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Commit 8e934dbf authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915: Prevent uninitialised reads during error state capture 



error_bo and pinned_bo could be used uninitialised if there were no
active buffers.

Caught by kmemcheck.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
parent b705120e

drivers/gpu/drm/i915/i915_irq.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -846,6 +846,8 @@ static void i915_capture_error_state(struct drm_device *dev) 
		i++;

		i++;

	error->pinned_bo_count = i - error->active_bo_count;

	error->pinned_bo_count = i - error->active_bo_count;





	error->active_bo = NULL;

	error->pinned_bo = NULL;

	if (i) {

	if (i) {

		error->active_bo = kmalloc(sizeof(*error->active_bo)*i,

		error->active_bo = kmalloc(sizeof(*error->active_bo)*i,

					   GFP_ATOMIC);

					   GFP_ATOMIC);