[1/7] net/bnxt: fix dereference before null check
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Message ID 20191014000120.3020-2-ajit.khaparde@broadcom.com
State Accepted, archived
Headers show
Series
  • patchset for bnxt
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Context Check Description
ci/checkpatch success coding style OK
ci/iol-compilation success Compile Testing PASS
ci/iol-intel-Performance success Performance Testing PASS
ci/Intel-compilation success Compilation OK
ci/iol-mellanox-Performance success Performance Testing PASS

Commit Message

Ajit Khaparde Oct. 14, 2019, 12:01 a.m. UTC 
From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>

This patch fixes potential null pointer access in bnxt_alloc_ag_data().
Fix to return an error if null check is true.

Fixes: daef48efe5e5 ("net/bnxt: support set MTU")
Cc: stable@dpdk.org

Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
---
 drivers/net/bnxt/bnxt_rxr.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

Patch
diff mbox series 

diff --git a/drivers/net/bnxt/bnxt_rxr.c b/drivers/net/bnxt/bnxt_rxr.c
index f0f9b020b1..03dae571b6 100644
--- a/drivers/net/bnxt/bnxt_rxr.c
+++ b/drivers/net/bnxt/bnxt_rxr.c
@@ -63,18 +63,22 @@  static inline int bnxt_alloc_ag_data(struct bnxt_rx_queue *rxq,
 	struct bnxt_sw_rx_bd *rx_buf = &rxr->ag_buf_ring[prod];
 	struct rte_mbuf *mbuf;
 
+	if (rxbd == NULL) {
+		PMD_DRV_LOG(ERR, "Jumbo Frame. rxbd is NULL\n");
+		return -EINVAL;
+	}
+
+	if (rx_buf == NULL) {
+		PMD_DRV_LOG(ERR, "Jumbo Frame. rx_buf is NULL\n");
+		return -EINVAL;
+	}
+
 	mbuf = __bnxt_alloc_rx_data(rxq->mb_pool);
 	if (!mbuf) {
 		rte_atomic64_inc(&rxq->rx_mbuf_alloc_fail);
 		return -ENOMEM;
 	}
 
-	if (rxbd == NULL)
-		PMD_DRV_LOG(ERR, "Jumbo Frame. rxbd is NULL\n");
-	if (rx_buf == NULL)
-		PMD_DRV_LOG(ERR, "Jumbo Frame. rx_buf is NULL\n");
-
-
 	rx_buf->mbuf = mbuf;
 	mbuf->data_off = RTE_PKTMBUF_HEADROOM;