syzkaller-repros/linux/1567c237bba3cc797a6723feca401104a3dfaa5e.c

// general protection fault in perf_output_read
// https://syzkaller.appspot.com/bug?id=1567c237bba3cc797a6723feca401104a3dfaa5e
// status:open
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <errno.h>
#include <linux/futex.h>
#include <pthread.h>
#include <sched.h>
#include <signal.h>
#include <signal.h>
#include <stdarg.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

__attribute__((noreturn)) static void doexit(int status)
{
  volatile unsigned i;
  syscall(__NR_exit_group, status);
  for (i = 0;; i++) {
  }
}
#include <errno.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>

const int kFailStatus = 67;
const int kRetryStatus = 69;

static void fail(const char* msg, ...)
{
  int e = errno;
  va_list args;
  va_start(args, msg);
  vfprintf(stderr, msg, args);
  va_end(args);
  fprintf(stderr, " (errno %d)\n", e);
  doexit((e == ENOMEM || e == EAGAIN) ? kRetryStatus : kFailStatus);
}

static void exitf(const char* msg, ...)
{
  int e = errno;
  va_list args;
  va_start(args, msg);
  vfprintf(stderr, msg, args);
  va_end(args);
  fprintf(stderr, " (errno %d)\n", e);
  doexit(kRetryStatus);
}

#define BITMASK_LEN(type, bf_len) (type)((1ull << (bf_len)) - 1)

#define BITMASK_LEN_OFF(type, bf_off, bf_len)                                  \
  (type)(BITMASK_LEN(type, (bf_len)) << (bf_off))

#define STORE_BY_BITMASK(type, addr, val, bf_off, bf_len)                      \
  if ((bf_off) == 0 && (bf_len) == 0) {                                        \
    *(type*)(addr) = (type)(val);                                              \
  } else {                                                                     \
    type new_val = *(type*)(addr);                                             \
    new_val &= ~BITMASK_LEN_OFF(type, (bf_off), (bf_len));                     \
    new_val |= ((type)(val)&BITMASK_LEN(type, (bf_len))) << (bf_off);          \
    *(type*)(addr) = new_val;                                                  \
  }

static uint64_t current_time_ms()
{
  struct timespec ts;

  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    fail("clock_gettime failed");
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static void use_temporary_dir()
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    fail("failed to mkdtemp");
  if (chmod(tmpdir, 0777))
    fail("failed to chmod");
  if (chdir(tmpdir))
    fail("failed to chdir");
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  setsid();

  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = 160 << 20;
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 8 << 20;
  setrlimit(RLIMIT_MEMLOCK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 136 << 20;
  setrlimit(RLIMIT_FSIZE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_STACK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 0;
  setrlimit(RLIMIT_CORE, &rlim);

  if (unshare(CLONE_NEWNS)) {
  }
  if (unshare(CLONE_NEWIPC)) {
  }
  if (unshare(0x02000000)) {
  }
  if (unshare(CLONE_NEWUTS)) {
  }
  if (unshare(CLONE_SYSVSEM)) {
  }
}

int wait_for_loop(int pid)
{
  if (pid < 0)
    fail("sandbox fork failed");
  int status = 0;
  while (waitpid(-1, &status, __WALL) != pid) {
  }
  return WEXITSTATUS(status);
}

static int do_sandbox_none(void)
{
  if (unshare(CLONE_NEWPID)) {
  }
  int pid = fork();
  if (pid != 0)
    return wait_for_loop(pid);

