[dpdk-dev] [PATCH 2/3] ixgbe: prevent array overflow access in vector driver
Bruce Richardson
bruce.richardson at intel.com
Tue Dec 16 17:30:23 CET 2014
Switch the order of the conditions in a while loop, so we check the
range of "i" against the max, before using it to index into the array.
Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
---
lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c b/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c
index 3a30fa7..b54cb19 100644
--- a/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c
+++ b/lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c
@@ -489,7 +489,7 @@ ixgbe_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
unsigned i = 0;
if (rxq->pkt_first_seg == NULL) {
/* find the first split flag, and only reassemble then*/
- while (!split_flags[i] && i < nb_bufs)
+ while (i < nb_bufs && !split_flags[i])
i++;
if (i == nb_bufs)
return nb_bufs;
--
1.9.3
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