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st/mesa: don't dereference stObj->pt if NULL

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It seems a user app can get us into this state, I trigger the fail
running fbo-maxsize inside virgl, it fails to create the backing
storage for the texture object, but then segfaults here when it
should fail the completeness test.

Cc: "9.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
(cherry picked from commit 2f508f244e)
This commit is contained in:
Dave Airlie 2013-09-10 14:46:23 +10:00 • committed by Carl Worth
parent faec15dc7a
commit 3801e9a87e
1 changed files with 1 additions and 1 deletions
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src/mesa/state_tracker/st_cb_fbo.c
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@ -502,7 +502,7 @@ st_validate_attachment(struct gl_context *ctx,
if (att->Type != GL_TEXTURE)
return GL_TRUE;
if (!stObj)
if (!stObj || !stObj->pt)
return GL_FALSE;
format = stObj->pt->format;