On 11/04/2019 13:24, Chris Wilson wrote:
As i915_requests are put into an RCU-freelist, they may get reused
before debugobjects notice them as being freed. On cleanup, explicitly
call i915_sw_fence_fini() so that the debugobject is properly tracked.
Reported-by: Mika Kuoppala <mika.kuopp...@linux.intel.com>
Fixes: b7404c7ecb38 ("drm/i915: Bump ready tasks ahead of busywaits")
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuopp...@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
---
drivers/gpu/drm/i915/i915_request.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/i915/i915_request.c
b/drivers/gpu/drm/i915/i915_request.c
index a7d87cfaabcb..b836721d3b13 100644
--- a/drivers/gpu/drm/i915/i915_request.c
+++ b/drivers/gpu/drm/i915/i915_request.c
@@ -101,6 +101,7 @@ static void i915_fence_release(struct dma_fence *fence)
* caught trying to reuse dead objects.
*/
i915_sw_fence_fini(&rq->submit);
+ i915_sw_fence_fini(&rq->semaphore);
kmem_cache_free(global.slab_requests, rq);
}
Reviewed-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
Regards,
Tvrtko
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