[Mesa-dev] [Bug 32879] New: egl_glx driver segfaults with NULL config

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=32879

           Summary: egl_glx driver segfaults with NULL config
           Product: Mesa
           Version: git
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Other
        AssignedTo: mesa-dev at lists.freedesktop.org
        ReportedBy: nobled at dreamwidth.org


egl_dri2 seems to handle this fine, but egl_glx tries to dereference it in this
function:

static int
GLX_egl_config_index(_EGLConfig *conf)
{
   struct GLX_egl_config *GLX_conf = GLX_egl_config(conf);
   return GLX_conf->index;
}

So it segfaults when it tries to create a context on this line in
GLX_eglCreateContext:

      GLX_ctx->context =
         glXCreateNewContext(GLX_dpy->dpy,
                             GLX_dpy->fbconfigs[GLX_egl_config_index(conf)],
                             GLX_RGBA_TYPE,
                             GLX_ctx_shared ? GLX_ctx_shared->context : NULL,
                             GL_TRUE);

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