net: kalmia: fix memory leaks

In kalmia_init_and_get_ethernet_addr(), 'usb_buf' is allocated through
kmalloc(). In the following execution, if the 'status' returned by
kalmia_send_init_packet() is not 0, 'usb_buf' is not deallocated, leading
to memory leaks. To fix this issue, add the 'out' label to free 'usb_buf'.

Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/usb/kalmia.c b/drivers/net/usb/kalmia.c
index d62b6706a5376a6f50834721ec32297ff3481bc7..fc5895f85cee2f8256661f37de0802054826d421 100644 (file)
--- a/drivers/net/usb/kalmia.c
+++ b/drivers/net/usb/kalmia.c
@@ -113,16 +113,16 @@ kalmia_init_and_get_ethernet_addr(struct usbnet *dev, u8 *ethernet_addr)
        status = kalmia_send_init_packet(dev, usb_buf, ARRAY_SIZE(init_msg_1),
                                         usb_buf, 24);
        if (status != 0)
-               return status;
+               goto out;
 
        memcpy(usb_buf, init_msg_2, 12);
        status = kalmia_send_init_packet(dev, usb_buf, ARRAY_SIZE(init_msg_2),
                                         usb_buf, 28);
        if (status != 0)
-               return status;
+               goto out;
 
        memcpy(ethernet_addr, usb_buf + 10, ETH_ALEN);
-
+out:
        kfree(usb_buf);
        return status;
 }