diff options
| author | Kees Cook <keescook@chromium.org> | 2023-09-29 11:07:44 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-10-02 11:27:13 -0700 |
| commit | 18cee9da32cdabd1cd9344e1369cd8adcc14d022 (patch) | |
| tree | e8e2d645de8bab4ed81c0c6d7c0e125823c9b4b4 | |
| parent | 4d3a42ec5cff817502ef19ae04427caab6fd5481 (diff) | |
mlxsw: spectrum_span: Annotate struct mlxsw_sp_span 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_sp_span.
[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/20230929180746.3005922-5-keescook@chromium.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c index b3472fb94617..af50ff9e5f26 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_span.c @@ -31,7 +31,7 @@ struct mlxsw_sp_span { refcount_t policer_id_base_ref_count; atomic_t active_entries_count; int entries_count; - struct mlxsw_sp_span_entry entries[]; + struct mlxsw_sp_span_entry entries[] __counted_by(entries_count); }; struct mlxsw_sp_span_analyzed_port { |