Re: [PATCH] Double-free in cx23885_initdev [sls][spam-bayes]

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Thanks for the patch, much appreciated.

- Steve

Florin Malita wrote:
Both cx23885_initdev and cx23885_dev_setup free the device in their error path so a failure in the latter causes a double-free. Since cx23885_dev_setup is only called from cx23885_initdev, it should be safe to remove its deallocation and leave the cleanup up to the allocating function.

Coverity CID 1922.

Signed-off-by: Florin Malita <[email protected]>
---

 drivers/media/video/cx23885/cx23885-core.c |    6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/media/video/cx23885/cx23885-core.c b/drivers/media/video/cx23885/cx23885-core.c
index af16505..3cdd136 100644
--- a/drivers/media/video/cx23885/cx23885-core.c
+++ b/drivers/media/video/cx23885/cx23885-core.c
@@ -793,7 +793,7 @@ static int cx23885_dev_setup(struct cx23885_dev *dev)
 		       dev->pci->subsystem_device);
cx23885_devcount--;
-		goto fail_free;
+		return -ENODEV;
 	}
/* PCIe stuff */
@@ -835,10 +835,6 @@ static int cx23885_dev_setup(struct cx23885_dev *dev)
 	}
return 0;
-
-fail_free:
-	kfree(dev);
-	return -ENODEV;
 }
void cx23885_dev_unregister(struct cx23885_dev *dev)


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