netdev - [PATCH 2/4][MAC80211]: Fix not checked kmalloc() result.

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Date:	Tue, 06 May 2008 18:49:02 +0400
From:	Pavel Emelyanov <xemul@...nvz.org>
To:	Johannes Berg <johannes@...solutions.net>,
	"John W. Linville" <linville@...driver.com>
CC:	David Miller <davem@...emloft.net>, linux-wireless@...r.kernel.org,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: [PATCH 2/4][MAC80211]: Fix not checked kmalloc() result.

The new_node kmallocation is not checked for success, so add
this check.

BTW, it also happens under the read_lock.

Signed-off-by: Pavel Emelyanov <xemul@...nvz.org>

---
 net/mac80211/mesh_pathtbl.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/net/mac80211/mesh_pathtbl.c b/net/mac80211/mesh_pathtbl.c
index 727aa52..1d2d051 100644
--- a/net/mac80211/mesh_pathtbl.c
+++ b/net/mac80211/mesh_pathtbl.c
@@ -164,13 +164,19 @@ int mesh_path_add(u8 *dst, struct net_device *dev)
 		err = -ENOMEM;
 		goto endadd2;
 	}
+	new_node = kmalloc(sizeof(struct mpath_node), GFP_KERNEL);
+	if (!new_node) {
+		kfree(new_mpath);
+		atomic_dec(&sdata->u.sta.mpaths);
+		err = -ENOMEM;
+		goto endadd2;
+	}
 
 	read_lock(&pathtbl_resize_lock);
 	memcpy(new_mpath->dst, dst, ETH_ALEN);
 	new_mpath->dev = dev;
 	new_mpath->flags = 0;
 	skb_queue_head_init(&new_mpath->frame_queue);
-	new_node = kmalloc(sizeof(struct mpath_node), GFP_KERNEL);
 	new_node->mpath = new_mpath;
 	new_mpath->timer.data = (unsigned long) new_mpath;
 	new_mpath->timer.function = mesh_path_timer;
-- 
1.5.3.4

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