blob: 36896c5fa7335a533f39a081dc0a5cf6b8269e2e (
plain) (
blame)
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
|
/* fail - crash in various possible ways */
#include <linux/seccomp.h>
#include <sys/prctl.h>
#include <sys/ptrace.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
void
segfault() {
volatile int *nullp = 0;
*nullp = 42;
}
// can lockup your machine
void
oom() {
long c = 0;
static long last = 0;
int fd;
fd = open("/proc/self/oom_score_adj", O_WRONLY);
write(fd, "1000\n", 5);
close(fd);
while (1) {
long *m = malloc(4096*4096);
m[0] = last;
m[1] = c++;
last = (long)m;
write(1, ".", 1);
}
}
void
recurse(char *n) {
char m[1024];
recurse(m);
if (n)
m[0] = n[0] = 42;
}
void
abortme() {
abort();
}
void
killme() {
raise(SIGKILL);
}
void illegalins() {
#if defined(__x86_64__) || defined(__i386__)
__asm__ __volatile__( "ud1" : : : "memory" );
#elif defined(__arm__)
__asm__ __volatile__(
#ifndef __thumb__
".word 0xe7f000f0"
#else
".short 0xdeff"
#endif
: : : "memory");
#elif defined(__aarch64__)
__asm__ __volatile__( ".word 0x00800011" : : : "memory" );
#else
#error implement illegalins for this architecture
#endif
}
void trap() {
__builtin_trap();
}
int zero = 0;
void divtrap() {
zero = 1/zero;
}
void
violate_seccomp() {
prctl(PR_SET_SECCOMP, SECCOMP_MODE_STRICT);
chdir("/");
}
int
main(int argc, char *argv[]) {
int c;
while ((c = getopt(argc, argv, "123Oacdikrst")) != -1) {
switch (c) {
case '1': exit(-1); break;
case '2': exit(2); break;
case '3': exit(111); break;
case 'c': violate_seccomp(); break;
case 'd': divtrap(); break;
case 'i': illegalins(); break;
case 't': trap(); break;
case 'O': oom(); break;
case 'a': abortme(); break;
case 'k': killme(); break;
case 'r': recurse(0); break;
case 's': segfault(); break;
}
}
write(2, "Usage: fail [-123Oacdikrst]", 8);
exit(1);
}
|