// https://syzkaller.appspot.com/bug?id=6ff79a13ea188e28f1d76ce8093f6b3c24530a0a
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <sched.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/swap.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#include <linux/capability.h>
#include <linux/falloc.h>
#include <linux/loop.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif

static unsigned long long procid;

static __thread int clone_ongoing;
static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
  if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) {
    exit(sig);
  }
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0;
  int valid = addr < prog_start || addr > prog_end;
  if (skip && valid) {
    _longjmp(segv_env, 1);
  }
  exit(sig);
}

static void install_segv_handler(void)
{
  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(...)                                                        \
  ({                                                                           \
    int ok = 1;                                                                \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    if (_setjmp(segv_env) == 0) {                                              \
      __VA_ARGS__;                                                             \
    } else                                                                     \
      ok = 0;                                                                  \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    ok;                                                                        \
  })

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
  struct timespec ts;
  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    exit(1);
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

static int runcmdline(char* cmdline)
{
  int ret = system(cmdline);
  if (ret) {
  }
  return ret;
}

#define MAX_FDS 30

//% This code is derived from puff.{c,h}, found in the zlib development. The
//% original files come with the following copyright notice:

//% Copyright (C) 2002-2013 Mark Adler, all rights reserved
//% version 2.3, 21 Jan 2013
//% This software is provided 'as-is', without any express or implied
//% warranty.  In no event will the author be held liable for any damages
//% arising from the use of this software.
//% Permission is granted to anyone to use this software for any purpose,
//% including commercial applications, and to alter it and redistribute it
//% freely, subject to the following restrictions:
//% 1. The origin of this software must not be misrepresented; you must not
//%    claim that you wrote the original software. If you use this software
//%    in a product, an acknowledgment in the product documentation would be
//%    appreciated but is not required.
//% 2. Altered source versions must be plainly marked as such, and must not be
//%    misrepresented as being the original software.
//% 3. This notice may not be removed or altered from any source distribution.
//% Mark Adler    madler@alumni.caltech.edu

//% BEGIN CODE DERIVED FROM puff.{c,h}

#define MAXBITS 15
#define MAXLCODES 286
#define MAXDCODES 30
#define MAXCODES (MAXLCODES + MAXDCODES)
#define FIXLCODES 288

