Your message dated Tue, 19 Sep 2006 22:21:26 -0700
with message-id <[EMAIL PROTECTED]>
and subject line Bug#384505: libgl1-mesa-glx: segfaults in multithreaded apps
(fixed upstream)
has caused the attached Bug report to be marked as done.
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--- Begin Message ---
Package: libgl1-mesa-glx
Version: 6.4.2-1.1
Severity: normal
Calling gl-functions from a thread other than the program's main thread
causes reproducible segfaults.
Example backtrace:
---------------------------------------------------------------------
#0 0xa79cdbef in _mesa_LoadIdentity () from /usr/lib/dri/r200_dri.so
#1 0xa7f5ac64 in glLoadIdentity () from /usr/lib/libGL.so.1
#2 0x0804ac85 in thread_loop () at GlxSyncTest.cpp:554
#3 0xa7eaa260 in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#4 0xa7d2529e in clone () from /lib/tls/i686/cmov/libc.so.6
---------------------------------------------------------------------
I've observed the very same behaviour on a Radeon (r200) and a Matrox
(mga) machine. A small example program code could be provided if it was of
help.
However, upgrading to the head of the mesa_6_4_branch in mesa cvs fixes
the bug for me. I presume the relevant commits are the following:
---------------------------------------------------------------------
Wed Mar 15 20:46:09 2006 UTC (5 months, 1 week ago) by brianp
Branch: mesa_6_4_branch
remove invalid assertion in _glapi_get_dispatch(), fixes additional
thread safety problem
---------------------------------------------------------------------
Wed Mar 15 20:32:48 2006 UTC (5 months, 1 week ago) by brianp
Branch: mesa_6_4_branch
thread safety fix from trunk
---------------------------------------------------------------------
How about incorporating the changes from the mesa_6_4_branch into the
debian package? There shouldn't be too disruptive changes in this
bugfix-only branch.
-- System Information:
Debian Release: testing/unstable
APT prefers testing
APT policy: (990, 'testing'), (500, 'unstable')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.16preempt
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Versions of packages libgl1-mesa-glx depends on:
ii libc6 2.3.6-15 GNU C Library: Shared libraries
ii libdrm2 2.0.1-1 Userspace interface to kernel DRM
ii libx11-6 2:1.0.0-8 X11 client-side library
ii libxext6 1:1.0.0-4 X11 miscellaneous extension librar
ii libxxf86vm1 1:1.0.0-4 X11 XFree86 video mode extension l
libgl1-mesa-glx recommends no packages.
-- no debconf information
--- End Message ---
--- Begin Message ---
Version: 6.5.0.cvs.20060524-1
On Wed, Sep 20, 2006 at 01:05:46AM +0200, Jan Gukelberger wrote:
> On Mon, 2006-09-18 at 17:50 -0700, Steve Langasek wrote:
> > On Tue, Sep 19, 2006 at 01:37:14AM +0200, Jan Gukelberger wrote:
> > > On Sat, 2006-09-16 at 02:25 -0700, Steve Langasek wrote:
> > > > Would you mind testing whether this bug is fixed for you in the version
> > > > of
> > > > libgl1-mesa-glx in experimental (6.5.0.cvs.20060524-1)?
> I can happily confirm that this bug is fixed in version
> 6.5.0.cvs.20060524-1.1.
> Tested on mga system: Upgraded all mesa packages to the aforementioned
> version and ran the test app previously segfaulting. No more problems
> noticeable.
Ok, marking as closed.
Thanks,
--
Steve Langasek Give me a lever long enough and a Free OS
Debian Developer to set it on, and I can move the world.
[EMAIL PROTECTED] http://www.debian.org/
--- End Message ---
