// https://syzkaller.appspot.com/bug?id=0e3c97f1c4112e102c9988afd5eff079350eab7f
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.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/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#include <linux/loop.h>
#include <linux/usb/ch9.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif

static unsigned long long procid;

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;
}

#define MAX_FDS 30

#define USB_MAX_IFACE_NUM 4
#define USB_MAX_EP_NUM 32
#define USB_MAX_FDS 6

struct usb_endpoint_index {
  struct usb_endpoint_descriptor desc;
  int handle;
};

struct usb_iface_index {
  struct usb_interface_descriptor* iface;
  uint8_t bInterfaceNumber;
  uint8_t bAlternateSetting;
  uint8_t bInterfaceClass;
  struct usb_endpoint_index eps[USB_MAX_EP_NUM];
  int eps_num;
};

struct usb_device_index {
  struct usb_device_descriptor* dev;
  struct usb_config_descriptor* config;
  uint8_t bDeviceClass;
  uint8_t bMaxPower;
  int config_length;
  struct usb_iface_index ifaces[USB_MAX_IFACE_NUM];
  int ifaces_num;
  int iface_cur;
};

struct usb_info {
  int fd;
  struct usb_device_index index;
};

static struct usb_info usb_devices[USB_MAX_FDS];

static struct usb_device_index* lookup_usb_index(int fd)
{
  for (int i = 0; i < USB_MAX_FDS; i++) {
    if (__atomic_load_n(&usb_devices[i].fd, __ATOMIC_ACQUIRE) == fd)
      return &usb_devices[i].index;
  }
  return NULL;
}

static int usb_devices_num;

static bool parse_usb_descriptor(const char* buffer, size_t length,
                                 struct usb_device_index* index)
{
  if (length < sizeof(*index->dev) + sizeof(*index->config))
    return false;
  memset(index, 0, sizeof(*index));
  index->dev = (struct usb_device_descriptor*)buffer;
  index->config = (struct usb_config_descriptor*)(buffer + sizeof(*index->dev));
  index->bDeviceClass = index->dev->bDeviceClass;
  index->bMaxPower = index->config->bMaxPower;
  index->config_length = length - sizeof(*index->dev);
  index->iface_cur = -1;
  size_t offset = 0;
  while (true) {
    if (offset + 1 >= length)
      break;
    uint8_t desc_length = buffer[offset];
    uint8_t desc_type = buffer[offset + 1];
    if (desc_length <= 2)
      break;
    if (offset + desc_length > length)
      break;
    if (desc_type == USB_DT_INTERFACE &&
        index->ifaces_num < USB_MAX_IFACE_NUM) {
      struct usb_interface_descriptor* iface =
          (struct usb_interface_descriptor*)(buffer + offset);
      index->ifaces[index->ifaces_num].iface = iface;
      index->ifaces[index->ifaces_num].bInterfaceNumber =
          iface->bInterfaceNumber;
      index->ifaces[index->ifaces_num].bAlternateSetting =
          iface->bAlternateSetting;
      index->ifaces[index->ifaces_num].bInterfaceClass = iface->bInterfaceClass;
      index->ifaces_num++;
    }
    if (desc_type == USB_DT_ENDPOINT && index->ifaces_num > 0) {
      struct usb_iface_index* iface = &index->ifaces[index->ifaces_num - 1];
      if (iface->eps_num < USB_MAX_EP_NUM) {
        memcpy(&iface->eps[iface->eps_num].desc, buffer + offset,
               sizeof(iface->eps[iface->eps_num].desc));
        iface->eps_num++;
      }
    }
    offset += desc_length;
  }
  return true;
}

static struct usb_device_index* add_usb_index(int fd, const char* dev,
                                              size_t dev_len)
{
  int i = __atomic_fetch_add(&usb_devices_num, 1, __ATOMIC_RELAXED);
  if (i >= USB_MAX_FDS)
    return NULL;
  if (!parse_usb_descriptor(dev, dev_len, &usb_devices[i].index))
    return NULL;
  __atomic_store_n(&usb_devices[i].fd, fd, __ATOMIC_RELEASE);
  return &usb_devices[i].index;
}

struct vusb_connect_string_descriptor {
  uint32_t len;
  char* str;
} __attribute__((packed));

struct vusb_connect_descriptors {
  uint32_t qual_len;
  char* qual;
  uint32_t bos_len;
  char* bos;
  uint32_t strs_len;
  struct vusb_connect_string_descriptor strs[0];
} __attribute__((packed));

static const char default_string[] = {8, USB_DT_STRING, 's', 0, 'y', 0, 'z', 0};

static const char default_lang_id[] = {4, USB_DT_STRING, 0x09, 0x04};

