ld's --build-id defaults to "sha1" style, while lld defaults to "fast". The build IDs are very different between the two, which may confuse programs that reference them.

Signed-off-by: Bill Wendling morbo@google.com --- Makefile | 4 ++-- arch/arm/vdso/Makefile | 2 +- arch/arm64/kernel/vdso/Makefile | 2 +- arch/arm64/kernel/vdso32/Makefile | 2 +- arch/mips/vdso/Makefile | 2 +- arch/riscv/kernel/vdso/Makefile | 2 +- arch/s390/kernel/vdso64/Makefile | 2 +- arch/sparc/vdso/Makefile | 2 +- arch/x86/entry/vdso/Makefile | 2 +- tools/testing/selftests/bpf/Makefile | 2 +- 10 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/Makefile b/Makefile index 2b66d3398878..7e6f41c9803a 100644 --- a/Makefile +++ b/Makefile @@ -973,8 +973,8 @@ KBUILD_CPPFLAGS += $(KCPPFLAGS) KBUILD_AFLAGS += $(KAFLAGS) KBUILD_CFLAGS += $(KCFLAGS)

-KBUILD_LDFLAGS_MODULE += --build-id -LDFLAGS_vmlinux += --build-id +KBUILD_LDFLAGS_MODULE += --build-id=sha1 +LDFLAGS_vmlinux += --build-id=sha1

ifeq ($(CONFIG_STRIP_ASM_SYMS),y) LDFLAGS_vmlinux += $(call ld-option, -X,) diff --git a/arch/arm/vdso/Makefile b/arch/arm/vdso/Makefile index a54f70731d9f..150ce6e6a5d3 100644 --- a/arch/arm/vdso/Makefile +++ b/arch/arm/vdso/Makefile @@ -19,7 +19,7 @@ ccflags-y += -DDISABLE_BRANCH_PROFILING -DBUILD_VDSO32 ldflags-$(CONFIG_CPU_ENDIAN_BE8) := --be8 ldflags-y := -Bsymbolic --no-undefined -soname=linux-vdso.so.1 \ -z max-page-size=4096 -nostdlib -shared $(ldflags-y) \ - --hash-style=sysv --build-id \ + --hash-style=sysv --build-id=sha1 \ -T

obj-$(CONFIG_VDSO) += vdso.o diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile index 45d5cfe46429..871915097f9d 100644 --- a/arch/arm64/kernel/vdso/Makefile +++ b/arch/arm64/kernel/vdso/Makefile @@ -24,7 +24,7 @@ btildflags-$(CONFIG_ARM64_BTI_KERNEL) += -z force-bti # routines, as x86 does (see 6f121e548f83 ("x86, vdso: Reimplement vdso.so # preparation in build-time C")). ldflags-y := -shared -nostdlib -soname=linux-vdso.so.1 --hash-style=sysv \ - -Bsymbolic $(call ld-option, --no-eh-frame-hdr) --build-id -n \ + -Bsymbolic $(call ld-option, --no-eh-frame-hdr) --build-id=sha1 -n \ $(btildflags-y) -T

ccflags-y := -fno-common -fno-builtin -fno-stack-protector -ffixed-x18 diff --git a/arch/arm64/kernel/vdso32/Makefile b/arch/arm64/kernel/vdso32/Makefile index d6adb4677c25..4fa4b3fe8efb 100644 --- a/arch/arm64/kernel/vdso32/Makefile +++ b/arch/arm64/kernel/vdso32/Makefile @@ -128,7 +128,7 @@ VDSO_LDFLAGS += -Wl,-Bsymbolic -Wl,--no-undefined -Wl,-soname=linux-vdso.so.1 VDSO_LDFLAGS += -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096 VDSO_LDFLAGS += -nostdlib -shared -mfloat-abi=soft VDSO_LDFLAGS += -Wl,--hash-style=sysv -VDSO_LDFLAGS += -Wl,--build-id +VDSO_LDFLAGS += -Wl,--build-id=sha1 VDSO_LDFLAGS += $(call cc32-ldoption,-fuse-ld=bfd)

diff --git a/arch/mips/vdso/Makefile b/arch/mips/vdso/Makefile index 57fe83235281..5810cc12bc1d 100644 --- a/arch/mips/vdso/Makefile +++ b/arch/mips/vdso/Makefile @@ -61,7 +61,7 @@ endif # VDSO linker flags. ldflags-y := -Bsymbolic --no-undefined -soname=linux-vdso.so.1 \ $(filter -E%,$(KBUILD_CFLAGS)) -nostdlib -shared \ - -G 0 --eh-frame-hdr --hash-style=sysv --build-id -T + -G 0 --eh-frame-hdr --hash-style=sysv --build-id=sha1 -T

