From: Masatake YAMATO <yamato@redhat.com>
Date: Tue, 19 Mar 2013 01:47:27 +0000 (+0000)
Subject: genetlink: trigger BUG_ON if a group name is too long
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f1e79e208076ffe7bad97158275f1c572c04f5c7;p=linux.git

genetlink: trigger BUG_ON if a group name is too long

Trigger BUG_ON if a group name is longer than GENL_NAMSIZ.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index f2aabb6f41058..5a55be3f17a54 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -142,6 +142,7 @@ int genl_register_mc_group(struct genl_family *family,
 	int err = 0;
 
 	BUG_ON(grp->name[0] == '\0');
+	BUG_ON(memchr(grp->name, '\0', GENL_NAMSIZ) == NULL);
 
 	genl_lock();