// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <errno.h>
#include <fcntl.h>
#include <sched.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdio.h>
#include <string.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/stat.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 <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string.h>
#include <sys/stat.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);
}

#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;                                          \
  }

struct csum_inet {
  uint32_t acc;
};

static void csum_inet_init(struct csum_inet* csum)
{
  csum->acc = 0;
}

static void csum_inet_update(struct csum_inet* csum,
                             const uint8_t* data, size_t length)
{
  if (length == 0)
    return;

  size_t i;
  for (i = 0; i < length - 1; i += 2)
    csum->acc += *(uint16_t*)&data[i];

  if (length & 1)
    csum->acc += (uint16_t)data[length - 1];

  while (csum->acc > 0xffff)
    csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16);
}

static uint16_t csum_inet_digest(struct csum_inet* csum)
{
  return ~csum->acc;
}

static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* uctx)
{
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  if (__atomic_load_n(&skip_segv, __ATOMIC_RELAXED) &&
      (addr < prog_start || addr > prog_end)) {
    _longjmp(segv_env, 1);
  }
  doexit(sig);
  for (;;) {
  }
}

static void install_segv_handler()
{
  struct sigaction sa;

  memset(&sa, 0, sizeof(sa));
  sa.sa_handler = SIG_IGN;
  syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8);
  syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8);

  memset(&sa, 0, sizeof(sa));
  sa.sa_sigaction = segv_handler;
  sa.sa_flags = SA_NODEFER | SA_SIGINFO;
  sigaction(SIGSEGV, &sa, NULL);
  sigaction(SIGBUS, &sa, NULL);
}

#define NONFAILING(...)                                                \
  {                                                                    \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);               \
    if (_setjmp(segv_env) == 0) {                                      \
      __VA_ARGS__;                                                     \
    }                                                                  \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);               \
  }

static void use_temporary_dir()
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    fail("failed to mkdtemp");
  if (chmod(tmpdir, 0777))
    fail("failed to chmod");
  if (chdir(tmpdir))
    fail("failed to chdir");
}

static uintptr_t syz_open_dev(uintptr_t a0, uintptr_t a1, uintptr_t a2)
{
  if (a0 == 0xc || a0 == 0xb) {
    char buf[128];
    sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block",
            (uint8_t)a1, (uint8_t)a2);
    return open(buf, O_RDWR, 0);
  } else {
    char buf[1024];
    char* hash;
    NONFAILING(strncpy(buf, (char*)a0, sizeof(buf)));
    buf[sizeof(buf) - 1] = 0;
    while ((hash = strchr(buf, '#'))) {
      *hash = '0' + (char)(a1 % 10);
      a1 /= 10;
    }
    return open(buf, a2, 0);
  }
}

static uintptr_t syz_open_procfs(uintptr_t a0, uintptr_t a1)
{

  char buf[128];
  memset(buf, 0, sizeof(buf));
  if (a0 == 0) {
    NONFAILING(snprintf(buf, sizeof(buf), "/proc/self/%s", (char*)a1));
  } else if (a0 == (uintptr_t)-1) {
    NONFAILING(
        snprintf(buf, sizeof(buf), "/proc/thread-self/%s", (char*)a1));
  } else {
    NONFAILING(snprintf(buf, sizeof(buf), "/proc/self/task/%d/%s",
                        (int)a0, (char*)a1));
  }
  int fd = open(buf, O_RDWR);
  if (fd == -1)
    fd = open(buf, O_RDONLY);
  return fd;
}

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);
}

static void test();

