Fix off by one in nested attribute management.

Fixes segv in:
  tc qdisc show dev eth1
due to uninitialized attribute table.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>

diff --git a/lib/libnetlink.c b/lib/libnetlink.c
index 12883fe11f66c4bf709e98e81fcfb83e8b2e34ea..d13596fa2d9b406309bca462f9e189a438afaeea 100644 (file)
--- a/lib/libnetlink.c
+++ b/lib/libnetlink.c
@@ -632,6 +632,6 @@ int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rt
                rta = RTA_DATA(rta) + RTA_ALIGN(len);
                return parse_rtattr_nested(tb, max, rta);
        }
-       memset(tb, 0, sizeof(struct rtattr *) * max);
+       memset(tb, 0, sizeof(struct rtattr *) * (max + 1));
        return 0;
 }