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();
--
2.47.1
_______________________________________________
Devel mailing list
[email protected]
https://lists.openvz.org/mailman/listinfo/devel
