linux-kernel - [PATCH] cxgb4: fix memory leak of qe on error exit path

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Message-Id: <20161016225403.4108-1-colin.king@canonical.com>
Date:   Sun, 16 Oct 2016 23:54:03 +0100
From:   Colin King <colin.king@...onical.com>
To:     Hariprasad S <hariprasad@...lsio.com>, netdev@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] cxgb4: fix memory leak of qe on error exit path

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

A memory leak of qe occurs when t4_sched_queue_unbind fails,
so fix this by free'ing qe on the error exit path.

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/net/ethernet/chelsio/cxgb4/sched.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/chelsio/cxgb4/sched.c b/drivers/net/ethernet/chelsio/cxgb4/sched.c
index 539de76..cbd68a8 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/sched.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sched.c
@@ -210,8 +210,10 @@ static int t4_sched_queue_bind(struct port_info *pi, struct ch_sched_queue *p)
 
 	/* Unbind queue from any existing class */
 	err = t4_sched_queue_unbind(pi, p);
-	if (err)
+	if (err) {
+		t4_free_mem(qe);
 		goto out;
+	}
 
 	/* Bind queue to specified class */
 	memset(qe, 0, sizeof(*qe));
-- 
2.9.3