static bool
lookup_connect_response_in(int fd, const struct vusb_connect_descriptors* descs,
                           const struct usb_ctrlrequest* ctrl,
                           struct usb_qualifier_descriptor* qual,
                           char** response_data, uint32_t* response_length)
{
  struct usb_device_index* index = lookup_usb_index(fd);
  uint8_t str_idx;
  if (!index)
    return false;
  switch (ctrl->bRequestType & USB_TYPE_MASK) {
  case USB_TYPE_STANDARD:
    switch (ctrl->bRequest) {
    case USB_REQ_GET_DESCRIPTOR:
      switch (ctrl->wValue >> 8) {
      case USB_DT_DEVICE:
        *response_data = (char*)index->dev;
        *response_length = sizeof(*index->dev);
        return true;
      case USB_DT_CONFIG:
        *response_data = (char*)index->config;
        *response_length = index->config_length;
        return true;
      case USB_DT_STRING:
        str_idx = (uint8_t)ctrl->wValue;
        if (descs && str_idx < descs->strs_len) {
          *response_data = descs->strs[str_idx].str;
          *response_length = descs->strs[str_idx].len;
          return true;
        }
        if (str_idx == 0) {
          *response_data = (char*)&default_lang_id[0];
          *response_length = default_lang_id[0];
          return true;
        }
        *response_data = (char*)&default_string[0];
        *response_length = default_string[0];
        return true;
      case USB_DT_BOS:
        *response_data = descs->bos;
        *response_length = descs->bos_len;
        return true;
      case USB_DT_DEVICE_QUALIFIER:
        if (!descs->qual) {
          qual->bLength = sizeof(*qual);
          qual->bDescriptorType = USB_DT_DEVICE_QUALIFIER;
          qual->bcdUSB = index->dev->bcdUSB;
          qual->bDeviceClass = index->dev->bDeviceClass;
          qual->bDeviceSubClass = index->dev->bDeviceSubClass;
          qual->bDeviceProtocol = index->dev->bDeviceProtocol;
          qual->bMaxPacketSize0 = index->dev->bMaxPacketSize0;
          qual->bNumConfigurations = index->dev->bNumConfigurations;
          qual->bRESERVED = 0;
          *response_data = (char*)qual;
          *response_length = sizeof(*qual);
          return true;
        }
        *response_data = descs->qual;
        *response_length = descs->qual_len;
        return true;
      default:
        break;
      }
      break;
    default:
      break;
    }
    break;
  default:
    break;
  }
  return false;
}

typedef bool (*lookup_connect_out_response_t)(
    int fd, const struct vusb_connect_descriptors* descs,
    const struct usb_ctrlrequest* ctrl, bool* done);

static bool lookup_connect_response_out_generic(
    int fd, const struct vusb_connect_descriptors* descs,
    const struct usb_ctrlrequest* ctrl, bool* done)
{
  switch (ctrl->bRequestType & USB_TYPE_MASK) {
  case USB_TYPE_STANDARD:
    switch (ctrl->bRequest) {
    case USB_REQ_SET_CONFIGURATION:
      *done = true;
      return true;
    default:
      break;
    }
    break;
  }
  return false;
}

#define UDC_NAME_LENGTH_MAX 128

struct usb_raw_init {
  __u8 driver_name[UDC_NAME_LENGTH_MAX];
  __u8 device_name[UDC_NAME_LENGTH_MAX];
  __u8 speed;
};

enum usb_raw_event_type {
  USB_RAW_EVENT_INVALID = 0,
  USB_RAW_EVENT_CONNECT = 1,
  USB_RAW_EVENT_CONTROL = 2,
};

struct usb_raw_event {
  __u32 type;
  __u32 length;
  __u8 data[0];
};

struct usb_raw_ep_io {
  __u16 ep;
  __u16 flags;
  __u32 length;
  __u8 data[0];
};

#define USB_RAW_EPS_NUM_MAX 30
#define USB_RAW_EP_NAME_MAX 16
#define USB_RAW_EP_ADDR_ANY 0xff

struct usb_raw_ep_caps {
  __u32 type_control : 1;
  __u32 type_iso : 1;
  __u32 type_bulk : 1;
  __u32 type_int : 1;
  __u32 dir_in : 1;
  __u32 dir_out : 1;
};

struct usb_raw_ep_limits {
  __u16 maxpacket_limit;
  __u16 max_streams;
  __u32 reserved;
};

struct usb_raw_ep_info {
  __u8 name[USB_RAW_EP_NAME_MAX];
  __u32 addr;
  struct usb_raw_ep_caps caps;
  struct usb_raw_ep_limits limits;
};

struct usb_raw_eps_info {
  struct usb_raw_ep_info eps[USB_RAW_EPS_NUM_MAX];
};

