From: Emil Velikov <emil.veli...@collabora.com>
One could easily introduce version 3 of the DRI2fenceExtension,
extending the struct, while not implementing the above function.
Thus we'll end up with NULL pointer, and dereferencing it won't fare
too well.
Fixes: 0201f01dc4e ("egl: add EGL_ANDROID_native_fence_sync")
Cc: Rob Clark <robcl...@freedesktop.org>
Signed-off-by: Emil Velikov <emil.veli...@collabora.com>
---
Yes the scenario doesn't happen too often ;-)
---
src/egl/drivers/dri2/egl_dri2.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index 936b7c5199e..69d1f8d258f 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -676,7 +676,8 @@ dri2_setup_screen(_EGLDisplay *disp)
disp->Extensions.KHR_wait_sync = EGL_TRUE;
if (dri2_dpy->fence->get_fence_from_cl_event)
disp->Extensions.KHR_cl_event2 = EGL_TRUE;
- if (dri2_dpy->fence->base.version >= 2) {
+ if (dri2_dpy->fence->base.version >= 2 &&
+ dri2_dpy->fence->get_capabilities) {
unsigned capabilities =
dri2_dpy->fence->get_capabilities(dri2_dpy->dri_screen);
disp->Extensions.ANDROID_native_fence_sync =
--
2.14.0
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