1 /**
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <signal.h>
17 #include <stdio.h>
18 #include <sys/wait.h>
19 #include "gwp_asan_test.h"
20 #include "test.h"
21
invalid_free_left_handler()22 void invalid_free_left_handler()
23 {
24 find_and_check_file(GWP_ASAN_LOG_DIR, GWP_ASAN_LOG_TAG, "Invalid (Wild) Free");
25 find_and_check_file(GWP_ASAN_LOG_DIR, GWP_ASAN_LOG_TAG, "1 byte to the left");
26 clear_log(GWP_ASAN_LOG_DIR, GWP_ASAN_LOG_TAG);
27 cancel_gwp_asan_environment(true);
28 _exit(0);
29 }
30
install_sigv_handler()31 static void install_sigv_handler()
32 {
33 struct sigaction sigv = {
34 .sa_handler = invalid_free_left_handler,
35 .sa_flags = 0,
36 };
37 sigaction(SIGSEGV, &sigv, NULL);
38 }
39
invalid_free_left_test()40 void invalid_free_left_test()
41 {
42 config_gwp_asan_environment(true);
43 clear_log(GWP_ASAN_LOG_DIR, GWP_ASAN_LOG_TAG);
44 install_sigv_handler();
45
46 char *ptr = (char *)malloc(1);
47 if (!ptr) {
48 t_error("malloc failed.");
49 return;
50 }
51 if (!libc_gwp_asan_ptr_is_mine(ptr)) {
52 t_error("Memory is not allocated by gwp_asan.");
53 return;
54 }
55
56 free(ptr - 1);
57 }
58
main()59 int main()
60 {
61 pid_t pid = fork();
62 if (pid < 0) {
63 t_error("FAIL fork failed.");
64 } else if (pid == 0) { // child process
65 invalid_free_left_test();
66 } else { // parent process
67 int status;
68 if (waitpid(pid, &status, 0) != pid) {
69 t_error("gwp_asan_invalid_free_left_test waitpid failed.");
70 }
71
72 if (WIFEXITED(status) && WEXITSTATUS(status) != 0) {
73 t_error("gwp_asan_invalid_free_left_test failed.");
74 }
75
76 cancel_gwp_asan_environment(true);
77 }
78
79 return t_status;
80 }