egl: Fix crashes in eglCreate*Surface()

Don't dereference a null EGLDisplay.

Fixes tests
  dEQP-EGL.functional.negative_api.create_pbuffer_surface
  dEQP-EGL.functional.negative_api.create_pixmap_surface

Reviewed-by: Mark Janes <mark.a.janes@intel.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=99038
Cc: "13.0" <mesa-stable@lists.freedesktop.org>

diff --git a/src/egl/main/eglapi.c b/src/egl/main/eglapi.c
index 33d5620..a349992 100644 (file)
--- a/src/egl/main/eglapi.c
+++ b/src/egl/main/eglapi.c
@@ -856,7 +856,7 @@ _eglCreateWindowSurfaceCommon(_EGLDisplay *disp, EGLConfig config,
       RETURN_EGL_ERROR(disp, EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
 
 #ifdef HAVE_SURFACELESS_PLATFORM
-   if (disp->Platform == _EGL_PLATFORM_SURFACELESS) {
+   if (disp && disp->Platform == _EGL_PLATFORM_SURFACELESS) {
       /* From the EGL_MESA_platform_surfaceless spec (v1):
        *
        *    eglCreatePlatformWindowSurface fails when called with a <display>
@@ -977,7 +977,7 @@ _eglCreatePixmapSurfaceCommon(_EGLDisplay *disp, EGLConfig config,
    EGLSurface ret;
 
 #if HAVE_SURFACELESS_PLATFORM
-   if (disp->Platform == _EGL_PLATFORM_SURFACELESS) {
+   if (disp && disp->Platform == _EGL_PLATFORM_SURFACELESS) {
       /* From the EGL_MESA_platform_surfaceless spec (v1):
        *
        *   [Like eglCreatePlatformWindowSurface,] eglCreatePlatformPixmapSurface