struct puff_state {
  unsigned char* out;
  unsigned long outlen;
  unsigned long outcnt;
  const unsigned char* in;
  unsigned long inlen;
  unsigned long incnt;
  int bitbuf;
  int bitcnt;
  jmp_buf env;
};
static int puff_bits(struct puff_state* s, int need)
{
  long val = s->bitbuf;
  while (s->bitcnt < need) {
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    val |= (long)(s->in[s->incnt++]) << s->bitcnt;
    s->bitcnt += 8;
  }
  s->bitbuf = (int)(val >> need);
  s->bitcnt -= need;
  return (int)(val & ((1L << need) - 1));
}
static int puff_stored(struct puff_state* s)
{
  s->bitbuf = 0;
  s->bitcnt = 0;
  if (s->incnt + 4 > s->inlen)
    return 2;
  unsigned len = s->in[s->incnt++];
  len |= s->in[s->incnt++] << 8;
  if (s->in[s->incnt++] != (~len & 0xff) ||
      s->in[s->incnt++] != ((~len >> 8) & 0xff))
    return -2;
  if (s->incnt + len > s->inlen)
    return 2;
  if (s->outcnt + len > s->outlen)
    return 1;
  for (; len--; s->outcnt++, s->incnt++) {
    if (s->in[s->incnt])
      s->out[s->outcnt] = s->in[s->incnt];
  }
  return 0;
}
struct puff_huffman {
  short* count;
  short* symbol;
};
static int puff_decode(struct puff_state* s, const struct puff_huffman* h)
{
  int first = 0;
  int index = 0;
  int bitbuf = s->bitbuf;
  int left = s->bitcnt;
  int code = first = index = 0;
  int len = 1;
  short* next = h->count + 1;
  while (1) {
    while (left--) {
      code |= bitbuf & 1;
      bitbuf >>= 1;
      int count = *next++;
      if (code - count < first) {
        s->bitbuf = bitbuf;
        s->bitcnt = (s->bitcnt - len) & 7;
        return h->symbol[index + (code - first)];
      }
      index += count;
      first += count;
      first <<= 1;
      code <<= 1;
      len++;
    }
    left = (MAXBITS + 1) - len;
    if (left == 0)
      break;
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    bitbuf = s->in[s->incnt++];
    if (left > 8)
      left = 8;
  }
  return -10;
}
static int puff_construct(struct puff_huffman* h, const short* length, int n)
{
  int len;
  for (len = 0; len <= MAXBITS; len++)
    h->count[len] = 0;
  int symbol;
  for (symbol = 0; symbol < n; symbol++)
    (h->count[length[symbol]])++;
  if (h->count[0] == n)
    return 0;
  int left = 1;
  for (len = 1; len <= MAXBITS; len++) {
    left <<= 1;
    left -= h->count[len];
    if (left < 0)
      return left;
  }
  short offs[MAXBITS + 1];
  offs[1] = 0;
  for (len = 1; len < MAXBITS; len++)
    offs[len + 1] = offs[len] + h->count[len];
  for (symbol = 0; symbol < n; symbol++)
    if (length[symbol] != 0)
      h->symbol[offs[length[symbol]]++] = symbol;
  return left;
}
static int puff_codes(struct puff_state* s, const struct puff_huffman* lencode,
                      const struct puff_huffman* distcode)
{
  static const short lens[29] = {3,  4,  5,  6,   7,   8,   9,   10,  11, 13,
                                 15, 17, 19, 23,  27,  31,  35,  43,  51, 59,
                                 67, 83, 99, 115, 131, 163, 195, 227, 258};
  static const short lext[29] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2,
                                 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0};
  static const short dists[30] = {
      1,    2,    3,    4,    5,    7,    9,    13,    17,    25,
      33,   49,   65,   97,   129,  193,  257,  385,   513,   769,
      1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577};
  static const short dext[30] = {0, 0, 0,  0,  1,  1,  2,  2,  3,  3,
                                 4, 4, 5,  5,  6,  6,  7,  7,  8,  8,
                                 9, 9, 10, 10, 11, 11, 12, 12, 13, 13};
  int symbol;
  do {
    symbol = puff_decode(s, lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 256) {
      if (s->outcnt == s->outlen)
        return 1;
      if (symbol)
        s->out[s->outcnt] = symbol;
      s->outcnt++;
    } else if (symbol > 256) {
      symbol -= 257;
      if (symbol >= 29)
        return -10;
      int len = lens[symbol] + puff_bits(s, lext[symbol]);
      symbol = puff_decode(s, distcode);
      if (symbol < 0)
        return symbol;
      unsigned dist = dists[symbol] + puff_bits(s, dext[symbol]);
      if (dist > s->outcnt)
        return -11;
      if (s->outcnt + len > s->outlen)
        return 1;
      while (len--) {
        if (dist <= s->outcnt && s->out[s->outcnt - dist])
          s->out[s->outcnt] = s->out[s->outcnt - dist];
        s->outcnt++;
      }
    }
  } while (symbol != 256);
  return 0;
}
static int puff_fixed(struct puff_state* s)
{
  static int virgin = 1;
  static short lencnt[MAXBITS + 1], lensym[FIXLCODES];
  static short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  static struct puff_huffman lencode, distcode;
  if (virgin) {
    lencode.count = lencnt;
    lencode.symbol = lensym;
    distcode.count = distcnt;
    distcode.symbol = distsym;
    short lengths[FIXLCODES];
    int symbol;
    for (symbol = 0; symbol < 144; symbol++)
      lengths[symbol] = 8;
    for (; symbol < 256; symbol++)
      lengths[symbol] = 9;
    for (; symbol < 280; symbol++)
      lengths[symbol] = 7;
    for (; symbol < FIXLCODES; symbol++)
      lengths[symbol] = 8;
    puff_construct(&lencode, lengths, FIXLCODES);
    for (symbol = 0; symbol < MAXDCODES; symbol++)
      lengths[symbol] = 5;
    puff_construct(&distcode, lengths, MAXDCODES);
    virgin = 0;
  }
  return puff_codes(s, &lencode, &distcode);
}
static int puff_dynamic(struct puff_state* s)
{
  static const short order[19] = {16, 17, 18, 0, 8,  7, 9,  6, 10, 5,
                                  11, 4,  12, 3, 13, 2, 14, 1, 15};
  int nlen = puff_bits(s, 5) + 257;
  int ndist = puff_bits(s, 5) + 1;
  int ncode = puff_bits(s, 4) + 4;
  if (nlen > MAXLCODES || ndist > MAXDCODES)
    return -3;
  short lengths[MAXCODES];
  int index;
  for (index = 0; index < ncode; index++)
    lengths[order[index]] = puff_bits(s, 3);
  for (; index < 19; index++)
    lengths[order[index]] = 0;
  short lencnt[MAXBITS + 1], lensym[MAXLCODES];
  struct puff_huffman lencode = {lencnt, lensym};
  int err = puff_construct(&lencode, lengths, 19);
  if (err != 0)
    return -4;
  index = 0;
  while (index < nlen + ndist) {
    int symbol;
    int len;
    symbol = puff_decode(s, &lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 16)
      lengths[index++] = symbol;
    else {
      len = 0;
      if (symbol == 16) {
        if (index == 0)
          return -5;
        len = lengths[index - 1];
        symbol = 3 + puff_bits(s, 2);
      } else if (symbol == 17)
        symbol = 3 + puff_bits(s, 3);
      else
        symbol = 11 + puff_bits(s, 7);
      if (index + symbol > nlen + ndist)
        return -6;
      while (symbol--)
        lengths[index++] = len;
    }
  }
  if (lengths[256] == 0)
    return -9;
  err = puff_construct(&lencode, lengths, nlen);
  if (err && (err < 0 || nlen != lencode.count[0] + lencode.count[1]))
    return -7;
  short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  struct puff_huffman distcode = {distcnt, distsym};
  err = puff_construct(&distcode, lengths + nlen, ndist);
  if (err && (err < 0 || ndist != distcode.count[0] + distcode.count[1]))
    return -8;
  return puff_codes(s, &lencode, &distcode);
}
static int puff(unsigned char* dest, unsigned long* destlen,
                const unsigned char* source, unsigned long sourcelen)
{
  struct puff_state s = {
      .out = dest,
      .outlen = *destlen,
      .outcnt = 0,
      .in = source,
      .inlen = sourcelen,
      .incnt = 0,
      .bitbuf = 0,
      .bitcnt = 0,
  };
  int err;
  if (setjmp(s.env) != 0)
    err = 2;
  else {
    int last;
    do {
      last = puff_bits(&s, 1);
      int type = puff_bits(&s, 2);
      err = type == 0 ? puff_stored(&s)
                      : (type == 1 ? puff_fixed(&s)
                                   : (type == 2 ? puff_dynamic(&s) : -1));
      if (err != 0)
        break;
    } while (!last);
  }
  *destlen = s.outcnt;
  return err;
}

//% END CODE DERIVED FROM puff.{c,h}

#define ZLIB_HEADER_WIDTH 2

static int puff_zlib_to_file(const unsigned char* source,
                             unsigned long sourcelen, int dest_fd)
{
  if (sourcelen < ZLIB_HEADER_WIDTH)
    return 0;
  source += ZLIB_HEADER_WIDTH;
  sourcelen -= ZLIB_HEADER_WIDTH;
  const unsigned long max_destlen = 132 << 20;
  void* ret = mmap(0, max_destlen, PROT_WRITE | PROT_READ,
                   MAP_PRIVATE | MAP_ANON, -1, 0);
  if (ret == MAP_FAILED)
    return -1;
  unsigned char* dest = (unsigned char*)ret;
  unsigned long destlen = max_destlen;
  int err = puff(dest, &destlen, source, sourcelen);
  if (err) {
    munmap(dest, max_destlen);
    errno = -err;
    return -1;
  }
  if (write(dest_fd, dest, destlen) != (ssize_t)destlen) {
    munmap(dest, max_destlen);
    return -1;
  }
  return munmap(dest, max_destlen);
}

static int setup_loop_device(unsigned char* data, unsigned long size,
                             const char* loopname, int* loopfd_p)
{
  int err = 0, loopfd = -1;
  int memfd = syscall(__NR_memfd_create, "syzkaller", 0);
  if (memfd == -1) {
    err = errno;
    goto error;
  }
  if (puff_zlib_to_file(data, size, memfd)) {
    err = errno;
    goto error_close_memfd;
  }
  loopfd = open(loopname, O_RDWR);
  if (loopfd == -1) {
    err = errno;
    goto error_close_memfd;
  }
  if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
    if (errno != EBUSY) {
      err = errno;
      goto error_close_loop;
    }
    ioctl(loopfd, LOOP_CLR_FD, 0);
    usleep(1000);
    if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
      err = errno;
      goto error_close_loop;
    }
  }
  close(memfd);
  *loopfd_p = loopfd;
  return 0;

error_close_loop:
  close(loopfd);
error_close_memfd:
  close(memfd);
error:
  errno = err;
  return -1;
}

