Symbol: get_userns_fd_cb
tools/testing/selftests/filesystems/utils.c
288
pid = do_clone(get_userns_fd_cb, NULL, CLONE_NEWUSER | CLONE_NEWNS);
tools/testing/selftests/mount_setattr/mount_setattr_test.c
1211
pid = do_clone(get_userns_fd_cb, NULL, CLONE_NEWUSER);