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| author | Kees Cook <keescook@chromium.org> | 2023-09-29 11:07:41 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-10-02 11:27:12 -0700 |
| commit | c63da7d628933a228efebd0b0886749bbb83f883 (patch) | |
| tree | a2efc9599ba6fc8193be9ce464729befa466925c | |
| parent | 0b7ed8183375751ec018dd912643a85191cc2e27 (diff) | |
| download | linux-c63da7d628933a228efebd0b0886749bbb83f883.tar.gz linux-c63da7d628933a228efebd0b0886749bbb83f883.tar.bz2 linux-c63da7d628933a228efebd0b0886749bbb83f883.zip | |
mlxsw: core: Annotate struct mlxsw_env with __counted_by
Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
As found with Coccinelle[1], add __counted_by for struct mlxsw_env.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Petr Machata <petrm@nvidia.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://lore.kernel.org/r/20230929180746.3005922-2-keescook@chromium.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core_env.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core_env.c b/drivers/net/ethernet/mellanox/mlxsw/core_env.c index 7286f0deb5f9..53b150b7ae4e 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core_env.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core_env.c @@ -34,7 +34,7 @@ struct mlxsw_env { u8 num_of_slots; /* Including the main board. */ u8 max_eeprom_len; /* Maximum module EEPROM transaction length. */ struct mutex line_cards_lock; /* Protects line cards. */ - struct mlxsw_env_line_card *line_cards[]; + struct mlxsw_env_line_card *line_cards[] __counted_by(num_of_slots); }; static bool __mlxsw_env_linecard_is_active(struct mlxsw_env *mlxsw_env, |