diff mbox series

[v2] net/iavf: fix mbuf leak

Message ID 20210916140400.1982-1-chenqiming_huawei@163.com (mailing list archive)
State Accepted
Delegated to: Qi Zhang
Headers show
Series [v2] net/iavf: fix mbuf leak | expand

Checks

Context Check Description
ci/iol-x86_64-compile-testing warning Testing issues
ci/iol-aarch64-compile-testing success Testing PASS
ci/intel-Testing fail Testing issues
ci/Intel-compilation success Compilation OK
ci/github-robot: build success github build: passed
ci/checkpatch success coding style OK

Commit Message

Qiming Chen Sept. 16, 2021, 2:04 p.m. UTC
In the iavf_dev_rx_queue_start function, if the iavf_switch_queue
or iavf_switch_queue_lv function fails, the previously applied mbuf
is not released, resulting in leakage. The patch fixes the problem.

Fixes: 9cf9c02bf6ee ("net/iavf: add enable/disable queues for large VF")
Cc: stable@dpdk.org

Signed-off-by: Qiming Chen <chenqiming_huawei@163.com>
---
v2:
  Solve the potential mbuf leak of the alloc_rxq_mbufs function itself.
---
 drivers/net/iavf/iavf_rxtx.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

Comments

Zhang, Qi Z Sept. 22, 2021, 7:04 a.m. UTC | #1
> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Qiming Chen
> Sent: Thursday, September 16, 2021 10:04 PM
> To: dev@dpdk.org
> Cc: Xing, Beilei <beilei.xing@intel.com>; Wu, Jingjing <jingjing.wu@intel.com>;
> Qiming Chen <chenqiming_huawei@163.com>; stable@dpdk.org
> Subject: [dpdk-dev] [PATCH v2] net/iavf: fix mbuf leak
> 
> In the iavf_dev_rx_queue_start function, if the iavf_switch_queue or
> iavf_switch_queue_lv function fails, the previously applied mbuf is not released,
> resulting in leakage. The patch fixes the problem.
> 
> Fixes: 9cf9c02bf6ee ("net/iavf: add enable/disable queues for large VF")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Qiming Chen <chenqiming_huawei@163.com>

Acked-by: Qi Zhang <qi.z.zhang@intel.com>

Applied to dpdk-next-net-intel.

Thanks
Qi
diff mbox series

Patch

diff --git a/drivers/net/iavf/iavf_rxtx.c b/drivers/net/iavf/iavf_rxtx.c
index e33fe4576b..7ec4f241e2 100644
--- a/drivers/net/iavf/iavf_rxtx.c
+++ b/drivers/net/iavf/iavf_rxtx.c
@@ -274,11 +274,15 @@  alloc_rxq_mbufs(struct iavf_rx_queue *rxq)
 	volatile union iavf_rx_desc *rxd;
 	struct rte_mbuf *mbuf = NULL;
 	uint64_t dma_addr;
-	uint16_t i;
+	uint16_t i, j;
 
 	for (i = 0; i < rxq->nb_rx_desc; i++) {
 		mbuf = rte_mbuf_raw_alloc(rxq->mp);
 		if (unlikely(!mbuf)) {
+			for (j = 0; j < i; j++) {
+				rte_pktmbuf_free_seg(rxq->sw_ring[j]);
+				rxq->sw_ring[j] = NULL;
+			}
 			PMD_DRV_LOG(ERR, "Failed to allocate mbuf for RX");
 			return -ENOMEM;
 		}
@@ -848,12 +852,14 @@  iavf_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 	else
 		err = iavf_switch_queue_lv(adapter, rx_queue_id, true, true);
 
-	if (err)
+	if (err) {
+		release_rxq_mbufs(rxq);
 		PMD_DRV_LOG(ERR, "Failed to switch RX queue %u on",
 			    rx_queue_id);
-	else
+	} else {
 		dev->data->rx_queue_state[rx_queue_id] =
 			RTE_ETH_QUEUE_STATE_STARTED;
+	}
 
 	return err;
 }