static void reset_loop_device(const char* loopname)
{
  int loopfd = open(loopname, O_RDONLY);
  if (loopfd == -1) {
    return;
  }
  if (ioctl(loopfd, LOOP_CLR_FD, 0)) {
  }
  close(loopfd);
}

static long syz_mount_image(volatile long fsarg, volatile long dir,
                            volatile long flags, volatile long optsarg,
                            volatile long change_dir,
                            volatile unsigned long size, volatile long image)
{
  unsigned char* data = (unsigned char*)image;
  int res = -1, err = 0, need_loop_device = !!size;
  char* mount_opts = (char*)optsarg;
  char* target = (char*)dir;
  char* fs = (char*)fsarg;
  char* source = NULL;
  char loopname[64];
  if (need_loop_device) {
    int loopfd;
    memset(loopname, 0, sizeof(loopname));
    snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid);
    if (setup_loop_device(data, size, loopname, &loopfd) == -1)
      return -1;
    close(loopfd);
    source = loopname;
  }
  mkdir(target, 0777);
  char opts[256];
  memset(opts, 0, sizeof(opts));
  if (strlen(mount_opts) > (sizeof(opts) - 32)) {
  }
  strncpy(opts, mount_opts, sizeof(opts) - 32);
  if (strcmp(fs, "iso9660") == 0) {
    flags |= MS_RDONLY;
  } else if (strncmp(fs, "ext", 3) == 0) {
    bool has_remount_ro = false;
    char* remount_ro_start = strstr(opts, "errors=remount-ro");
    if (remount_ro_start != NULL) {
      char after = *(remount_ro_start + strlen("errors=remount-ro"));
      char before = remount_ro_start == opts ? '\0' : *(remount_ro_start - 1);
      has_remount_ro = ((before == '\0' || before == ',') &&
                        (after == '\0' || after == ','));
    }
    if (strstr(opts, "errors=panic") || !has_remount_ro)
      strcat(opts, ",errors=continue");
  } else if (strcmp(fs, "xfs") == 0) {
    strcat(opts, ",nouuid");
  } else if (strncmp(fs, "gfs2", 4) == 0 &&
             (strstr(opts, "errors=panic") || strstr(opts, "debug"))) {
    strcat(opts, ",errors=withdraw");
  }
  res = mount(source, target, fs, flags, opts);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  res = open(target, O_RDONLY | O_DIRECTORY);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  if (change_dir) {
    if (chdir(target) == -1) {
      err = errno;
      close(res);
      res = -1;
    }
  }

error_clear_loop:
  if (need_loop_device)
    reset_loop_device(loopname);
  errno = err;
  return res;
}

static void setup_gadgetfs();
static void setup_binderfs();
static void setup_fusectl();
static void sandbox_common_mount_tmpfs(void)
{
  write_file("/proc/sys/fs/mount-max", "100000");
  if (mkdir("./syz-tmp", 0777))
    exit(1);
  if (mount("", "./syz-tmp", "tmpfs", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot", 0777))
    exit(1);
  if (mkdir("./syz-tmp/newroot/dev", 0700))
    exit(1);
  unsigned bind_mount_flags = MS_BIND | MS_REC | MS_PRIVATE;
  if (mount("/dev", "./syz-tmp/newroot/dev", NULL, bind_mount_flags, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/proc", 0700))
    exit(1);
  if (mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/selinux", 0700))
    exit(1);
  const char* selinux_path = "./syz-tmp/newroot/selinux";
  if (mount("/selinux", selinux_path, NULL, bind_mount_flags, NULL)) {
    if (errno != ENOENT)
      exit(1);
    if (mount("/sys/fs/selinux", selinux_path, NULL, bind_mount_flags, NULL) &&
        errno != ENOENT)
      exit(1);
  }
  if (mkdir("./syz-tmp/newroot/sys", 0700))
    exit(1);
  if (mount("/sys", "./syz-tmp/newroot/sys", 0, bind_mount_flags, NULL))
    exit(1);
  if (mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/proc/sys/fs/binfmt_misc",
            "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, bind_mount_flags,
            NULL) &&
      errno != ENOENT)
    exit(1);
  if (mkdir("./syz-tmp/newroot/syz-inputs", 0700))
    exit(1);
  if (mount("/syz-inputs", "./syz-tmp/newroot/syz-inputs", NULL,
            bind_mount_flags | MS_RDONLY, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mkdir("./syz-tmp/pivot", 0777))
    exit(1);
  if (syscall(SYS_pivot_root, "./syz-tmp", "./syz-tmp/pivot")) {
    if (chdir("./syz-tmp"))
      exit(1);
  } else {
    if (chdir("/"))
      exit(1);
    if (umount2("./pivot", MNT_DETACH))
      exit(1);
  }
  if (chroot("./newroot"))
    exit(1);
  if (chdir("/"))
    exit(1);
  setup_gadgetfs();
  setup_binderfs();
  setup_fusectl();
}

static void setup_gadgetfs()
{
  if (mkdir("/dev/gadgetfs", 0777)) {
  }
  if (mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL)) {
  }
}

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

static void setup_binderfs()
{
  if (mkdir("/dev/binderfs", 0777)) {
  }
  if (mount("binder", "/dev/binderfs", "binder", 0, "stats=global")) {
    if (mount("binder", "/dev/binderfs", "binder", 0, NULL)) {
    }
  }
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  if (getppid() == 1)
    exit(1);
  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = (200 << 20);
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 32 << 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 = 128 << 20;
  setrlimit(RLIMIT_CORE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 256;
  setrlimit(RLIMIT_NOFILE, &rlim);
  if (unshare(CLONE_NEWNS)) {
  }
  if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL)) {
  }
  if (unshare(CLONE_NEWIPC)) {
  }
  if (unshare(0x02000000)) {
  }
  if (unshare(CLONE_NEWUTS)) {
  }
  if (unshare(CLONE_SYSVSEM)) {
  }
  typedef struct {
    const char* name;
    const char* value;
  } sysctl_t;
  static const sysctl_t sysctls[] = {
      {"/proc/sys/kernel/shmmax", "16777216"},
      {"/proc/sys/kernel/shmall", "536870912"},
      {"/proc/sys/kernel/shmmni", "1024"},
      {"/proc/sys/kernel/msgmax", "8192"},
      {"/proc/sys/kernel/msgmni", "1024"},
      {"/proc/sys/kernel/msgmnb", "1024"},
      {"/proc/sys/kernel/sem", "1024 1048576 500 1024"},
  };
  unsigned i;
  for (i = 0; i < sizeof(sysctls) / sizeof(sysctls[0]); i++)
    write_file(sysctls[i].name, sysctls[i].value);
}