  sandbox_common();
  if (unshare(CLONE_NEWNET)) {
  }
  loop();
  doexit(1);
}

static void remove_dir(const char* dir)
{
  DIR* dp;
  struct dirent* ep;
  int iter = 0;
retry:
  while (umount2(dir, MNT_DETACH) == 0) {
  }
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exitf("opendir(%s) failed due to NOFILE, exiting", dir);
    }
    exitf("opendir(%s) failed", dir);
  }
  while ((ep = readdir(dp))) {
    if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
      continue;
    char filename[FILENAME_MAX];
    snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
    while (umount2(filename, MNT_DETACH) == 0) {
    }
    struct stat st;
    if (lstat(filename, &st))
      exitf("lstat(%s) failed", filename);
    if (S_ISDIR(st.st_mode)) {
      remove_dir(filename);
      continue;
    }
    int i;
    for (i = 0;; i++) {
      if (unlink(filename) == 0)
        break;
      if (errno == EROFS) {
        break;
      }
      if (errno != EBUSY || i > 100)
        exitf("unlink(%s) failed", filename);
      if (umount2(filename, MNT_DETACH))
        exitf("umount(%s) failed", filename);
    }
  }
  closedir(dp);
  int i;
  for (i = 0;; i++) {
    if (rmdir(dir) == 0)
      break;
    if (i < 100) {
      if (errno == EROFS) {
        break;
      }
      if (errno == EBUSY) {
        if (umount2(dir, MNT_DETACH))
          exitf("umount(%s) failed", dir);
        continue;
      }
      if (errno == ENOTEMPTY) {
        if (iter < 100) {
          iter++;
          goto retry;
        }
      }
    }
    exitf("rmdir(%s) failed", dir);
  }
}

static void execute_one();
extern unsigned long long procid;

static void loop()
{
  int iter;
  for (iter = 0;; iter++) {
    char cwdbuf[32];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      fail("failed to mkdir");
    int pid = fork();
    if (pid < 0)
      fail("clone failed");
    if (pid == 0) {
      prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
      setpgrp();
      if (chdir(cwdbuf))
        fail("failed to chdir");
      execute_one();
      int fd;
      for (fd = 3; fd < 30; fd++)
        close(fd);
      doexit(0);
    }

    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      int res = waitpid(-1, &status, __WALL | WNOHANG);
      if (res == pid) {
        break;
      }
      usleep(1000);
      if (current_time_ms() - start < 5 * 1000)
        continue;
      kill(-pid, SIGKILL);
      kill(pid, SIGKILL);
      while (waitpid(-1, &status, __WALL) != pid) {
      }
      break;
    }
    remove_dir(cwdbuf);
  }
}

struct thread_t {
  int created, running, call;
  pthread_t th;
};

static struct thread_t threads[16];
static void execute_call(int call);
static int running;

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    while (!__atomic_load_n(&th->running, __ATOMIC_ACQUIRE))
      syscall(SYS_futex, &th->running, FUTEX_WAIT, 0, 0);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    __atomic_store_n(&th->running, 0, __ATOMIC_RELEASE);
    syscall(SYS_futex, &th->running, FUTEX_WAKE);
  }
  return 0;
}

static void execute(int num_calls)
{
  int call, thread;
  running = 0;
  for (call = 0; call < num_calls; call++) {
    for (thread = 0; thread < sizeof(threads) / sizeof(threads[0]); thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        pthread_attr_t attr;
        pthread_attr_init(&attr);
        pthread_attr_setstacksize(&attr, 128 << 10);
        pthread_create(&th->th, &attr, thr, th);
      }
      if (!__atomic_load_n(&th->running, __ATOMIC_ACQUIRE)) {
        th->call = call;
        __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        __atomic_store_n(&th->running, 1, __ATOMIC_RELEASE);
        syscall(SYS_futex, &th->running, FUTEX_WAKE);
        struct timespec ts;
        ts.tv_sec = 0;
        ts.tv_nsec = 20 * 1000 * 1000;
        syscall(SYS_futex, &th->running, FUTEX_WAIT, 1, &ts);
        if (__atomic_load_n(&running, __ATOMIC_RELAXED))
          usleep((call == num_calls - 1) ? 10000 : 1000);
        break;
      }
    }
  }
}

