netdev - [PATCH] negative groups in netlink

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Date:	Tue, 17 Jul 2007 14:26:04 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	David Miller <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>
Subject: [PATCH] negative groups in netlink_setsockopt

Reading netlink_setsockopt it's not immediately clear why there isn't a
bug when you pass in negative numbers, the reason being that the >=
comparison is really unsigned although 'val' is signed because
nlk->ngroups is unsigned. Make 'val' unsigned too.

Signed-off-by: Johannes Berg <johannes@...solutions.net>

---
 net/netlink/af_netlink.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- wireless-dev.orig/net/netlink/af_netlink.c	2007-07-17 14:05:14.580964463 +0200
+++ wireless-dev/net/netlink/af_netlink.c	2007-07-17 14:05:30.210964463 +0200
@@ -1012,7 +1012,8 @@ static int netlink_setsockopt(struct soc
 {
 	struct sock *sk = sock->sk;
 	struct netlink_sock *nlk = nlk_sk(sk);
-	int val = 0, err;
+	unsigned int val = 0;
+	int err;
 
 	if (level != SOL_NETLINK)
 		return -ENOPROTOOPT;


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