From 1257e0f804b7c2191691c0dbd455775944b9107f Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 13 Mar 2017 10:07:50 +0000 Subject: [PATCH] drm/i915/selftests: Fix error path for ggtt walk_hole() The patch 6e32ab3d4777: "drm/i915: Fill different pages of the GTT" from Feb 13, 2017, leads to the following static checker warning: drivers/gpu/drm/i915/selftests/i915_gem_gtt.c:583 walk_hole() error: 'vma' dereferencing possible ERR_PTR() Reported-by: Dan Carpenter Fixes: 6e32ab3d4777 ("drm/i915: Fill different pages of the GTT" Signed-off-by: Chris Wilson Cc: Joonas Lahtinen Cc: Matthew Auld Cc: Mika Kuoppala Cc: Link: http://patchwork.freedesktop.org/patch/msgid/20170313100750.2685-1-chris@chris-wilson.co.uk Reviewed-by: Matthew Auld --- drivers/gpu/drm/i915/selftests/i915_gem_gtt.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c index c4a39b7d7dd0..50710e3f1caa 100644 --- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c @@ -539,7 +539,7 @@ static int walk_hole(struct drm_i915_private *i915, vma = i915_vma_instance(obj, vm, NULL); if (IS_ERR(vma)) { err = PTR_ERR(vma); - goto err; + goto err_put; } for (addr = hole_start; @@ -550,7 +550,7 @@ static int walk_hole(struct drm_i915_private *i915, pr_err("%s bind failed at %llx + %llx [hole %llx- %llx] with err=%d\n", __func__, addr, vma->size, hole_start, hole_end, err); - goto err; + goto err_close; } i915_vma_unpin(vma); @@ -559,14 +559,14 @@ static int walk_hole(struct drm_i915_private *i915, pr_err("%s incorrect at %llx + %llx\n", __func__, addr, vma->size); err = -EINVAL; - goto err; + goto err_close; } err = i915_vma_unbind(vma); if (err) { pr_err("%s unbind failed at %llx + %llx with err=%d\n", __func__, addr, vma->size, err); - goto err; + goto err_close; } GEM_BUG_ON(drm_mm_node_allocated(&vma->node)); @@ -575,13 +575,14 @@ static int walk_hole(struct drm_i915_private *i915, "%s timed out at %llx\n", __func__, addr)) { err = -EINTR; - goto err; + goto err_close; } } -err: +err_close: if (!i915_vma_is_ggtt(vma)) i915_vma_close(vma); +err_put: i915_gem_object_put(obj); if (err) return err; -- 2.20.1