1 files changed, 4 insertions, 4 deletions
diff --git a/tools/testing/selftests/mm/uffd-unit-tests.c b/tools/testing/selftests/mm/uffd-unit-tests.c
index f917b4c4c943..f4807242c5b2 100644
--- a/tools/testing/selftests/mm/uffd-unit-tests.c
+++ b/tools/testing/selftests/mm/uffd-unit-tests.c
@@ -543,7 +543,7 @@ static void uffd_minor_test_common(uffd_global_test_opts_t *gopts, bool test_col
 {
 	unsigned long p;
 	pthread_t uffd_mon;
-	char c;
+	char c = '\0';
 	struct uffd_args args = { 0 };
 	args.gopts = gopts;
 
@@ -759,7 +759,7 @@ static void uffd_sigbus_test_common(uffd_global_test_opts_t *gopts, bool wp)
 	pthread_t uffd_mon;
 	pid_t pid;
 	int err;
-	char c;
+	char c = '\0';
 	struct uffd_args args = { 0 };
 	args.gopts = gopts;
 
@@ -819,7 +819,7 @@ static void uffd_events_test_common(uffd_global_test_opts_t *gopts, bool wp)
 	pthread_t uffd_mon;
 	pid_t pid;
 	int err;
-	char c;
+	char c = '\0';
 	struct uffd_args args = { 0 };
 	args.gopts = gopts;
 
@@ -1125,7 +1125,7 @@ uffd_move_test_common(uffd_global_test_opts_t *gopts,
 {
 	unsigned long nr;
 	pthread_t uffd_mon;
-	char c;
+	char c = '\0';
 	unsigned long long count;
 	struct uffd_args args = { 0 };
 	char *orig_area_src = NULL, *orig_area_dst = NULL;