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| author | Justin Stitt <justinstitt@google.com> | 2023-10-12 00:04:37 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-10-14 03:10:28 +0300 |
| commit | 88fca39b660b97651fbf5ba18074b7999fab98a7 (patch) | |
| tree | 5f4d55383a72f2a5823fa858db2150b113ecb5a5 | |
| parent | d273e99b5623bba5a9b63c18ee5ef597c2fdabc1 (diff) | |
| download | linux-88fca39b660b97651fbf5ba18074b7999fab98a7.tar.xz | |
net/mlx4_core: replace deprecated strncpy with strscpy
`strncpy` is deprecated for use on NUL-terminated destination strings
[1] and as such we should prefer more robust and less ambiguous string
interfaces.
We expect `dst` to be NUL-terminated based on its use with format
strings:
| mlx4_dbg(dev, "Reporting Driver Version to FW: %s\n", dst);
Moreover, NUL-padding is not required.
Considering the above, a suitable replacement is `strscpy` [2] due to
the fact that it guarantees NUL-termination on the destination buffer
without unnecessarily NUL-padding.
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1]
Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2]
Link: https://github.com/KSPP/linux/issues/90
Signed-off-by: Justin Stitt <justinstitt@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Link: https://lore.kernel.org/r/20231011-strncpy-drivers-net-ethernet-mellanox-mlx4-fw-c-v1-1-4d7b5d34c933@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx4/fw.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c index fe48d20d6118..0005d9e2c2d6 100644 --- a/drivers/net/ethernet/mellanox/mlx4/fw.c +++ b/drivers/net/ethernet/mellanox/mlx4/fw.c @@ -1967,7 +1967,7 @@ int mlx4_INIT_HCA(struct mlx4_dev *dev, struct mlx4_init_hca_param *param) if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DRIVER_VERSION_TO_FW) { u8 *dst = (u8 *)(inbox + INIT_HCA_DRIVER_VERSION_OFFSET / 4); - strncpy(dst, DRV_NAME_FOR_FW, INIT_HCA_DRIVER_VERSION_SZ - 1); + strscpy(dst, DRV_NAME_FOR_FW, INIT_HCA_DRIVER_VERSION_SZ); mlx4_dbg(dev, "Reporting Driver Version to FW: %s\n", dst); } |