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

static void drop_caps(void)
{
  struct __user_cap_header_struct cap_hdr = {};
  struct __user_cap_data_struct cap_data[2] = {};
  cap_hdr.version = _LINUX_CAPABILITY_VERSION_3;
  cap_hdr.pid = getpid();
  if (syscall(SYS_capget, &cap_hdr, &cap_data))
    exit(1);
  const int drop = (1 << CAP_SYS_PTRACE) | (1 << CAP_SYS_NICE);
  cap_data[0].effective &= ~drop;
  cap_data[0].permitted &= ~drop;
  cap_data[0].inheritable &= ~drop;
  if (syscall(SYS_capset, &cap_hdr, &cap_data))
    exit(1);
}

static int do_sandbox_none(void)
{
  if (unshare(CLONE_NEWPID)) {
  }
  int pid = fork();
  if (pid != 0)
    return wait_for_loop(pid);
  sandbox_common();
  drop_caps();
  if (unshare(CLONE_NEWNET)) {
  }
  write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535");
  sandbox_common_mount_tmpfs();
  loop();
  exit(1);
}

static void kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  for (int i = 0; i < 100; i++) {
    if (waitpid(-1, status, WNOHANG | __WALL) == pid)
      return;
    usleep(1000);
  }
  DIR* dir = opendir("/sys/fs/fuse/connections");
  if (dir) {
    for (;;) {
      struct dirent* ent = readdir(dir);
      if (!ent)
        break;
      if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
        continue;
      char abort[300];
      snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
               ent->d_name);
      int fd = open(abort, O_WRONLY);
      if (fd == -1) {
        continue;
      }
      if (write(fd, abort, 1) < 0) {
      }
      close(fd);
    }
    closedir(dir);
  } else {
  }
  while (waitpid(-1, status, __WALL) != pid) {
  }
}

static void reset_loop()
{
  char buf[64];
  snprintf(buf, sizeof(buf), "/dev/loop%llu", procid);
  int loopfd = open(buf, O_RDONLY);
  if (loopfd != -1) {
    ioctl(loopfd, LOOP_CLR_FD, 0);
    close(loopfd);
  }
}

static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  write_file("/proc/self/oom_score_adj", "1000");
}

static void close_fds()
{
  for (int fd = 3; fd < MAX_FDS; fd++)
    close(fd);
}

#define SWAP_FILE "./swap-file"
#define SWAP_FILE_SIZE (128 * 1000 * 1000)

