[Mesa-dev] [PATCH] egl_dri2: Fix segmentation fault

[Paulo Alcantara]

The segmentation fault occurs when DRI2 is not loaded up and
dri2_setup_screen() function deferences dri2_dpy->dri2 (since it's NULL
at this point).

This patch fixes the segmentation fault by checking if dri2 pointer is
not NULL before deferencing it.

Signed-off-by: Paulo Alcantara <pcacjr at profusion.mobi>
---
 src/egl/drivers/dri2/egl_dri2.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index 423d18d..7326b85 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -481,7 +481,7 @@ dri2_setup_screen(_EGLDisplay *disp)
    assert(dri2_dpy->dri2 || dri2_dpy->swrast);
    disp->Extensions.KHR_surfaceless_context = EGL_TRUE;
 
-   if (dri2_dpy->dri2->base.version >= 3) {
+   if (dri2_dpy->dri2 && dri2_dpy->dri2->base.version >= 3) {
       disp->Extensions.KHR_create_context = EGL_TRUE;
 
       if (dri2_dpy->robustness)
-- 
1.7.9.5