// https://syzkaller.appspot.com/bug?id=2a622455acd7051c6cf85c360cd116118a587726
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <endian.h>
#include <errno.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <sys/prctl.h>
#include <sys/syscall.h>
#include <sys/time.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 <string.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 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 execute_one();
extern unsigned long long procid;

static void loop()
{
  int iter;
  for (iter = 0;; iter++) {
    int pid = fork();
    if (pid < 0)
      fail("clone failed");
    if (pid == 0) {
      prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
      setpgrp();
      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;
    }
  }
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};
void execute_one()
{
  long res = 0;
  res = syscall(__NR_socket, 1, 2, 0);
  if (res != -1)
    r[0] = res;
  *(uint16_t*)0x20000240 = 1;
  *(uint8_t*)0x20000242 = 0;
  *(uint32_t*)0x20000244 = 0;
  syscall(__NR_bind, r[0], 0x20000240, 0x6e);
  *(uint16_t*)0x20000000 = 1;
  memcpy((void*)0x20000002,
         "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
         "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
         "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
         "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
         "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
         "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
         "\x00\x00\x00\x00\x00\x00",
         108);
  syscall(__NR_connect, r[0], 0x20000000, 0x6e);
  memcpy((void*)0x20000100, "./file0", 8);
  res = syscall(__NR_open, 0x20000100, 0x40, 0);
  if (res != -1)
    r[1] = res;
  memcpy((void*)0x20000080, "./file0", 8);
  memcpy((void*)0x200000c0, "9p", 3);
  memcpy((void*)0x20000380, "trans=fd,", 9);
  memcpy((void*)0x20000389, "rfdno", 5);
  *(uint8_t*)0x2000038e = 0x3d;
  sprintf((char*)0x2000038f, "0x%016llx", (long long)r[1]);
  *(uint8_t*)0x200003a1 = 0x2c;
  memcpy((void*)0x200003a2, "wfdno", 5);
  *(uint8_t*)0x200003a7 = 0x3d;
  sprintf((char*)0x200003a8, "0x%016llx", (long long)r[0]);
  *(uint8_t*)0x200003ba = 0x2c;
  *(uint8_t*)0x200003bb = 0;
  syscall(__NR_mount, 0, 0x20000080, 0x200000c0, 0, 0x20000380);
}

int main()
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  for (;;) {
    loop();
  }
}