On 2/11/22 1:30 AM, Sherry Yang wrote: > seccomp_bpf failed on tests 47 global.user_notification_filter_empty > and 48 global.user_notification_filter_empty_threaded when it's > tested on updated kernel but with old kernel headers. Because old > kernel headers don't have definition of macro __NR_clone3 which is > required for these two tests. Since under selftests/, we can install > headers once for all tests (the default INSTALL_HDR_PATH is > usr/include), fix it by adding usr/include to the list of directories > to be searched. Use "-isystem" to indicate it's a system directory as > the real kernel headers directories are. > > Signed-off-by: Sherry Yang <sherry.yang@xxxxxxxxxx> > Tested-by: Sherry Yang <sherry.yang@xxxxxxxxxx> > --- > tools/testing/selftests/seccomp/Makefile | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tools/testing/selftests/seccomp/Makefile b/tools/testing/selftests/seccomp/Makefile > index 0ebfe8b0e147..585f7a0c10cb 100644 > --- a/tools/testing/selftests/seccomp/Makefile > +++ b/tools/testing/selftests/seccomp/Makefile > @@ -1,5 +1,5 @@ > # SPDX-License-Identifier: GPL-2.0 > -CFLAGS += -Wl,-no-as-needed -Wall > +CFLAGS += -Wl,-no-as-needed -Wall -isystem ../../../../usr/include/"../../../../usr/include/" directory doesn't have header files if different output directory is used for kselftests build like "make -C tools/tests/selftest O=build". Can you try adding recently added variable, KHDR_INCLUDES here which makes this kind of headers inclusion easy and correct for other build combinations as well?