drivers/char/pcmcia/ipwireless/hardware.c fix resource leak

commit 43f77e91eadbc290eb76a08110a039c809dde6c9 upstream

Coverity CID: 2172 RESOURCE_LEAK

When pool_allocate() tries to enlarge a packet, if it can not allocate enough
memory, it returns NULL without first freeing the old packet.

This patch just frees the packet first.

Signed-off-by: Darren Jenkins <darrenrjenkins@gmail.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/char/pcmcia/ipwireless/hardware.c b/drivers/char/pcmcia/ipwireless/hardware.c
index d3538668a8ee68f553e41f857f2eb25992208a8a..48c20402bc2b3611b62831a6b0aa5301bb0dd4c8 100644 (file)
--- a/drivers/char/pcmcia/ipwireless/hardware.c
+++ b/drivers/char/pcmcia/ipwireless/hardware.c
@@ -616,8 +616,10 @@ static struct ipw_rx_packet *pool_allocate(struct ipw_hardware *hw,
                packet = kmalloc(sizeof(struct ipw_rx_packet) +
                                old_packet->length + minimum_free_space,
                                GFP_ATOMIC);
-               if (!packet)
+               if (!packet) {
+                       kfree(old_packet);
                        return NULL;
+               }
                memcpy(packet, old_packet,
                                sizeof(struct ipw_rx_packet)
                                        + old_packet->length);