linux-kernel - [PATCH 1/1] NET: atlx, fix memory leak

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Message-Id: <1262796856-21919-1-git-send-email-jslaby@suse.cz>
Date:	Wed,  6 Jan 2010 17:54:16 +0100
From:	Jiri Slaby <jslaby@...e.cz>
To:	davem@...emloft.net
Cc:	linux-kernel@...r.kernel.org, jirislaby@...il.com,
	Jay Cliburn <jcliburn@...il.com>,
	Chris Snook <chris.snook@...il.com>,
	Jie Yang <jie.yang@...eros.com>,
	atl1-devel@...ts.sourceforge.net, netdev@...r.kernel.org
Subject: [PATCH 1/1] NET: atlx, fix memory leak

Stanse found a memory leak in atl2_get_eeprom. eeprom_buff is not
freed/assigned on all paths. Fix that.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Cc: Jay Cliburn <jcliburn@...il.com>
Cc: Chris Snook <chris.snook@...il.com>
Cc: Jie Yang <jie.yang@...eros.com>
Cc: atl1-devel@...ts.sourceforge.net
Cc: "David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org
---
 drivers/net/atlx/atl2.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/atlx/atl2.c b/drivers/net/atlx/atl2.c
index c0451d7..ec52529 100644
--- a/drivers/net/atlx/atl2.c
+++ b/drivers/net/atlx/atl2.c
@@ -1959,12 +1959,15 @@ static int atl2_get_eeprom(struct net_device *netdev,
 		return -ENOMEM;
 
 	for (i = first_dword; i < last_dword; i++) {
-		if (!atl2_read_eeprom(hw, i*4, &(eeprom_buff[i-first_dword])))
-			return -EIO;
+		if (!atl2_read_eeprom(hw, i*4, &(eeprom_buff[i-first_dword]))) {
+			ret_val = -EIO;
+			goto free;
+		}
 	}
 
 	memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 3),
 		eeprom->len);
+free:
 	kfree(eeprom_buff);
 
 	return ret_val;
-- 
1.6.5.7

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