uint64_t r[5] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0xffffffffffffffff};
void execute_call(int call)
{
  long res;
  switch (call) {
  case 0:
    *(uint64_t*)0x200000c0 = 9;
    syscall(__NR_sched_setaffinity, 0, 0x3cb, 0x200000c0);
    break;
  case 1:
    *(uint32_t*)0x20000040 = 1;
    *(uint32_t*)0x20000044 = 0x70;
    *(uint8_t*)0x20000048 = 0;
    *(uint8_t*)0x20000049 = 0;
    *(uint8_t*)0x2000004a = 0;
    *(uint8_t*)0x2000004b = 0;
    *(uint32_t*)0x2000004c = 0;
    *(uint64_t*)0x20000050 = 0x50d;
    *(uint64_t*)0x20000058 = 0;
    *(uint64_t*)0x20000060 = 0;
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 0, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 1, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 2, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 3, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 4, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 5, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 6, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 7, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 8, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 9, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 10, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 11, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 12, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 13, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 14, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 15, 2);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 17, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 18, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 19, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 20, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 21, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 22, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 23, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 24, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 25, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 26, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 27, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 28, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 29, 35);
    *(uint32_t*)0x20000070 = 0;
    *(uint32_t*)0x20000074 = 0;
    *(uint64_t*)0x20000078 = 0x20000000;
    *(uint64_t*)0x20000080 = 0;
    *(uint64_t*)0x20000088 = 0;
    *(uint64_t*)0x20000090 = 0;
    *(uint32_t*)0x20000098 = 0;
    *(uint32_t*)0x2000009c = 0;
    *(uint64_t*)0x200000a0 = 0;
    *(uint32_t*)0x200000a8 = 0;
    *(uint16_t*)0x200000ac = 0;
    *(uint16_t*)0x200000ae = 0;
    res = syscall(__NR_perf_event_open, 0x20000040, 0, 0, -1, 0);
    if (res != -1)
      r[0] = res;
    break;
  case 2:
    memcpy((void*)0x20000180, "/dev/zero", 10);
    res = syscall(__NR_openat, 0xffffffffffffff9c, 0x20000180, 1, 0);
    if (res != -1)
      r[1] = res;
    break;
  case 3:
    syscall(__NR_ioctl, r[1], 0x4b32, 0);
    break;
  case 4:
    *(uint32_t*)0x20000480 = 0;
    *(uint32_t*)0x20000484 = 0;
    *(uint32_t*)0x20000488 = 0;
    *(uint32_t*)0x2000048c = 0;
    *(uint32_t*)0x20000490 = 0;
    *(uint8_t*)0x20000494 = 0;
