| Message ID | 20200624123330.83226-4-alex.popov@linux.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Improvements of the stackleak gcc plugin | expand |
On Wed, Jun 24, 2020 at 03:33:28PM +0300, Alexander Popov wrote: > Don't use gcc plugins for building arch/arm64/kernel/vdso/vgettimeofday.c > to avoid unneeded instrumentation. > > Signed-off-by: Alexander Popov <alex.popov@linux.com> > --- > arch/arm64/kernel/vdso/Makefile | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile > index 556d424c6f52..0f1ad63b3326 100644 > --- a/arch/arm64/kernel/vdso/Makefile > +++ b/arch/arm64/kernel/vdso/Makefile > @@ -29,7 +29,7 @@ ldflags-y := -shared -nostdlib -soname=linux-vdso.so.1 --hash-style=sysv \ > ccflags-y := -fno-common -fno-builtin -fno-stack-protector -ffixed-x18 > ccflags-y += -DDISABLE_BRANCH_PROFILING > > -CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os $(CC_FLAGS_SCS) > +CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os $(CC_FLAGS_SCS) $(GCC_PLUGINS_CFLAGS) > KBUILD_CFLAGS += $(DISABLE_LTO) > KASAN_SANITIZE := n > UBSAN_SANITIZE := n > -- > 2.25.4 I'll pick this one up as a fix for 5.8, please let me know if that's a problem. Will
On Wed, Jun 24, 2020 at 03:33:28PM +0300, Alexander Popov wrote: > Don't use gcc plugins for building arch/arm64/kernel/vdso/vgettimeofday.c > to avoid unneeded instrumentation. > > Signed-off-by: Alexander Popov <alex.popov@linux.com> It looks like Will has taken this already, but: Acked-by: Kees Cook <keescook@chromium.org>
diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile index 556d424c6f52..0f1ad63b3326 100644 --- a/arch/arm64/kernel/vdso/Makefile +++ b/arch/arm64/kernel/vdso/Makefile @@ -29,7 +29,7 @@ ldflags-y := -shared -nostdlib -soname=linux-vdso.so.1 --hash-style=sysv \ ccflags-y := -fno-common -fno-builtin -fno-stack-protector -ffixed-x18 ccflags-y += -DDISABLE_BRANCH_PROFILING -CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os $(CC_FLAGS_SCS) +CFLAGS_REMOVE_vgettimeofday.o = $(CC_FLAGS_FTRACE) -Os $(CC_FLAGS_SCS) $(GCC_PLUGINS_CFLAGS) KBUILD_CFLAGS += $(DISABLE_LTO) KASAN_SANITIZE := n UBSAN_SANITIZE := n
Don't use gcc plugins for building arch/arm64/kernel/vdso/vgettimeofday.c to avoid unneeded instrumentation. Signed-off-by: Alexander Popov <alex.popov@linux.com> --- arch/arm64/kernel/vdso/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)