From: Kees Cook Date: Thu, 17 Aug 2023 20:29:15 +0000 (-0700) Subject: interconnect: icc-clk: Annotate struct icc_clk_provider with __counted_by X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b1e0cdb0f6974380501d7ab70e025534f84d415e;p=linux.git interconnect: icc-clk: Annotate struct icc_clk_provider 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_clk_provider. [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/20230817202914.never.661-kees@kernel.org Signed-off-by: Georgi Djakov --- diff --git a/drivers/interconnect/icc-clk.c b/drivers/interconnect/icc-clk.c index 4d43ebff42577..d787f2ea36d97 100644 --- a/drivers/interconnect/icc-clk.c +++ b/drivers/interconnect/icc-clk.c @@ -16,7 +16,7 @@ struct icc_clk_node { struct icc_clk_provider { struct icc_provider provider; int num_clocks; - struct icc_clk_node clocks[]; + struct icc_clk_node clocks[] __counted_by(num_clocks); }; #define to_icc_clk_provider(_provider) \