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DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 Nov 2022 12:52:10.2023 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ead7d28d-2f89-409b-e5b4-08dabd9a38dc X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.117.160]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT026.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5216 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org The sysconf call can return a negative value (-1) on failure this will lead to posix_memalign to fail. This is not a realistic case which was found by the static checkers. Fixes: 3eb7488 ("net/mlx5/hws: add send layer") Signed-off-by: Alex Vesker Reviewed-by: Erez Shitrit --- drivers/net/mlx5/hws/mlx5dr_send.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/mlx5/hws/mlx5dr_send.c b/drivers/net/mlx5/hws/mlx5dr_send.c index 26904a9040..1e9953a38f 100644 --- a/drivers/net/mlx5/hws/mlx5dr_send.c +++ b/drivers/net/mlx5/hws/mlx5dr_send.c @@ -524,6 +524,7 @@ static int mlx5dr_send_ring_open_sq(struct mlx5dr_context *ctx, size_t sq_log_buf_sz; size_t buf_aligned; size_t sq_buf_sz; + size_t page_size; size_t buf_sz; int err; @@ -532,8 +533,9 @@ static int mlx5dr_send_ring_open_sq(struct mlx5dr_context *ctx, sq_buf_sz = 1 << (sq_log_buf_sz + log2above(MLX5_SEND_WQE_BB)); sq->reg_addr = queue->uar->reg_addr; - buf_aligned = align(sq_buf_sz, sysconf(_SC_PAGESIZE)); - err = posix_memalign((void **)&sq->buf, sysconf(_SC_PAGESIZE), buf_aligned); + page_size = sysconf(_SC_PAGESIZE); + buf_aligned = align(sq_buf_sz, page_size); + err = posix_memalign((void **)&sq->buf, page_size, buf_aligned); 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DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Nov 2022 09:54:49.0108 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a8b35b0e-f5c6-4140-166f-08dac0a61be6 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.117.161]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT115.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB6805 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org The sysconf call can return a negative value (-1) on failure this will lead to posix_memalign to fail. This is not a realistic case which was found by the static checkers. Coverity issue: 381674 Fixes: 3eb7488 ("net/mlx5/hws: add send layer") Signed-off-by: Alex Vesker Reviewed-by: Erez Shitrit Acked-by: Matan Azrad --- drivers/net/mlx5/hws/mlx5dr_send.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/mlx5/hws/mlx5dr_send.c b/drivers/net/mlx5/hws/mlx5dr_send.c index 26904a9040..1e9953a38f 100644 --- a/drivers/net/mlx5/hws/mlx5dr_send.c +++ b/drivers/net/mlx5/hws/mlx5dr_send.c @@ -524,6 +524,7 @@ static int mlx5dr_send_ring_open_sq(struct mlx5dr_context *ctx, size_t sq_log_buf_sz; size_t buf_aligned; size_t sq_buf_sz; + size_t page_size; size_t buf_sz; int err; @@ -532,8 +533,9 @@ static int mlx5dr_send_ring_open_sq(struct mlx5dr_context *ctx, sq_buf_sz = 1 << (sq_log_buf_sz + log2above(MLX5_SEND_WQE_BB)); sq->reg_addr = queue->uar->reg_addr; - buf_aligned = align(sq_buf_sz, sysconf(_SC_PAGESIZE)); - err = posix_memalign((void **)&sq->buf, sysconf(_SC_PAGESIZE), buf_aligned); + page_size = sysconf(_SC_PAGESIZE); + buf_aligned = align(sq_buf_sz, page_size); + err = posix_memalign((void **)&sq->buf, page_size, buf_aligned); if (err) { rte_errno = ENOMEM; return err;