xref: /freebsd/tools/test/stress2/misc/syzkaller4.sh (revision 61e21613) 
1#!/bin/sh
2
3# panic: Assertion mtx_unowned(m) failed at ../../../kern/kern_mutex.c:1179
4# cpuid = 2
5# time = 1581180711
6# KDB: stack backtrace:
7# db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00e57958c0
8# vpanic() at vpanic+0x185/frame 0xfffffe00e5795920
9# panic() at panic+0x43/frame 0xfffffe00e5795980
10# _mtx_destroy() at _mtx_destroy+0x4c/frame 0xfffffe00e57959a0
11# solisten_proto() at solisten_proto+0xdb/frame 0xfffffe00e5795a00
12# tcp6_usr_listen() at tcp6_usr_listen+0x16d/frame 0xfffffe00e5795a60
13# solisten() at solisten+0x42/frame 0xfffffe00e5795a80
14# kern_listen() at kern_listen+0x80/frame 0xfffffe00e5795ac0
15# amd64_syscall() at amd64_syscall+0x2f1/frame 0xfffffe00e5795bf0
16# fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe00e5795bf0
17
18[ `uname -p` = "i386" ] && exit 0
19
20. ../default.cfg
21cat > /tmp/syzkaller4.c <<EOF
22// https://syzkaller.appspot.com/bug?id=db195d1b0b8ca408a46f301eba33f9457bd2d429
23// autogenerated by syzkaller (https://github.com/google/syzkaller)
24
25#define _GNU_SOURCE
26
27#include <sys/types.h>
28
29#include <errno.h>
30#include <pthread.h>
31#include <pwd.h>
32#include <signal.h>
33#include <stdarg.h>
34#include <stdbool.h>
35#include <stdint.h>
36#include <stdio.h>
37#include <stdlib.h>
38#include <string.h>
39#include <sys/endian.h>
40#include <sys/syscall.h>
41#include <sys/wait.h>
42#include <time.h>
43#include <unistd.h>
44
45static void kill_and_wait(int pid, int* status)
46{
47  kill(pid, SIGKILL);
48  while (waitpid(-1, status, 0) != pid) {
49  }
50}
51
52static void sleep_ms(uint64_t ms)
53{
54  usleep(ms * 1000);
55}
56
57static uint64_t current_time_ms(void)
58{
59  struct timespec ts;
60  if (clock_gettime(CLOCK_MONOTONIC, &ts))
61    exit(1);
62  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
63}
64
65static void thread_start(void* (*fn)(void*), void* arg)
66{
67  pthread_t th;
68  pthread_attr_t attr;
69  pthread_attr_init(&attr);
70  pthread_attr_setstacksize(&attr, 128 << 10);
71  int i;
72  for (i = 0; i < 100; i++) {
73    if (pthread_create(&th, &attr, fn, arg) == 0) {
74      pthread_attr_destroy(&attr);
75      return;
76    }
77    if (errno == EAGAIN) {
78      usleep(50);
79      continue;
80    }
81    break;
82  }
83  exit(1);
84}
85
86typedef struct {
87  pthread_mutex_t mu;
88  pthread_cond_t cv;
89  int state;
90} event_t;
91
92static void event_init(event_t* ev)
93{
94  if (pthread_mutex_init(&ev->mu, 0))
95    exit(1);
96  if (pthread_cond_init(&ev->cv, 0))
97    exit(1);
98  ev->state = 0;
99}
100
101static void event_reset(event_t* ev)
102{
103  ev->state = 0;
104}
105
106static void event_set(event_t* ev)
107{
108  pthread_mutex_lock(&ev->mu);
109  if (ev->state)
110    exit(1);
111  ev->state = 1;
112  pthread_mutex_unlock(&ev->mu);
113  pthread_cond_broadcast(&ev->cv);
114}
115
116static void event_wait(event_t* ev)
117{
118  pthread_mutex_lock(&ev->mu);
119  while (!ev->state)
120    pthread_cond_wait(&ev->cv, &ev->mu);
121  pthread_mutex_unlock(&ev->mu);
122}
123
124static int event_isset(event_t* ev)
125{
126  pthread_mutex_lock(&ev->mu);
127  int res = ev->state;
128  pthread_mutex_unlock(&ev->mu);
129  return res;
130}
131
132static int event_timedwait(event_t* ev, uint64_t timeout)
133{
134  uint64_t start = current_time_ms();
135  uint64_t now = start;
136  pthread_mutex_lock(&ev->mu);
137  for (;;) {
138    if (ev->state)
139      break;
140    uint64_t remain = timeout - (now - start);
141    struct timespec ts;
