diff options
| author | Jiri Slaby <jslaby@suse.cz> | 2016-05-17 08:35:29 +0200 |
|---|---|---|
| committer | Emil Velikov <emil.l.velikov@gmail.com> | 2016-05-23 12:07:47 +0100 |
| commit | a6ce91fe526a5dee4c79b9deffac6829d22dd805 (patch) | |
| tree | e0f327ef393b923cc018f68894179d7b72cb9540 /src/glx | |
| parent | 0f738fa23ee2220841ad293654c6394dcc5943a4 (diff) | |
glxcmds: glXGetFBConfigs, fix screen bounds
Bounds of screen are 0 (inclusive) and ScreenCount(dpy) (exclusive).
The upper bound was too ScreenCount(dpy) (inclusive).
This causes a crash invoked by java3d which passes down an invalid
screen:
6 0x00007f0e5198ba70 in <signal handler called> () at /lib64/libc.so.6
7 0x00007f0e14531e14 in glXGetFBConfigs (dpy=<optimized out>, screen=1, nelements=nelements@entry=0x7f0dab3c522c) at glxcmds.c:1660
8 0x00007f0e14532f7f in glXChooseFBConfig (dpy=<optimized out>, screen=<optimized out>, attribList=0x7f0dab3c54e0, nitems=0x7f0dab3c535c) at glxcmds.c:1611
9 0x00007f0e1478d29b in find_S_FBConfigs () at /usr/lib64/libj3dcore-ogl.so
10 0x00007f0e1478d3dc in find_S_S_FBConfigs () at /usr/lib64/libj3dcore-ogl.so
11 0x00007f0e1478d567 in find_AA_S_S_FBConfigs () at /usr/lib64/libj3dcore-ogl.so
12 0x00007f0e1478d728 in find_DB_AA_S_S_FBConfigs () at /usr/lib64/libj3dcore-ogl.so
13 0x00007f0e1478d97c in Java_javax_media_j3d_X11NativeConfigTemplate3D_chooseOglVisual () at /usr/lib64/libj3dcore-ogl.so
While ScreenCount(dpy) is actually 1:
(gdb) p dpy->nscreens
$2 = 1
screen=1 is passed to glXGetFBConfigs.
Fix this typo in glXGetFBConfigs.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=95456
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Diffstat (limited to 'src/glx')
| -rw-r--r-- | src/glx/glxcmds.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/glx/glxcmds.c b/src/glx/glxcmds.c index 63f492128b..46bc214081 100644 --- a/src/glx/glxcmds.c +++ b/src/glx/glxcmds.c @@ -1657,7 +1657,7 @@ glXGetFBConfigs(Display * dpy, int screen, int *nelements) *nelements = 0; if (priv && (priv->screens != NULL) - && (screen >= 0) && (screen <= ScreenCount(dpy)) + && (screen >= 0) && (screen < ScreenCount(dpy)) && (priv->screens[screen]->configs != NULL) && (priv->screens[screen]->configs->fbconfigID != (int) GLX_DONT_CARE)) { |