    *(uint8_t*)0x20000495 = 0;
    *(uint8_t*)0x20000496 = 0;
    *(uint8_t*)0x20000497 = 0;
    *(uint8_t*)0x20000498 = 0;
    *(uint8_t*)0x20000499 = 0;
    *(uint8_t*)0x2000049a = 0;
    *(uint8_t*)0x2000049b = 0;
    *(uint8_t*)0x2000049c = 0;
    *(uint8_t*)0x2000049d = 0;
    *(uint8_t*)0x2000049e = 0;
    *(uint8_t*)0x2000049f = 0;
    *(uint8_t*)0x200004a0 = 0;
    *(uint8_t*)0x200004a1 = 0;
    *(uint8_t*)0x200004a2 = 0;
    *(uint8_t*)0x200004a3 = 0;
    *(uint8_t*)0x200004a4 = 0;
    *(uint8_t*)0x200004a5 = 0;
    *(uint8_t*)0x200004a6 = 0;
    *(uint8_t*)0x200004a7 = 0;
    *(uint8_t*)0x200004a8 = 0;
    *(uint8_t*)0x200004a9 = 0;
    *(uint8_t*)0x200004aa = 0;
    *(uint8_t*)0x200004ab = 0;
    *(uint8_t*)0x200004ac = 0;
    *(uint8_t*)0x200004ad = 0;
    *(uint8_t*)0x200004ae = 0;
    *(uint8_t*)0x200004af = 0;
    *(uint8_t*)0x200004b0 = 0;
    *(uint8_t*)0x200004b1 = 0;
    *(uint8_t*)0x200004b2 = 0;
    *(uint8_t*)0x200004b3 = 0;
    *(uint8_t*)0x200004b4 = 0;
    *(uint8_t*)0x200004b5 = 0;
    *(uint8_t*)0x200004b6 = 0;
    *(uint8_t*)0x200004b7 = 0;
    *(uint8_t*)0x200004b8 = 0;
    *(uint8_t*)0x200004b9 = 0;
    *(uint8_t*)0x200004ba = 0;
    *(uint8_t*)0x200004bb = 0;
    *(uint8_t*)0x200004bc = 0;
    *(uint8_t*)0x200004bd = 0;
    *(uint8_t*)0x200004be = 0;
    *(uint8_t*)0x200004bf = 0;
    *(uint8_t*)0x200004c0 = 0;
    *(uint8_t*)0x200004c1 = 0;
    *(uint8_t*)0x200004c2 = 0;
    *(uint8_t*)0x200004c3 = 0;
    *(uint8_t*)0x200004c4 = 0;
    *(uint8_t*)0x200004c5 = 0;
    *(uint8_t*)0x200004c6 = 0;
    *(uint8_t*)0x200004c7 = 0;
    *(uint8_t*)0x200004c8 = 0;
    *(uint8_t*)0x200004c9 = 0;
    *(uint8_t*)0x200004ca = 0;
    *(uint8_t*)0x200004cb = 0;
    *(uint8_t*)0x200004cc = 0;
    *(uint8_t*)0x200004cd = 0;
    *(uint8_t*)0x200004ce = 0;
    *(uint8_t*)0x200004cf = 0;
    syscall(__NR_ioctl, -1, 0x40505412, 0x20000480);
    break;
  case 5:
    syscall(__NR_fchown, -1, 0, 0);
    break;
  case 6:
    *(uint32_t*)0x20c86f88 = 2;
    *(uint32_t*)0x20c86f8c = 0x70;
    *(uint8_t*)0x20c86f90 = -1;
    *(uint8_t*)0x20c86f91 = 0;
    *(uint8_t*)0x20c86f92 = 0;
    *(uint8_t*)0x20c86f93 = 0;
    *(uint32_t*)0x20c86f94 = 0;
    *(uint64_t*)0x20c86f98 = 2;
    *(uint64_t*)0x20c86fa0 = 0xfd;
    *(uint64_t*)0x20c86fa8 = 8;
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 0, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 1, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 2, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 3, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 4, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 5, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 6, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 7, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 8, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 9, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 10, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 11, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 12, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 13, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 14, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 15, 