Reviewed-by: Vasileios Almpanis <[email protected]>
On 3/23/26 9:31 PM, Konstantin Khorenko wrote:
memfd_test.c: In function 'mfd_fail_grow_write.part.0': memfd_test.c:685:13: warning: '<unknown>' may be used uninitialized [-Wmaybe-uninitialized] 685 | l = 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. https://virtuozzo.atlassian.net/browse/VSTOR-127529 Signed-off-by: Konstantin Khorenko <[email protected]> Feature: fix selftests Made-with: Cursor --- tools/testing/selftests/memfd/memfd_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/memfd/memfd_test.c b/tools/testing/selftests/memfd/memfd_test.c index 95af2d78fd31..a6fb7128a5ac 100644 --- a/tools/testing/selftests/memfd/memfd_test.c +++ b/tools/testing/selftests/memfd/memfd_test.c @@ -676,7 +676,7 @@ static void mfd_fail_grow_write(int fd) if (hugetlbfs_test) return;- buf = malloc(mfd_def_size * 8);+ buf = calloc(1, mfd_def_size * 8); if (!buf) { printf("malloc(%zu) failed: %m\n", mfd_def_size * 8); abort();
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