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charset="utf-8" From: Konstantin Khorenko memfd_test.c: In function 'mfd_fail_grow_write.part.0': memfd_test.c:685:13: warning: '' may be used uninitialized [-Wmaybe-uninitialized] 685 | l =3D pwrite(fd, buf, mfd_def_size * 8, 0); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ pwrite() is declared with attribute 'access (read_only, 2, 3)', so GCC knows it reads from the buffer. malloc() returns uninitialized memory, hence the warning. Use calloc() to zero-initialize the buffer. The actual contents don't matter here since the test verifies that pwrite() fails on a sealed memfd. Signed-off-by: Konstantin Khorenko Signed-off-by: Eva Kurchatova --- tools/testing/selftests/memfd/memfd_test.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/memfd/memfd_test.c b/tools/testing/sel= ftests/memfd/memfd_test.c index 2ca07ea7202a..cdab3a837624 100644 --- a/tools/testing/selftests/memfd/memfd_test.c +++ b/tools/testing/selftests/memfd/memfd_test.c @@ -688,9 +688,9 @@ static void mfd_assert_grow_write(int fd) if (hugetlbfs_test) return; =20 - buf =3D malloc(mfd_def_size * 8); + buf =3D calloc(1, mfd_def_size * 8); if (!buf) { - printf("malloc(%zu) failed: %m\n", mfd_def_size * 8); + printf("calloc(1, %zu) failed: %m\n", mfd_def_size * 8); abort(); } =20 --=20 2.54.0 From nobody Tue Jun 9 00:50:26 2026 Received: from DU2PR03CU002.outbound.protection.outlook.com (mail-northeuropeazon11021119.outbound.protection.outlook.com [52.101.65.119]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D6503314D0D; 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charset="utf-8" From: Konstantin Khorenko fuse_test.c: In function 'sealing_thread_fn': fuse_test.c:165:13: warning: unused variable 'sig' [-Wunused-variable] 165 | int sig, r; | ^~~ Remove unused 'sig' to fix -Wunused-variable warning. Signed-off-by: Konstantin Khorenko --- tools/testing/selftests/memfd/fuse_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/memfd/fuse_test.c b/tools/testing/self= tests/memfd/fuse_test.c index dbc171a3806d..510056c1b0d0 100644 --- a/tools/testing/selftests/memfd/fuse_test.c +++ b/tools/testing/selftests/memfd/fuse_test.c @@ -162,7 +162,7 @@ static void *global_p =3D NULL; =20 static int sealing_thread_fn(void *arg) { - int sig, r; + int r; =20 /* * This thread first waits 200ms so any pending operation in the parent --=20 2.54.0