没忍住，将相关的一个函数细读了一遍，strace 看到的这些就能理解了 mmap(NULL, 134217728, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7ff108604000 munmap(0x7ff108604000, 60801024) = 0 munmap(0x7ff110000000, 6307840) = 0
