为什么ulimit-v不能在clang的地址下工作?

我在用 libFuzzer 模糊API。

并将它们转换为c++类实例化。

这是通过调用 std::vector::resize() . 向量抛出一个 std::bad_alloc following documentation 关于OOM问题)。

为了降低fuzzer运行时使用的内存量,我希望设置 ulimit -v 并调整进程的可用虚拟内存。但是这样做会导致

==27609==ERROR: AddressSanitizer failed to allocate 0xdfff0001000 (15392894357504) bytes at address 2008fff7000 (errno: 12)
==27609==ReserveShadowMemoryRange failed while trying to map 0xdfff0001000 bytes. Perhaps you're using ulimit -v

为什么地址消毒剂不能在ulmit-v下工作?
我希望它能,那么我也许能更有效地模糊。

我的生成标志是:

copts = [
    "-fsanitize=address,fuzzer",
    "-fsanitize-trap=undefined,integer",
    "-fsanitize-coverage=trace-pc,trace-cmp,trace-pc-guard",
    "-g",
    "-O0",
    "-fno-omit-frame-pointer",
    "-fno-sanitize=vptr",
],
linkopts = [
    "-fsanitize=address,fuzzer",
    "-fsanitize-trap=undefined,integer",
    "-fno-sanitize=vptr",
    "-fsanitize-link-c++-runtime",
],

我试着把旗子关掉,这样我就可以 ulimit 运行fuzzer:

copts = [
    "-fsanitize=fuzzer",
    "-g",
    "-O0",
    "-fno-omit-frame-pointer",
],
linkopts = [
    "-fsanitize=fuzzer",
],

但这会立即导致故障。