Re: [PATCH] drm: msm: fix possible memory leak in mdp5_crtc_cursor_set()

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On 2022/5/9 14:11, Hangyu Hua wrote:
drm_gem_object_lookup will call drm_gem_object_get inside. So cursor_bo
needs to be put when msm_gem_get_and_pin_iova fails.

Fixes: e172d10a9c4a ("drm/msm/mdp5: Add hardware cursor support")
Signed-off-by: Hangyu Hua <hbh25y@xxxxxxxxx>
---
  drivers/gpu/drm/msm/disp/mdp5/mdp5_crtc.c | 4 +++-
  1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_crtc.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_crtc.c
index b966cd69f99d..6a5f73f6a23b 100644
--- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_crtc.c
+++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_crtc.c
@@ -991,8 +991,10 @@ static int mdp5_crtc_cursor_set(struct drm_crtc *crtc,
ret = msm_gem_get_and_pin_iova(cursor_bo, kms->aspace,
  			&mdp5_crtc->cursor.iova);
-	if (ret)
+	if (ret) {
+		drm_gem_object_put(cursor_bo);
  		return -EINVAL;
+	}
pm_runtime_get_sync(&pdev->dev);

Gentel ping.



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