nfc: change order inside nfc_se_io error path
authorFedor Pchelkin <pchelkin@ispras.ru>
Mon, 6 Mar 2023 21:26:50 +0000 (00:26 +0300)
committerJakub Kicinski <kuba@kernel.org>
Tue, 7 Mar 2023 21:37:05 +0000 (13:37 -0800)
cb_context should be freed on the error path in nfc_se_io as stated by
commit 25ff6f8a5a3b ("nfc: fix memory leak of se_io context in
nfc_genl_se_io").

Make the error path in nfc_se_io unwind everything in reverse order, i.e.
free the cb_context after unlocking the device.

Suggested-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230306212650.230322-1-pchelkin@ispras.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/nfc/netlink.c

index 348bf56..b9264e7 100644 (file)
@@ -1446,8 +1446,8 @@ static int nfc_se_io(struct nfc_dev *dev, u32 se_idx,
        return rc;
 
 error:
-       kfree(cb_context);
        device_unlock(&dev->dev);
+       kfree(cb_context);
        return rc;
 }