// https://syzkaller.appspot.com/bug?id=7f89ee40d35beb6d8f3fc3d122e43287cc3825cd
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <errno.h>
#include <sched.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

#define BITMASK_LEN(type, bf_len) (type)((1ull << (bf_len)) - 1)

#define BITMASK_LEN_OFF(type, bf_off, bf_len)                                  \
  (type)(BITMASK_LEN(type, (bf_len)) << (bf_off))

#define STORE_BY_BITMASK(type, addr, val, bf_off, bf_len)                      \
  if ((bf_off) == 0 && (bf_len) == 0) {                                        \
    *(type*)(addr) = (type)(val);                                              \
  } else {                                                                     \
    type new_val = *(type*)(addr);                                             \
    new_val &= ~BITMASK_LEN_OFF(type, (bf_off), (bf_len));                     \
    new_val |= ((type)(val)&BITMASK_LEN(type, (bf_len))) << (bf_off);          \
    *(type*)(addr) = new_val;                                                  \
  }

static void setup_common()
{
  if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) {
  }
}

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);
  rlim.rlim_cur = rlim.rlim_max = 256;
  setrlimit(RLIMIT_NOFILE, &rlim);
  if (unshare(CLONE_NEWNS)) {
  }
  if (unshare(CLONE_NEWIPC)) {
  }
  if (unshare(0x02000000)) {
  }
  if (unshare(CLONE_NEWUTS)) {
  }
  if (unshare(CLONE_SYSVSEM)) {
  }
}

int wait_for_loop(int pid)
{
  if (pid < 0)
    exit(1);
  int status = 0;
  while (waitpid(-1, &status, __WALL) != pid) {
  }
  return WEXITSTATUS(status);
}

static int do_sandbox_none(void)
{
  if (unshare(CLONE_NEWPID)) {
  }
  int pid = fork();
  if (pid != 0)
    return wait_for_loop(pid);
  setup_common();
  sandbox_common();
  if (unshare(CLONE_NEWNET)) {
  }
  loop();
  exit(1);
}

void loop(void)
{
  memcpy((void*)0x20000000, "./file0", 8);
  syscall(__NR_mkdir, 0x20000000, 0);
  *(uint32_t*)0x2000a000 = 5;
  *(uint32_t*)0x2000a004 = 0x70;
  *(uint8_t*)0x2000a008 = 0;
  *(uint8_t*)0x2000a009 = 0;
  *(uint8_t*)0x2000a00a = 0;
  *(uint8_t*)0x2000a00b = 0;
  *(uint32_t*)0x2000a00c = 0;
  *(uint64_t*)0x2000a010 = 0;
  *(uint64_t*)0x2000a018 = 0;
  *(uint64_t*)0x2000a020 = 0;
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 0, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 1, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 2, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 3, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 4, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 5, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 1, 6, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 7, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 8, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 9, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 10, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 11, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 12, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 13, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 14, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 15, 2);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 17, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 18, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 19, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 20, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 21, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 22, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 23, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 24, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 25, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 26, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 27, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 28, 1);
  STORE_BY_BITMASK(uint64_t, 0x2000a028, 0, 29, 35);
  *(uint32_t*)0x2000a030 = 0;
  *(uint32_t*)0x2000a034 = 0;
  *(uint64_t*)0x2000a038 = 0;
  *(uint64_t*)0x2000a040 = 0;
  *(uint64_t*)0x2000a048 = 0xa000003fe;
  *(uint64_t*)0x2000a050 = 0;
  *(uint32_t*)0x2000a058 = 0xfffffffc;
  *(uint32_t*)0x2000a05c = 0;
  *(uint64_t*)0x2000a060 = 0;
  *(uint32_t*)0x2000a068 = 0;
  *(uint16_t*)0x2000a06c = 0;
  *(uint16_t*)0x2000a06e = 0;
  syscall(__NR_perf_event_open, 0x2000a000, 0, 0, -1, 0);
  memcpy((void*)0x20343ff8, "./file0", 8);
  memcpy((void*)0x2015bffc, "nfs", 4);
  syscall(__NR_mount, 0x20000080, 0x20343ff8, 0x2015bffc, 0, 0x2000a000);
}
int main(void)
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  do_sandbox_none();
  return 0;
}