egl_dri2: NULL check for EGLNativeWindowType

Some application calls eglCreateWindowSurface with
EGLNativeWindowType parameter having zero value. It causes SEGV
and disturbs error handling like EGL_NO_SURFACE.

Signed-off-by: Elvis Lee <kwangwoong.lee@lge.com>
Signed-off-by: Brian Paul <brianp@vmware.com>

diff --git a/src/egl/drivers/dri2/platform_drm.c b/src/egl/drivers/dri2/platform_drm.c
index 54067ff78146decc87de25ce9720ee358b81126f..9aafb525b93c5c74accb2414027bd6c8f433c6ad 100644 (file)
--- a/src/egl/drivers/dri2/platform_drm.c
+++ b/src/egl/drivers/dri2/platform_drm.c
@@ -108,6 +108,8 @@ dri2_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
 
    switch (type) {
    case EGL_WINDOW_BIT:
+      if (!window)
+         return NULL;
       surf = gbm_dri_surface((struct gbm_surface *) window);
       dri2_surf->gbm_surf = surf;
       dri2_surf->base.Width =  surf->base.width;