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[198.0.35.241]) by smtp.gmail.com with ESMTPSA id y8-20020a17090a644800b0026b30377c14sm199843pjm.6.2023.08.17.13.29.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Aug 2023 13:29:43 -0700 (PDT) From: Kees Cook To: Bjorn Andersson Cc: Kees Cook , Andy Gross , Konrad Dybcio , Michael Turquette , Stephen Boyd , linux-arm-msm@vger.kernel.org, linux-clk@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] clk: qcom: clk-spmi-pmic-div: Annotate struct spmi_pmic_div_clk_cc with __counted_by Date: Thu, 17 Aug 2023 13:29:42 -0700 Message-Id: <20230817202941.never.657-kees@kernel.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1376; i=keescook@chromium.org; h=from:subject:message-id; bh=aFJ/owVNWGHnxeERrmpeKd9Wgvw1VegUqdSJfBbpzIM=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBk3oM2mSVeEUI0BEmGPEnqFczVCa6whyt25AvcE hvrr831zlWJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZN6DNgAKCRCJcvTf3G3A JtdMEACgnhJmvLgodQJ8rW9IPTXTbiAam5FlhCmZbR2WmKf0Ja36KYox6Jz/WJs2YHNAfSmROIH e4UcfCZTrCQliTloC5BC89x/EROnGrOLBw5OqChHDbfwZJbUeLh8SGCBDBRRyZdyxKNG27G6MC+ GEZ0v93DH46Whg696QZ4XiEPGEYK70Lsj/I5h9oIRzzFPbo62uOGQrYyd4eCHMLRNoBTHYlEU9+ mNj65sIv1MJM/KxnpMqSgHrAgY+syi26RjVcUjKRPpnj0FlXQhGBe2NaWG8LIsArmsiXDrybdwL OOAGRls7POzBw+MfiOVsJREga2bGrv7keeGiwK52nFFWWGbruY+DNrIodgfLyCFxp2I7S964TLX OV+J1ga0kkq6c5843mNZi1eR31pKc0uXLoVxyniOUJ233r2FO8/m15ppymlY7Ba39ZOfL78vDKe Z+mAmAJ2tVAJbZeuHYxCYeJ1BVVG2ZrFzkcOTh2E3QBDfxzCT0ZjPpzwNRVrbC4N845wrAzSprp fx92t/OmaHZnjhwA1rC/Vgc7Tb6xYwTHiS0eII0rdUCIbO+G/X6HO7Z27dy2DG3IYJRWUaeB/U8 beOhZk+EZGAQtjCDEohFQGJeIg9IKNWq9JG8AVElaPlylu+/pYtvn7XQRWDOKXrTHK2fi8ZCNe8 5jXqDZ8 JkBvJD5g== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@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 spmi_pmic_div_clk_cc. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Bjorn Andersson Cc: Andy Gross Cc: Konrad Dybcio Cc: Michael Turquette Cc: Stephen Boyd Cc: linux-arm-msm@vger.kernel.org Cc: linux-clk@vger.kernel.org Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva --- drivers/clk/qcom/clk-spmi-pmic-div.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/qcom/clk-spmi-pmic-div.c b/drivers/clk/qcom/clk-spmi-pmic-div.c index f846be285f51..f394031eb0e5 100644 --- a/drivers/clk/qcom/clk-spmi-pmic-div.c +++ b/drivers/clk/qcom/clk-spmi-pmic-div.c @@ -177,7 +177,7 @@ static const struct clk_ops clk_spmi_pmic_div_ops = { struct spmi_pmic_div_clk_cc { int nclks; - struct clkdiv clks[]; + struct clkdiv clks[] __counted_by(nclks); }; static struct clk_hw *