bond: fix stack smash in xstats
Building with stack smashing detection finds an off by one
in the bond xstats attribute parsing.
$ ip link xstats type bond dev bond0
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
bond0
LACPDU Rx 0
LACPDU Tx 0
LACPDU Unknown type Rx 0
LACPDU Illegal Rx 0
Marker Rx 0
Marker Tx 0
Marker response Rx 0
Marker response Tx 0
Marker unknown type Rx 0
*** stack smashing detected ***: terminated
Program received signal SIGABRT, Aborted.
Reported-by: z30015464 <zhongxuan2@huawei.com>
Fixes: 440c5075d662 ("ip: bond: add xstats support")
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
diff --git a/ip/iplink_bond.c b/ip/iplink_bond.c
index 19af67d..62dd907 100644
--- a/ip/iplink_bond.c
+++ b/ip/iplink_bond.c
@@ -852,7 +852,7 @@
const char *ifname = "";
int rem;
- parse_rtattr(bondtb, LINK_XSTATS_TYPE_MAX+1, RTA_DATA(attr),
+ parse_rtattr(bondtb, LINK_XSTATS_TYPE_MAX, RTA_DATA(attr),
RTA_PAYLOAD(attr));
if (!bondtb[LINK_XSTATS_TYPE_BOND])
return;
