[Mesa-dev] [PATCH 1/3] radeon_cs_create_fence: check null return from radeon_winsys_bo_create

[Julien Isorce]

Fixes the following segmentation fault:

radeon_drm_cs_add_buffer (bo=0x0) at radeon_drm_cs.c
  -> if (!bo->handle)
(gdb) bt
0  radeon_drm_cs_add_buffer (bo=0x0) at radeon_drm_cs.c
1  0x00007fffe73575de in radeon_cs_create_fence radeon_drm_cs.c
2  0x00007fffe7358c48 in radeon_drm_cs_flush radeon_drm_cs.c

Signed-off-by: Julien Isorce <jisorce at oblong.com>
---
 src/gallium/winsys/radeon/drm/radeon_drm_cs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_cs.c b/src/gallium/winsys/radeon/drm/radeon_drm_cs.c
index d431bfc..1545fd8 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_cs.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_cs.c
@@ -750,6 +750,9 @@ radeon_cs_create_fence(struct radeon_winsys_cs *rcs)
     /* Create a fence, which is a dummy BO. */
     fence = cs->ws->base.buffer_create(&cs->ws->base, 1, 1,
                                        RADEON_DOMAIN_GTT, RADEON_FLAG_HANDLE);
+    if (!fence)
+       return NULL;
+
     /* Add the fence as a dummy relocation. */
     cs->ws->base.cs_add_buffer(rcs, fence,
                               RADEON_USAGE_READWRITE, RADEON_DOMAIN_GTT,
-- 
2.7.4