// https://syzkaller.appspot.com/bug?id=de316389db0fa0cd7ced6e564601ea8e56625ebc
// autogenerated by syzkaller (http://github.com/google/syzkaller)

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

static int do_sandbox_none(void)
{
  if (unshare(CLONE_NEWPID)) {
  }
  int pid = fork();
  if (pid < 0)
    fail("sandbox fork failed");
  if (pid)
    return pid;

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

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 (running)
          usleep((call == num_calls - 1) ? 10000 : 1000);
        break;
      }
    }
  }
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};
void execute_call(int call)
{
  long res;
  switch (call) {
  case 0:
    *(uint64_t*)0x20000040 = 0x44;
    *(uint64_t*)0x20000048 = 0;
    *(uint64_t*)0x20000050 = 0x20000080;
    *(uint32_t*)0x20000080 = 0x40406300;
    *(uint32_t*)0x20000084 = 0;
    *(uint32_t*)0x20000088 = 0;
    *(uint64_t*)0x2000008c = 0;
    *(uint32_t*)0x20000094 = 0;
    *(uint32_t*)0x20000098 = 0;
    *(uint32_t*)0x2000009c = 0;
    *(uint32_t*)0x200000a0 = 0;
    *(uint64_t*)0x200000a4 = 0x18;
    *(uint64_t*)0x200000ac = 8;
    *(uint64_t*)0x200000b4 = 0x20000140;
    *(uint32_t*)0x20000140 = 0x66642a85;
    *(uint32_t*)0x20000144 = 0;
    *(uint32_t*)0x20000148 = -1;
    *(uint32_t*)0x2000014c = 0;
    *(uint64_t*)0x20000150 = 0;
    *(uint64_t*)0x200000bc = 0x200001c0;
    *(uint64_t*)0x200001c0 = 0;
    *(uint64_t*)0x20000058 = 0;
    *(uint64_t*)0x20000060 = 0;
    *(uint64_t*)0x20000068 = 0x20000300;
    syscall(__NR_ioctl, -1, 0xc0306201, 0x20000040);
    break;
  case 1:
    res = syscall(__NR_socket, 2, 2, 0);
    if (res != -1)
      r[0] = res;
    break;
  case 2:
    res = syscall(__NR_socket, 0x18, 1, 1);
    if (res != -1)
      r[1] = res;
    break;
  case 3:
    *(uint16_t*)0x20e92000 = 0x18;
    *(uint32_t*)0x20e92002 = 1;
    *(uint32_t*)0x20e92006 = 0;
    *(uint32_t*)0x20e9200a = r[0];
    *(uint16_t*)0x20e9200e = 2;
    *(uint16_t*)0x20e92010 = htobe16(1);
    *(uint8_t*)0x20e92012 = 0xac;
    *(uint8_t*)0x20e92013 = 0x14;
    *(uint8_t*)0x20e92014 = 0;
    *(uint8_t*)0x20e92015 = 0xbb;
    *(uint8_t*)0x20e92016 = 0;
    *(uint8_t*)0x20e92017 = 0;
    *(uint8_t*)0x20e92018 = 0;
    *(uint8_t*)0x20e92019 = 0;
    *(uint8_t*)0x20e9201a = 0;
    *(uint8_t*)0x20e9201b = 0;
    *(uint8_t*)0x20e9201c = 0;
    *(uint8_t*)0x20e9201d = 0;
    *(uint32_t*)0x20e9201e = 2;
    *(uint32_t*)0x20e92022 = 0;
    *(uint32_t*)0x20e92026 = 4;
    *(uint32_t*)0x20e9202a = 0;
    syscall(__NR_connect, r[1], 0x20e92000, 0x2e);
    break;
  case 4:
    syscall(__NR_close, r[0]);
    break;
  case 5:
    syscall(__NR_close, r[1]);
    break;
  }
}

void loop()
{
  execute(6);
}

int main()
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  int pid = do_sandbox_none();
  int status = 0;
  while (waitpid(pid, &status, __WALL) != pid) {
  }
  return 0;
}