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-rw-r--r--compiler-rt/lib/hwasan/hwasan_allocator.cc5
1 files changed, 3 insertions, 2 deletions
diff --git a/compiler-rt/lib/hwasan/hwasan_allocator.cc b/compiler-rt/lib/hwasan/hwasan_allocator.cc
index 4a4de3e4551..09f1ab94e4b 100644
--- a/compiler-rt/lib/hwasan/hwasan_allocator.cc
+++ b/compiler-rt/lib/hwasan/hwasan_allocator.cc
@@ -17,6 +17,7 @@
#include "hwasan.h"
#include "hwasan_allocator.h"
#include "hwasan_mapping.h"
+#include "hwasan_malloc_bisect.h"
#include "hwasan_thread.h"
#include "hwasan_report.h"
@@ -181,7 +182,7 @@ static void *HwasanAllocate(StackTrace *stack, uptr orig_size, uptr alignment,
// retag to 0.
if ((flags()->tag_in_malloc || flags()->tag_in_free) &&
atomic_load_relaxed(&hwasan_allocator_tagging_enabled)) {
- tag_t tag = flags()->tag_in_malloc
+ tag_t tag = flags()->tag_in_malloc && malloc_bisect(stack, orig_size)
? (t ? t->GenerateRandomTag() : kFallbackAllocTag)
: 0;
user_ptr = (void *)TagMemoryAligned((uptr)user_ptr, size, tag);
@@ -247,7 +248,7 @@ static void HwasanDeallocate(StackTrace *stack, void *tagged_ptr) {
Min(TaggedSize(orig_size), (uptr)flags()->max_free_fill_size);
internal_memset(aligned_ptr, flags()->free_fill_byte, fill_size);
}
- if (flags()->tag_in_free &&
+ if (flags()->tag_in_free && malloc_bisect(stack, 0) &&
atomic_load_relaxed(&hwasan_allocator_tagging_enabled))
TagMemoryAligned(reinterpret_cast<uptr>(aligned_ptr), TaggedSize(orig_size),
t ? t->GenerateRandomTag() : kFallbackFreeTag);
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