#define USB_RAW_IOCTL_INIT _IOW('U', 0, struct usb_raw_init)
#define USB_RAW_IOCTL_RUN _IO('U', 1)
#define USB_RAW_IOCTL_EVENT_FETCH _IOR('U', 2, struct usb_raw_event)
#define USB_RAW_IOCTL_EP0_WRITE _IOW('U', 3, struct usb_raw_ep_io)
#define USB_RAW_IOCTL_EP0_READ _IOWR('U', 4, struct usb_raw_ep_io)
#define USB_RAW_IOCTL_EP_ENABLE _IOW('U', 5, struct usb_endpoint_descriptor)
#define USB_RAW_IOCTL_EP_DISABLE _IOW('U', 6, __u32)
#define USB_RAW_IOCTL_EP_WRITE _IOW('U', 7, struct usb_raw_ep_io)
#define USB_RAW_IOCTL_EP_READ _IOWR('U', 8, struct usb_raw_ep_io)
#define USB_RAW_IOCTL_CONFIGURE _IO('U', 9)
#define USB_RAW_IOCTL_VBUS_DRAW _IOW('U', 10, __u32)
#define USB_RAW_IOCTL_EPS_INFO _IOR('U', 11, struct usb_raw_eps_info)
#define USB_RAW_IOCTL_EP0_STALL _IO('U', 12)
#define USB_RAW_IOCTL_EP_SET_HALT _IOW('U', 13, __u32)
#define USB_RAW_IOCTL_EP_CLEAR_HALT _IOW('U', 14, __u32)
#define USB_RAW_IOCTL_EP_SET_WEDGE _IOW('U', 15, __u32)

static int usb_raw_open()
{
  return open("/dev/raw-gadget", O_RDWR);
}

static int usb_raw_init(int fd, uint32_t speed, const char* driver,
                        const char* device)
{
  struct usb_raw_init arg;
  strncpy((char*)&arg.driver_name[0], driver, sizeof(arg.driver_name));
  strncpy((char*)&arg.device_name[0], device, sizeof(arg.device_name));
  arg.speed = speed;
  return ioctl(fd, USB_RAW_IOCTL_INIT, &arg);
}

static int usb_raw_run(int fd)
{
  return ioctl(fd, USB_RAW_IOCTL_RUN, 0);
}

static int usb_raw_configure(int fd)
{
  return ioctl(fd, USB_RAW_IOCTL_CONFIGURE, 0);
}

static int usb_raw_vbus_draw(int fd, uint32_t power)
{
  return ioctl(fd, USB_RAW_IOCTL_VBUS_DRAW, power);
}

static int usb_raw_ep0_write(int fd, struct usb_raw_ep_io* io)
{
  return ioctl(fd, USB_RAW_IOCTL_EP0_WRITE, io);
}

static int usb_raw_ep0_read(int fd, struct usb_raw_ep_io* io)
{
  return ioctl(fd, USB_RAW_IOCTL_EP0_READ, io);
}

static int usb_raw_event_fetch(int fd, struct usb_raw_event* event)
{
  return ioctl(fd, USB_RAW_IOCTL_EVENT_FETCH, event);
}

static int usb_raw_ep_enable(int fd, struct usb_endpoint_descriptor* desc)
{
  return ioctl(fd, USB_RAW_IOCTL_EP_ENABLE, desc);
}

static int usb_raw_ep_disable(int fd, int ep)
{
  return ioctl(fd, USB_RAW_IOCTL_EP_DISABLE, ep);
}

static int usb_raw_ep0_stall(int fd)
{
  return ioctl(fd, USB_RAW_IOCTL_EP0_STALL, 0);
}

#define USB_MAX_PACKET_SIZE 4096

struct usb_raw_control_event {
  struct usb_raw_event inner;
  struct usb_ctrlrequest ctrl;
  char data[USB_MAX_PACKET_SIZE];
};

struct usb_raw_ep_io_data {
  struct usb_raw_ep_io inner;
  char data[USB_MAX_PACKET_SIZE];
};

static void set_interface(int fd, int n)
{
  struct usb_device_index* index = lookup_usb_index(fd);
  if (!index)
    return;
  if (index->iface_cur >= 0 && index->iface_cur < index->ifaces_num) {
    for (int ep = 0; ep < index->ifaces[index->iface_cur].eps_num; ep++) {
      int rv = usb_raw_ep_disable(
          fd, index->ifaces[index->iface_cur].eps[ep].handle);
      if (rv < 0) {
      } else {
      }
    }
  }
  if (n >= 0 && n < index->ifaces_num) {
    for (int ep = 0; ep < index->ifaces[n].eps_num; ep++) {
      int rv = usb_raw_ep_enable(fd, &index->ifaces[n].eps[ep].desc);
      if (rv < 0) {
      } else {
        index->ifaces[n].eps[ep].handle = rv;
      }
    }
    index->iface_cur = n;
  }
}

static int configure_device(int fd)
{
  struct usb_device_index* index = lookup_usb_index(fd);
  if (!index)
    return -1;
  int rv = usb_raw_vbus_draw(fd, index->bMaxPower);
  if (rv < 0) {
    return rv;
  }
  rv = usb_raw_configure(fd);
  if (rv < 0) {
    return rv;
  }
  set_interface(fd, 0);
  return 0;
}

