
> 
> The full rpctrace and gdb backtrace for that case was published on
> paste.debian.net, but are gone now. I can upload again if you need them,
> or do you want it attached to a mail?

On request, here are the traces attached.

Attachment: gdb.txt
Description: Text document

Attachment: rpctrace.out
Description: Text document

Follow-Ups:
- Re: GCC's -fsplit-stack disturbing Mach's vm_allocate
  - From: Samuel Thibault
- Re: GCC's -fsplit-stack disturbing Mach's vm_allocate
  - From: Samuel Thibault

References:
- Re: GCC's -fsplit-stack disturbing Mach's vm_allocate
  - From: Samuel Thibault
- Re: GCC's -fsplit-stack disturbing Mach's vm_allocate
  - From: Svante Signell

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