https://bugs.freedesktop.org/show_bug.cgi?id=29229
Summary: Regression: glXChooseVisual segfaults when using
swrast.
Product: Mesa
Version: unspecified
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: GLX
AssignedTo: mesa-dev@lists.freedesktop.org
ReportedBy: nbow...@draconx.ca
Any program that calls glXChooseVisual segfaults when using swrast. This
obviously breaks every opengl-related program. Backtrace and bisection
results follow.
FWIW, I'm running latest git everything with on an Intel G45.
Backtrace:
#0 0x00007ffff7838c5e in fbconfigs_compatible (a=0x7fffffffd0f0,
b=0x3d434d4554535953) at glxcmds.c:1230
#1 0x00007ffff7839acf in glXChooseVisual (dpy=0x603010, screen=0,
attribList=0x7fffffffd2e0) at glxcmds.c:1521
#2 0x0000000000400f16 in main (argc=1, argv=0x7fffffffd448) at twoctx.c:62
Bisection:
(Note: The skipped commit failed differently: programs complained about not
finding an RGB GLX visual).
f972115d33e391499e049b83a1559959f2ca9f72 is the first bad commit
commit f972115d33e391499e049b83a1559959f2ca9f72
Author: Kristian Høgsberg <k...@bitplanet.net>
Date: Mon Jul 19 14:57:59 2010 -0400
glx: Add screen privates for dri drivers and moved some fields there
GLXscreenConfigs is badly named and a dumping ground for a lot of stuff.
This patch creates private screen structs for the dri drivers and moves
some of their fields over there.
:040000 040000 3ae7b0621d90871d19ba4ce2c41720dfddfe10fe
acce56f693cb384ed530edbb9c0525459386e2de M src
git bisect start
# bad: [8122baf8badfa9fe7a80bfc904ad7b6ddcdecb0c] softpipe: Check for NULL
pointer in sp_destroy_tile_cache().
git bisect bad 8122baf8badfa9fe7a80bfc904ad7b6ddcdecb0c
# bad: [c20a3628c7c6b7c41efe309b712bf93eb4e92039] glsl: remove invalid
_mesa_problem() call
git bisect bad c20a3628c7c6b7c41efe309b712bf93eb4e92039
# bad: [600c85efdb0ff498c1f62e74efbda9f7096a74d3] Revert "dri2: Remove an
unused variable."
git bisect bad 600c85efdb0ff498c1f62e74efbda9f7096a74d3
# good: [f9d11b8cee235dae42f757e21c2536391c07b3e8] i965: Mostly fix
glsl-max-varyings.
git bisect good f9d11b8cee235dae42f757e21c2536391c07b3e8
# bad: [4363d4d0b945c4ca6c303fb337e1fac39e6e1ad6] gallivm: fix indirect
addressing of constant buffer
git bisect bad 4363d4d0b945c4ca6c303fb337e1fac39e6e1ad6
# bad: [a7292f2920a28a190ca39ce530454a852ec36d59] glx: Move DRI CopySubBuffer
extension to DRI1 code
git bisect bad a7292f2920a28a190ca39ce530454a852ec36d59
# skip: [089fc37c6fa158824279e08e3b378ced94d6f803] glx: Move DRI1 specific
extensions and code to DRI1 screen private
git bisect skip 089fc37c6fa158824279e08e3b378ced94d6f803
# bad: [70887d517290060a80c7f5dd8c0ea0c834c4d91e] glx: Move __driScreen into
the dri screen privates
git bisect bad 70887d517290060a80c7f5dd8c0ea0c834c4d91e
# bad: [f972115d33e391499e049b83a1559959f2ca9f72] glx: Add screen privates for
dri drivers and moved some fields there
git bisect bad f972115d33e391499e049b83a1559959f2ca9f72
# good: [308e13ecd12a2fd894e5b509d5756bffc2035ec6] glx: Factor out common code
from dri2WaitGL() and dri2WaitX()
git bisect good 308e13ecd12a2fd894e5b509d5756bffc2035ec6
# good: [a296d96de45d38a6ed0b3c817334d443facc169b] glx: Rename various DRI
structs away from obnoxious __GLXfooRec convention
git bisect good a296d96de45d38a6ed0b3c817334d443facc169b
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