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[198.0.35.241]) by smtp.gmail.com with ESMTPSA id f8-20020a633808000000b0055c02b8688asm104792pga.20.2023.08.17.13.29.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Aug 2023 13:29:16 -0700 (PDT) From: Kees Cook To: Georgi Djakov Cc: Kees Cook , linux-pm@vger.kernel.org, Nathan Chancellor , Nick Desaulniers , Tom Rix , linux-kernel@vger.kernel.org, llvm@lists.linux.dev, linux-hardening@vger.kernel.org Subject: [PATCH] interconnect: icc-clk: Annotate struct icc_clk_provider with __counted_by Date: Thu, 17 Aug 2023 13:29:15 -0700 Message-Id: <20230817202914.never.661-kees@kernel.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1168; i=keescook@chromium.org; h=from:subject:message-id; bh=V/JCGKhhIUvYMZwINl/W0cWShIAE6EyAXc3VChYyI48=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBk3oMbZWS6f4Gn2UrbPx823jib67w4/eDfzQkNc 8O/6ildBgOJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZN6DGwAKCRCJcvTf3G3A Jmt3EACiQyI5QLyRqha/vGjQqFJOXqtFjcN9mt/F/ayeNCxUvPbrt8FYFRLgRht8uX0saNCudAk ke+mW9O8NefD1xoVSvt1W08jN/v+63aZ0yIQUnp/CLb3BV6SO33EWj22w77Hx7i7GgxyDIiVLnH f9KLTAfoQnloXyk5vfFecdmKewwa2wAXVirnkGqVvw5GexvknXAdVAdgw+znrGu+Sc481EbV+hF 2OoqpBQ33YctAqJUVTeg4HfoJLyEWBHH918kk1Q12U2oYUcf5aFd0wmJZsLjUefjBV5SvAZFZiZ Cw2/ymHRWHOmJ0YMxp91JuL2x16H+ozABgmMlG88q72KfSg9UH0VSYn1mSPNQ2YhShAnA25/Sxc M61r3jF+BiE9QChOPFriiV050W8RsVNMpX3RBqR19jThspygD4bd3xUqXfxJ8mOHl4AP5ykeURf Fxa/RuWNGUXfy/6hD/v41uXp9+1IKom3zooPuGdoDeEhJ54CvvHrnyWH1pke6NndkibWPDK97MY zo/0iDbdKXMFSdebJDWjWiCwe2Eabu8dkEb0ASCTA+bZaQzGB7jCt9de4wq8tCHEU1xRyxf4Ga/ /L9fMyRP9Karpe1y0LXyjLHU728TNd7iLQYn7g2EeFNwNz9Y5pzQW8taQ1Re1R0Vj33476iGUwh 2d9k7+i FKtaJuTQ== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org 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 --- drivers/interconnect/icc-clk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/interconnect/icc-clk.c b/drivers/interconnect/icc-clk.c index 4d43ebff4257..d787f2ea36d9 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) \