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
|
// Test the behavior of malloc/calloc/realloc when the allocation causes OOM
// in the secondary allocator.
// By default (allocator_may_return_null=0) the process should crash.
// With allocator_may_return_null=1 the allocator should return 0.
// Set the limit to 20.5T on 64 bits to account for ASan shadow memory,
// allocator buffers etc. so that the test allocation of ~1T will trigger OOM.
// Limit this test to Linux since we're relying on allocator internal
// limits (shadow memory size, allocation limits etc.)
// RUN: %clangxx_asan -O0 %s -o %t
// RUN: ulimit -v 22024290304
// RUN: not %run %t malloc 2>&1 \
// RUN: | FileCheck %s --check-prefixes=CHECK-MALLOC,CHECK-CRASH
// RUN: %env_asan_opts=allocator_may_return_null=0 not %run %t malloc 2>&1 \
// RUN: | FileCheck %s --check-prefixes=CHECK-MALLOC,CHECK-CRASH
// RUN: %env_asan_opts=allocator_may_return_null=1 %run %t malloc 2>&1 \
// RUN: | FileCheck %s --check-prefixes=CHECK-MALLOC,CHECK-NULL
// RUN: %env_asan_opts=allocator_may_return_null=0 not %run %t calloc 2>&1 \
// RUN: | FileCheck %s --check-prefixes=CHECK-CALLOC,CHECK-CRASH
// RUN: %env_asan_opts=allocator_may_return_null=1 %run %t calloc 2>&1 \
// RUN: | FileCheck %s --check-prefixes=CHECK-CALLOC,CHECK-NULL
// RUN: %env_asan_opts=allocator_may_return_null=0 not %run %t realloc 2>&1 \
// RUN: | FileCheck %s --check-prefixes=CHECK-REALLOC,CHECK-CRASH
// RUN: %env_asan_opts=allocator_may_return_null=1 %run %t realloc 2>&1 \
// RUN: | FileCheck %s --check-prefixes=CHECK-REALLOC,CHECK-NULL
// RUN: %env_asan_opts=allocator_may_return_null=0 not %run %t realloc-after-malloc 2>&1 \
// RUN: | FileCheck %s --check-prefixes=CHECK-MALLOC-REALLOC,CHECK-CRASH
// RUN: %env_asan_opts=allocator_may_return_null=1 %run %t realloc-after-malloc 2>&1 \
// RUN: | FileCheck %s --check-prefixes=CHECK-MALLOC-REALLOC,CHECK-NULL
// ASan shadow memory on s390 is too large for this test.
// AArch64 bots fail on this test.
// TODO(alekseys): Android lit do not run ulimit on device.
// REQUIRES: shadow-scale-3
// UNSUPPORTED: s390,android,arm,aarch64
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>
int main(int argc, char **argv) {
assert(argc == 2);
const char *action = argv[1];
fprintf(stderr, "%s:\n", action);
// Allocate just a bit less than max allocation size enforced by ASan's
// allocator (currently 1T and 3G).
const size_t size =
#if __LP64__
(1ULL << 40) - (1ULL << 30);
#else
(3ULL << 30) - (1ULL << 20);
#endif
void *x = 0;
if (!strcmp(action, "malloc")) {
x = malloc(size);
} else if (!strcmp(action, "calloc")) {
x = calloc(size / 4, 4);
} else if (!strcmp(action, "realloc")) {
x = realloc(0, size);
} else if (!strcmp(action, "realloc-after-malloc")) {
char *t = (char*)malloc(100);
*t = 42;
x = realloc(t, size);
assert(*t == 42);
free(t);
} else {
assert(0);
}
// The NULL pointer is printed differently on different systems, while (long)0
// is always the same.
fprintf(stderr, "x: %lx\n", (long)x);
free(x);
return x != 0;
}
// CHECK-MALLOC: malloc:
// CHECK-CALLOC: calloc:
// CHECK-REALLOC: realloc:
// CHECK-MALLOC-REALLOC: realloc-after-malloc:
// CHECK-CRASH: AddressSanitizer's allocator is terminating the process
// CHECK-NULL: x: 0
|
