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Message-ID: <20240329123522.3086878-6-sashal@kernel.org> Date: Fri, 29 Mar 2024 08:35:12 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Kees Cook <keescook@...omium.org>, Sam Ravnborg <sam@...nborg.org>, Sasha Levin <sashal@...nel.org>, davem@...emloft.net, andreas@...sler.com, masahiroy@...nel.org, rmk+kernel@...linux.org.uk, deller@....de, catalin.marinas@....com, sparclinux@...r.kernel.org Subject: [PATCH AUTOSEL 4.19 06/11] sparc: vdso: Disable UBSAN instrumentation From: Kees Cook <keescook@...omium.org> [ Upstream commit d4be85d068b4418c341f79b654399f7f0891069a ] The UBSAN instrumentation cannot work in the vDSO since it is executing in userspace, so disable it in the Makefile. Fixes the build failures such as: arch/sparc/vdso/vclock_gettime.c:217: undefined reference to `__ubsan_handle_shift_out_of_bounds' Acked-by: Sam Ravnborg <sam@...nborg.org> Link: https://lore.kernel.org/all/20240224073617.GA2959352@ravnborg.org Signed-off-by: Kees Cook <keescook@...omium.org> Signed-off-by: Sasha Levin <sashal@...nel.org> --- arch/sparc/vdso/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/sparc/vdso/Makefile b/arch/sparc/vdso/Makefile index dc85570d88395..4fa1cb1a67fca 100644 --- a/arch/sparc/vdso/Makefile +++ b/arch/sparc/vdso/Makefile @@ -1,6 +1,7 @@ # # Building vDSO images for sparc. # +UBSAN_SANITIZE := n KBUILD_CFLAGS += $(DISABLE_LTO) -- 2.43.0
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