From ba9d67f359f0b92bfb409e0fa4cb33276ca3d395 Mon Sep 17 00:00:00 2001 From: Qiming Chen Date: Mon, 23 Aug 2021 09:50:34 +0800 Subject: [PATCH] net/i40e: fix mbuf leak [ upstream commit 4b458675d3df13d1a35db959fe97a04a132788b2 ] 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 leak. 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: 4861cde46116 ("i40e: new poll mode driver") Signed-off-by: Qiming Chen Acked-by: Qi Zhang --- 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 6cba729639..0d5c721b52 100644 --- a/drivers/net/i40e/i40e_rxtx.c +++ b/drivers/net/i40e/i40e_rxtx.c @@ -2487,6 +2487,10 @@ 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;