From e8188c461ee015ba0b9ab2fc82dbd5ebca5a5532 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Thomas=20Hellstr=C3=B6m?= Date: Mon, 26 Jun 2023 11:14:49 +0200 Subject: [PATCH] drm/ttm: Don't leak a resource on eviction error MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit On eviction errors other than -EMULTIHOP we were leaking a resource. Fix. v2: - Avoid yet another goto (Andi Shyti) Fixes: 403797925768 ("drm/ttm: Fix multihop assert on eviction.") Cc: Andrey Grodzovsky Cc: Christian König Cc: Christian Koenig Cc: Huang Rui Cc: dri-devel@lists.freedesktop.org Cc: # v5.15+ Signed-off-by: Thomas Hellström Reviewed-by: Nirmoy Das #v1 Reviewed-by: Andi Shyti Reviewed-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20230626091450.14757-4-thomas.hellstrom@linux.intel.com --- drivers/gpu/drm/ttm/ttm_bo.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index bd5dae4d16249..d364639a2752b 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -458,18 +458,18 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo, goto out; } -bounce: - ret = ttm_bo_handle_move_mem(bo, evict_mem, true, ctx, &hop); - if (ret == -EMULTIHOP) { + do { + ret = ttm_bo_handle_move_mem(bo, evict_mem, true, ctx, &hop); + if (ret != -EMULTIHOP) + break; + ret = ttm_bo_bounce_temp_buffer(bo, &evict_mem, ctx, &hop); - if (ret) { - if (ret != -ERESTARTSYS && ret != -EINTR) - pr_err("Buffer eviction failed\n"); - ttm_resource_free(bo, &evict_mem); - goto out; - } - /* try and move to final place now. */ - goto bounce; + } while (!ret); + + if (ret) { + ttm_resource_free(bo, &evict_mem); + if (ret != -ERESTARTSYS && ret != -EINTR) + pr_err("Buffer eviction failed\n"); } out: return ret; -- 2.30.2