diff mbox series

[v2,1/4] regex/mlx5: fix size of setup constants

Message ID 20210701063916.2016763-1-michaelba@nvidia.com (mailing list archive)
State Accepted, archived
Delegated to: Thomas Monjalon
Headers
Series [v2,1/4] regex/mlx5: fix size of setup constants |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Michael Baum July 1, 2021, 6:39 a.m. UTC 
  The constant representing the size of the metadata is defined as a
unsigned int variable with 32-bit.
Similarly the constant representing the maximal output is also defined
as a unsigned int variable with 32-bit.

There is potentially overflowing expression when those constants are
evaluated using 32-bit arithmetic, and then used in a context that
expects an expression of type size_t that might be 64 bit.

Change the size of the above constants to size_t.

Fixes: 30d604bb1504 ("regex/mlx5: fix type of setup constants")
Cc: stable@dpdk.org

Signed-off-by: Michael Baum <michaelba@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
---
v2: use size_t and uintptr_t instead of uint64_t.

 drivers/regex/mlx5/mlx5_regex_fastpath.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Thomas Monjalon July 22, 2021, 12:50 p.m. UTC | #1 
01/07/2021 08:39, Michael Baum:
> The constant representing the size of the metadata is defined as a
> unsigned int variable with 32-bit.
> Similarly the constant representing the maximal output is also defined
> as a unsigned int variable with 32-bit.
> 
> There is potentially overflowing expression when those constants are
> evaluated using 32-bit arithmetic, and then used in a context that
> expects an expression of type size_t that might be 64 bit.
> 
> Change the size of the above constants to size_t.
> 
> Fixes: 30d604bb1504 ("regex/mlx5: fix type of setup constants")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Michael Baum <michaelba@nvidia.com>
> Acked-by: Matan Azrad <matan@nvidia.com>

Series applied, thanks.
diff mbox series

Patch

diff --git a/drivers/regex/mlx5/mlx5_regex_fastpath.c b/drivers/regex/mlx5/mlx5_regex_fastpath.c
index b57e7d7794..910bc845f3 100644
--- a/drivers/regex/mlx5/mlx5_regex_fastpath.c
+++ b/drivers/regex/mlx5/mlx5_regex_fastpath.c
@@ -25,8 +25,8 @@ 
 #include "mlx5_regex.h"
 
 #define MLX5_REGEX_MAX_WQE_INDEX 0xffff
-#define MLX5_REGEX_METADATA_SIZE UINT32_C(64)
-#define MLX5_REGEX_MAX_OUTPUT RTE_BIT32(11)
+#define MLX5_REGEX_METADATA_SIZE ((size_t)64)
+#define MLX5_REGEX_MAX_OUTPUT (((size_t)1) << 11)
 #define MLX5_REGEX_WQE_CTRL_OFFSET 12
 #define MLX5_REGEX_WQE_METADATA_OFFSET 16
 #define MLX5_REGEX_WQE_GATHER_OFFSET 32