PR_SET_VMA has been empirically observed to return ENOMEM on kernels …

…without CONFIG_ANON_VMA_NAME,

src/test/prctl.c

@@ -71,11 +71,13 @@ int main(void) {
  test_assert(0 == ret || (-1 == ret && errno == EPERM));
 
  // On a kernel without PR_SET_VMA, this will return EINVAL.
+ // On a kernel with PR_SET_VMA but without CONFIG_ANON_VMA_NAME,
+ // it will return ENOMEM.
  // On a kernel with it, it should return EBADF, because
  // the rr page is not an anonymous mapping.
  ssize_t page_size = sysconf(_SC_PAGE_SIZE);
  test_assert(-1 == prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, 0x7000000, page_size, "foo") &&
- (errno == EINVAL || errno == EBADF));
+ (errno == EINVAL || errno == EBADF || errno == ENOMEM));
 
  atomic_puts("EXIT-SUCCESS");
  return 0;