[dpdk-dev] [PATCH] net/i40e: fix mbuf leak

chenqiming_huawei at 163.com chenqiming_huawei at 163.com
Mon Aug 23 03:50:34 CEST 2021


From: Qiming Chen <chenqiming_huawei at 163.com>

A local test found that repeated port start and stop operations during
the continuous SSE vector bufflist receiving process will cause the mbuf
resource to run out. The final positioning is when the port is stopped,
the mbuf of the pkt_first_seg pointer is not released. Resources lead.
The patch scheme is to judge whether the pointer is empty when the port
is stopped, and release the corresponding mbuf if it is not empty.

Fixes: 5c9222058df7 ("i40e: move to drivers/net/")
Cc: stable at dpdk.org

Signed-off-by: Qiming Chen <chenqiming_huawei at 163.com>
---
 drivers/net/i40e/i40e_rxtx.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
index 026cda948c..e4dfde9171 100644
--- a/drivers/net/i40e/i40e_rxtx.c
+++ b/drivers/net/i40e/i40e_rxtx.c
@@ -2590,6 +2590,10 @@ i40e_reset_rx_queue(struct i40e_rx_queue *rxq)
 #endif /* RTE_LIBRTE_I40E_RX_ALLOW_BULK_ALLOC */
 	rxq->rx_tail = 0;
 	rxq->nb_rx_hold = 0;
+
+	if (rxq->pkt_first_seg != NULL)
+		rte_pktmbuf_free(rxq->pkt_first_seg);
+
 	rxq->pkt_first_seg = NULL;
 	rxq->pkt_last_seg = NULL;
 
-- 
2.30.1.windows.1



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