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| author | Kees Cook <keescook@chromium.org> | 2023-10-03 16:18:18 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-10-05 18:31:34 -0700 |
| commit | 3e584e32b19d4c8d4591dc720277e2001d135ee1 (patch) | |
| tree | 957eda81f6204bb57d8872dd7c3369ef1a217a30 | |
| parent | 2253bb3ff242af3b1a53cb98e2e4eb1eec82dd2a (diff) | |
| download | nf-next-3e584e32b19d4c8d4591dc720277e2001d135ee1.tar.gz | |
nexthop: Annotate struct nh_notifier_res_table_info 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_notifier_res_table_info.
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Tom Rix <trix@redhat.com>
Cc: llvm@lists.linux.dev
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: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20231003231818.work.883-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 0b1172dbb334e3..dbd90e8fe9d6a1 100644 --- a/include/net/nexthop.h +++ b/include/net/nexthop.h @@ -200,7 +200,7 @@ struct nh_notifier_res_bucket_info { struct nh_notifier_res_table_info { u16 num_nh_buckets; - struct nh_notifier_single_info nhs[]; + struct nh_notifier_single_info nhs[] __counted_by(num_nh_buckets); }; struct nh_notifier_info { |