CFLAGS_REMOVE_vdso.o = -pg

diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile index 478e7338ddc1..7d6a94d45ec9 100644 --- a/arch/riscv/kernel/vdso/Makefile +++ b/arch/riscv/kernel/vdso/Makefile @@ -49,7 +49,7 @@ $(obj)/vdso.so.dbg: $(src)/vdso.lds $(obj-vdso) FORCE # refer to these symbols in the kernel code rather than hand-coded addresses.

SYSCFLAGS_vdso.so.dbg = -shared -s -Wl,-soname=linux-vdso.so.1 \ - -Wl,--build-id -Wl,--hash-style=both + -Wl,--build-id=sha1 -Wl,--hash-style=both $(obj)/vdso-dummy.o: $(src)/vdso.lds $(obj)/rt_sigreturn.o FORCE $(call if_changed,vdsold)

diff --git a/arch/s390/kernel/vdso64/Makefile b/arch/s390/kernel/vdso64/Makefile index 4a66a1cb919b..edc473b32e42 100644 --- a/arch/s390/kernel/vdso64/Makefile +++ b/arch/s390/kernel/vdso64/Makefile @@ -19,7 +19,7 @@ KBUILD_AFLAGS_64 += -m64 -s KBUILD_CFLAGS_64 := $(filter-out -m64,$(KBUILD_CFLAGS)) KBUILD_CFLAGS_64 += -m64 -fPIC -shared -fno-common -fno-builtin ldflags-y := -fPIC -shared -nostdlib -soname=linux-vdso64.so.1 \ - --hash-style=both --build-id -T + --hash-style=both --build-id=sha1 -T

$(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_64) $(targets:%=$(obj)/%.dbg): KBUILD_AFLAGS = $(KBUILD_AFLAGS_64) diff --git a/arch/sparc/vdso/Makefile b/arch/sparc/vdso/Makefile index f44355e46f31..469dd23887ab 100644 --- a/arch/sparc/vdso/Makefile +++ b/arch/sparc/vdso/Makefile @@ -115,7 +115,7 @@ quiet_cmd_vdso = VDSO $@ -T $(filter %.lds,$^) $(filter %.o,$^) && \ sh $(srctree)/$(src)/checkundef.sh '$(OBJDUMP)' '$@'

-VDSO_LDFLAGS = -shared --hash-style=both --build-id -Bsymbolic +VDSO_LDFLAGS = -shared --hash-style=both --build-id=sha1 -Bsymbolic GCOV_PROFILE := n

# diff --git a/arch/x86/entry/vdso/Makefile b/arch/x86/entry/vdso/Makefile index 215376d975a2..ebba25ed9a38 100644 --- a/arch/x86/entry/vdso/Makefile +++ b/arch/x86/entry/vdso/Makefile @@ -176,7 +176,7 @@ quiet_cmd_vdso = VDSO $@ -T $(filter %.lds,$^) $(filter %.o,$^) && \ sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@'

-VDSO_LDFLAGS = -shared --hash-style=both --build-id \ +VDSO_LDFLAGS = -shared --hash-style=both --build-id=sha1 \ $(call ld-option, --eh-frame-hdr) -Bsymbolic GCOV_PROFILE := n

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index fc946b7ac288..daf186f88a63 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -133,7 +133,7 @@ $(OUTPUT)/%:%.c

$(OUTPUT)/urandom_read: urandom_read.c $(call msg,BINARY,,$@) - $(Q)$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS) -Wl,--build-id + $(Q)$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS) -Wl,--build-id=sha1

$(OUTPUT)/test_stub.o: test_stub.c $(BPFOBJ) $(call msg,CC,,$@)