static const char* setup_swap()
{
  swapoff(SWAP_FILE);
  unlink(SWAP_FILE);
  int fd = open(SWAP_FILE, O_CREAT | O_WRONLY | O_CLOEXEC, 0600);
  if (fd == -1)
    return "swap file open failed";
  fallocate(fd, FALLOC_FL_ZERO_RANGE, 0, SWAP_FILE_SIZE);
  close(fd);
  char cmdline[64];
  sprintf(cmdline, "mkswap %s", SWAP_FILE);
  if (runcmdline(cmdline))
    return "mkswap failed";
  if (swapon(SWAP_FILE, SWAP_FLAG_PREFER) == 1)
    return "swapon failed";
  return NULL;
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      setup_test();
      execute_one();
      close_fds();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  openat$cgroup_ro arguments: [
  //    fd: fd_cgroup (resource)
  //    file: nil
  //    flags: const = 0x275a (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd
  syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0ul, /*flags=*/0x275a,
          /*mode=*/0);
  //  memfd_create arguments: [
  //    name: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 73 64 61 31 00} (length 0xa)
  //    }
  //    flags: memfd_flags = 0x1 (8 bytes)
  //  ]
  //  returns fd_memfd
  NONFAILING(memcpy((void*)0x200000000040, "/dev/sda1\000", 10));
  syscall(__NR_memfd_create, /*name=*/0x200000000040ul,
          /*flags=MFD_CLOEXEC*/ 1ul);
  //  mprotect arguments: [
  //    addr: VMA[0x3000]
  //    len: len = 0x3000 (8 bytes)
  //    prot: mmap_prot = 0x1 (8 bytes)
  //  ]
  syscall(__NR_mprotect, /*addr=*/0x200000000000ul, /*len=*/0x3000ul,
          /*prot=PROT_READ*/ 1ul);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 32 00} (length 0x8)
  //    }
  //    flags: open_flags = 0x18d042 (4 bytes)
  //    mode: open_mode = 0x15 (2 bytes)
  //  ]
  //  returns fd
  NONFAILING(memcpy((void*)0x200000000040, "./file2\000", 8));
  res = syscall(
      __NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000040ul,
      /*flags=O_SYNC|O_LARGEFILE|O_DIRECT|O_CREAT|O_CLOEXEC|0x2*/ 0x18d042,
      /*mode=S_IXOTH|S_IROTH|S_IWGRP*/ 0x15);
  if (res != -1)
    r[0] = res;
  //  pwrite64 arguments: [
  //    fd: fd (resource)
  //    buf: ptr[in, buffer] {
  //      buffer: {ff} (length 0x1)
  //    }
  //    count: len = 0x58200 (8 bytes)
  //    pos: intptr = 0x5b000 (8 bytes)
  //  ]
  NONFAILING(memset((void*)0x200000000000, 255, 1));
  syscall(__NR_pwrite64, /*fd=*/r[0], /*buf=*/0x200000000000ul,
          /*count=*/0x58200ul, /*pos=*/0x5b000ul);
  //  syz_mount_image$exfat arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {65 78 66 61 74 00} (length 0x6)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x208008de (8 bytes)
  //    opts: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //      }
  //    }
  //    chdir: int8 = 0x1 (1 bytes)
  //    size: len = 0x14ff (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x14ff)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x2000000000c0, "exfat\000", 6));
  NONFAILING(memcpy((void*)0x200000001b40, "./file0\000", 8));
  NONFAILING(memcpy(
      (void*)0x200000000580,
      "\x78\x9c\xec\xdc\x0b\x98\x8f\x55\xd7\x30\xf0\xbd\xf6\xde\x37\x63\x9a\xf4"
      "\x6f\x92\xc3\xb0\xd7\x5e\x37\xff\x34\xd8\x24\x49\x0e\x09\x39\x24\x49\x92"
      "\x24\x39\x25\x24\x26\x49\x12\x12\x43\x4e\x49\x43\x12\x72\x9c\x24\x87\x21"
      "\x24\x87\x69\x4c\x1a\xe7\xf3\x21\xe7\xa4\xc9\x23\x4d\x92\x84\xe4\x14\xf6"
      "\x77\xe9\xe9\xfd\x3c\xef\xd3\xf3\xbe\x7d\xef\x57\xdf\xe7\xbd\xde\x59\xbf"
      "\xeb\xda\x97\xbd\xdc\xff\xb5\xfe\xeb\x9e\x35\xd7\xdc\xf7\xfd\xbf\xae\x99"
      "\xef\x7b\x8e\xaa\xdb\xbc\x5e\xad\xa6\x44\x24\xfe\x14\xf8\xfb\x3f\xc9\x42"
      "\x88\x18\x21\xc4\x30\x21\xc4\x0d\x42\x88\x40\x08\x51\x31\xbe\x62\xfc\x95"
      "\xe3\xf9\x14\x24\xff\xb9\x37\x61\x7f\xad\x47\xd3\xae\x75\x07\xec\x5a\xe2"
      "\xf9\xe7\x6e\x3c\xff\xdc\x8d\xe7\x9f\xbb\xf1\xfc\x73\x37\x9e\x7f\xee\xc6"
      "\xf3\xcf\xdd\x78\xfe\xb9\x1b\xcf\x9f\xb1\xdc\x6c\xfb\x9c\x22\x37\xf2\xca"
      "\xbd\x8b\x3f\xff\xcf\xcd\xf8\xfa\xff\x3f\x48\x4e\xd9\xc9\x5f\x6f\x2c\x7b"
      "\x73\xaf\xff\x42\x0a\xcf\x3f\x77\xe3\xf9\xe7\x6e\x3c\xff\xdc\x8d\xe7\x9f"
      "\xbb\xf1\xfc\x73\x37\x9e\xff\xff\x7c\x35\xff\x93\x63\x3c\xff\xdc\x8d\xe7"
      "\xcf\x58\x6e\x76\xad\x3f\x7f\xe6\x75\x6d\xd7\xb5\xfe\xfe\x63\x8c\x31\xc6"
      "\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c"
      "\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18"