void loop()
{
  while (1) {
    test();
  }
}

long r[107];
void test()
{
  memset(r, -1, sizeof(r));
  r[0] = syscall(__NR_mmap, 0x20000000ul, 0xfff000ul, 0x3ul, 0x32ul,
                 0xfffffffffffffffful, 0x0ul);
  r[1] = syscall(__NR_ioctl, 0xfffffffffffffffful, 0xae03ul, 0x7ffful);
  NONFAILING(memcpy((void*)0x200e0ff7,
                    "\x2f\x64\x65\x76\x2f\x73\x67\x23\x00", 9));
  r[3] = syz_open_dev(0x200e0ff7ul, 0xfffffffffdfff806ul, 0x8001ul);
  NONFAILING(
      memcpy((void*)0x20be2ff8, "\x6e\x65\x74\x2f\x61\x72\x70\x00", 8));
  r[5] = syz_open_procfs(0x0ul, 0x20be2ff8ul);
  r[6] = syscall(__NR_waitid, 0x1ul, 0x0ul, 0x205caff0ul, 0x8ul,
                 0x20ce4000ul);
  r[7] = syscall(__NR_setresuid, 0x0ul, 0x0ul, 0x0ul);
  NONFAILING(*(uint64_t*)0x203e1000 = (uint64_t)0x200);
  r[9] = syscall(__NR_sendfile, r[3], r[5], 0x203e1000ul, 0x3feul);
  r[10] = syscall(__NR_socket, 0x2ul, 0x1ul, 0x0ul);
  r[11] = syscall(__NR_semget, 0x0ul, 0x4ul, 0x2ul);
  NONFAILING(*(uint32_t*)0x2059bfb9 = (uint32_t)0x0);
  NONFAILING(*(uint32_t*)0x2059bfbd = (uint32_t)0x0);
  NONFAILING(*(uint32_t*)0x20bc5000 = (uint32_t)0x8);
  r[15] = syscall(__NR_getsockopt, 0xfffffffffffffffful, 0x84ul, 0x1aul,
                  0x2059bfb9ul, 0x20bc5000ul);
  NONFAILING(memcpy((void*)0x20893000, "\x75\x73\x65\x72\x00", 5));
  NONFAILING(*(uint8_t*)0x20be6000 = (uint8_t)0x73);
  NONFAILING(*(uint8_t*)0x20be6001 = (uint8_t)0x79);
  NONFAILING(*(uint8_t*)0x20be6002 = (uint8_t)0x7a);
  NONFAILING(*(uint8_t*)0x20be6003 = (uint8_t)0x23);
  NONFAILING(*(uint8_t*)0x20be6004 = (uint8_t)0x0);
  r[22] = syscall(__NR_add_key, 0x20893000ul, 0x20be6000ul,
                  0x20f28000ul, 0x0ul, 0x0ul);
  NONFAILING(*(uint8_t*)0x20004000 = (uint8_t)0xbb);
  NONFAILING(*(uint8_t*)0x20004001 = (uint8_t)0xbb);
  NONFAILING(*(uint8_t*)0x20004002 = (uint8_t)0xbb);
  NONFAILING(*(uint8_t*)0x20004003 = (uint8_t)0xbb);
  NONFAILING(*(uint8_t*)0x20004004 = (uint8_t)0xbb);
  NONFAILING(*(uint8_t*)0x20004005 = (uint8_t)0x0);
  NONFAILING(memcpy((void*)0x20004006, "\xc7\xdf\x9e\x6e\xf6\x78", 6));
  NONFAILING(*(uint16_t*)0x2000400c = (uint16_t)0x6000);
  NONFAILING(*(uint16_t*)0x2000400e = (uint16_t)0x300);
  NONFAILING(*(uint8_t*)0x20004010 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20004011 = (uint8_t)0x7e);
  NONFAILING(memcpy((void*)0x20004012, "\x6f", 1));
  NONFAILING(memcpy((void*)0x2028aff7,
                    "\x2f\x64\x65\x76\x2f\x73\x67\x23\x00", 9));
  r[37] = syz_open_dev(0x2028aff7ul, 0xfffffffffdfff806ul, 0x140ul);
  r[38] = syscall(__NR_geteuid);
  NONFAILING(*(uint32_t*)0x2001d000 = (uint32_t)0x2);
  NONFAILING(*(uint32_t*)0x2001d004 = (uint32_t)0x78);
  NONFAILING(*(uint8_t*)0x2001d008 = (uint8_t)0xe3);
  NONFAILING(*(uint8_t*)0x2001d009 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x2001d00a = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x2001d00b = (uint8_t)0x0);
  NONFAILING(*(uint32_t*)0x2001d00c = (uint32_t)0x0);
  NONFAILING(*(uint64_t*)0x2001d010 = (uint64_t)0x0);
  NONFAILING(*(uint64_t*)0x2001d018 = (uint64_t)0x0);
  NONFAILING(*(uint64_t*)0x2001d020 = (uint64_t)0x0);
  NONFAILING(*(uint8_t*)0x2001d028 = (uint8_t)0x80000040fe);
  NONFAILING(*(uint8_t*)0x2001d029 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x2001d02a = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x2001d02b = (uint8_t)0x0);
