[dpdk-dev] [RFT] vmxnet3: coverity reported defect
Stephen Hemminger
stephen at networkplumber.org
Thu Apr 5 17:36:18 CEST 2018
I noticed Coverity defect in DPDK number 124563 was assigned to me.
It looks like vmxnet3 driver code doesn't handle case where host incorrectly
sends a frame with out setting SOP bit in first segment. This would lead to
rxq->start_seq being NULL.
Maybe something like this would fix it. I don't have VMware (or time) to test.
diff --git a/drivers/net/vmxnet3/vmxnet3_rxtx.c b/drivers/net/vmxnet3/vmxnet3_rxtx.c
index 57557492e0f5..3118d94add90 100644
--- a/drivers/net/vmxnet3/vmxnet3_rxtx.c
+++ b/drivers/net/vmxnet3/vmxnet3_rxtx.c
@@ -813,6 +813,13 @@ vmxnet3_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts)
RTE_ASSERT(rxd->btype == VMXNET3_RXD_BTYPE_BODY);
+ if (unlikely(start == NULL)) {
+ PMD_RX_LOG(ERR, "Missing sop");
+
+ rte_pktmbuf_free_seg(rxm);
+ goto rcd_done;
+ }
+
start->pkt_len += rxm->data_len;
start->nb_segs++;
PS: the email for the VMXNET3 maintainer Shrikrishna Khare <skhare at vmware.com> bounces.
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