      "\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31"
      "\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63"
      "\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6"
      "\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c"
      "\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\x96\x3b"
      "\x9c\xf3\x57\x69\x21\xc4\xbf\xed\xaf\x75\x5f\x8c\x31\xc6\x18\x63\x8c\x31"
      "\xc6\x18\xfb\xeb\xf8\xbc\xd7\xba\x03\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c"
      "\xfd\xbf\x07\x42\x0a\x25\xb4\x08\x44\x1e\x91\x57\xc4\x88\x7c\x22\x56\x5c"
      "\x27\xe2\xc4\xf5\x22\xbf\xb8\x41\x44\xc4\x8d\x22\x5e\xdc\x24\x0a\x88\x9b"
      "\x45\x41\x51\x48\x14\x16\x45\x44\x82\x28\x2a\x8a\x09\x23\x50\x58\x41\x22"
      "\x14\xc5\x45\x09\x11\x15\xb7\x88\x92\xe2\x56\x91\x28\x4a\x89\xd2\xa2\x8c"
      "\x70\xa2\xac\x28\x27\x6e\x13\xe5\xc5\xed\xa2\x82\xb8\x43\x80\xb8\x53\x54"
      "\x12\x77\x89\xca\xa2\x8a\xa8\x2a\xaa\x89\xbb\x45\x75\x71\x8f\xa8\x21\x6a"
      "\x8a\x5a\xe2\x5e\x51\x5b\xd4\x11\x75\x45\x3d\x71\x9f\xa8\x2f\xee\x17\x0d"
      "\xc4\x03\xa2\xa1\x78\x50\x34\x12\x0f\x89\xc6\xe2\x61\xd1\x44\x3c\x22\x9a"
      "\x8a\x47\x45\x33\xf1\x98\x68\x2e\x1e\x17\x2d\xc4\x13\xa2\xa5\x68\x25\x5a"
      "\x8b\x36\xa2\xed\xff\x55\xfe\xcb\xa2\xaf\x78\x45\xf4\x13\xfd\x45\xb2\x18"
      "\x20\x06\x8a\x57\xc5\x20\x31\x58\x0c\x11\x43\xc5\x30\xf1\x9a\x18\x2e\x5e"
      "\x17\x23\xc4\x1b\x22\x45\x8c\x14\xa3\xc4\x9b\x62\xb4\x78\x4b\x8c\x11\x6f"
      "\x8b\xb1\x62\x9c\x18\x2f\xde\x11\x13\xc4\x44\x31\x49\x4c\x16\x53\xc4\x54"
      "\x91\x2a\xde\x15\xd3\xc4\x7b\x62\xba\x78\x5f\xcc\x10\x33\xc5\x2c\x31\x5b"
      "\xa4\x89\x39\x62\xae\xf8\x40\xcc\x13\xf3\xc5\x02\xf1\xa1\x58\x28\x3e\x12"
      "\x8b\xc4\x62\xb1\x44\x2c\x15\xe9\xe2\x63\x91\x21\x96\x89\x4c\xf1\x89\x58"
      "\x2e\x3e\x15\x59\x62\x85\x58\x29\x56\x89\xd5\x62\x8d\x58\x2b\xd6\x89\xf5"
      "\x62\x83\xd8\x28\x36\x89\xcd\x62\x8b\xd8\x2a\xb6\x89\xed\xe2\x33\xb1\x43"
      "\xec\x14\xbb\xc4\x6e\xb1\x47\xec\x15\xfb\xc4\xe7\x62\xbf\xf8\x42\x1c\x10"
      "\x5f\x8a\x6c\xf1\xd5\x7f\x31\xff\xec\x3f\xe5\xf7\x02\x01\x02\x24\x48\xd0"
      "\xa0\x21\x0f\xe4\x81\x18\x88\x81\x58\x88\x85\x38\x88\x83\xfc\x90\x1f\x22"
      "\x10\x81\x78\x88\x87\x02\x50\x00\x0a\x42\x41\x28\x0c\x85\x21\x01\x12\xa0"
      "\x18\x14\x03\x04\x04\x02\x82\xe2\x50\x1c\xa2\x10\x85\x92\x50\x12\x12\x21"
      "\x11\x4a\x43\x69\x70\xe0\xa0\x1c\x94\x83\xf2\x70\x3b\x54\x80\x0a\x50\x11"
      "\x2a\x42\x25\xa8\x04\x95\xa1\x0a\x54\x81\x6a\x50\x0d\xaa\x43\x75\xa8\x01"
      "\x35\xa0\x16\xd4\x82\xda\x50\x1b\xea\x42\x5d\xb8\x0f\xee\x83\xfb\xa1\x01"
      "\x34\x80\x86\xd0\x10\x1a\x41\x23\x68\x0c\x8d\xa1\x09\x34\x81\xa6\xd0\x14"
      "\x9a\x41\x33\x68\x0e\xcd\xa1\x05\xb4\x80\x96\xd0\x12\x5a\x43\x6b\x68\x0b"
      "\x6d\xa1\x1d\xb4\x83\xf6\xd0\x1e\x3a\x42\x47\xe8\x04\x9d\xa0\x33\x74\x86"
      "\x24\x48\x82\xae\xd0\x15\xba\x41\x37\xe8\x0e\xdd\xa1\x07\xf4\x80\x9e\xd0"
      "\x13\x7a\x41\x6f\xe8\x0d\x2f\xc3\xcb\xf0\x0a\xbc\x02\xfd\xa1\xb6\x1c\x00"
      "\x03\x61\x20\x0c\x82\x41\x30\x04\x86\xc2\x50\x78\x0d\x86\xc3\xeb\xf0\x3a"
      "\xbc\x01\x29\x30\x12\x46\xc1\x9b\xf0\x26\xbc\x05\x63\xe0\x0c\x8c\x85\x71"
      "\x30\x1e\xc6\x43\x75\x39\x11\x26\xc1\x64\x20\x39\x15\x52\x21\x15\xa6\xc1"
      "\x34\x98\x0e\xd3\x61\x06\xcc\x84\x99\x30\x1b\xd2\x60\x0e\xcc\x85\xb9\x30"
      "\x0f\xe6\xc3\x7c\xf8\x10\x16\xc2\x47\xf0\x11\x2c\x86\xc5\xb0\x14\xd2\x21"
      "\x1d\x32\x60\x19\x64\x42\x26\x2c\x87\xb3\x90\x05\x2b\x60\x25\xac\x82\xd5"
      "\xb0\x06\x56\xc3\x3a\x58\x0f\xeb\x60\x23\x6c\x82\x8d\xb0\x05\xb6\xc0\x36"
      "\xd8\x06\x9f\xc1\x67\xb0\x13\x76\xc2\x6e\xd8\x0d\x7b\x61\x2f\x7c\x0e\x9f"
      "\xc3\x17\xf0\x05\xa4\x40\x36\x64\xc3\x41\x38\x08\x87\xe0\x10\x1c\x86\xc3"
      "\x90\x03\x39\x70\x04\x8e\xc0\x51\x38\x0a\xc7\xe0\x18\x1c\x87\xe3\x70\x02"
      "\x4e\xc2\x29\x38\x09\xa7\xe1\x34\x9c\x81\xb3\x70\x0e\xce\xc1\x05\xb8\x00"
      "\x17\xe1\xc5\x84\x6f\x9b\xed\x2d\xb5\x21\x45\xc8\x2b\xb4\xd4\x32\x8f\xcc"
      "\x23\x63\x64\x8c\x8c\x95\xb1\x32\x4e\xc6\xc9\xfc\x32\xbf\x8c\xc8\x88\x8c"
      "\x97\xf1\xb2\x80\x2c\x20\x0b\xca\x82\xb2\xb0\x2c\x2c\x13\x64\x82\x2c\x26"
      "\x8b\x49\x94\x28\x49\x86\xb2\xb8\x2c\x1e\x23\x84\x90\x25\x65\x49\x99\x28"
      "\x13\x65\x69\x59\x5a\x3a\xe9\x64\x39\x59\x4e\x96\x97\xe5\x65\x05\x59\x41"