static volatile long
syz_usb_connect_impl(uint64_t speed, uint64_t dev_len, const char* dev,
                     const struct vusb_connect_descriptors* descs,
                     lookup_connect_out_response_t lookup_connect_response_out)
{
  if (!dev) {
    return -1;
  }
  int fd = usb_raw_open();
  if (fd < 0) {
    return fd;
  }
  if (fd >= MAX_FDS) {
    close(fd);
    return -1;
  }
  struct usb_device_index* index = add_usb_index(fd, dev, dev_len);
  if (!index) {
    return -1;
  }
  char device[32];
  sprintf(&device[0], "dummy_udc.%llu", procid);
  int rv = usb_raw_init(fd, speed, "dummy_udc", &device[0]);
  if (rv < 0) {
    return rv;
  }
  rv = usb_raw_run(fd);
  if (rv < 0) {
    return rv;
  }
  bool done = false;
  while (!done) {
    struct usb_raw_control_event event;
    event.inner.type = 0;
    event.inner.length = sizeof(event.ctrl);
    rv = usb_raw_event_fetch(fd, (struct usb_raw_event*)&event);
    if (rv < 0) {
      return rv;
    }
    if (event.inner.type != USB_RAW_EVENT_CONTROL)
      continue;
    char* response_data = NULL;
    uint32_t response_length = 0;
    struct usb_qualifier_descriptor qual;
    if (event.ctrl.bRequestType & USB_DIR_IN) {
      if (!lookup_connect_response_in(fd, descs, &event.ctrl, &qual,
                                      &response_data, &response_length)) {
        usb_raw_ep0_stall(fd);
        continue;
      }
    } else {
      if (!lookup_connect_response_out(fd, descs, &event.ctrl, &done)) {
        usb_raw_ep0_stall(fd);
        continue;
      }
      response_data = NULL;
      response_length = event.ctrl.wLength;
    }
    if ((event.ctrl.bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD &&
        event.ctrl.bRequest == USB_REQ_SET_CONFIGURATION) {
      rv = configure_device(fd);
      if (rv < 0) {
        return rv;
      }
    }
    struct usb_raw_ep_io_data response;
    response.inner.ep = 0;
    response.inner.flags = 0;
    if (response_length > sizeof(response.data))
      response_length = 0;
    if (event.ctrl.wLength < response_length)
      response_length = event.ctrl.wLength;
    response.inner.length = response_length;
    if (response_data)
      memcpy(&response.data[0], response_data, response_length);
    else
      memset(&response.data[0], 0, response_length);
    if (event.ctrl.bRequestType & USB_DIR_IN) {
      rv = usb_raw_ep0_write(fd, (struct usb_raw_ep_io*)&response);
    } else {
      rv = usb_raw_ep0_read(fd, (struct usb_raw_ep_io*)&response);
    }
    if (rv < 0) {
      return rv;
    }
  }
  sleep_ms(200);
  return fd;
}

static volatile long syz_usb_connect(volatile long a0, volatile long a1,
                                     volatile long a2, volatile long a3)
{
  uint64_t speed = a0;
  uint64_t dev_len = a1;
  const char* dev = (const char*)a2;
  const struct vusb_connect_descriptors* descs =
      (const struct vusb_connect_descriptors*)a3;
  return syz_usb_connect_impl(speed, dev_len, dev, descs,
                              &lookup_connect_response_out_generic);
}

//% 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_RDWR);
  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) {
    res = chdir(target);
    if (res == -1) {
      err = errno;
    }
  }

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

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_RDWR);
  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 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();
      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;
    }
  }
}

