Date: Wed, 21 Apr 2004 12:12:41 +0200 From: nico <nicolinux2002@yahoo.fr> To: Volker Stolz <vs@freebsd.org> Cc: Kris Kennaway <kris@obsecurity.org> Subject: unsubscribe Message-ID: <40864919.3000205@yahoo.fr> References: <20040421004132.GA2292@dogma.freebsd-uk.eu.org> <1082508499.41182.4.camel@shumai.marcuscom.com> <20040421005507.GA70542@xor.obsecurity.org> <20040421092659.GA19703@i2.informatik.rwth-aachen.de> <20040421093616.GA76685@xor.obsecurity.org> <20040421100356.GA5599@i2.informatik.rwth-aachen.de>
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Volker Stolz wrote:
On Wed, Apr 21, 2004 at 02:36:16AM -0700, Kris Kennaway wrote:
Just to add a data point in case somebody wants to look at this:
Looks like a smashed stack: gdb'ing drops you dead in libc's _start() when
you get back from the "call main", if you use "exit" instead of "return" in
main, something else goes wrong...Interestingly, the problem goes away when
linking with ElectricFence.
Interesting, you're able to reproduce this? I couldn't even do that
outside of bento.
In fact, I think I just nailed it:
===> Building package for iiimf-csconv-r11.4
Creating package /usr/ports/packages/All/iiimf-csconv-r11.4.tgz
Registering depends:.
Creating gzip'd tar ball in '/usr/ports/packages/All/iiimf-csconv-r11.4.tgz'
FreeBSD menelaos.informatik.rwth-aachen.de 4.9-STABLE FreeBSD 4.9-STABLE #15: T
hu Mar 25 15:34:34 CET 2004 [1]root@menelaos.informatik.rwth-aachen.de:/usr
/obj/usr/src/sys/MENELAOS i386
The port uses threads, and you'll see many incarnations of
"cc .. -pthread -lc" which really strain the eyes.
Stripping the "-lc" from the configure-script seems to do the trick.
I'll submit a patch once I cleaned up.
Volker
References
1. mailto:root@menelaos.informatik.rwth-aachen.de:/usr/obj/usr/src/sys/MENELAOS
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