      "\x56\x94\x77\xca\x4a\xf2\x2e\x59\x59\x56\x91\x1d\x5c\x35\x59\x4d\x56\x97"
      "\x1d\x5d\x0d\x59\x53\xd6\x92\xb5\x64\x6d\x59\x47\xd6\x95\xf5\x64\x3d\x59"
      "\x5f\xd6\x97\x0d\x64\x03\xd9\x50\x36\x94\x8d\x64\x23\xd9\x58\x3e\x2c\x9b"
      "\xc8\x01\x30\x04\x1e\x95\x57\x26\xd3\x5c\x8e\x84\x16\x72\x14\xb4\x94\xad"
      "\x64\x6b\xd9\x46\xbe\x05\x4f\xca\x76\x72\x0c\xb4\x97\x1d\x64\x47\xf9\xb4"
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      "\xa8\x39\x3d\x4e\x2d\xe8\x09\x6a\x49\xad\xa8\x35\xb5\xa1\xb6\xf4\x24\xb5"
      "\xa3\xa7\xa8\x3d\x75\xa0\x8e\xf4\x34\x75\xa2\x67\xa8\x33\x75\xa1\x24\x7a"
      "\x96\xba\xd2\x73\xd4\x8d\x9e\xa7\xee\xf4\x02\xf5\xa0\x17\xa9\x27\xbd\x44"
      "\xbd\xa8\x37\xf5\xa1\x97\xa9\x2f\xbd\x42\xfd\xa8\x3f\x25\xd3\x00\x1a\x48"
      "\xaf\xd2\x20\x1a\x4c\x43\x68\x28\x0d\xa3\xd7\x68\x38\xbd\x4e\x23\xe8\x0d"
      "\x4a\xa1\x91\x34\x8a\xde\xa4\xd1\xf4\x16\x8d\xa1\xb7\x69\x2c\x8d\xa3\xf1"
      "\xf4\x0e\x4d\xa0\x89\x34\x89\x26\xd3\x14\x9a\x4a\xa9\xf4\x2e\x9d\x4d\xef"
      "\x52\xf8\xca\xbd\xde\x0c\x9a\x49\xb3\x68\x36\xa5\xd1\x1c\x9a\x4b\x1f\xd0"
      "\x3c\x9a\x4f\x0b\xe8\x43\x5a\x48\x1f\xd1\x22\x5a\x4c\x4b\x68\x29\xa5\xd3"
      "\xc7\x94\x41\xcb\x28\x93\x3e\xa1\xe5\xf4\x29\x65\xd1\x0a\x5a\x49\xab\x68"
      "\x35\xad\xa1\xb5\xb4\x8e\xd6\xd3\x06\xda\x48\x9b\x68\x33\x6d\xa1\xad\xb4"
      "\x8d\xb6\xd3\x67\xb4\x83\x76\xd2\x2e\xda\x4d\x7b\x68\x2f\xed\xa3\xcf\x69"
      "\x3f\x7d\x41\x07\xe8\x4b\xca\xa6\xaf\xe8\x20\xfd\x8d\x0e\xd1\xd7\x74\x98"
      "\xbe\xa1\x1c\xfa\x96\x8e\xd0\x77\x74\x94\xbe\xa7\x63\xf4\x03\x1d\xa7\x1f"
      "\xe9\x04\x9d\xa4\x53\xf4\x13\x9d\xa6\x9f\xe9\x0c\x9d\xa5\x73\x74\x9e\x2e"
      "\xd0\x2f\x74\x91\x2e\xd1\x65\xf2\x24\x42\x08\x65\xa8\x42\x1d\x06\x61\x9e"
      "\x30\x6f\x18\x13\xe6\x0b\x63\xc3\xeb\xc2\xb8\xf0\xfa\x30\x7f\x78\x43\x18"
      "\x09\x6f\x0c\xe3\xc3\x9b\xc2\x02\xe1\xcd\x61\xc1\xb0\x50\x58\x38\x2c\x12"
      "\x26\x84\x45\xc3\x62\xa1\x09\x31\xb4\x21\x85\x61\x58\x3c\x2c\x11\x46\xc3"
      "\x5b\xc2\x92\xe1\xad\x61\x62\x58\x2a\x2c\x1d\x96\x09\x5d\x58\x36\x2c\x17"
      "\xde\x16\x96\x0f\x6f\x0f\x2b\x84\x77\x84\x15\xc3\x3b\xc3\x4a\xe1\x5d\x61"
      "\xe5\xb0\x4a\xf8\xf8\x83\xd5\xc2\xbb\xc3\xea\xe1\x3d\x61\x8d\xb0\x66\x58"
      "\x2b\xbc\x37\xac\x1d\xd6\x09\xeb\x86\xf5\xc2\xfb\xc2\xfa\xe1\xfd\x61\x83"
      "\xf0\x81\xb0\x61\xf8\x60\x58\x21\x7c\x28\x6c\x1c\x3e\x1c\x36\x09\x1f\x09"
      "\x9b\x86\x8f\x86\xcd\xc2\xc7\xc2\xe6\xe1\xe3\x61\x8b\xf0\x89\xb0\x65\xd8"
      "\x2a\x6c\x1d\xb6\x09\xdb\x86\x4f\x86\xed\xc2\xa7\xc2\xf6\x61\x87\xb0\x63"
      "\xf8\x74\xd8\x29\x7c\x26\xec\x1c\x76\x09\x93\xc2\x67\xc3\xae\xe1\x73\x7f"
      "\x78\x3c\x39\x1c\x10\x0e\x0c\x5f\x0d\x5f\x0d\xbd\x7f\x40\x2d\x89\x2e\x8d"
      "\xa6\x47\x3f\x8e\x66\x44\x97\x45\x33\xa3\x9f\x44\x97\x47\x3f\x8d\x66\x45"
      "\x57\x44\x57\x46\x57\x45\x57\x47\xd7\x44\xd7\x46\xd7\x45\xd7\x47\x37\x44"
      "\x37\x46\x37\x45\x37\x47\xb7\x44\xb7\x46\xb7\x45\xbd\xaf\x97\x57\x38\x70"
      "\xd2\x29\xa7\x5d\xe0\xf2\xb8\xbc\x2e\xc6\xe5\x73\xb1\xee\x3a\x17\xe7\xae"
      "\x77\xf9\xdd\x0d\x2e\xe2\x6e\x74\xf1\xee\x26\x57\xc0\xdd\xec\x0a\xba\x42"
      "\xae\xb0\x2b\xe2\x12\x5c\x51\x57\xcc\x19\x87\xce\x3a\x72\xa1\x2b\xee\x4a"
      "\xb8\xa8\xbb\xc5\x95\x74\xb7\xba\x44\x57\xca\x95\x76\x65\x9c\x73\x65\x5d"
      "\x39\xd7\xc6\xb5\x75\x6d\x5d\x3b\xf7\x94\x6b\xef\x3a\xb8\x8e\xee\x69\xf7"
      "\xb4\x7b\xc6\x3d\xe3\xba\xb8\x2e\xee\x59\xd7\xd5\x3d\xe7\xba\xb9\xe7\x5d"
      "\x77\xf7\x82\xeb\xe1\x5e\x74\x2f\xba\x97\x5c\x2f\xd7\xdb\xf5\x71\x2f\xbb"
      "\xbe\xee\x15\xd7\xcf\xf5\x77\xc9\x2e\xd9\x0d\x74\x03\xdd\x20\x37\xc8\x0d"
      "\x71\x43\xdc\x30\x37\xcc\x0d\x77\xc3\xdd\x08\x37\xc2\xa5\xb8\x14\x37\xca"
      "\x8d\x72\xa3\xdd\x68\x37\xc6\x8d\x71\x63\xdd\x58\x37\xde\x8d\x77\x13\xdc"
      "\x04\x37\xc9\x4d\x72\x53\xdc\x14\x97\xea\x52\xdd\x34\x37\xcd\x4d\x77\xd3"
      "\xdd\x0c\x37\xc3\xcd\x72\xb3\x5c\x9a\x4b\x73\x73\xdd\x5c\x37\xcf\xcd\x73"
      "\x0b\xdc\x02\xb7\x30\x71\xa1\x5b\xe4\x16\xb9\x25\x6e\x89\x4b\x77\xe9\x2e"
      "\xc3\x65\xb8\x4c\x97\xe9\x96\xbb\xe5\x2e\xcb\x65\xb9\x95\x6e\xa5\x5b\xed"
      "\x56\xbb\xb5\x6e\xad\x5b\xef\xd6\xbb\x8d\x6e\xa3\xdb\xec\x36\xbb\xad\x6e"
      "\xab\xdb\xee\xb6\xbb\x1d\x6e\x87\xdb\xe5\x76\xb9\x3d\x6e\x8f\xdb\xe7\xf6"
