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[NFC][hwasan] Collect heap related data early (#66682)

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This commit is contained in:
Vitaly Buka 2023-09-18 00:15:28 -07:00
parent a668c0f687
commit dc810e880f
1 changed files with 27 additions and 11 deletions
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38
compiler-rt/lib/hwasan/hwasan_report.cpp
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@ -458,6 +458,17 @@ class BaseReport {
access_size(access_size),
untagged_addr(UntagAddr(tagged_addr)),
ptr_tag(GetTagFromPointer(tagged_addr)) {
if (MemIsShadow(untagged_addr))
return;
HwasanChunkView chunk = FindHeapChunkByAddress(untagged_addr);
heap.begin = chunk.Beg();
if (heap.begin) {
heap.size = chunk.ActualSize();
heap.from_small_heap = chunk.FromSmallHeap();
heap.is_allocated = chunk.IsAllocated();
}
hwasanThreadList().VisitAllLiveThreads([&](Thread *t) {
if (stack_allocations_count < ARRAY_SIZE(stack_allocations) &&
t->AddrIsInStack(untagged_addr)) {
@ -475,8 +486,16 @@ class BaseReport {
uptr access_size = 0;
uptr untagged_addr = 0;
tag_t ptr_tag = 0;
uptr stack_allocations_count = 0;
SavedStackAllocations stack_allocations[16];
struct {
uptr begin = 0;
uptr size = 0;
bool from_small_heap = false;
bool is_allocated = false;
} heap;
};
void BaseReport::PrintAddressDescription() const {
@ -490,17 +509,14 @@ void BaseReport::PrintAddressDescription() const {
}
// Print some very basic information about the address, if it's a heap.
HwasanChunkView chunk = FindHeapChunkByAddress(untagged_addr);
if (uptr beg = chunk.Beg()) {
uptr size = chunk.ActualSize();
Printf("%s[%p,%p) is a %s %s heap chunk; "
"size: %zd offset: %zd\n%s",
d.Location(),
beg, beg + size,
chunk.FromSmallHeap() ? "small" : "large",
chunk.IsAllocated() ? "allocated" : "unallocated",
size, untagged_addr - beg,
d.Default());
if (heap.begin) {
Printf(
"%s[%p,%p) is a %s %s heap chunk; "
"size: %zd offset: %zd\n%s",
d.Location(), heap.begin, heap.begin + heap.size,
heap.from_small_heap ? "small" : "large",
heap.is_allocated ? "allocated" : "unallocated", heap.size,
untagged_addr - heap.begin, d.Default());
}
// Check stack first. If the address is on the stack of a live thread, we