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drm: Avoid oops in GEM execbuffers with bad arguments.
author
Eric Anholt
<eric@anholt.net>
Wed, 10 Sep 2008 21:22:49 +0000
(14:22 -0700)
committer
Dave Airlie
<airlied@linux.ie>
Fri, 17 Oct 2008 21:10:52 +0000
(07:10 +1000)
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
drivers/gpu/drm/i915/i915_gem.c
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diff --git
a/drivers/gpu/drm/i915/i915_gem.c
b/drivers/gpu/drm/i915/i915_gem.c
index
5fe5034
..
29d9d21
100644
(file)
--- a/
drivers/gpu/drm/i915/i915_gem.c
+++ b/
drivers/gpu/drm/i915/i915_gem.c
@@
-1763,6
+1763,10
@@
i915_gem_execbuffer(struct drm_device *dev, void *data,
(int) args->buffers_ptr, args->buffer_count, args->batch_len);
#endif
+ if (args->buffer_count < 1) {
+ DRM_ERROR("execbuf with %d buffers\n", args->buffer_count);
+ return -EINVAL;
+ }
/* Copy in the exec list from userland */
exec_list = drm_calloc(sizeof(*exec_list), args->buffer_count,
DRM_MEM_DRIVER);