diff options
| author | Kees Cook <keescook@chromium.org> | 2023-10-03 16:18:13 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-10-05 18:31:18 -0700 |
| commit | 2253bb3ff242af3b1a53cb98e2e4eb1eec82dd2a (patch) | |
| tree | af9e59186abbda56f907d9dca1ddb3056e469d5b | |
| parent | b374d522985ca1a1edb0f165b64974e045e8c490 (diff) | |
nexthop: Annotate struct nh_res_table 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 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 nh_res_table.
Link: https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci [1]
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20231003231813.work.042-kees@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | include/net/nexthop.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/nexthop.h b/include/net/nexthop.h index 2b12725de9c0..0b1172dbb334 100644 --- a/include/net/nexthop.h +++ b/include/net/nexthop.h @@ -92,7 +92,7 @@ struct nh_res_table { u32 unbalanced_timer; u16 num_nh_buckets; - struct nh_res_bucket nh_buckets[]; + struct nh_res_bucket nh_buckets[] __counted_by(num_nh_buckets); }; struct nh_grp_entry { |