net/bonding: fix array overflow in Rx burst
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Commit Message
In bond_ethdev_rx_burst() function, we check the validity of the
'active_slave' as this code:
if (++active_slave == slave_count)
active_slave = 0;
However, the value of 'active_slave' maybe equal to 'slave_count',
when a slave is down. This is wrong and it can cause buffer overflow.
This patch fixes the issue by using '>=' instead of '=='.
Fixes: e1110e977648 ("net/bonding: fix Rx slave fairness")
Cc: stable@dpdk.org
Signed-off-by: Lei Ji <jilei8@huawei.com>
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
---
drivers/net/bonding/rte_eth_bond_pmd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
@@ -82,7 +82,7 @@ bond_ethdev_rx_burst(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
bufs + num_rx_total, nb_pkts);
num_rx_total += num_rx_slave;
nb_pkts -= num_rx_slave;
- if (++active_slave == slave_count)
+ if (++active_slave >= slave_count)
active_slave = 0;
}