// https://syzkaller.appspot.com/bug?id=1f0fc473c0dd243a6b72b1b802dde6950fd14c68
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <sched.h>
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

unsigned long long procid;

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
  struct timespec ts;
  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    exit(1);
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

#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 void setup_common()
{
  if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) {
  }
}

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);
  rlim.rlim_cur = rlim.rlim_max = 256;
  setrlimit(RLIMIT_NOFILE, &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)
    exit(1);
  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);
  setup_common();
  sandbox_common();
  if (unshare(CLONE_NEWNET)) {
  }
  loop();
  exit(1);
}

static void kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  int i;
  for (i = 0; i < 100; i++) {
    if (waitpid(-1, status, WNOHANG | __WALL) == pid)
      return;
    usleep(1000);
  }
  DIR* dir = opendir("/sys/fs/fuse/connections");
  if (dir) {
    for (;;) {
      struct dirent* ent = readdir(dir);
      if (!ent)
        break;
      if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
        continue;
      char abort[300];
      snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
               ent->d_name);
      int fd = open(abort, O_WRONLY);
      if (fd == -1) {
        continue;
      }
      if (write(fd, abort, 1) < 0) {
      }
      close(fd);
    }
    closedir(dir);
  } else {
  }
  while (waitpid(-1, status, __WALL) != pid) {
  }
}

#define SYZ_HAVE_SETUP_TEST 1
static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
}

#define SYZ_HAVE_RESET_TEST 1
static void reset_test()
{
  int fd;
  for (fd = 3; fd < 30; fd++)
    close(fd);
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter;
  for (iter = 0;; iter++) {
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      setup_test();
      execute_one();
      reset_test();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      if (current_time_ms() - start < 5 * 1000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_one(void)
{
  long res = 0;
  *(uint32_t*)0x2001d000 = 1;
  *(uint32_t*)0x2001d004 = 0x70;
  *(uint8_t*)0x2001d008 = 0;
  *(uint8_t*)0x2001d009 = 0;
  *(uint8_t*)0x2001d00a = 0;
  *(uint8_t*)0x2001d00b = 0;
  *(uint32_t*)0x2001d00c = 0;
  *(uint64_t*)0x2001d010 = 0x7f;
  *(uint64_t*)0x2001d018 = 0;
  *(uint64_t*)0x2001d020 = 0;
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 0, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 1, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 2, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 3, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 4, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 5, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 6, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 7, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 8, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 9, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 10, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 11, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 12, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0x2000000, 13, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 14, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 15, 2);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 17, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 18, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 19, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 20, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 21, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 22, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 23, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 24, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 25, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 26, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 27, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 28, 1);
  STORE_BY_BITMASK(uint64_t, 0x2001d028, 0, 29, 35);
  *(uint32_t*)0x2001d030 = 0;
  *(uint32_t*)0x2001d034 = 0;
  *(uint64_t*)0x2001d038 = 0x20abe000;
  *(uint64_t*)0x2001d040 = 0;
  *(uint64_t*)0x2001d048 = 0;
  *(uint64_t*)0x2001d050 = 0;
  *(uint32_t*)0x2001d058 = 0;
  *(uint32_t*)0x2001d05c = 0;
  *(uint64_t*)0x2001d060 = 0;
  *(uint32_t*)0x2001d068 = 0;
  *(uint16_t*)0x2001d06c = 0;
  *(uint16_t*)0x2001d06e = 0;
  syscall(__NR_perf_event_open, 0x2001d000, 0, -1, -1, 0);
  res = syscall(__NR_socket, 0x40000000015, 5, 0);
  if (res != -1)
    r[0] = res;
  *(uint16_t*)0x200002c0 = 2;
  *(uint16_t*)0x200002c2 = htobe16(0x4e1c);
  *(uint8_t*)0x200002c4 = 0xac;
  *(uint8_t*)0x200002c5 = 0x14;
  *(uint8_t*)0x200002c6 = 0x14;
  *(uint8_t*)0x200002c7 = 0xbb;
  *(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_bind, r[0], 0x200002c0, 0x10);
  *(uint64_t*)0x20000200 = 0;
  *(uint64_t*)0x20000208 = 0x1c9c380;
  syscall(__NR_mq_timedsend, -1, 0x20000040, 0, 0, 0x20000200);
}
int main(void)
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  for (procid = 0; procid < 8; procid++) {
    if (fork() == 0) {
      do_sandbox_none();
    }
  }
  sleep(1000000);
  return 0;
}