FAILED: patch "[PATCH] drm/amdgpu: fix memory leak in" failed to apply to 4.2-stable tree

The patch below does not apply to the 4.2-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From: Sudip Mukherjee <[email protected]>
Date: Thu, 8 Oct 2015 19:28:01 +0530
Subject: [PATCH] drm/amdgpu: fix memory leak in
amdgpu_vm_update_page_directory
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If amdgpu_ib_get() fails we returned the error code but we missed freeing ib.

index 1e14531353e0..53d551f2d839 100644
@@ -455,8 +455,10 @@ int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
 		return -ENOMEM;
 
 	r = amdgpu_ib_get(ring, NULL, ndw * 4, ib);
-	if (r)
+	if (r) {
+		kfree(ib);
 		return r;
+	}
 	ib->length_dw = 0;
 
 	/* walk over the address space and update the page directory */