void execute_one(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  syz_usb_connect arguments: [
  //    speed: usb_device_speed = 0x0 (8 bytes)
  //    dev_len: len = 0x2d (8 bytes)
  //    dev: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //        union ANYUNION {
  //          ANYBLOB: buffer: {12 01 00 02 19 82 30 20 13 04 23 60 e5 ec 01 02
  //          03 01 09 02 1b 00 01 00 00 60 02 09 04 84 00 01 ee 48 b1 00 09 05
  //          82} (length 0x27)
  //        }
  //      }
  //    }
  //    conn_descs: nil
  //  ]
  //  returns fd_usb
  memcpy((void*)0x200000000d00,
         "\x12\x01\x00\x02\x19\x82\x30\x20\x13\x04\x23\x60\xe5\xec\x01\x02\x03"
         "\x01\x09\x02\x1b\x00\x01\x00\x00\x60\x02\x09\x04\x84\x00\x01\xee\x48"
         "\xb1\x00\x09\x05\x82",
         39);
  syz_usb_connect(/*speed=*/0, /*dev_len=*/0x2d, /*dev=*/0x200000000d00,
                  /*conn_descs=*/0);
  //  syz_mount_image$erofs arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {65 72 6f 66 73 00} (length 0x6)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x8000c6 (8 bytes)
  //    opts: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //        union ANYUNION {
  //          ANYBLOB: buffer: {9f 63 43 f0 3b 35 f7 dd c6 4e be e8 7f 64 29 f7
  //          4f df 32 46 b3 82 c2 54 40 f7 6f a6 46 da 3c 9c df c4 ea 2b 2e 4c
  //          43 8e c0 82 6e e9 b0 be ce 57 35 d0 b0 e1 d5 36 39 b4 96 7e 8d 56
  //          73 13 ba 19 68 93 06 0d 54 ce 13 ef 07 c7 5b bf e9 6e 88 a8 35 40
  //          a2 ac ab ac 8f a5 a3 de 41 b4 03 14 df 4f 40 df cf b4 57 2f c0 98
  //          c7 b0 be e3 81 4e 46 bb 48 a1 59 40 d1 94 ca d5 ed 98 8f f9 a6 d3
  //          c4 fd 48 af 27 d5 e8 5f 40 35 38 79 23 d9 00 e7 56 40 c2 5e f8 34
  //          26 0c 0d 62 9e 0d 9f f1 41 d4 a4 f8 a1 66 36 65 1d ec ac f7 2a 99
  //          9a 9e 60 e4 67 00 ba ff 7f 3b d8 95 4d 84 e2 59 34 6a 4b 42 73 cd
  //          06 16 3d 95 09 e5 26 7a db ce f5 cc b4 6e ec 97 44 39 89 0f f6 f2
  //          06 10 f1 be ac 19 4b 81 04 7f 55 b8 ba 3c 28 5d 67 d2 df 2d 7b 1a
  //          77 91 ed ec 93 e0 0c 32 86 c8 31 eb 27 db 0d 8a 31 b0 81 fa b6 dc
  //          fb c2 35 2f 3b 7e ea e1 9d 6c fd 85 e3 7c 09 5b 6b 1f f9 48 59 ce
  //          df 36 f0 6b 73 cf f3 f7 97 67 5f b3 3f 43 a9 a0 f7 bb f8 94 fb 52
  //          1e 77 41 29 f9 0b 91 b1 f0 45 98 fd 63 7f 7e 2d af ae da a7 42 3d
  //          08 61 d4 ab ae c3 7a f0 69 a4 64 e6 83 04 97 ad 18 2e 96 85 a1 16
  //          53 bf b6 6f e9 cd 53 76 bd 7c b5 2b 81 c3 f1 c8 f2 1a 9f aa f0 51
  //          91 88 0b 37 5f 56 b0 96 0a 8c 51 a4 4a f2 e8 3f 38 47 39 db 34 9f
  //          6c 6e 1f a7 f1 bc 5f 12 f1 84 e1 8a 10 c1 5b 4e 22 6f e2 bd 7a e6
  //          a1 aa 5f 3e 64 16 ff f1 c5 d3 86 9a 3e 7f d3 8f 6d a1 ff db 61 13
  //          8d 0d 93 a7 25 f5 cf 75 e9 0c 3f b9 3d a2 8c 30 c5 4e 05 00 ee 3a
  //          4c 8c 98 24 1b 88 f0 b9 7b 6e bf 3b e3 0f 63 71 1f 37 4e 11 91 fc
  //          6f 1f bd e2 ba a1 d8 83 30 75 58 40 ee 4d ee 16 42 af 07 33 df 37
  //          c0 73 86 a2 d2 7d 7c 4f f6 19 2c 91 00 3a 4d ff 66 46 b6 da 9d f6
  //          0a 92 7d d9 17 67 b4 f5 fc e2 58 f5 27 d7 22 1a e2 54 76 ed e3 6e
