From: Emil Velikov <[email protected]>
If we have an invalid display fed into the functions, the display lookup
will return NULL. Thus as we attempt to get the platform type, we'll
deref. it leading to a crash.
Keep in mind that this will not happen if Mesa is built without X11 or
when the legacy eglCreate*Surface codepaths are used.
An similar check was added with earlier commit 5e97b8f5ce9 ("egl: Fix
crashes in eglCreate*Surface), although it was only applicable when the
surfaceless platform is built.
Cc: [email protected]
Cc: Tapani Pälli <[email protected]>
Cc: Chad Versace <[email protected]>
Signed-off-by: Emil Velikov <[email protected]>
---
src/egl/main/eglapi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/egl/main/eglapi.c b/src/egl/main/eglapi.c
index c5e3955c48c..8146009da4f 100644
--- a/src/egl/main/eglapi.c
+++ b/src/egl/main/eglapi.c
@@ -923,7 +923,7 @@ static void *
_fixupNativeWindow(_EGLDisplay *disp, void *native_window)
{
#ifdef HAVE_X11_PLATFORM
- if (disp->Platform == _EGL_PLATFORM_X11 && native_window != NULL) {
+ if (disp && disp->Platform == _EGL_PLATFORM_X11 && native_window != NULL) {
/* The `native_window` parameter for the X11 platform differs between
* eglCreateWindowSurface() and eglCreatePlatformPixmapSurfaceEXT(). In
* eglCreateWindowSurface(), the type of `native_window` is an Xlib
@@ -985,7 +985,7 @@ _fixupNativePixmap(_EGLDisplay *disp, void *native_pixmap)
* `Pixmap*`. Convert `Pixmap*` to `Pixmap` because that's what
* dri2_x11_create_pixmap_surface() expects.
*/
- if (disp->Platform == _EGL_PLATFORM_X11 && native_pixmap != NULL)
+ if (disp && disp->Platform == _EGL_PLATFORM_X11 && native_pixmap != NULL)
return (void *)(* (Pixmap*) native_pixmap);
#endif
return native_pixmap;
--
2.14.0
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