From: Darren Jenkins <darrenrjenkins@gmail.com>
Date: Sat, 12 Jul 2008 20:47:49 +0000 (-0700)
Subject: drivers/char/pcmcia/ipwireless/hardware.c fix resource leak
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=43f77e91eadbc290eb76a08110a039c809dde6c9;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

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

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>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/char/pcmcia/ipwireless/hardware.c b/drivers/char/pcmcia/ipwireless/hardware.c
index ba6340ae98af..929101ecbae2 100644
--- a/drivers/char/pcmcia/ipwireless/hardware.c
+++ b/drivers/char/pcmcia/ipwireless/hardware.c
@@ -590,8 +590,10 @@ 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);