142    ts.tv_sec = remain / 1000;
143    ts.tv_nsec = (remain % 1000) * 1000 * 1000;
144    pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
145    now = current_time_ms();
146    if (now - start > timeout)
147      break;
148  }
149  int res = ev->state;
150  pthread_mutex_unlock(&ev->mu);
151  return res;
152}
153
154struct thread_t {
155  int created, call;
156  event_t ready, done;
157};
158
159static struct thread_t threads[16];
160static void execute_call(int call);
161static int running;
162
163static void* thr(void* arg)
164{
165  struct thread_t* th = (struct thread_t*)arg;
166  for (;;) {
167    event_wait(&th->ready);
168    event_reset(&th->ready);
169    execute_call(th->call);
170    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
171    event_set(&th->done);
172  }
173  return 0;
174}
175
176static void execute_one(void)
177{
178  int i, call, thread;
179  int collide = 0;
180again:
181  for (call = 0; call < 19; call++) {
182    for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
183         thread++) {
184      struct thread_t* th = &threads[thread];
185      if (!th->created) {
186        th->created = 1;
187        event_init(&th->ready);
188        event_init(&th->done);
189        event_set(&th->done);
190        thread_start(thr, th);
191      }
192      if (!event_isset(&th->done))
193        continue;
194      event_reset(&th->done);
195      th->call = call;
196      __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
197      event_set(&th->ready);
198      if (collide && (call % 2) == 0)
199        break;
200      event_timedwait(&th->done, 45);
201      break;
202    }
203  }
204  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
205    sleep_ms(1);
206  if (!collide) {
207    collide = 1;
208    goto again;
209  }
210}
211
212static void execute_one(void);
213
214#define WAIT_FLAGS 0
215
216static void loop(void)
217{
218  int iter __unused;
219  for (iter = 0;; iter++) {
220    int pid = fork();
221    if (pid < 0)
222      exit(1);
223    if (pid == 0) {
224      execute_one();
225      exit(0);
226    }
227    int status = 0;
228    uint64_t start = current_time_ms();
229    for (;;) {
230      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
231        break;
232      sleep_ms(1);
233      if (current_time_ms() - start < 5 * 1000)
234        continue;
235      kill_and_wait(pid, &status);
236      break;
237    }
238  }
239}
240
241uint64_t r[6] = {0x0, 0xffffffffffffffff, 0x0, 0xffffffffffffffff,
242                 0x0, 0xffffffffffffffff};
243
244void execute_call(int call)
245{
246  intptr_t res;
247  switch (call) {
248  case 0:
249    *(uint32_t*)0x20000040 = 0x284002b0;
250    *(uint32_t*)0x20000044 = 0;
251    *(uint32_t*)0x20000048 = 0;
252    *(uint32_t*)0x2000004c = 0;
253    *(uint32_t*)0x20000050 = 0;
254    *(uint32_t*)0x20000054 = 0;
255    *(uint16_t*)0x20000058 = 0;
256    *(uint16_t*)0x2000005a = 0;
257    *(uint64_t*)0x20000060 = 0;
258    *(uint64_t*)0x20000068 = 0;
259    *(uint64_t*)0x20000070 = 0;
260    *(uint64_t*)0x20000078 = 0;
261    *(uint64_t*)0x20000080 = 0;
262    *(uint64_t*)0x20000088 = 0;
263    *(uint64_t*)0x20000090 = 0;
264    syscall(SYS___semctl, 0, 0ul, 0xaul, 0x20000040ul);
265    break;
266  case 1:
267    memcpy(
268        (void*)0x20000340,
269        "\x82\x02\xf3\x89\x9c\x53\x3e\x9e\x79\x9b\xd7\xc7\x3c\xcc\x8e\xf9\xba"
270        "\xb3\x80\xca\x99\xbc\x30\xf1\x8e\x7c\xb0\xc5\x3f\xd6\xa9\xe6\xc6\xa8"
271        "\xa8\x85\x82\x5b\xdf\x69\xb0\xb9\xed\x55\x59\xd8\x3d\x18\x64\x0d\x49"
