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[198.0.35.241]) by smtp.gmail.com with ESMTPSA id p7-20020a170902e74700b001bf6ea340b3sm3777501plf.116.2023.09.22.10.50.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Sep 2023 10:50:07 -0700 (PDT) From: Kees Cook To: Linus Walleij Cc: Kees Cook , Kunihiko Hayashi , Masami Hiramatsu , linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Nathan Chancellor , Nick Desaulniers , Tom Rix , linux-kernel@vger.kernel.org, llvm@lists.linux.dev, linux-hardening@vger.kernel.org Subject: [PATCH] pinctrl: uniphier: Annotate struct uniphier_pinctrl_reg_region with __counted_by Date: Fri, 22 Sep 2023 10:50:06 -0700 Message-Id: <20230922175006.work.421-kees@kernel.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1374; i=keescook@chromium.org; h=from:subject:message-id; bh=Tm7WSbhCUuk32XvIW7v3CIW2EM0z50wK155ChWrac9c=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBlDdPOjizzHR2Fjm5ECZPVLRxlOXXgda6lwE7va Ga/RNMhW1yJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZQ3TzgAKCRCJcvTf3G3A JhnID/9BsoGqvMvrhL7fUCSef2KOrN+0LY8Y9Gh+WefjyMcP4C22g4sclGpsrxAQkqk8krUt+5w c7zIvVimPqMsIxiBaJWr1OqtIB0pDqA7Jb9lW7lh9N68utQ2cB2YXUYQmvUM4N6MgXplPdH42V8 y1MjcClXYSpmWA19UsRuXCGUG9dxZ4OdFC0yxoUW6D5nN3u4hL+hsWlwH50C4TBF0TEt2WWkNJ3 rBbr/WxM67dRdxxurhQZjdL1O1fFBezTz2PbpZJTg4BL1pRSwu/3zexiLxHjIi9mAugGtkzBWSb ueMncH+Gb06R2+p3vmMrWonH4OPujnK4xFzBcOfrfn4dEUF9UZBjHM7NE/I/KRR2VcYvr7n+LpB YZJDrvy+6inR3Am6Ib+dY8Vwo//eb/uPXD0KXtGAwA0H3098tSkdl3eDQxDR3/g+Ih66IWvwkrP GqJRkE8sF3Nxzk9eBkl3C2myQjSsEuodvl45xOyqOUPpqF5sZNeJfu9dSMTgV7izNogHL8n2OgE JLb5a0Akkl9jAqBRGsKQPxNFYEu1Pi+bMfCc0fiWj7xTMCrMPFQMrlOb+tH9RaYnX4eHZC3gfdj O/tYjcDU6tm2Ak81vIxZ9R+zc/Y45CD0xr09bAu8gjOGQfLMYC5IYhCqGT3fzqOCd4wI4BFWpGn nW5lHw/ 91efgg9g== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-gpio@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 uniphier_pinctrl_reg_region. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Linus Walleij Cc: Kunihiko Hayashi Cc: Masami Hiramatsu Cc: linux-gpio@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva --- drivers/pinctrl/uniphier/pinctrl-uniphier-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c b/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c index 18d3a4f69e63..fbd0fcdb42c8 100644 --- a/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c +++ b/drivers/pinctrl/uniphier/pinctrl-uniphier-core.c @@ -31,7 +31,7 @@ struct uniphier_pinctrl_reg_region { struct list_head node; unsigned int base; unsigned int nregs; - u32 vals[]; + u32 vals[] __counted_by(nregs); }; struct uniphier_pinctrl_priv {