  //          d0 bf 37 79 96 22 81 97 f9 85 a0 a8 a2 b0 93 22 b3 9e 6b ad 65 d2
  //          d9 d0 40 0e fa 3d 0b ae 22 05 0b d1 24 ac 2d ac 10 70 f5 64 fe 6e
  //          61 06 d0 50 c9 27 da e2 7e c3 8c 49 56 b2 67 54 82 7d 9a 03 49 c7
  //          f4 d3 e3 0f 0b 5d d4 5f ff d2 23 df 66 39 ad 86 bc 70 ff 77 80 c1
  //          bb 60 6f 39 f4 dc 46 cf 16 7b b4 3a 83 a3 e5 70 18 78 76 01 63 19
  //          4a 1e 10 e8 28 0f 12 6d 54 03 ed ac fd 65 cf 19 2b 5a 18 e7 97 64
  //          90 6e 3d 2a 37 3d 7c 63 55 2a 53 94 7f 06 c3 aa 9e 55 79 29 78 80
  //          33 d6 a3 4d f0 3f ba 31 c8 e5 3d 53 3f ec a5 8d 58 6a 5a 85 74 86
  //          44 e5 70 97 e3 d0 d5 db d3 dc 85 3e f7 e0 86 39 69 a3 43 a7 9b 23
  //          44 9c eb 43 10 4f f8 e8 3d 32 7e b6 16 e1 ae e6 e5 ce 83 f7 31 30
  //          21 93 0e e4 15 3e 99 fc 24 6d 6a b0 3b 6c 1c dc 33 5e 19 e6 90 80
  //          75 25 94 b3 ca 99 33 d2 61 55 d4 f1 a7 1e 7d f1 8b 05 c8 7f 6f 02
  //          a5 17 e6 97 c3 63 84 28 a7 59 ce 2d 6b 9c 32 72 56 a5 9e ec 2a a6
  //          30 e8 db 6d da 93 0a cc a5 b8 fe bc 28 72 ce f9 9a b6 e6 18 03 ab
  //          75 5e 98 38 4c 02 ef 30 1e e3 01 86 2c c4 ea 0f 12 ba 41 76 2a f4
  //          1f 64 d9 65 fa a4 5e b4 e6 ed 1c 3d de ea 93 c4 ca 73 a2 16 d7 fe
  //          a0 0c 3a fc b4 a8 18 77 7d b3 f5 6a 8b 12 53 87 f9 0f 87 45 eb 73
  //          e8 7e 6e 7c f8 f4 2f 12 c8 24 c6 53 25 31 70 e7 19 02 c6 68 9c 66
  //          09 33 ff af 5e b0 94 b0 93 27 f3 de 41 8a fc 33 d2 3f f8 a7 0a 3c
  //          83 78 d6 1f 18 6a f1 6b 9b d2 80 94 9e 82 c8 c6 68 28 3b ee ea 4a
  //          78 f7 32 a3 5d 43 c5 ac ce 7e c1 a5 36 50 3f f4 82 c5 98 e4 51 e9
  //          65 67 c3 7a 64 9f f6 bd 93 27 5a 65 2a b2 f9 58 26 a2 49 7d a8 dc
  //          b5 34 80 24 4e 56 87 9f d1 20 6e 70 f7 a3 4c 2c a4 49 63 3a 26 24
  //          78 5b 96 71 00 a6 16 56 ce 7a 25 82 ee 17 26 cb f6 7c de c5 ab 23
  //          8c 3d 2d 6e 15 2c f0 8f 39 f4 28 78 93 32 83 42 0a 62 fb a7 b1 9c
  //          12 8b b3 45 f3 8d 02 6d 55 37 1c ba a5 9b 07 90 6e 78 36 7a 0b 1f
  //          8b fa 8b 9b f0 34 17 69 f1 2c 38 36 2e 56 94 6c 09 36 4b b5 7b 28
  //          a7 42 05 39 92 64 90 0d 49 95 51 bd d4 ca 64 96 2e 7c 10 9d d4 d7
  //          70 33 6c 6d 24 35 39 8b 9c 0b b9 9f cf 8d 79 58 85 78 f0 01 19 ae
  //          18 5f 59 1e bc b4 f2 fc e3 dd e2 6c eb 5a fb ff 63 91 4c a0 35 a3
  //          f5 fd 30 70 b5 2d bc 1f e4 a4 37 49 76 53 84 78 c0 9e 84 c8 3e 40
  //          5d 1f 13 39 78 a5 2d c7 ad 83 f0 56 e0 d3 ca 60 a4 90 ae c7 64 b5
  //          fd 7d 00 ec cb 21 5f 03 c3 ee f8 95 bc a7 61 d6 94 f7 8d d3 13 8a
  //          53 2c a1 7f 2a 68 fe 7d 44 7e 4e 5b df f5 0d 33 e7 ca 64 d6 c8 7f
  //          dc 4c ec a5 a8 0c 28 46 31 2e 5d f9 a5 81 2d 2b ec c1 60 29 a2 bf
  //          88 89 80 e3 35 09 c7 7f 8e d3 e1 0a f8 44 8b 87 ed b2 4b fb 5e c2
  //          f3 ac 0a ed 5d 64 fe 15 c6 d0 e5 c8 92 5a c8 dc d3 49 43 21 60 d1
  //          65 01 f9 20 44 a9 8d 97 6a 95 83 e4 75 14 20 11 51 6b 75 b5 b7 c9
  //          09 72 41 a9 e5 53 57 3f 7d a5 e1 1c 1b 65 5a ac 1d bc c5 6b 08 8f
  //          ac 69 5e b1 54 c9 a7 07 2e 6f c1 75 3b 37 7b 77 a4 0c f8 d6 e5 7b
  //          23 33 c3 99 19 43 10 2b 7d 0f 1f 97 13 54 1e 14 f8 77 9f c4 6b 74
