From: Kees Cook <keescook@chromium.org>
To: Huacai Chen <chenhuacai@kernel.org>
Cc: Kees Cook <keescook@chromium.org>,
kernel test robot <lkp@intel.com>,
WANG Xuerui <kernel@xen0n.name>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
Nathan Chancellor <nathan@kernel.org>,
Masahiro Yamada <masahiroy@kernel.org>,
Fangrui Song <maskray@google.com>,
loongarch@lists.linux.dev, Thomas Gleixner <tglx@linutronix.de>,
Qing Zhang <zhangqing@loongson.cn>,
Feiyang Chen <chenfeiyang@loongson.cn>,
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 [thread overview]
Message-ID: <20240130233140.work.887-kees@kernel.org> (raw)
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 `vdso_shift_ns':
lib/vdso/gettimeofday.c:23:(.text+0x3f8): undefined reference to `__ubsan_handle_shift_out_of_bounds'
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202401310530.lZHCj1Zl-lkp@intel.com/
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Fangrui Song <maskray@google.com>
Cc: loongarch@lists.linux.dev
Signed-off-by: Kees Cook <keescook@chromium.org>
---
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.
KASAN_SANITIZE := n
+UBSAN_SANITIZE := n
KCOV_INSTRUMENT := n
# Include the generic Makefile to check the built vdso.
--
2.34.1
next reply other threads:[~2024-01-30 23:31 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-30 23:31 Kees Cook [this message]
2024-01-31 6:05 ` [PATCH] LoongArch: vDSO: Disable UBSAN instrumentation Huacai Chen
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