commit ac3e233d29f7f77f28243af0132057d378d3ea58 upstream.
GNU linker's -z common-page-size's default value is based on the target architecture. arch/x86/entry/vdso/Makefile sets it to the architecture default, which is implicit and redundant. Drop it.
Fixes: 2aae950b21e4 ("x86_64: Add vDSO for x86-64 with gettimeofday/clock_gettime/getcpu") Reported-by: Dmitry Golovin dima@golovin.in Reported-by: Bill Wendling morbo@google.com Suggested-by: Dmitry Golovin dima@golovin.in Suggested-by: Rui Ueyama ruiu@google.com Signed-off-by: Nick Desaulniers ndesaulniers@google.com Signed-off-by: Borislav Petkov bp@suse.de Acked-by: Andy Lutomirski luto@kernel.org Cc: Andi Kleen andi@firstfloor.org Cc: Fangrui Song maskray@google.com Cc: "H. Peter Anvin" hpa@zytor.com Cc: Ingo Molnar mingo@redhat.com Cc: Thomas Gleixner tglx@linutronix.de Cc: x86-ml x86@kernel.org Link: https://lkml.kernel.org/r/20181206191231.192355-1-ndesaulniers@google.com Link: https://bugs.llvm.org/show_bug.cgi?id=38774 Link: https://github.com/ClangBuiltLinux/linux/issues/31 Signed-off-by: Nathan Chancellor natechancellor@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/x86/entry/vdso/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/entry/vdso/Makefile b/arch/x86/entry/vdso/Makefile index 2ae92c6b1de6d..756dc9432d152 100644 --- a/arch/x86/entry/vdso/Makefile +++ b/arch/x86/entry/vdso/Makefile @@ -48,7 +48,7 @@ targets += $(vdso_img_sodbg) export CPPFLAGS_vdso.lds += -P -C
VDSO_LDFLAGS_vdso.lds = -m elf_x86_64 -soname linux-vdso.so.1 --no-undefined \ - -z max-page-size=4096 -z common-page-size=4096 + -z max-page-size=4096
$(obj)/vdso64.so.dbg: $(src)/vdso.lds $(vobjs) FORCE $(call if_changed,vdso) @@ -95,7 +95,7 @@ CFLAGS_REMOVE_vvar.o = -pg
CPPFLAGS_vdsox32.lds = $(CPPFLAGS_vdso.lds) VDSO_LDFLAGS_vdsox32.lds = -m elf32_x86_64 -soname linux-vdso.so.1 \ - -z max-page-size=4096 -z common-page-size=4096 + -z max-page-size=4096
# 64-bit objects to re-brand as x32 vobjs64-for-x32 := $(filter-out $(vobjs-nox32),$(vobjs-y))