On Tue, 22 Oct 2019 at 14:59, Mark Rutland <mark.rutland@xxxxxxx> wrote: > > On Thu, Oct 17, 2019 at 04:13:05PM +0200, Marco Elver wrote: > > This patch enables KCSAN for x86, with updates to build rules to not use > > KCSAN for several incompatible compilation units. > > > > Signed-off-by: Marco Elver <elver@xxxxxxxxxx> > > --- > > v2: > > * Document build exceptions where no previous above comment explained > > why we cannot instrument. > > --- > > arch/x86/Kconfig | 1 + > > arch/x86/boot/Makefile | 2 ++ > > arch/x86/boot/compressed/Makefile | 2 ++ > > arch/x86/entry/vdso/Makefile | 3 +++ > > arch/x86/include/asm/bitops.h | 6 +++++- > > arch/x86/kernel/Makefile | 7 +++++++ > > arch/x86/kernel/cpu/Makefile | 3 +++ > > arch/x86/lib/Makefile | 4 ++++ > > arch/x86/mm/Makefile | 3 +++ > > arch/x86/purgatory/Makefile | 2 ++ > > arch/x86/realmode/Makefile | 3 +++ > > arch/x86/realmode/rm/Makefile | 3 +++ > > drivers/firmware/efi/libstub/Makefile | 2 ++ > > 13 files changed, 40 insertions(+), 1 deletion(-) > > > diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile > > index 0460c7581220..693d0a94b118 100644 > > --- a/drivers/firmware/efi/libstub/Makefile > > +++ b/drivers/firmware/efi/libstub/Makefile > > @@ -31,7 +31,9 @@ KBUILD_CFLAGS := $(cflags-y) -DDISABLE_BRANCH_PROFILING \ > > -D__DISABLE_EXPORTS > > > > GCOV_PROFILE := n > > +# Sanitizer runtimes are unavailable and cannot be linked here. > > KASAN_SANITIZE := n > > +KCSAN_SANITIZE := n > > UBSAN_SANITIZE := n > > OBJECT_FILES_NON_STANDARD := y > > Not a big deal, but it might make sense to move the EFI stub exception > to patch 3 since it isn't x86 specific (and will also apply for arm64). Thanks for spotting, moved for v3. -- Marco > Otherwise this looks good to me. > > Thanks, > Mark.
