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Increase stack size to 128k and guard size to 16k

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This improves our compatibility with Apple M1.
This commit is contained in:
Justine Tunney 2022-12-18 22:58:29 -08:00
parent 57c0dcdc29
commit dd04aeba1c
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GPG key ID: BE714B4575D6E328
36 changed files with 109 additions and 125 deletions
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4
libc/intrin/asan.c
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@ -1458,7 +1458,7 @@ static textstartup void __asan_shadow_mapping(struct MemoryIntervals *m,
static textstartup void __asan_shadow_existing_mappings(void) {
__asan_shadow_mapping(&_mmi, 0);
__asan_map_shadow(GetStackAddr(), GetStackSize());
__asan_poison((void *)GetStackAddr(), PAGESIZE, kAsanStackOverflow);
__asan_poison((void *)GetStackAddr(), GUARDSIZE, kAsanStackOverflow);
}
__attribute__((__constructor__)) void __asan_init(int argc, char **argv,
@ -1482,7 +1482,7 @@ __attribute__((__constructor__)) void __asan_init(int argc, char **argv,
__asan_shadow_existing_mappings();
__asan_map_shadow((uintptr_t)_base, _end - _base);
__asan_map_shadow(0, 4096);
__asan_poison(0, PAGESIZE, kAsanNullPage);
__asan_poison(0, GUARDSIZE, kAsanNullPage);
if (!IsWindows()) {
__sysv_mprotect((void *)0x7fff8000, 0x10000, PROT_READ);
}

1
libc/intrin/extend.c
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@ -75,6 +75,7 @@ noasan void *_extend(void *p, size_t n, void *e, int f, intptr_t h) {
char *q;
_unassert(!((uintptr_t)SHADOW(p) & (G - 1)));
_unassert((uintptr_t)p + (G << kAsanScale) <= h);
// TODO(jart): Make this spin less in non-ASAN mode.
for (q = e; q < ((char *)p + n); q += 8) {
if (!((uintptr_t)q & (G - 1))) {
_unassert(q + G <= (char *)h);