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). Otherwise this looks good to me. Thanks, Mark.
