1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
//===-- hwasan_new_delete.cpp ---------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is a part of HWAddressSanitizer.
//
// Interceptors for operators new and delete.
//===----------------------------------------------------------------------===//
#include "hwasan.h"
#include "interception/interception.h"
#include "sanitizer_common/sanitizer_allocator.h"
#include "sanitizer_common/sanitizer_allocator_report.h"
#include <stddef.h>
#include <stdlib.h>
#if HWASAN_REPLACE_OPERATORS_NEW_AND_DELETE
// TODO(alekseys): throw std::bad_alloc instead of dying on OOM.
# define OPERATOR_NEW_BODY(nothrow) \
GET_MALLOC_STACK_TRACE; \
void *res = hwasan_malloc(size, &stack); \
if (!nothrow && UNLIKELY(!res)) \
ReportOutOfMemory(size, &stack); \
return res
# define OPERATOR_NEW_ALIGN_BODY(nothrow) \
GET_MALLOC_STACK_TRACE; \
void *res = hwasan_memalign(static_cast<uptr>(align), size, &stack); \
if (!nothrow && UNLIKELY(!res)) \
ReportOutOfMemory(size, &stack); \
return res
# define OPERATOR_DELETE_BODY \
GET_MALLOC_STACK_TRACE; \
if (ptr) \
hwasan_free(ptr, &stack)
#elif defined(__ANDROID__)
// We don't actually want to intercept operator new and delete on Android, but
// since we previously released a runtime that intercepted these functions,
// removing the interceptors would break ABI. Therefore we simply forward to
// malloc and free.
# define OPERATOR_NEW_BODY(nothrow) return malloc(size)
# define OPERATOR_DELETE_BODY free(ptr)
#endif
#ifdef OPERATOR_NEW_BODY
using namespace __hwasan;
// Fake std::nothrow_t to avoid including <new>.
namespace std {
struct nothrow_t {};
} // namespace std
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new(size_t size) {
OPERATOR_NEW_BODY(false /*nothrow*/);
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new[](
size_t size) {
OPERATOR_NEW_BODY(false /*nothrow*/);
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new(
size_t size, std::nothrow_t const &) {
OPERATOR_NEW_BODY(true /*nothrow*/);
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new[](
size_t size, std::nothrow_t const &) {
OPERATOR_NEW_BODY(true /*nothrow*/);
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete(
void *ptr) NOEXCEPT {
OPERATOR_DELETE_BODY;
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[](
void *ptr) NOEXCEPT {
OPERATOR_DELETE_BODY;
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete(
void *ptr, std::nothrow_t const &) {
OPERATOR_DELETE_BODY;
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[](
void *ptr, std::nothrow_t const &) {
OPERATOR_DELETE_BODY;
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete(
void *ptr, size_t) NOEXCEPT {
OPERATOR_DELETE_BODY;
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[](
void *ptr, size_t) NOEXCEPT {
OPERATOR_DELETE_BODY;
}
#endif // OPERATOR_NEW_BODY
#ifdef OPERATOR_NEW_ALIGN_BODY
namespace std {
enum class align_val_t : size_t {};
} // namespace std
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new(
size_t size, std::align_val_t align) {
OPERATOR_NEW_ALIGN_BODY(false /*nothrow*/);
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new[](
size_t size, std::align_val_t align) {
OPERATOR_NEW_ALIGN_BODY(false /*nothrow*/);
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new(
size_t size, std::align_val_t align, std::nothrow_t const &) {
OPERATOR_NEW_ALIGN_BODY(true /*nothrow*/);
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new[](
size_t size, std::align_val_t align, std::nothrow_t const &) {
OPERATOR_NEW_ALIGN_BODY(true /*nothrow*/);
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete(
void *ptr, std::align_val_t align) NOEXCEPT {
OPERATOR_DELETE_BODY;
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[](
void *ptr, std::align_val_t) NOEXCEPT {
OPERATOR_DELETE_BODY;
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete(
void *ptr, std::align_val_t, std::nothrow_t const &) NOEXCEPT {
OPERATOR_DELETE_BODY;
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[](
void *ptr, std::align_val_t, std::nothrow_t const &) NOEXCEPT {
OPERATOR_DELETE_BODY;
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete(
void *ptr, size_t, std::align_val_t) NOEXCEPT {
OPERATOR_DELETE_BODY;
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[](
void *ptr, size_t, std::align_val_t) NOEXCEPT {
OPERATOR_DELETE_BODY;
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete(
void *ptr, size_t, std::align_val_t, std::nothrow_t const &) NOEXCEPT {
OPERATOR_DELETE_BODY;
}
INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[](
void *ptr, size_t, std::align_val_t, std::nothrow_t const &) NOEXCEPT {
OPERATOR_DELETE_BODY;
}
#endif // OPERATOR_NEW_ALIGN_BODY
|
