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[198.0.35.241]) by smtp.gmail.com with ESMTPSA id ne10-20020a17090b374a00b00277246e857esm8872pjb.23.2023.09.22.10.52.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 22 Sep 2023 10:52:08 -0700 (PDT) From: Kees Cook To: Support Opensource Cc: Kees Cook , Liam Girdwood , Mark Brown , Nathan Chancellor , Nick Desaulniers , Tom Rix , linux-kernel@vger.kernel.org, llvm@lists.linux.dev, linux-hardening@vger.kernel.org Subject: [PATCH] regulator: da9063: Annotate struct da9063_regulators with __counted_by Date: Fri, 22 Sep 2023 10:52:07 -0700 Message-Id: <20230922175207.work.576-kees@kernel.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1320; i=keescook@chromium.org; h=from:subject:message-id; bh=ZdGIk5VtLtTn1AcHf5ktUG4eqSdrMBwaMfBOFKHGDSk=; b=owEBbQKS/ZANAwAKAYly9N/cbcAmAcsmYgBlDdRHsC8woGcucLGBBK/2VeJ7ydLTnSW6b+X8+ p9ed/qBYhOJAjMEAAEKAB0WIQSlw/aPIp3WD3I+bhOJcvTf3G3AJgUCZQ3URwAKCRCJcvTf3G3A Jn0UEACoNbrcfq2k9xjIrqekuseq4tGHpvnrzKgvzV7tiw61SxQF7JunIspuLs34jo63kYlHjez 1maQE9Str8/eS26qLtM9+nfNH6FOgg7Qj150jrfYP87hwcjl43SORasxhYVZXPuS+KOcuUzgfEk BVt3U8+FkMOUUFCVi45OGumu/OwdfCwbbgb3CsAgqqjvWSMSpOu7tYzU3EhgRqbShtFEDI6mm/v hWvfASughriswZRRdh0lC9e577cdfeF5JKFdG3L+gXUeZSPiM81UCPkeGUrzkmlOUOpyb8+hLsr JP0ed3mZMjQgKXbKIwfyakVvTx0q4vTdF7B5v2p4I1j9LDriQm6Lp3v9XQ9+coKktG/ddH2KZ8J YAo5je8kcvHcsk7WZYj9u+WgoIoZJAXMKE/gsjuiYFJuSRfcxOnKIbgCnCrlQPw2SzI9/j1Vvg0 4eKpA4lwuCNH+bJSIEvBI5+jvJT6FlaAgKqPGyQzEcln1to1DFWoCfm2I1AjGMmNdyOrLha2OGQ kcov3mwlkJR8+q6XW3dwBE0JuRcEAvWpzBV8IH3m179Z3qQO3tpypI5E4KseKxmjYPHBRWKJOTK 40hQpD9foa4kSVvbWRIJCX7+4fQBODbBI5GX0WvmZEQxrmfxA12ST36l0nUPbBi5n56UrE8tiiP 7ewlZXF sf7w5Cfg== X-Developer-Key: i=keescook@chromium.org; a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on groat.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (groat.vger.email [0.0.0.0]); Fri, 22 Sep 2023 10:54:25 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1777765978068049362 X-GMAIL-MSGID: 1777765978068049362 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 da9063_regulators. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Support Opensource Cc: Liam Girdwood Cc: Mark Brown Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva --- drivers/regulator/da9063-regulator.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/da9063-regulator.c b/drivers/regulator/da9063-regulator.c index a0621665a6d2..82bf321ae06f 100644 --- a/drivers/regulator/da9063-regulator.c +++ b/drivers/regulator/da9063-regulator.c @@ -158,7 +158,7 @@ struct da9063_regulator { struct da9063_regulators { unsigned int n_regulators; /* Array size to be defined during init. Keep at end. */ - struct da9063_regulator regulator[]; + struct da9063_regulator regulator[] __counted_by(n_regulators); }; /* BUCK modes for DA9063 */