From: Kees Cook <keescook@xxxxxxxxxxxx> [ 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@xxxxxxxxxxxx> Link: https://lore.kernel.org/all/20240224073617.GA2959352@xxxxxxxxxxxx Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- 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