2);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 17, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 18, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 19, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 20, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 4, 21, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 22, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 23, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 2, 24, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 25, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 26, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 27, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 28, 1);
    STORE_BY_BITMASK(uint64_t, 0x20c86fb0, 0, 29, 35);
    *(uint32_t*)0x20c86fb8 = 0xfffffffe;
    *(uint32_t*)0x20c86fbc = 0;
    *(uint64_t*)0x20c86fc0 = 0x20000000;
    *(uint64_t*)0x20c86fc8 = 0;
    *(uint64_t*)0x20c86fd0 = 0x1e;
    *(uint64_t*)0x20c86fd8 = 0;
    *(uint32_t*)0x20c86fe0 = 0;
    *(uint32_t*)0x20c86fe4 = 0;
    *(uint64_t*)0x20c86fe8 = 0;
    *(uint32_t*)0x20c86ff0 = 0;
    *(uint16_t*)0x20c86ff4 = 0;
    *(uint16_t*)0x20c86ff6 = 0;
    res = syscall(__NR_perf_event_open, 0x20c86f88, 0, 0, r[0], 0);
    if (res != -1)
      r[2] = res;
    break;
  case 7:
    memcpy((void*)0x200001c0, "/selinux/status", 16);
    res = syscall(__NR_openat, 0xffffffffffffff9c, 0x200001c0, 0, 0);
    if (res != -1)
      r[3] = res;
    break;
  case 8:
    syscall(__NR_fcntl, -1, 0x40d, 0x20000100);
    break;
  case 9:
    syscall(__NR_mmap, 0x201bf000, 0x2000, 0, 0x4011, r[2], 0);
    break;
  case 10:
    memcpy((void*)0x200000c0, "./file0", 8);
    res = syscall(__NR_creat, 0x200000c0, 0);
    if (res != -1)
      r[4] = res;
    break;
  case 11:
    *(uint32_t*)0x20000200 = 5;
    *(uint32_t*)0x20000204 = 8;
    *(uint32_t*)0x20000208 = 0;
    *(uint32_t*)0x2000020c = 0;
    *(uint32_t*)0x20000210 = 0xd;
    *(uint8_t*)0x20000214 = 0;
    *(uint8_t*)0x20000215 = 0;
    *(uint8_t*)0x20000216 = 0;
    *(uint8_t*)0x20000217 = 0;
    *(uint8_t*)0x20000218 = 0;
    *(uint8_t*)0x20000219 = 0;
    *(uint8_t*)0x2000021a = 0;
    *(uint8_t*)0x2000021b = 0;
    *(uint8_t*)0x2000021c = 0;
    *(uint8_t*)0x2000021d = 0;
    *(uint8_t*)0x2000021e = 0;
    *(uint8_t*)0x2000021f = 0;
    *(uint8_t*)0x20000220 = 0;
    *(uint8_t*)0x20000221 = 0;
    *(uint8_t*)0x20000222 = 0;
    *(uint8_t*)0x20000223 = 0;
    *(uint8_t*)0x20000224 = 0;
    *(uint8_t*)0x20000225 = 0;
    *(uint8_t*)0x20000226 = 0;
    *(uint8_t*)0x20000227 = 0;
    *(uint8_t*)0x20000228 = 0;
    *(uint8_t*)0x20000229 = 0;
    *(uint8_t*)0x2000022a = 0;
    *(uint8_t*)0x2000022b = 0;
    *(uint8_t*)0x2000022c = 0;
    *(uint8_t*)0x2000022d = 0;
    *(uint8_t*)0x2000022e = 0;
    *(uint8_t*)0x2000022f = 0;
    *(uint8_t*)0x20000230 = 0;
    *(uint8_t*)0x20000231 = 0;
    *(uint8_t*)0x20000232 = 0;
    *(uint8_t*)0x20000233 = 0;
    *(uint8_t*)0x20000234 = 0;
    *(uint8_t*)0x20000235 = 0;
    *(uint8_t*)0x20000236 = 0;
    *(uint8_t*)0x20000237 = 0;
    *(uint8_t*)0x20000238 = 0;
    *(uint8_t*)0x20000239 = 0;
    *(uint8_t*)0x2000023a = 0;
    *(uint8_t*)0x2000023b = 0;
    *(uint8_t*)0x2000023c = 0;
    *(uint8_t*)0x2000023d = 0;
