[PATCH] selftests/mm/cow: Fix the incorrect error handling

[Cyan Yang]

There are two error handlings did not check the correct return value.
This patch will fix them.

Fixes: f4b5fd6946e244cdedc3bbb9a1f24c8133b2077a ("selftests/vm: anon_cow: THP 
tests")
Signed-off-by: Cyan Yang <cyan.y...@sifive.com>
---
 tools/testing/selftests/mm/cow.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/mm/cow.c b/tools/testing/selftests/mm/cow.c
index 9446673645eb..16fcadc090a4 100644
--- a/tools/testing/selftests/mm/cow.c
+++ b/tools/testing/selftests/mm/cow.c
@@ -876,13 +876,13 @@ static void do_run_with_thp(test_fn fn, enum thp_run 
thp_run, size_t thpsize)
                mremap_size = thpsize / 2;
                mremap_mem = mmap(NULL, mremap_size, PROT_NONE,
                                  MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-               if (mem == MAP_FAILED) {
+               if (mremap_mem == MAP_FAILED) {
                        ksft_test_result_fail("mmap() failed\n");
                        goto munmap;
                }
                tmp = mremap(mem + mremap_size, mremap_size, mremap_size,
                             MREMAP_MAYMOVE | MREMAP_FIXED, mremap_mem);
-               if (tmp != mremap_mem) {
+               if (tmp == MAP_FAILED) {
                        ksft_test_result_fail("mremap() failed\n");
                        goto munmap;
                }
-- 
2.39.5 (Apple Git-154)