Message ID | 20220410092528.1001685-3-michaelba@nvidia.com (mailing list archive) |
---|---|
State | Accepted, archived |
Delegated to: | Raslan Darawsheh |
Headers |
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Sun, 10 Apr 2022 02:25:37 -0700 From: Michael Baum <michaelba@nvidia.com> To: <dev@dpdk.org> CC: Matan Azrad <matan@nvidia.com>, Raslan Darawsheh <rasland@nvidia.com>, Viacheslav Ovsiienko <viacheslavo@nvidia.com>, <stable@dpdk.org> Subject: [PATCH 2/3] net/mlx5: fix reading invalid index in RxQ array Date: Sun, 10 Apr 2022 12:25:27 +0300 Message-ID: <20220410092528.1001685-3-michaelba@nvidia.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220410092528.1001685-1-michaelba@nvidia.com> References: <20220410092528.1001685-1-michaelba@nvidia.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 4d1980de-50ec-41a1-1a98-08da1ad4149a X-MS-TrafficTypeDiagnostic: SA0PR12MB4509:EE_ X-Microsoft-Antispam-PRVS: <SA0PR12MB4509FCA70400A33A4A629532CCEB9@SA0PR12MB4509.namprd12.prod.outlook.com> X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Series |
net/mlx5: some RSS fixes
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Checks
Context | Check | Description |
---|---|---|
ci/checkpatch | success | coding style OK |
Commit Message
Michael Baum
April 10, 2022, 9:25 a.m. UTC
The mlx5_rxq_get() function gets RxQ index and return RxQ priv accordingly. When it gets an invalid index, it accesses out of array bounds which might cause undefined behavior. This patch adds a check for invalid indexes before accessing to array. Fixes: 0cedf34da78f ("net/mlx5: move Rx queue reference count") Cc: stable@dpdk.org Signed-off-by: Michael Baum <michaelba@nvidia.com> Acked-by: Matan Azrad <matan@nvidia.com> --- drivers/net/mlx5/mlx5_rxq.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c index f16795bac3..d41834f46f 100644 --- a/drivers/net/mlx5/mlx5_rxq.c +++ b/drivers/net/mlx5/mlx5_rxq.c @@ -2042,6 +2042,8 @@ mlx5_rxq_get(struct rte_eth_dev *dev, uint16_t idx) { struct mlx5_priv *priv = dev->data->dev_private; + if (idx >= priv->rxqs_n) + return NULL; MLX5_ASSERT(priv->rxq_privs != NULL); return (*priv->rxq_privs)[idx]; }