    *(uint8_t*)0x2000023e = 0;
    *(uint8_t*)0x2000023f = 0;
    *(uint8_t*)0x20000240 = 0;
    *(uint8_t*)0x20000241 = 0;
    *(uint8_t*)0x20000242 = 0;
    *(uint8_t*)0x20000243 = 0;
    *(uint8_t*)0x20000244 = 0;
    *(uint8_t*)0x20000245 = 0;
    *(uint8_t*)0x20000246 = 0;
    *(uint8_t*)0x20000247 = 0;
    *(uint8_t*)0x20000248 = 0;
    *(uint8_t*)0x20000249 = 0;
    *(uint8_t*)0x2000024a = 0;
    *(uint8_t*)0x2000024b = 0;
    *(uint8_t*)0x2000024c = 0;
    *(uint8_t*)0x2000024d = 0;
    *(uint8_t*)0x2000024e = 0;
    *(uint8_t*)0x2000024f = 0;
    syscall(__NR_ioctl, r[3], 0x40505412, 0x20000200);
    break;
  case 12:
    syscall(__NR_ioctl, r[3], 0x80404507, 0x20000600);
    break;
  case 13:
    *(uint32_t*)0x20000280 = 1;
    *(uint32_t*)0x20000284 = 0x80;
    *(uint32_t*)0x20000288 = 0;
    *(uint32_t*)0x2000028c = 0;
    *(uint32_t*)0x20000290 = 0;
    *(uint8_t*)0x20000294 = 0;
    *(uint8_t*)0x20000295 = 0;
    *(uint8_t*)0x20000296 = 0;
    *(uint8_t*)0x20000297 = 0;
    *(uint8_t*)0x20000298 = 0;
    *(uint8_t*)0x20000299 = 0;
    *(uint8_t*)0x2000029a = 0;
    *(uint8_t*)0x2000029b = 0;
    *(uint8_t*)0x2000029c = 0;
    *(uint8_t*)0x2000029d = 0;
    *(uint8_t*)0x2000029e = 0;
    *(uint8_t*)0x2000029f = 0;
    *(uint8_t*)0x200002a0 = 0;
    *(uint8_t*)0x200002a1 = 0;
    *(uint8_t*)0x200002a2 = 0;
    *(uint8_t*)0x200002a3 = 0;
    *(uint8_t*)0x200002a4 = 0;
    *(uint8_t*)0x200002a5 = 0;
    *(uint8_t*)0x200002a6 = 0;
    *(uint8_t*)0x200002a7 = 0;
    *(uint8_t*)0x200002a8 = 0;
    *(uint8_t*)0x200002a9 = 0;
    *(uint8_t*)0x200002aa = 0;
    *(uint8_t*)0x200002ab = 0;
    *(uint8_t*)0x200002ac = 0;
    *(uint8_t*)0x200002ad = 0;
    *(uint8_t*)0x200002ae = 0;
    *(uint8_t*)0x200002af = 0;
    *(uint8_t*)0x200002b0 = 0;
    *(uint8_t*)0x200002b1 = 0;
    *(uint8_t*)0x200002b2 = 0;
    *(uint8_t*)0x200002b3 = 0;
    *(uint8_t*)0x200002b4 = 0;
    *(uint8_t*)0x200002b5 = 0;
    *(uint8_t*)0x200002b6 = 0;
    *(uint8_t*)0x200002b7 = 0;
    *(uint8_t*)0x200002b8 = 0;
    *(uint8_t*)0x200002b9 = 0;
    *(uint8_t*)0x200002ba = 0;
    *(uint8_t*)0x200002bb = 0;
    *(uint8_t*)0x200002bc = 0;
    *(uint8_t*)0x200002bd = 0;
    *(uint8_t*)0x200002be = 0;
    *(uint8_t*)0x200002bf = 0;
    *(uint8_t*)0x200002c0 = 0;
    *(uint8_t*)0x200002c1 = 0;
    *(uint8_t*)0x200002c2 = 0;
    *(uint8_t*)0x200002c3 = 0;
    *(uint8_t*)0x200002c4 = 0;
    *(uint8_t*)0x200002c5 = 0;
    *(uint8_t*)0x200002c6 = 0;
    *(uint8_t*)0x200002c7 = 0;
    *(uint8_t*)0x200002c8 = 0;
    *(uint8_t*)0x200002c9 = 0;
    *(uint8_t*)0x200002ca = 0;
    *(uint8_t*)0x200002cb = 0;
    *(uint8_t*)0x200002cc = 0;
    *(uint8_t*)0x200002cd = 0;
    *(uint8_t*)0x200002ce = 0;
    *(uint8_t*)0x200002cf = 0;
    syscall(__NR_ioctl, r[3], 0x40505412, 0x20000280);
    break;
  case 14:
    memcpy((void*)0x200009c0, "threaded", 9);
    syscall(__NR_write, r[4], 0x200009c0, 0xfffffc47);
    break;
  }
}

void execute_one()
{
  execute(15);
}

int main()
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  char* cwd = get_current_dir_name();
  for (;;) {
    if (chdir(cwd))
      fail("failed to chdir");
    use_temporary_dir();
    do_sandbox_none();
  }
}