      "\xb9\xfd\x6e\xbf\x3b\xe0\x0e\xb8\x6c\x97\xed\x0e\xba\x83\xee\x90\x3b\xe4"
      "\x0e\xbb\x6f\x5c\x8e\xfb\xd6\x1d\x71\xdf\xb9\xa3\xee\x7b\x77\xcc\xfd\xe0"
      "\x8e\xbb\x1f\xdd\x09\x77\xd2\x9d\x72\x3f\xb9\xd3\xee\x67\x77\xc6\x9d\x75"
      "\xe7\xdc\x79\x77\xc1\xfd\xe2\x2e\xba\x4b\xee\xb2\xf3\x2e\x35\xf2\x6e\x64"
      "\x5a\xe4\xbd\xc8\xf4\xc8\xfb\x91\x19\x91\x99\x91\x59\x91\xd9\x91\xb4\xc8"
      "\x9c\xc8\xdc\xc8\x07\x91\x79\x91\xf9\x91\x05\x91\x0f\x23\x0b\x23\x1f\x45"
      "\x16\x45\x16\x47\x96\x44\x96\x46\xd2\x23\x1f\x47\x32\x22\xcb\x22\x99\x91"
      "\x4f\x22\xcb\x23\x9f\x46\xb2\x22\x2b\x22\x2b\x23\xab\x22\xab\x23\x6b\x22"
      "\xde\x17\xdd\x11\xfa\xe2\xbe\x84\x8f\xfa\x5b\x7c\x49\x7f\xab\x4f\xf4\xa5"
      "\x7c\x69\x5f\xc6\x3b\x5f\xf6\xb7\xa7\x3e\xed\x2b\xf8\x3b\x7c\x45\x7f\xa7"
      "\xaf\xe4\xef\xf2\x95\x7d\x15\x5f\xd5\x3f\xe1\x5b\xfa\x56\xbe\xb5\x6f\xe3"
      "\xdb\xfa\x27\x7d\x3b\xff\x94\x6f\xef\x3b\xf8\x8e\xfe\x69\xdf\xc9\x3f\xe3"
      "\x3b\xfb\x2e\x3e\xc9\x3f\xeb\xbb\xfa\xe7\x7c\x37\xff\xbc\xef\xee\x5f\xf0"
      "\x3d\xfc\x8b\xbe\xa7\x7f\xc9\xf7\xf2\xbd\x7d\x1f\xff\xb2\xef\xeb\x5f\xf1"
      "\xfd\x7c\x7f\x9f\xec\x07\xf8\x81\xfe\x55\x3f\xc8\x0f\xf6\x43\xfc\x50\x3f"
      "\xcc\xbf\xe6\x87\xfb\xd7\xfd\x08\xff\x86\x4f\xf1\x23\xfd\x28\xff\xa6\x1f"
      "\xed\xdf\xf2\x63\xfc\xdb\x7e\xac\x1f\xe7\xc7\xfb\x77\xfc\x04\x3f\xd1\x4f"
      "\xf2\x93\xfd\x14\x3f\xd5\xa7\xfa\x77\xfd\x34\xff\x9e\x9f\xee\xdf\xf7\x33"
      "\xfc\x4c\x3f\xcb\xcf\xf6\x69\x7e\x8e\x9f\xeb\x3f\xf0\xf3\xfc\x7c\xbf\xc0"
      "\x7f\xe8\x17\xfa\x8f\xfc\x22\xbf\xd8\x2f\xf1\x4b\x7d\xba\xff\xd8\x67\xf8"
      "\x65\x3e\xd3\x7f\xe2\x97\xfb\x4f\x7d\x96\x5f\xe1\x57\xfa\x55\x7e\xb5\x5f"
      "\xe3\xd7\xfa\x75\x7e\xbd\xdf\xe0\x37\xfa\x4d\x7e\xb3\xdf\xe2\xb7\xfa\x6d"
      "\x7e\xbb\xff\xcc\xef\xf0\x3b\xfd\x2e\xbf\xdb\xef\xf1\x7b\xfd\x3e\xff\xb9"
      "\xdf\xef\xbf\xf0\x07\xfc\x97\x3e\xdb\x7f\xe5\x0f\xfa\xbf\xf9\x43\xfe\x6b"
      "\x7f\xd8\x7f\xe3\x73\xfc\xb7\xfe\x88\xff\xce\x1f\xf5\xdf\xfb\x63\xfe\x07"
      "\x7f\xdc\xff\xe8\x4f\xf8\x93\xfe\x94\xff\xc9\x9f\xf6\x3f\xfb\x33\xfe\xac"
      "\x3f\xe7\xcf\xfb\x0b\xfe\x17\x7f\xd1\x5f\xf2\x97\xf9\x77\xd6\x18\x63\x8c"
      "\x31\xc6\xfe\x8f\xa8\x3f\x38\x3e\xe0\x5f\xfc\x9f\xfc\x6d\x5d\x31\x50\x08"
      "\x71\xfd\xce\x22\x39\xff\x5c\x73\x73\xc1\xbf\xef\x07\xcb\x84\x4e\x11\x21"
      "\xc4\xb3\xfd\x7b\x3e\xfa\x6f\xab\x76\xed\xe4\xe4\xe4\xdf\x5e\x9b\xa5\x44"
      "\x50\x62\xb1\x10\x22\x72\x35\x3f\x8f\xb8\x1a\xaf\x10\x1d\xc5\x33\x22\x49"
      "\x74\x10\xe5\xff\x65\x7f\x83\x65\xef\x0b\xf4\x07\xf5\xa3\x77\x0a\x11\x7b"
      "\xb5\xf2\xaf\x62\xc5\x3f\xd7\xbf\xfd\x3f\xa8\xff\xe4\xd3\xe3\x33\x2a\x85"
      "\xe7\xe2\xff\x93\xfa\x8b\x85\x48\x2c\x71\x35\x27\x9f\xb8\x1a\x5f\xad\x5f"
      "\xe1\x3f\xa8\x5f\xa8\xdd\x1f\xf4\x9f\xef\xeb\x54\x21\xda\xff\x43\x4e\x9c"
      "\xb8\x1a\x5f\xad\x5f\x4e\x3c\x25\x9e\x13\x49\xff\xee\x95\x8c\x31\xc6\x18"
      "\x63\x8c\x31\xc6\xd8\xdf\x0d\x96\x55\xbb\xff\xd1\xf3\xf3\x95\xe7\xf3\x04"
      "\x7d\x35\x27\xaf\xb8\x1a\xff\xd1\xf3\x39\x63\x8c\x31\xc6\x18\x63\x8c\x31"
      "\xc6\xae\xbd\x17\x7a\xf7\xe9\xf2\x64\x52\x52\x87\xee\xbc\xf9\x13\x9b\x1a"
      "\xff\x3d\xda\xe0\x0d\x6f\xfe\xb2\xcd\xb5\xfe\xc9\xc4\x18\x63\x8c\x31\xc6"
      "\x18\xfb\xab\x5d\xbd\xe9\xbf\xd6\x9d\x30\xc6\x18\x63\x8c\x31\xc6\x18\x63"
      "\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6"
      "\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\xb9\xd7\xff\x8f\x3f\x27"
      "\x76\xad\xcf\x91\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63"
      "\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6"
      "\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\xbb\xd6"
      "\xfe\x57\x00\x00\x00\xff\xff\x91\xab\x33\x3e",
      5375));
  NONFAILING(syz_mount_image(
      /*fs=*/0x2000000000c0, /*dir=*/0x200000001b40,
      /*flags=MS_I_VERSION|MS_SYNCHRONOUS|MS_NOSUID|MS_NOEXEC|MS_NODIRATIME|0x200000c4*/
      0x208008de, /*opts=*/0x2000000102c0, /*chdir=*/1, /*size=*/0x14ff,
      /*img=*/0x200000000580));
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  if ((reason = setup_swap()))
    printf("the reproducer may not work as expected: swap setup failed: %s\n",
           reason);
  install_segv_handler();
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      do_sandbox_none();
    }
  }
  sleep(1000000);
  return 0;
}