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Sat, 25 Oct 2025 09:33:38 -0700 (PDT) Received: from localhost ([12.22.141.131]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-87fc48a8a1bsm16461146d6.8.2025.10.25.09.33.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 25 Oct 2025 09:33:37 -0700 (PDT) From: "Yury Norov (NVIDIA)" To: Linus Walleij , Lee Jones , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Kees Cook , linux-hardening@vger.kernel.org Cc: "Yury Norov (NVIDIA)" Subject: [PATCH 20/21] fortify-string: don't use GENMASK() Date: Sat, 25 Oct 2025 12:33:02 -0400 Message-ID: <20251025163305.306787-13-yury.norov@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251025162858.305236-1-yury.norov@gmail.com> References: <20251025162858.305236-1-yury.norov@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251025_093339_839562_09DAE60D X-CRM114-Status: GOOD ( 10.91 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org GENMASK(high, low) notation is confusing. BITS(low, high) is more appropriate. Signed-off-by: Yury Norov (NVIDIA) --- include/linux/fortify-string.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/fortify-string.h b/include/linux/fortify-string.h index b3b53f8c1b28..0c95cdcca736 100644 --- a/include/linux/fortify-string.h +++ b/include/linux/fortify-string.h @@ -11,9 +11,9 @@ #define __RENAME(x) __asm__(#x) #define FORTIFY_REASON_DIR(r) FIELD_GET(BIT(0), r) -#define FORTIFY_REASON_FUNC(r) FIELD_GET(GENMASK(7, 1), r) +#define FORTIFY_REASON_FUNC(r) FIELD_GET(BITS(1, 7), r) #define FORTIFY_REASON(func, write) (FIELD_PREP(BIT(0), write) | \ - FIELD_PREP(GENMASK(7, 1), func)) + FIELD_PREP(BITS(1, 7), func)) /* Overridden by KUnit tests. */ #ifndef fortify_panic -- 2.43.0