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 adf_fw_counters. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Giovanni Cabiddu <giovanni.cabi...@intel.com> Cc: Herbert Xu <herb...@gondor.apana.org.au> Cc: "David S. Miller" <da...@davemloft.net> Cc: Nathan Chancellor <nat...@kernel.org> Cc: Nick Desaulniers <ndesaulni...@google.com> Cc: Tom Rix <t...@redhat.com> Cc: Adam Guerin <adam.gue...@intel.com> Cc: Lucas Segarra Fernandez <lucas.segarra.fernan...@intel.com> Cc: Andy Shevchenko <andriy.shevche...@linux.intel.com> Cc: qat-li...@intel.com Cc: linux-crypto@vger.kernel.org Cc: l...@lists.linux.dev Signed-off-by: Kees Cook <keesc...@chromium.org> --- drivers/crypto/intel/qat/qat_common/adf_fw_counters.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/intel/qat/qat_common/adf_fw_counters.c b/drivers/crypto/intel/qat/qat_common/adf_fw_counters.c index cb6e09ef5c9f..6abe4736eab8 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_fw_counters.c +++ b/drivers/crypto/intel/qat/qat_common/adf_fw_counters.c @@ -34,7 +34,7 @@ struct adf_ae_counters { struct adf_fw_counters { u16 ae_count; - struct adf_ae_counters ae_counters[]; + struct adf_ae_counters ae_counters[] __counted_by(ae_count); }; static void adf_fw_counters_parse_ae_values(struct adf_ae_counters *ae_counters, u32 ae, -- 2.34.1
