From: Kangjie Lu <kjlu@umn.edu>
To: kjlu@umn.edu
Cc: pakki001@umn.edu,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Microchip Linux Driver Support <UNGLinuxDriver@microchip.com>,
"David S. Miller" <davem@davemloft.net>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] net: ocelot_board: fix a NULL pointer dereference
Date: Mon, 11 Mar 2019 01:36:32 -0500 [thread overview]
Message-ID: <20190311063632.21111-1-kjlu@umn.edu> (raw)
In case devm_kcalloc fails, the fix returns -ENOMEM to avoid
NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
---
drivers/net/ethernet/mscc/ocelot_board.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/mscc/ocelot_board.c b/drivers/net/ethernet/mscc/ocelot_board.c
index e7f90101d2e0..af68abf1632a 100644
--- a/drivers/net/ethernet/mscc/ocelot_board.c
+++ b/drivers/net/ethernet/mscc/ocelot_board.c
@@ -256,6 +256,8 @@ static int mscc_ocelot_probe(struct platform_device *pdev)
ocelot->ports = devm_kcalloc(&pdev->dev, ocelot->num_phys_ports,
sizeof(struct ocelot_port *), GFP_KERNEL);
+ if (!ocelot->ports)
+ return -ENOMEM;
INIT_LIST_HEAD(&ocelot->multicast);
ocelot_init(ocelot);
--
2.17.1
next reply other threads:[~2019-03-11 6:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-11 6:36 Kangjie Lu [this message]
2019-03-11 10:26 ` Alexandre Belloni
2019-03-11 14:14 ` Eric Dumazet
2019-03-11 17:39 ` David Miller
2019-03-23 3:33 ` Kangjie Lu
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