/* * Test very large vma allocations. * The qemu out-of-memory condition was within the mmap syscall itself. * If the syscall actually returns with MAP_FAILED, the test succeeded. */ #include int main() { int n = sizeof(size_t) == 4 ? 32 : 45; for (int i = 28; i < n; i++) { size_t l = (size_t)1 << i; void *p = mmap(0, l, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, -1, 0); if (p == MAP_FAILED) { break; } munmap(p, l); } return 0; }