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From: longli@linuxonhyperv.com
To: "K. Y. Srinivasan" <kys@microsoft.com>,
	Haiyang Zhang <haiyangz@microsoft.com>,
	Stephen Hemminger <sthemmin@microsoft.com>
Cc: dev@dpdk.org, Long Li <longli@microsoft.com>
Subject: [dpdk-dev] [PATCH 3/4] net/netvsc: mark chim_index as NVS_CHIM_IDX_INVALID after freeing it
Date: Mon, 10 Aug 2020 19:33:13 -0700
Message-ID: <1597113194-90208-3-git-send-email-longli@linuxonhyperv.com> (raw)
In-Reply-To: <1597113194-90208-1-git-send-email-longli@linuxonhyperv.com>

From: Long Li <longli@microsoft.com>

chim_index could potentially be used in other hn_txdesc when re-allocated.
Mark it as invalid to prevent stale value being used.

Signed-off-by: Long Li <longli@microsoft.com>
---
 drivers/net/netvsc/hn_rxtx.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/netvsc/hn_rxtx.c b/drivers/net/netvsc/hn_rxtx.c
index c8c4ee10c..a388ff258 100644
--- a/drivers/net/netvsc/hn_rxtx.c
+++ b/drivers/net/netvsc/hn_rxtx.c
@@ -419,8 +419,10 @@ hn_nvs_send_completed(struct rte_eth_dev *dev, uint16_t queue_id,
 		++txq->stats.errors;
 	}
 
-	if (txd->chim_index != NVS_CHIM_IDX_INVALID)
+	if (txd->chim_index != NVS_CHIM_IDX_INVALID) {
 		hn_chim_free(hv, txd->chim_index);
+		txd->chim_index = NVS_CHIM_IDX_INVALID;
+	}
 
 	rte_pktmbuf_free(txd->m);
 	hn_txd_put(txq, txd);
-- 
2.25.1


  parent reply	other threads:[~2020-08-11  2:33 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-11  2:33 [dpdk-dev] [PATCH 1/4] net/netvsc: move rxbuf_info from per-device to per-queue longli
2020-08-11  2:33 ` [dpdk-dev] [PATCH 2/4] bus/vmbus: remove vmbus_send_interrupt longli
2020-08-11 15:31   ` Stephen Hemminger
2020-08-11  2:33 ` longli [this message]
2020-08-11 15:32   ` [dpdk-dev] [PATCH 3/4] net/netvsc: mark chim_index as NVS_CHIM_IDX_INVALID after freeing it Stephen Hemminger
2020-08-11  2:33 ` [dpdk-dev] [PATCH 4/4] net/netvsc: check for overflow on packet info from host longli
2020-08-11 15:42   ` Stephen Hemminger
2020-10-27 17:10   ` Luca Boccassi
2020-10-27 23:07     ` Ferruh Yigit
2020-10-28 11:08       ` [dpdk-dev] [dpdk-stable] " Luca Boccassi
2020-10-29  8:43         ` Ferruh Yigit
2020-08-16 23:11 ` [dpdk-dev] [PATCH 1/4] net/netvsc: move rxbuf_info from per-device to per-queue Stephen Hemminger
2020-08-19 15:36   ` Ferruh Yigit

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