2022-04-28 02:44:15

by Niels Dossche

[permalink] [raw]
Subject: [PATCH 2/2] selftest/vm: test that mremap fails on non-existent vma

Add a regression test that validates that mremap fails for vma's that
don't exist.

Signed-off-by: Niels Dossche <[email protected]>
---
tools/testing/selftests/vm/hugepage-mremap.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/tools/testing/selftests/vm/hugepage-mremap.c b/tools/testing/selftests/vm/hugepage-mremap.c
index 1d689084a54b..585978f181ed 100644
--- a/tools/testing/selftests/vm/hugepage-mremap.c
+++ b/tools/testing/selftests/vm/hugepage-mremap.c
@@ -178,6 +178,12 @@ int main(int argc, char *argv[])

munmap(addr, length);

+ addr = mremap(addr, length, length, 0);
+ if (addr != MAP_FAILED) {
+ printf("mremap: Expected failure, but call succeeded\n");
+ exit(1);
+ }
+
close(fd);
unlink(argv[argc-1]);

--
2.35.2