  NONFAILING(*(uint32_t*)0x2001d02c = (uint32_t)0x0);
  NONFAILING(*(uint32_t*)0x2001d030 = (uint32_t)0x0);
  NONFAILING(*(uint32_t*)0x2001d034 = (uint32_t)0x0);
  NONFAILING(*(uint64_t*)0x2001d038 = (uint64_t)0x0);
  NONFAILING(*(uint64_t*)0x2001d040 = (uint64_t)0x0);
  NONFAILING(*(uint64_t*)0x2001d048 = (uint64_t)0x0);
  NONFAILING(*(uint64_t*)0x2001d050 = (uint64_t)0x0);
  NONFAILING(*(uint64_t*)0x2001d058 = (uint64_t)0x0);
  NONFAILING(*(uint32_t*)0x2001d060 = (uint32_t)0x0);
  NONFAILING(*(uint64_t*)0x2001d068 = (uint64_t)0x0);
  NONFAILING(*(uint32_t*)0x2001d070 = (uint32_t)0x0);
  NONFAILING(*(uint16_t*)0x2001d074 = (uint16_t)0x0);
  NONFAILING(*(uint16_t*)0x2001d076 = (uint16_t)0x0);
  r[66] = syscall(__NR_perf_event_open, 0x2001d000ul, 0x0ul,
                  0xfffffffffffffffful, 0xfffffffffffffffful, 0x0ul);
  NONFAILING(*(uint8_t*)0x20fd5fae = (uint8_t)0xaa);
  NONFAILING(*(uint8_t*)0x20fd5faf = (uint8_t)0xaa);
  NONFAILING(*(uint8_t*)0x20fd5fb0 = (uint8_t)0xaa);
  NONFAILING(*(uint8_t*)0x20fd5fb1 = (uint8_t)0xaa);
  NONFAILING(*(uint8_t*)0x20fd5fb2 = (uint8_t)0xaa);
  NONFAILING(*(uint8_t*)0x20fd5fb3 = (uint8_t)0x0);
  NONFAILING(memcpy((void*)0x20fd5fb4, "\x85\xe0\xe6\xf7\x35\x43", 6));
  NONFAILING(*(uint16_t*)0x20fd5fba = (uint16_t)0x8);
  NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20fd5fbc, 0x8, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20fd5fbc, 0x4, 4, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20fd5fbd, 0x0, 0, 2));
  NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20fd5fbd, 0x0, 2, 6));
  NONFAILING(*(uint16_t*)0x20fd5fbe = (uint16_t)0x2800);
  NONFAILING(*(uint16_t*)0x20fd5fc0 = (uint16_t)0x6400);
  NONFAILING(*(uint16_t*)0x20fd5fc2 = (uint16_t)0x0);
  NONFAILING(*(uint8_t*)0x20fd5fc4 = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20fd5fc5 = (uint8_t)0x0);
  NONFAILING(*(uint16_t*)0x20fd5fc6 = (uint16_t)0x0);
  NONFAILING(*(uint8_t*)0x20fd5fc8 = (uint8_t)0xac);
  NONFAILING(*(uint8_t*)0x20fd5fc9 = (uint8_t)0x14);
  NONFAILING(*(uint8_t*)0x20fd5fca = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20fd5fcb = (uint8_t)0xbb);
  NONFAILING(*(uint8_t*)0x20fd5fcc = (uint8_t)0xac);
  NONFAILING(*(uint8_t*)0x20fd5fcd = (uint8_t)0x14);
  NONFAILING(*(uint8_t*)0x20fd5fce = (uint8_t)0x0);
  NONFAILING(*(uint8_t*)0x20fd5fcf = (uint8_t)0xbb);
  NONFAILING(*(uint8_t*)0x20fd5fd0 = (uint8_t)0x89);
  NONFAILING(*(uint8_t*)0x20fd5fd1 = (uint8_t)0x7);
  NONFAILING(*(uint8_t*)0x20fd5fd2 = (uint8_t)0xfffffffffffffff7);
  NONFAILING(*(uint32_t*)0x20fd5fd3 = (uint32_t)0xffffffff);
  NONFAILING(*(uint8_t*)0x20fd5fd7 = (uint8_t)0x86);
  NONFAILING(*(uint8_t*)0x20fd5fd8 = (uint8_t)0x2);
  NONFAILING(*(uint8_t*)0x20fd5fdc = (uint8_t)0x10);
  NONFAILING(*(uint8_t*)0x20fd5fdd = (uint8_t)0x0);
  NONFAILING(*(uint16_t*)0x20fd5fde = (uint16_t)0x0);
  NONFAILING(*(uint16_t*)0x20fd5fe0 = (uint16_t)0x8);
  NONFAILING(*(uint16_t*)0x20fd5fe2 = (uint16_t)0xffff);
  struct csum_inet csum_104;
  csum_inet_init(&csum_104);
  NONFAILING(
      csum_inet_update(&csum_104, (const uint8_t*)0x20fd5fdc, 8));
  NONFAILING(*(uint16_t*)0x20fd5fde = csum_inet_digest(&csum_104));
  struct csum_inet csum_105;
  csum_inet_init(&csum_105);
  NONFAILING(
      csum_inet_update(&csum_105, (const uint8_t*)0x20fd5fbc, 32));
  NONFAILING(*(uint16_t*)0x20fd5fc6 = csum_inet_digest(&csum_105));
}

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