diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 662825f55f99..3969baa70b5f 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -41,7 +41,7 @@ srctree := $(patsubst %/,%,$(dir $(srctree)))
 endif
 
 CFLAGS += -g $(OPT_FLAGS) -rdynamic					\
-	  -Wall -Werror -fno-omit-frame-pointer				\
+	  -fno-omit-frame-pointer				\
 	  $(GENFLAGS) $(SAN_CFLAGS) $(LIBELF_CFLAGS)			\
 	  -I$(CURDIR) -I$(INCLUDE_DIR) -I$(GENDIR) -I$(LIBDIR)		\
 	  -I$(TOOLSINCDIR) -I$(APIDIR) -I$(OUTPUT)
diff --git a/tools/testing/selftests/bpf/prog_tests/mptcp.c b/tools/testing/selftests/bpf/prog_tests/mptcp.c
index d8ae0d8ec61e..bd9253911199 100644
--- a/tools/testing/selftests/bpf/prog_tests/mptcp.c
+++ b/tools/testing/selftests/bpf/prog_tests/mptcp.c
@@ -600,9 +600,13 @@ static int userspace_pm_init(enum mptcp_pm_type pm_type)
 
 static void userspace_pm_cleanup(void)
 {
+	//SYS(fail, "ip netns exec %s cat %s", NS_TEST, PM_EVENTS);
+
 	SYS_NOFAIL("ip netns exec %s killall %s > /dev/null 2>&1",
 		   NS_TEST, PM_CTL);
 	SYS_NOFAIL("ip netns exec %s rm -rf %s", NS_TEST, PM_EVENTS);
+//fail:
+	;
 }
 
 static char *get_events_str(char *type)