From: Kees Cook Date: Thu, 17 Aug 2023 20:41:47 +0000 (-0700) Subject: interconnect: Annotate struct icc_path with __counted_by X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6f0c60f1461181c4edcd916a9647145e9d5cff98;p=linux.git interconnect: Annotate struct icc_path 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 icc_path. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Georgi Djakov Cc: linux-pm@vger.kernel.org Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Link: https://lore.kernel.org/r/20230817204144.never.605-kees@kernel.org Signed-off-by: Georgi Djakov --- diff --git a/drivers/interconnect/internal.h b/drivers/interconnect/internal.h index f5f82a5c939e2..b30856db523d4 100644 --- a/drivers/interconnect/internal.h +++ b/drivers/interconnect/internal.h @@ -38,7 +38,7 @@ struct icc_req { struct icc_path { const char *name; size_t num_nodes; - struct icc_req reqs[]; + struct icc_req reqs[] __counted_by(num_nodes); }; #endif