// https://syzkaller.appspot.com/bug?id=e634bd820c7bd376c401dd05f3ba79fe401f44ec
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

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

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;
}

static bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

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();
  write_file("/proc/self/oom_score_adj", "1000");
}

#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;
    }
  }
}
#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif

uint64_t r[2] = {0xffffffffffffffff, 0x0};

void execute_one(void)
{
  long res = 0;
  memcpy((void*)0x20000180,
         "\006\000\000\000^\000\254\330\375\314\356q\345\365\313\2001`"
         "\3448\205\244\365\320\033\\\004\f\370F\\\264\272\215\357\022d\356\245"
         "?\000kZ\213\031h\327|"
         "\024i\r\030U9\301\327\020\360G\022\250\272a\262\224|%n\036+"
         "\237\273\270\254\201\215\223q\324\324z\252Z\017\252\307\227#\345g "
         "l\3255\025\277\374\365\203\2672\000Y\025\222\261\266a\364\351u\262"
         "\347\354iy\b\333\307\361\207\311\a\221\004J\310\016\377|"
         "J\'Nxr\000\274\2535\233\205>"
         "\231\312z2\253KI\334\344\237\245\320\016wm\347\314K\311\213\213E\211"
         "\003\000\000\000}@Ry\2469^\334\235\240\004\337 "
         "\aelO7\361\332\314\242x\302\232\365\030F\240\200M\371,+\311\367/"
         "nt\233a\024\033\030\335\030X\322o\025\227L\346\265\272\307\362W\n\177"
         "\024ZIL:"
         "T\033d\031\215E\234\261\271JK\035o\205\351\242\312\234d\b\310\275iQ_"
         "L\260\271 "
         "\367/"
         "F\374\'M#,\204M\272\251\242yr\'?f\tb\332i\375\214\232oj\204\003i\212|"
         "\367T;=p\242\230f\307\357u="
         "\226\313\021\221\316\316\276v\252\273\312\372\243\336\325\037\327\003"
         ":12\362\375\rN\204=A\256\2333\201\251~"
         "\267\200\321\342\366\362\270\311\212\253C\342\354\270,"
         "j\341\273\033\037@",
         362);
  res = syscall(__NR_memfd_create, 0x20000180, 3);
  if (res != -1)
    r[0] = res;
  res = syscall(__NR_io_setup, 0x40, 0x200000c0);
  if (res != -1)
    r[1] = *(uint64_t*)0x200000c0;
  *(uint64_t*)0x200003c0 = 0x20000140;
  *(uint64_t*)0x20000140 = 0;
  *(uint32_t*)0x20000148 = 0;
  *(uint32_t*)0x2000014c = 0;
  *(uint16_t*)0x20000150 = 5;
  *(uint16_t*)0x20000152 = 0;
  *(uint32_t*)0x20000154 = r[0];
  *(uint64_t*)0x20000158 = 0;
  *(uint64_t*)0x20000160 = 0;
  *(uint64_t*)0x20000168 = 0;
  *(uint64_t*)0x20000170 = 0;
  *(uint32_t*)0x20000178 = 0;
  *(uint32_t*)0x2000017c = -1;
  syscall(__NR_io_submit, r[1], 0x20000258, 0x200003c0);
}
int main(void)
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  loop();
  return 0;
}