272        "\xdd\x0c\x5b\xba\x14\x0e\xe4\x61\xce\xcf\x6c\x04\x6a\xa1\xda\xa6\x9a"
273        "\x50\xf8\xa5\xbf\x52\xc2\x63\xf1\x48\xad\xb2\x3e\x5b\x74\xd4\xd3\xe2"
274        "\x77\x4e\xe8\xef\x92\x6d\x3e\xf6\x35\x76\x60\x9b\x83\xfd\xbc\x00\x45"
275        "\xd8\x01\x38\x8b\x7b\x9f\x82\x1e\xf2\xe6\x42\xd3\x73\x00\x00\xc4\x05"
276        "\xc0\xc2\x1a\x82\xc5\x8e\x64\x2d\x07\x86\x09\x4f\xb0\x60\x2a\x5b\xfd"
277        "\x33\x73\x24\x41\xb5\xaa\x99\xd6\xdf\xbe\x06\xc7\x27\x48\x7e\x13\xfb"
278        "\x57\xd6\x2f\xcb\x0c\xda\x92\xcc\xc7\x0f\xb4\x6f\x95\xcb\x5d\x0c\x28"
279        "\x93\x70\xbc\x25\x88\x76\x2f\xd7\x86\x9e\x5e\x03\xfa\x9c\x68\xde\x52"
280        "\x23\xc5\xae\xa1\x1c\x58\x79\x1a\x6f\xfa\x52\x31\xfc\x2b\xd5\x33\x3d"
281        "\x49\x60\x80\xa0\x31\x16\x7e\xa5\xd5\x09\x94\x53\x1e\x3b\x56\x3f\x1e"
282        "\x4d\x95\x76\x44\x9d\x59\x7a\x2d\xbc\xea\xe3\x26\x0d\xf6\x68\xee\xba"
283        "\xc3\xbb\x9f\xb6\xf1\xa2\x44\xc2\x96\xd5\xdc\xc4\x1c\xa2\xaf\xeb\x92"
284        "\x4e\xaf\xfc\x1d\x5d\xaf\x30\x9b\x0b\xfd\x19\x1c\x40\xf9\xd0\x0d\xf5"
285        "\x15\x94\xb7\xe9",
286        276);
287    syscall(SYS_connect, -1, 0x20000340ul, 0x10ul);
288    break;
289  case 2:
290    res = syscall(SYS_semget, 0ul, 0ul, 0x284ul);
291    if (res != -1)
292      r[0] = res;
293    break;
294  case 3:
295    res = syscall(SYS_socket, 0x1cul, 1ul, 0ul);
296    if (res != -1)
297      r[1] = res;
298    break;
299  case 4:
300    syscall(SYS_listen, r[1], 0);
301    break;
302  case 5:
303    res = syscall(SYS_fstat, r[1], 0x20000080ul);
304    if (res != -1)
305      r[2] = *(uint32_t*)0x200000a0;
306    break;
307  case 6:
308    *(uint32_t*)0x20000180 = 0x2840029c;
309    *(uint32_t*)0x20000184 = 0;
310    *(uint32_t*)0x20000188 = 0;
311    *(uint32_t*)0x2000018c = 0;
312    *(uint32_t*)0x20000190 = r[2];
313    *(uint32_t*)0x20000194 = 0;
314    *(uint16_t*)0x20000198 = 0;
315    *(uint16_t*)0x2000019a = 0;
316    *(uint64_t*)0x200001a0 = 0;
317    *(uint64_t*)0x200001a8 = 0;
318    *(uint64_t*)0x200001b0 = 0;
319    *(uint64_t*)0x200001b8 = 0;
320    *(uint64_t*)0x200001c0 = 0;
321    *(uint64_t*)0x200001c8 = 0;
322    *(uint64_t*)0x200001d0 = 0;
323    syscall(SYS___semctl, r[0], 0ul, 0xaul, 0x20000180ul);
324    break;
325  case 7:
326    res = syscall(SYS_socket, 0x1cul, 1ul, 0x84ul);
327    if (res != -1)
328      r[3] = res;
329    break;
330  case 8:
331    syscall(SYS_connect, r[3], 0ul, 0ul);
332    break;
333  case 9:
334    syscall(SYS_fcntl, r[3], 5ul, 0);
335    break;
336  case 10:
337    syscall(SYS_getresuid, 0x20000040ul, 0ul, 0ul);
338    break;
339  case 11:
340    syscall(SYS___semctl, 0, 0ul, 0xaul, 0ul);
341    break;
342  case 12:
343    syscall(SYS___semctl, 0, 0ul, 1ul, 0ul);
344    break;
345  case 13:
346    res = syscall(SYS_semget, 0ul, 0ul, 0x284ul);
347    if (res != -1)
348      r[4] = res;
349    break;
350  case 14:
351    syscall(SYS_freebsd11_fstat, -1, 0ul);
352    break;
353  case 15:
354    syscall(SYS___semctl, r[4], 0ul, 1ul, 0ul);
355    break;
356  case 16:
357    res = syscall(SYS_socket, 0x1cul, 1ul, 0ul);
358    if (res != -1)
359      r[5] = res;
360    break;
361  case 17:
362    syscall(SYS_listen, r[5], 0);
363    break;
364  case 18:
365    syscall(SYS_fstat, r[5], 0ul);
366    break;
367  }
368}
369int main(void)
370{
371  syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul);
372  loop();
373  return 0;
374}
375EOF
376mycc -o /tmp/syzkaller4 -Wall -Wextra -O2 /tmp/syzkaller4.c -lpthread ||
377    exit 1
378
379(cd /tmp; timeout 5m ./syzkaller4)
380
381rm -f /tmp/syzkaller4 /tmp/syzkaller4.c
382exit 0
383