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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/* Copyright 2013-2014 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <config.h>
#define BITS_PER_LONG (sizeof(long) * 8)
/* Don't include this, it's PPC-specific */
#define __CPU_H
static unsigned int cpu_max_pir = 1;
struct cpu_thread {
unsigned int chip_id;
};
#include <stdlib.h>
/* Use these before we undefine them below. */
static inline void *real_malloc(size_t size)
{
return malloc(size);
}
static inline void real_free(void *p)
{
return free(p);
}
#undef malloc
#undef free
#undef realloc
#include <skiboot.h>
#define is_rodata(p) true
#include "../mem_region.c"
#include "../malloc.c"
#include "../device.c"
#include "mem_region-malloc.h"
#define TEST_HEAP_ORDER 12
#define TEST_HEAP_SIZE (1ULL << TEST_HEAP_ORDER)
struct dt_node *dt_root;
void lock(struct lock *l)
{
assert(!l->lock_val);
l->lock_val = 1;
}
void unlock(struct lock *l)
{
assert(l->lock_val);
l->lock_val = 0;
}
bool lock_held_by_me(struct lock *l)
{
return l->lock_val;
}
static bool heap_empty(void)
{
const struct alloc_hdr *h = region_start(&skiboot_heap);
return h->num_longs == skiboot_heap.len / sizeof(long);
}
int main(void)
{
char *test_heap = real_malloc(TEST_HEAP_SIZE);
char *p, *p2, *p3, *p4;
char *pr;
size_t i;
/* Use malloc for the heap, so valgrind can find issues. */
skiboot_heap.start = (unsigned long)test_heap;
skiboot_heap.len = TEST_HEAP_SIZE;
/* Allocations of various sizes. */
for (i = 0; i < TEST_HEAP_ORDER; i++) {
p = malloc(1ULL << i);
assert(p);
assert(p > (char *)test_heap);
assert(p + (1ULL << i) <= (char *)test_heap + TEST_HEAP_SIZE);
assert(!skiboot_heap.free_list_lock.lock_val);
free(p);
assert(!skiboot_heap.free_list_lock.lock_val);
assert(heap_empty());
}
/* Realloc as malloc. */
skiboot_heap.free_list_lock.lock_val = 0;
p = realloc(NULL, 100);
assert(p);
assert(!skiboot_heap.free_list_lock.lock_val);
/* Realloc as free. */
p = realloc(p, 0);
assert(!p);
assert(!skiboot_heap.free_list_lock.lock_val);
assert(heap_empty());
/* Realloc longer. */
p = realloc(NULL, 100);
assert(p);
assert(!skiboot_heap.free_list_lock.lock_val);
p2 = realloc(p, 200);
assert(p2 == p);
assert(!skiboot_heap.free_list_lock.lock_val);
free(p2);
assert(!skiboot_heap.free_list_lock.lock_val);
assert(heap_empty());
/* Realloc shorter. */
skiboot_heap.free_list_lock.lock_val = 0;
p = realloc(NULL, 100);
assert(!skiboot_heap.free_list_lock.lock_val);
assert(p);
p2 = realloc(p, 1);
assert(!skiboot_heap.free_list_lock.lock_val);
assert(p2 == p);
free(p2);
assert(!skiboot_heap.free_list_lock.lock_val);
assert(heap_empty());
/* zalloc failure */
p2 = zalloc(TEST_HEAP_SIZE * 2);
assert(p2 == NULL);
/* Realloc with move. */
p2 = malloc(TEST_HEAP_SIZE - 64 - sizeof(struct alloc_hdr)*2);
memset(p2, 'a', TEST_HEAP_SIZE - 64 - sizeof(struct alloc_hdr)*2);
assert(p2);
p = malloc(64);
memset(p, 'b', 64);
p[63] = 'c';
assert(p);
free(p2);
p2 = realloc(p, 128);
assert(p2 != p);
assert(p2[63] == 'c');
free(p2);
assert(heap_empty());
assert(!skiboot_heap.free_list_lock.lock_val);
/* Realloc with failure to allocate new size */
p2 = malloc(TEST_HEAP_SIZE - sizeof(struct alloc_hdr)*2);
assert(p2);
memset(p2, 'a', TEST_HEAP_SIZE - sizeof(struct alloc_hdr)*2);
p = p2;
p2 = realloc(p, TEST_HEAP_SIZE*2);
assert(p2==NULL);
memset(p, 'b', TEST_HEAP_SIZE - sizeof(struct alloc_hdr)*2);
free(p);
/* Reproduce bug BZ109128/SW257364 */
p = malloc(100);
p2 = malloc(100);
p3 = malloc(100);
p4 = malloc(100);
free(p2);
pr = realloc(p,216);
assert(pr);
free(p3);
free(pr);
free(p4);
assert(heap_empty());
assert(!skiboot_heap.free_list_lock.lock_val);
real_free(test_heap);
return 0;
}
|