  //          46 77 14 ae ea bf fa b3 64 ff 78 5c c9 31 12 8a 34 30 e0 d1 9d 09
  //          3e fc 85 90 56 36 b0 48 5e 36 74 5b 65 d4 92 96 85 de 48 96 fe 5d
  //          41 a0 b5 9e 88 17 8c 08 b3 00 36 ea 37 18 b1 67 c4 61 2c 09 ce 5d
  //          87 bf cb 30 a3 02 4f 5d c4 85 c2 ec 5f b3 9f cd 7f bb e3 28 a8 84
  //          cb 27 29 ba 28 fe ba 2c 8d 1a 94 3e e6 34 9b fe 2d a2 2e e3 0b 72
  //          1c 01 12 28 55 61 09 9b be d4 f3 f7 e2 2c 85 fe 65 4a 98 4f 64 40
  //          54 ae c0 8b 43 29 f0 0b e7 c4 78 6b 2e ad 00 f9 22 eb 16 a7 b7 c6
  //          c2 4c 2c 23 02 8a ef e0 87 8b 91 5c d7 c2 cb c1 90 2b 6f db 86 25
  //          81 23 41 fd fc 3d 79 87 73 af 7f a2 fd fa de 0e bb b9 ec 0a 84 47
  //          35 8f 82 49 0f c2 e2 5b 12 6d ac 67 cd 5d af ed b0 7e 4b f8 72 ea
  //          e0 80 2f 0c d3 ec 37 fe 0c 8a 2f 0a d4 e1 07 d4 75 43 9b b2 05 75
  //          2c a3 f0 38 3f 7b 19 f0 de 1f da 74 35 2c ce c3 70 70 9c 22 04 69
  //          8c 3b cf 9e 13 a6 54 da ed 7c f1 20 ce 76 b9 86 4f 55 33 90 c5 bb
  //          5d 4b c0 63 87 75 3e a7 40 89 b2 01 b9 fd 79 b5 82 f0 9b 04 68 ae
  //          6a e3 53 59 a8 ac 2c 2d d9 51 3e 8a 75 f9 4b f9 75 d8 36 70 76 d3
  //          24 6b 07 93 ee a5 61 54 d5 77 c0 e4 de bb 61 a8 7c 80 3a b5 e8 43
  //          91 81 3a 6a 16 df 27 0b 16 18 c8 5f 5e 1d fb eb 9c 43 48 51 5d ca
  //          d8 d3 48 a3 f6 b2 5b cc 11 a0 c9 50 69 b3 81 1c d4 37 7a 21 bf 90
  //          af 76 54 46 1d 63 af 09 d0 03 76 24 40 41 a6 f1 f7 b2 e5 d8 6e f1
  //          9c f8 8f df 92 78 7d 4b bd 50 20 3f ae 56 b7 90 60 b2 f4 8f d9 1b
  //          41 1a 1d 6f 20 7c 0f 6e ef e6 f9 0a 7c d9 8a 66 2d 1c bb a7 e8 2e
  //          28 3c 07 61 3a 1a 36 71 08 95 b9 25 09 97 4b 62 3f 47 76 74 e6 5c
  //          31 90 f7 a8 c3 d7 7f 5f 9c 2c 7b 8d ce c6 98 42 ec 6a ee 2d 1f 9b
  //          b1 ed 9d 08 9d 64 8e d8 bf 70 c5 50 09 a5 7d 12 11 22 c8 68 0c a0
  //          c1 51 a8 e6 85 bd 33 56 d5 02 f0 87 67 1d 18 96 84 d2 d0 48 5f 4c
  //          1c 9b a2 6b ba 8d 3c e3 78 23 b7 c9 f3 33 df 9d 58 95 53 59 09 e7
  //          6d 3b 2b bd 28 16 7c 0c ba 62 ba 39 d5 cc e0 f0 c7 f3 95 4e b5 f3
  //          08 6a 90 89 2d 54 85 6f 4b c3 2f 73 08 34 1c 76 02 c0 36 bb 98 42
  //          ba d9 04 45 b1 4c 3f 1c 74 72 53 d7 74 54 db ad 9c 6c 4e 78 a7 bc
  //          54 6f 47 01 18 da e7 e2 a8 20 69 47 01 37 53 11 6a 9a b7 55 59 1d
  //          b3 b7 07 0c 4f 2b 89 83 f1 db 7f 22 a4 a5 23 7a 39 73 05 c5 82 05
  //          c7 69 dd 57 66 84 a5 ee ac 80 21 37 64 5e a0 a6 06 e6 4e db 6c 3c
  //          70 4c cf 46 e7 90 8e 07 be 70 fd 29 e2 3c 7e 22 96 44 48 03 a6 3b
  //          ad 7e 5d 0f 49 41 a5 4e 78 c1 8b 6c a1 8f c8 f6 fd 4c be aa 30 f1
  //          5b c4 cd 6d f5 76 6e 09 48 47 37 ae 6f 86 24 ac 83 9f b6 6a 6e 56
  //          52 29 9e c4 2d ba ef b0 c6 20 c8 23 2d 1f 87 d0 d5 bb ad 3e d7 7d
  //          54 fc b4 0e 1c a7 76 c8 59 ae 5c 2c 2d ba 4d b6 9f e4 c4 d2 e2 7a
  //          8a c4 fd 52 2f 7f 35 0f ca 67 93 14 55 9a 0d 6c ef 4b 0f ee c7 00
  //          bd 0e a7 2c 76 5a 2d 7f 2b 09 ed 30 33 54 ba 6d 44 f9 de d3 2a b3
  //          eb ba 65 fd 1f 63 12 26 63 a5 8d 95 f3 b9 8f 55 0d 5e 69 84 4d f5
