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fix asan with MI_GUARDED

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This commit is contained in:
daanx 2024-11-17 22:56:26 -08:00
parent d57cb0765d
commit b8dc09e3d2
3 changed files with 8 additions and 2 deletions
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3
src/alloc-aligned.c
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@ -123,6 +123,9 @@ static mi_decl_noinline void* mi_heap_malloc_zero_aligned_at_overalloc(mi_heap_t
if (p != aligned_p) {
mi_track_align(p,aligned_p,adjust,mi_usable_size(aligned_p));
#if MI_GUARDED
mi_track_mem_defined(p, sizeof(mi_block_t));
#endif
}
return aligned_p;
}

5
src/alloc.c
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@ -640,8 +640,9 @@ static void* mi_block_ptr_set_guarded(mi_block_t* block, size_t obj_size) {
// give up to place it right in front of the guard page if the offset is too large for unalignment
offset = MI_BLOCK_ALIGNMENT_MAX;
}
void* p = (uint8_t*)block + offset;
void* p = (uint8_t*)block + offset;
mi_track_align(block, p, offset, obj_size);
mi_track_mem_defined(block, sizeof(mi_block_t));
return p;
}
@ -661,7 +662,7 @@ mi_decl_restrict void* _mi_heap_malloc_guarded(mi_heap_t* heap, size_t size, boo
void* const p = mi_block_ptr_set_guarded(block, obj_size);
// stats
mi_track_malloc(p, size, zero);
mi_track_malloc(p, size, zero);
if (p != NULL) {
if (!mi_heap_is_initialized(heap)) { heap = mi_prim_get_default_heap(); }
#if MI_STAT>1

2
src/os.c
View File

@ -273,7 +273,9 @@ static void* mi_os_prim_alloc_aligned(size_t size, size_t alignment, bool commit
}
else {
// if not aligned, free it, overallocate, and unmap around it
#if !MI_TRACK_ASAN
_mi_warning_message("unable to allocate aligned OS memory directly, fall back to over-allocation (size: 0x%zx bytes, address: %p, alignment: 0x%zx, commit: %d)\n", size, p, alignment, commit);
#endif
mi_os_prim_free(p, size, commit, stats);
if (size >= (SIZE_MAX - alignment)) return NULL; // overflow
const size_t over_size = size + alignment;