// https://syzkaller.appspot.com/bug?id=e2dc9aea0465d1eea101bb24cb463e2a7efe7d17
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <errno.h>
#include <errno.h>
#include <sched.h>
#include <signal.h>
#include <signal.h>
#include <stdarg.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdio.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 <stdint.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 loop();

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

  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = 128 << 20;
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 8 << 20;
  setrlimit(RLIMIT_MEMLOCK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 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);

#define CLONE_NEWCGROUP 0x02000000

  unshare(CLONE_NEWNS);
  unshare(CLONE_NEWIPC);
  unshare(CLONE_NEWCGROUP);
  unshare(CLONE_NEWNET);
  unshare(CLONE_NEWUTS);
  unshare(CLONE_SYSVSEM);
}

static int do_sandbox_none(int executor_pid, bool enable_tun)
{
  unshare(CLONE_NEWPID);
  int pid = fork();
  if (pid < 0)
    fail("sandbox fork failed");
  if (pid)
    return pid;

  sandbox_common();

  loop();
  doexit(1);
}

static void test();

void loop()
{
  int iter;
  for (iter = 0;; iter++) {
    int pid = fork();
    if (pid < 0)
      fail("loop fork failed");
    if (pid == 0) {
      prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
      setpgrp();
      test();
      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) {
        kill(-pid, SIGKILL);
        kill(pid, SIGKILL);
        while (waitpid(-1, &status, __WALL) != pid) {
        }
        break;
      }
    }
  }
}

long r[2];
uint64_t procid;
void test()
{
  memset(r, -1, sizeof(r));
  syscall(__NR_mmap, 0x20000000, 0xfff000, 0x3, 0x32, 0xffffffff, 0x0);
  r[0] = syscall(__NR_socket, 0x26, 0x5, 0x0);
  *(uint16_t*)0x20f74000 = 0x26;
  memcpy((void*)0x20f74002,
         "\x73\x6b\x63\x69\x70\x68\x65\x72\x00\x00\x00\x00\x00\x00",
         14);
  *(uint32_t*)0x20f74010 = 0x0;
  *(uint32_t*)0x20f74014 = 0x0;
  memcpy((void*)0x20f74018,
         "\x6c\x72\x77\x28\x74\x77\x6f\x66\x69\x73\x68\x29\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",
         64);
  syscall(__NR_bind, r[0], 0x20f74000, 0x58);
  memcpy((void*)0x20a5b000, "\xb7\x0a\x75\xb0\xd5\xe3\x83\xe5\xb3\xb6"
                            "\x0c\xed\x5c\x54\xdb\x0a\x29\x5d\xf0\xdf"
                            "\x82\x17\xad\x40\x00\x00\x00\x00\x00\x00"
                            "\x00\xe6",
         32);
  syscall(__NR_setsockopt, r[0], 0x117, 0x1, 0x20a5b000, 0x20);
  r[1] = syscall(__NR_accept, r[0], 0x0, 0x0);
  memcpy((void*)0x2059aeed, "\x03\x78\x9f\x23\x46\xf5\xa6\x37\x45\x7f"
                            "\x99\x9b\x2d\xa8\x15\xc5\xe2\x3c\x5c\xc5"
                            "\xdf\x21\x4c\x7a\x32\x0e\xd0\x6e\x52\x34"
                            "\xcf\x97\x23\x41\xca\x38\x5e\x82\x9c\x98"
                            "\x01\x44\xc9\x0f\x6e\x4a\x89\x04",
         48);
  syscall(__NR_write, r[1], 0x2059aeed, 0x30);
  *(uint64_t*)0x206e3000 = 0x20f76000;
  *(uint32_t*)0x206e3008 = 0x80;
  *(uint64_t*)0x206e3010 = 0x20f7ffd0;
  *(uint64_t*)0x206e3018 = 0x1;
  *(uint64_t*)0x206e3020 = 0x20f76f1d;
  *(uint64_t*)0x206e3028 = 0x0;
  *(uint32_t*)0x206e3030 = 0x0;
  *(uint64_t*)0x20f7ffd0 = 0x20295000;
  *(uint64_t*)0x20f7ffd8 = 0x1000;
  syscall(__NR_recvmsg, r[1], 0x206e3000, 0x0);
}

int main()
{
  int i;
  for (i = 0; i < 8; i++) {
    if (fork() == 0) {
      procid = i;
      int pid = do_sandbox_none(i, false);
      int status = 0;
      while (waitpid(pid, &status, __WALL) != pid) {
      }
      return 0;
    }
  }
  sleep(1000000);
  return 0;
}