diff mbox series

net/virtio: fix uninitialized old_rss_key variable

Message ID 59c1e579917d1ddeeb80c553021a1d551ddb9b52.1641629424.git.wangyunjian@huawei.com (mailing list archive)
State Accepted, archived
Delegated to: Maxime Coquelin
Headers show
Series net/virtio: fix uninitialized old_rss_key variable | expand

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ci/iol-intel-Functional success Functional Testing PASS
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ci/iol-broadcom-Functional success Functional Testing PASS
ci/iol-broadcom-Performance success Performance Testing PASS
ci/iol-mellanox-Performance success Performance Testing PASS
ci/checkpatch success coding style OK

Commit Message

wangyunjian Jan. 8, 2022, 8:14 a.m. UTC
This patch fixes an issue that uninitialized old_rss_key
is used for restoring the rss_key.

Coverity issue: 373866
Fixes: 0c9d66207054 ("net/virtio: support RSS")
Cc: stable@dpdk.org

Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
---
 drivers/net/virtio/virtio_ethdev.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Xia, Chenbo Jan. 14, 2022, 7:14 a.m. UTC | #1
Hi Yunjuan,

> -----Original Message-----
> From: Yunjian Wang <wangyunjian@huawei.com>
> Sent: Saturday, January 8, 2022 4:14 PM
> To: dev@dpdk.org
> Cc: maxime.coquelin@redhat.com; Xia, Chenbo <chenbo.xia@intel.com>;
> dingxiaoxiong@huawei.com; xudingke@huawei.com; Yunjian Wang
> <wangyunjian@huawei.com>; stable@dpdk.org
> Subject: [dpdk-dev] [PATCH] net/virtio: fix uninitialized old_rss_key variable
> 
> This patch fixes an issue that uninitialized old_rss_key
> is used for restoring the rss_key.
> 
> Coverity issue: 373866
> Fixes: 0c9d66207054 ("net/virtio: support RSS")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
> ---
>  drivers/net/virtio/virtio_ethdev.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/virtio/virtio_ethdev.c
> b/drivers/net/virtio/virtio_ethdev.c
> index c2588369b2..7c445bfc48 100644
> --- a/drivers/net/virtio/virtio_ethdev.c
> +++ b/drivers/net/virtio/virtio_ethdev.c
> @@ -2028,7 +2028,8 @@ virtio_dev_rss_hash_update(struct rte_eth_dev *dev,
> 
>  	return 0;
>  restore_key:
> -	memcpy(hw->rss_key, old_rss_key, VIRTIO_NET_RSS_KEY_SIZE);
> +	if (rss_conf->rss_key && rss_conf->rss_key_len)
> +		memcpy(hw->rss_key, old_rss_key, VIRTIO_NET_RSS_KEY_SIZE);
>  restore_types:
>  	hw->rss_hash_types = old_hash_types;
> 
> --
> 2.27.0

Appreciate your effort with Coverity issue, thanks!

Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
Xia, Chenbo Jan. 27, 2022, 5:29 a.m. UTC | #2
> -----Original Message-----
> From: Yunjian Wang <wangyunjian@huawei.com>
> Sent: Saturday, January 8, 2022 4:14 PM
> To: dev@dpdk.org
> Cc: maxime.coquelin@redhat.com; Xia, Chenbo <chenbo.xia@intel.com>;
> dingxiaoxiong@huawei.com; xudingke@huawei.com; Yunjian Wang
> <wangyunjian@huawei.com>; stable@dpdk.org
> Subject: [dpdk-dev] [PATCH] net/virtio: fix uninitialized old_rss_key variable
> 
> This patch fixes an issue that uninitialized old_rss_key
> is used for restoring the rss_key.
> 
> Coverity issue: 373866
> Fixes: 0c9d66207054 ("net/virtio: support RSS")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
> ---
>  drivers/net/virtio/virtio_ethdev.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/virtio/virtio_ethdev.c
> b/drivers/net/virtio/virtio_ethdev.c
> index c2588369b2..7c445bfc48 100644
> --- a/drivers/net/virtio/virtio_ethdev.c
> +++ b/drivers/net/virtio/virtio_ethdev.c
> @@ -2028,7 +2028,8 @@ virtio_dev_rss_hash_update(struct rte_eth_dev *dev,
> 
>  	return 0;
>  restore_key:
> -	memcpy(hw->rss_key, old_rss_key, VIRTIO_NET_RSS_KEY_SIZE);
> +	if (rss_conf->rss_key && rss_conf->rss_key_len)
> +		memcpy(hw->rss_key, old_rss_key, VIRTIO_NET_RSS_KEY_SIZE);
>  restore_types:
>  	hw->rss_hash_types = old_hash_types;
> 
> --
> 2.27.0

Applied to next-virtio/main with headline fixed, thanks.
diff mbox series

Patch

diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index c2588369b2..7c445bfc48 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -2028,7 +2028,8 @@  virtio_dev_rss_hash_update(struct rte_eth_dev *dev,
 
 	return 0;
 restore_key:
-	memcpy(hw->rss_key, old_rss_key, VIRTIO_NET_RSS_KEY_SIZE);
+	if (rss_conf->rss_key && rss_conf->rss_key_len)
+		memcpy(hw->rss_key, old_rss_key, VIRTIO_NET_RSS_KEY_SIZE);
 restore_types:
 	hw->rss_hash_types = old_hash_types;