[PATCH 2/3] net/bonding: fix illegal memory accesses

[Chaoyong He]

From: Long Wu <long.wu at corigine.com>

CI found that overrunning array of 32 2-byte elements at
element index 65535 (byte offset 131071) by dereferencing
pointer "members + agg_new_idx".

Coverity issue: 403099
Fixes: 6d72657ce379 ("net/bonding: add other aggregator modes")
Cc: danielx.t.mrzyglod at intel.com
Cc: stable at dpdk.org

Signed-off-by: Long Wu <long.wu at corigine.com>
Reviewed-by: Chaoyong He <chaoyong.he at corigine.com>
Reviewed-by: Peng Zhang <peng.zhang at corigine.com>
---
 drivers/net/bonding/rte_eth_bond_8023ad.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/bonding/rte_eth_bond_8023ad.c b/drivers/net/bonding/rte_eth_bond_8023ad.c
index 677067870f..0be33f61e3 100644
--- a/drivers/net/bonding/rte_eth_bond_8023ad.c
+++ b/drivers/net/bonding/rte_eth_bond_8023ad.c
@@ -732,10 +732,14 @@ selection_logic(struct bond_dev_private *internals, uint16_t member_id)
 	switch (internals->mode4.agg_selection) {
 	case AGG_COUNT:
 		agg_new_idx = max_index(agg_count, members_count);
+		if (agg_new_idx >= members_count)
+			agg_new_idx = default_member;
 		new_agg_id = members[agg_new_idx];
 		break;
 	case AGG_BANDWIDTH:
 		agg_new_idx = max_index(agg_bandwidth, members_count);
+		if (agg_new_idx >= members_count)
+			agg_new_idx = default_member;
 		new_agg_id = members[agg_new_idx];
 		break;
 	case AGG_STABLE:
-- 
2.39.1