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Tue, 30 Jan 2024 15:31:42 -0800 (PST) Received: from www.outflux.net ([198.0.35.241]) by smtp.gmail.com with ESMTPSA id e17-20020a656491000000b005d67862799asm4122554pgv.44.2024.01.30.15.31.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Jan 2024 15:31:42 -0800 (PST) From: Kees Cook To: Huacai Chen Cc: Kees Cook , kernel test robot , WANG Xuerui , Vincenzo Frascino , Nathan Chancellor , Masahiro Yamada , Fangrui Song , loongarch@lists.linux.dev, Thomas Gleixner , Qing Zhang , Feiyang Chen , linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Subject: [PATCH] LoongArch: vDSO: Disable UBSAN instrumentation Date: Tue, 30 Jan 2024 15:31:40 -0800 Message-Id: <20240130233140.work.887-kees@kernel.org> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1243; i=keescook@chromium.org; h=from:subject:message-id; bh=tjgkJWJHJ1m0/YqTb/xcrpYoub6gZSwUTnxfXo0y8mM=; 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charset="utf-8" The vDSO executes in userspace, so the kernel's UBSAN should not instrument it. Solves these kind of build errors: loongarch64-linux-ld: arch/loongarch/vdso/vgettimeofday.o: in function `v= dso_shift_ns': lib/vdso/gettimeofday.c:23:(.text+0x3f8): undefined reference to `__ubsan= _handle_shift_out_of_bounds' Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202401310530.lZHCj1Zl-lkp@int= el.com/ Cc: Huacai Chen Cc: WANG Xuerui Cc: Vincenzo Frascino Cc: Nathan Chancellor Cc: Masahiro Yamada Cc: Fangrui Song Cc: loongarch@lists.linux.dev Signed-off-by: Kees Cook --- arch/loongarch/vdso/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/loongarch/vdso/Makefile b/arch/loongarch/vdso/Makefile index c74c9921304f..f597cd08a96b 100644 --- a/arch/loongarch/vdso/Makefile +++ b/arch/loongarch/vdso/Makefile @@ -2,6 +2,7 @@ # Objects to go into the VDSO. =20 KASAN_SANITIZE :=3D n +UBSAN_SANITIZE :=3D n KCOV_INSTRUMENT :=3D n =20 # Include the generic Makefile to check the built vdso. --=20 2.34.1