[for-3.18,07/15] kaweth: fix oops upon failed memory allocation

Message ID 1501015526-32178-8-git-send-email-amit.pundir@linaro.org
State New
Headers show
Series
  • Stable candidates for 3.18.y
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Commit Message

Amit Pundir July 25, 2017, 8:45 p.m.
From: Oliver Neukum <oneukum@suse.com>


commit 575ced7f8090c1a4e91e2daf8da9352a6a1fc7a7 upstream.

Just return an error upon failure.

Signed-off-by: Oliver Neukum <oneukum@suse.com>

Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>

---
 drivers/net/usb/kaweth.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

-- 
2.7.4

Patch

diff --git a/drivers/net/usb/kaweth.c b/drivers/net/usb/kaweth.c
index 95ef45a5e9df..40f3fbf2ca01 100644
--- a/drivers/net/usb/kaweth.c
+++ b/drivers/net/usb/kaweth.c
@@ -1009,6 +1009,7 @@  static int kaweth_probe(
 	struct net_device *netdev;
 	const eth_addr_t bcast_addr = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
 	int result = 0;
+	int rv = -EIO;
 
 	dev_dbg(dev,
 		"Kawasaki Device Probe (Device number:%d): 0x%4.4x:0x%4.4x:0x%4.4x\n",
@@ -1049,6 +1050,10 @@  static int kaweth_probe(
 		/* Download the firmware */
 		dev_info(dev, "Downloading firmware...\n");
 		kaweth->firmware_buf = (__u8 *)__get_free_page(GFP_KERNEL);
+		if (!kaweth->firmware_buf) {
+			rv = -ENOMEM;
+			goto err_free_netdev;
+		}
 		if ((result = kaweth_download_firmware(kaweth,
 						      "kaweth/new_code.bin",
 						      100,
@@ -1209,7 +1214,7 @@  err_only_tx:
 err_free_netdev:
 	free_netdev(netdev);
 
-	return -EIO;
+	return rv;
 }
 
 /****************************************************************