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8358289: [asan] runtime/cds/appcds/aotCode/AOTCodeFlags.java reports heap-buffer-overflow in ArchiveBuilder

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Reviewed-by: shade, iklam, asmehra
This commit is contained in:
Vladimir Kozlov 2025-06-04 02:14:17 +00:00
parent 939521b8e4
commit ebd85288ce
2 changed files with 14 additions and 10 deletions
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23
src/hotspot/share/runtime/sharedRuntime.cpp
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@ -2199,10 +2199,11 @@ class AdapterFingerPrint : public MetaspaceObj {
}
// Private construtor. Use allocate() to get an instance.
AdapterFingerPrint(int total_args_passed, BasicType* sig_bt) {
AdapterFingerPrint(int total_args_passed, BasicType* sig_bt, int len) {
int* data = data_pointer();
// Pack the BasicTypes with 8 per int
_length = length(total_args_passed);
assert(len == length(total_args_passed), "sanity");
_length = len;
int sig_index = 0;
for (int index = 0; index < _length; index++) {
int value = 0;
@ -2217,16 +2218,15 @@ class AdapterFingerPrint : public MetaspaceObj {
// Call deallocate instead
~AdapterFingerPrint() {
FreeHeap(this);
ShouldNotCallThis();
}
static int length(int total_args) {
return (total_args + (_basic_types_per_int-1)) / _basic_types_per_int;
}
static int compute_size(int total_args_passed, BasicType* sig_bt) {
int len = length(total_args_passed);
return sizeof(AdapterFingerPrint) + (len * sizeof(int));
static int compute_size_in_words(int len) {
return (int)heap_word_size(sizeof(AdapterFingerPrint) + (len * sizeof(int)));
}
// Remap BasicTypes that are handled equivalently by the adapters.
@ -2289,12 +2289,15 @@ class AdapterFingerPrint : public MetaspaceObj {
public:
static AdapterFingerPrint* allocate(int total_args_passed, BasicType* sig_bt) {
int size_in_bytes = compute_size(total_args_passed, sig_bt);
return new (size_in_bytes) AdapterFingerPrint(total_args_passed, sig_bt);
int len = length(total_args_passed);
int size_in_bytes = BytesPerWord * compute_size_in_words(len);
AdapterFingerPrint* afp = new (size_in_bytes) AdapterFingerPrint(total_args_passed, sig_bt, len);
assert((afp->size() * BytesPerWord) == size_in_bytes, "should match");
return afp;
}
static void deallocate(AdapterFingerPrint* fp) {
fp->~AdapterFingerPrint();
FreeHeap(fp);
}
int value(int index) {
@ -2418,7 +2421,7 @@ class AdapterFingerPrint : public MetaspaceObj {
// methods required by virtue of being a MetaspaceObj
void metaspace_pointers_do(MetaspaceClosure* it) { return; /* nothing to do here */ }
int size() const { return (int)heap_word_size(sizeof(AdapterFingerPrint) + (_length * sizeof(int))); }
int size() const { return compute_size_in_words(_length); }
MetaspaceObj::Type type() const { return AdapterFingerPrintType; }
static bool equals(AdapterFingerPrint* const& fp1, AdapterFingerPrint* const& fp2) {

1
src/hotspot/share/runtime/sharedRuntime.hpp
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@ -711,6 +711,7 @@ class AdapterHandlerEntry : public MetaspaceObj {
// Dummy argument is used to avoid C++ warning about using
// deleted opearator MetaspaceObj::delete().
void* operator new(size_t size, size_t dummy) throw() {
assert(size == BytesPerWord * heap_word_size(sizeof(AdapterHandlerEntry)), "should match");
void* p = AllocateHeap(size, mtCode);
memset(p, 0, size);
return p;