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drm/msm/mdp5: Fix mdp5_init error path for failed mdp5_kms allocation

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[ Upstream commit e4337877c5 ]

When allocation for mdp5_kms fails, calling mdp5_destroy() leads to undefined
behaviour, likely a nullptr exception or use-after-free troubles.

Signed-off-by: Roy Spliet <nouveau@spliet.org>
Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Roy Spliet
2020-06-30 15:38:25 -04:00
committed by Sasha Levin
parent 5365fc3132
commit f3d12f8fea
1 changed files with 2 additions and 1 deletions
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drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c
+2 -1
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@@ -769,7 +769,8 @@ static int mdp5_init(struct platform_device *pdev, struct drm_device *dev)
return 0;
fail:
mdp5_destroy(pdev);
if (mdp5_kms)
mdp5_destroy(pdev);
return ret;
}