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_right_handler()22 void invalid_free_right_handler()
23 {
24 find_and_check_file(GWP_ASAN_LOG_DIR, GWP_ASAN_LOG_TAG, "Invalid (Wild) Free", false);
25 find_and_check_file(GWP_ASAN_LOG_DIR, GWP_ASAN_LOG_TAG, "1 byte to the right", false);
26 find_and_check_file(GWP_ASAN_LOG_DIR, GWP_ASAN_LOG_TAG, "#0.*?gwp_asan", true);
27 clear_log(GWP_ASAN_LOG_DIR, GWP_ASAN_LOG_TAG);
28 cancel_gwp_asan_environment(true);
29 _exit(0);
30 }
31
install_sigv_handler()32 static void install_sigv_handler()
33 {
34 struct sigaction sigv = {
35 .sa_handler = invalid_free_right_handler,
36 .sa_flags = 0,
37 };
38 sigaction(SIGSEGV, &sigv, NULL);
39 }
40
invalid_free_right_test()41 void invalid_free_right_test()
42 {
43 config_gwp_asan_environment(true);
44 clear_log(GWP_ASAN_LOG_DIR, GWP_ASAN_LOG_TAG);
45 install_sigv_handler();
46
47 char *ptr = (char *)malloc(1);
48 if (!ptr) {
49 t_error("malloc failed.");
50 return;
51 }
52 if (!libc_gwp_asan_ptr_is_mine(ptr)) {
53 t_error("Memory is not allocated by gwp_asan.");
54 return;
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_right_test();
66 } else { // parent process
67 int status;
68 if (waitpid(pid, &status, 0) != pid) {
69 t_error("gwp_asan_invalid_free_right_test waitpid failed.");
70 }
71
72 if (WIFEXITED(status) && WEXITSTATUS(status) != 0) {
73 t_error("gwp_asan_invalid_free_right_test failed.");
74 }
75
76 cancel_gwp_asan_environment(true);
77 }
78
79 return t_status;
80 }
81