Re: [PATCH v3 3/7] selftest/mm: Fix ksm_funtional_test failures

...

}

@@ -338,6 +341,7 @@ static void test_unmerge_zero_pages(void) ksft_test_result(!range_maps_duplicates(map, size), "KSM zero pages were unmerged\n"); unmap:

• ksm_unmerge(); munmap(map, size);

}

@@ -366,6 +370,7 @@ static void test_unmerge_discarded(void) ksft_test_result(!range_maps_duplicates(map, size), "Pages were unmerged\n"); unmap:

• ksm_unmerge(); munmap(map, size);

}

@@ -452,6 +457,7 @@ static void test_unmerge_uffd_wp(void) close_uffd: close(uffd); unmap:

• ksm_unmerge(); munmap(map, size);

} #endif @@ -515,6 +521,7 @@ static int test_child_ksm(void) else if (map == MAP_MERGE_SKIP) return -3;

• ksm_unmerge(); munmap(map, size); return 0;

} @@ -548,6 +555,7 @@ static void test_prctl_fork(void)

child_pid = fork(); if (!child_pid) {

• init_global_file_handles();
  

Would this leave fd in parent as orphan?

Probably yes, but only until the child quits, so likely we don't care.