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 <[email protected]> Signed-off-by: David S. Miller <[email protected]>
AnTAVR · Mar 20, 2013 · f1e79e2 · f1e79e2
1 parent 90b2621
commit f1e79e2
Showing 1 changed file with 1 addition and 0 deletions.
diff --git 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();