From: Chris Wilson <[email protected]> [ Upstream commit 1618bdb89b5d8b47edf42d9c6ea96ecf001ad625 ]
Before we return the request back to the kmem_cache after a failed i915_gem_request_alloc(), we should assert that it has not been added to any global state tracking. Signed-off-by: Chris Wilson <[email protected]> Reviewed-by: Joonas Lahtinen <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected] Signed-off-by: Sasha Levin <[email protected]> --- drivers/gpu/drm/i915/i915_gem_request.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_gem_request.c b/drivers/gpu/drm/i915/i915_gem_request.c index 8832f8ec1583..71e284d7c640 100644 --- a/drivers/gpu/drm/i915/i915_gem_request.c +++ b/drivers/gpu/drm/i915/i915_gem_request.c @@ -455,6 +455,11 @@ i915_gem_request_alloc(struct intel_engine_cs *engine, return req; err_ctx: + /* Make sure we didn't add ourselves to external state before freeing */ + GEM_BUG_ON(!list_empty(&req->active_list)); + GEM_BUG_ON(!list_empty(&req->priotree.signalers_list)); + GEM_BUG_ON(!list_empty(&req->priotree.waiters_list)); + i915_gem_context_put(ctx); err: kmem_cache_free(dev_priv->requests, req); -- 2.11.0
