linux-kernel - [PATCH 5.1 133/138] staging: fsl-dpaa2/ethsw: fix memory leak of switchdev

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Message-Id: <20190712121633.820876009@linuxfoundation.org>
Date:   Fri, 12 Jul 2019 14:19:57 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Colin Ian King <colin.king@...onical.com>
Subject: [PATCH 5.1 133/138] staging: fsl-dpaa2/ethsw: fix memory leak of switchdev_work

From: Colin Ian King <colin.king@...onical.com>

commit 5555ebbbac822b4fa28db2be15aaf98b3c21af26 upstream.

In the default event case switchdev_work is being leaked because
nothing is queued for work. Fix this by kfree'ing switchdev_work
before returning NOTIFY_DONE.

Addresses-Coverity: ("Resource leak")
Fixes: 44baaa43d7cc ("staging: fsl-dpaa2/ethsw: Add Freescale DPAA2 Ethernet Switch driver")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/staging/fsl-dpaa2/ethsw/ethsw.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
+++ b/drivers/staging/fsl-dpaa2/ethsw/ethsw.c
@@ -1086,6 +1086,7 @@ static int port_switchdev_event(struct n
 		dev_hold(dev);
 		break;
 	default:
+		kfree(switchdev_work);
 		return NOTIFY_DONE;
 	}