diff options
| author | Dean Jenkins <Dean_Jenkins@mentor.com> | 2017-08-07 09:50:16 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-08-07 10:10:19 -0700 |
| commit | d0c8f338ab41438bdf8472cb4209d4ab54d439d5 (patch) | |
| tree | afd69174d5166583e8f7a2c6d36b6c4247a7a077 /drivers/net/usb/asix_devices.c | |
| parent | 960eb4eeaa47a3a5061a4e47e28411e85840ab2c (diff) | |
asix: Fix small memory leak in ax88772_unbind()
When Ethernet frames span mulitple URBs, the netdev buffer memory
pointed to by the asix_rx_fixup_info structure remains allocated
during the time gap between the 2 executions of asix_rx_fixup_internal().
This means that if ax88772_unbind() is called within this time
gap to free the memory of the parent private data structure then
a memory leak of the part filled netdev buffer memory will occur.
Therefore, create a new function asix_rx_fixup_common_free() to
free the memory of the netdev buffer and add a call to
asix_rx_fixup_common_free() from inside ax88772_unbind().
Consequently when an unbind occurs part way through receiving
an Ethernet frame, the netdev buffer memory that is holding part
of the received Ethernet frame will now be freed.
Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/usb/asix_devices.c')
| -rw-r--r-- | drivers/net/usb/asix_devices.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c index a3aa0a27dfe5..b2ff88e69a81 100644 --- a/drivers/net/usb/asix_devices.c +++ b/drivers/net/usb/asix_devices.c @@ -764,6 +764,7 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf) static void ax88772_unbind(struct usbnet *dev, struct usb_interface *intf) { + asix_rx_fixup_common_free(dev->driver_priv); kfree(dev->driver_priv); } |