// https://syzkaller.appspot.com/bug?id=2997ce21361877acf4ac2cb73a277f992f0c8264
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#ifndef __NR_bpf
#define __NR_bpf 321
#endif

#define _GNU_SOURCE

#include <errno.h>
#include <sched.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.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++) {
  }
}

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);

  unshare(CLONE_NEWNS);
  unshare(CLONE_NEWIPC);
  unshare(CLONE_IO);
}

static int do_sandbox_none(int executor_pid, bool enable_tun)
{
  int pid = fork();
  if (pid)
    return pid;

  sandbox_common();

  loop();
  doexit(1);
}

long r[24];
void loop()
{
  memset(r, -1, sizeof(r));
  r[0] = syscall(__NR_mmap, 0x20000000ul, 0xfff000ul, 0x3ul, 0x32ul,
                 0xfffffffffffffffful, 0x0ul);
  *(uint32_t*)0x20b4cfd0 = (uint32_t)0x1;
  *(uint32_t*)0x20b4cfd4 = (uint32_t)0x2;
  *(uint64_t*)0x20b4cfd8 = (uint64_t)0x20ef3000;
  *(uint64_t*)0x20b4cfe0 = (uint64_t)0x20b4d000;
  *(uint32_t*)0x20b4cfe8 = (uint32_t)0x1;
  *(uint32_t*)0x20b4cfec = (uint32_t)0x80;
  *(uint64_t*)0x20b4cff0 = (uint64_t)0x2000a000;
  *(uint32_t*)0x20b4cff8 = (uint32_t)0x0;
  *(uint8_t*)0x20ef3000 = (uint8_t)0x8db7;
  *(uint8_t*)0x20ef3001 = (uint8_t)0x0;
  *(uint16_t*)0x20ef3002 = (uint16_t)0x0;
  *(uint32_t*)0x20ef3004 = (uint32_t)0x10001;
  *(uint8_t*)0x20ef3008 = (uint8_t)0xd395;
  *(uint8_t*)0x20ef3009 = (uint8_t)0x0;
  *(uint16_t*)0x20ef300a = (uint16_t)0x0;
  *(uint32_t*)0x20ef300c = (uint32_t)0x0;
  memcpy((void*)0x20b4d000, "\x73\x79\x73\x65\x4f\x00", 6);
  r[18] = syscall(__NR_bpf, 0x5ul, 0x20b4cfd0ul, 0x30ul);
  r[19] = syscall(__NR_socket, 0x29ul, 0x5ul, 0x0ul);
  r[20] = syscall(__NR_socket, 0x2ul, 0x6ul, 0x0ul);
  *(uint32_t*)0x20ef4000 = r[20];
  *(uint32_t*)0x20ef4004 = r[18];
  r[23] = syscall(__NR_ioctl, r[19], 0x89e0ul, 0x20ef4000ul);
}

int main()
{
  int pid = do_sandbox_none(0, false);
  int status = 0;
  while (waitpid(pid, &status, __WALL) != pid) {
  }
  return 0;
}