On 06/26/2013 02:42 PM, Chad Versace wrote:
If allocation fails in intel_miptree_create_layout(), don't proceed to
dereference the miptree. Return an early NULL.

Fixes static analysis error reported by Klocwork.

Note: This is a candidate for the 9.1 branch.
Signed-off-by: Chad Versace <chad.vers...@linux.intel.com>

Reviewed-by: Ian Romanick <ian.d.roman...@intel.com>

Too bad this didn't land before the split. The cherry-pick will probably be annoying now. :( Alas.

---
  src/mesa/drivers/dri/i915/intel_mipmap_tree.c | 2 ++
  src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 2 ++
  2 files changed, 4 insertions(+)

diff --git a/src/mesa/drivers/dri/i915/intel_mipmap_tree.c 
b/src/mesa/drivers/dri/i915/intel_mipmap_tree.c
index 1776a4b..058cfbe 100644
--- a/src/mesa/drivers/dri/i915/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i915/intel_mipmap_tree.c
@@ -260,6 +260,8 @@ intel_miptree_create_layout(struct intel_context *intel,
                              GLuint num_samples)
  {
     struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
+   if (!mt)
+      return NULL;

     DBG("%s target %s format %s level %d..%d <-- %p\n", __FUNCTION__,
         _mesa_lookup_enum_by_nr(target),
diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c 
b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index 1776a4b..058cfbe 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -260,6 +260,8 @@ intel_miptree_create_layout(struct intel_context *intel,
                              GLuint num_samples)
  {
     struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
+   if (!mt)
+      return NULL;

     DBG("%s target %s format %s level %d..%d <-- %p\n", __FUNCTION__,
         _mesa_lookup_enum_by_nr(target),


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