  //          b1 0d 96 d0 36 f0 41 e8 97 ed 69 ca 01 0f 98 00 7f fb e8 91 7f b5
  //          de 8d af 55 6a c7 2e 29 ad ef 74 b0 af 82 be 3b 3b 51 cd 96 74 da
  //          89 91 9b e0 93 02 4f cf f5 e9 28 7d e0 73 96 90 16 e0 80 e1 76 7a
  //          1c e3 5f 17 2e 67 6e fe 86 01 1e c5 9b f8 06 e0 59 c3 5f 48 43 7b
  //          76 68 05 64 03 4a c6 08 80 b8 9d 2c 11 bf 63 d6 aa b4 23 59 f5 f3
  //          dd 47 73 00 f7 c9 20 7b 72 27 a0 1d 9f f8 b8 fa 95 96 24 3b 75 72
  //          93 3f 1b 3e 8e 65 9b 28 a4 41 9c 3c 5e 92 6f fd e9 db c0 b5 fa 2d
  //          d6 44 eb 32 f5 6e fb cf 09 46 b9 78 df 6e d4 0d 1f e7 9d d8 91 1d
  //          06 81 db 52 94 38 a4 04 9a 10 a4 9d 3d 45 e3 7e 29 94 c8 93 9e 36
  //          4f 07 db a8 7b 10 35 22 c2 00 39 e4 ae 61 10 2d b8 8e 3f 13 74 f2
  //          c7 88 fa be 12 a7 31 b4 6a ac 3c c7 c7 27 47 ca 87 c9 6d 7c 09 f2
  //          c4 7f bd 4e 9e 5b e6 3b d6 b4 23 71 9e e1 b5 ba 0c e8 63 c1 eb c8
  //          bc 80 dc 75 7b 81 1a d1 c7 82 55 f6 1c 52 8c e3 53 52 7b a6 ae 7a
  //          32 4f ca 73 2e c7 2f d7 4a 32 e6 b8 3d d7 02 59 e7 d5 05 f1 bc 6a
  //          e5 78 74 10 1d ad 86 3b cd 1e e0 51 d3 9b 6d e0 59 22 3e ad ed 2b
  //          36 c5 03 1e 15 9d 58 79 3a 53 9f f7 5a e9 40 73 44 38 4e 5e e2 0f
  //          6a 59 b7 ce 17 3b f6 df e7 c5 e1 ad 21 58 b9 0e 0a 98 92 85 0f b9
  //          e0 cd 1d ac eb 76 6a 5f 8d 94 9d cd 1d ab 81 28 87 c2 53 29 a0 91
  //          d4 37 1c 39 3b 47 b5 af e5 98 05 9d 43 56 ce 78 80 0a c6 41 2a 0b
  //          12 90 34 4e 39 60 5b 01 13 25 1f 58 6f 66 ba ca 16 f0 d6 47 7f 9d
  //          de d2 36 02 24 1b fb 28 62 4e 85 81 8e 42 b6 02 14 e3 51 4a eb b5
  //          07 6e eb ca 24 91 8a 9b 83 0e b1 0c 99 d7 d4 03 8f b7 77 a7 ee f6
  //          a9 48 db 28 14 63 bf f8 92 7d f3 69 14 65 d0 cf 78 97 67 2c 77 8e
  //          48 10 ed b4 e8 f5 4d df ad 72 bd 95 cc f3 57 9a 4a f3 5c 9a 39 f7
  //          8f 12 e7 39 a3 b1 77 8a ad 80 52 bf ef 06 46 18 23 f7 01 8a 06 e7
  //          ba 1f f8 a9 ed 88 12 9d c5 41 3e 92 73 ec d6 d6 03 c0 8c 14 37 68
  //          e0 f0 8a 1a 2a c0 5e 01 64 c3 4c 9f c4 09 68 eb 39 ed 82 f3 77 36
  //          41 fa 75 4d dc cd 02 fa 89 a0 4a 51 13 c7 aa ef 49 71 44 e0 df f1
  //          d7 aa 3d 46 47 e6 5f 61 0a 52 eb 36 83 f6 c9 a5 35 52 8d 0f d7 ce
  //          47 2e be ba 1b 51 c0 4b 0a ad 63 92 86 75 08 06 40 20 97 ec 9c 13
  //          95 a9 a6 67 35 e9 ba b7 72 55 19 93 b3 58 2b 15 c6 14 00 73 9c ca
  //          57 ed 3e 1b 02 cc 22 83 ce 72 d9 78 c9 b0 c9 61 65 16 70 e6 61 ef
  //          1e 57 f7 27 af 3a 1e 2a 52 01 2b 2b f5 01 63 6e 28 5a 17 a5 fc 01
  //          6a 56 1f b4 dc 09 44 80 4c 2c a9 61 3c b7 d1 a5 d9 12 73 4d 35 3d
  //          19 71 3f ee 49 e7 a4 d7 d1 69 fd d6 55 eb a8 ab 2a 87 eb ee 38 1e
  //          ac 8a 47 57 06 3b 39 97 75 e6 e9 7f d2 ef 76 28 31 41 aa 62 9a 67
  //          03 fc 37 87 38 3f 19 62 8c 58 a5 86 6f f2 b9 53 33 29 91 88 e1 b1
  //          07 80 fc d2 58 12 b7 be 75 fa 33 6c 9b b4 10 0d 5b d8 e9 70 46 dd
  //          98 12 9e cb e7 d4 df be 32 4e 6c 93 0c ee 3f 1c 50 03 1f 32 da 9a
  //          be 8b 5d d7 ce 37 ad 83 1f a4 bb 61 15 98 4d df 6f 05 22 64 22 db
  //          49 ff e5 66 c4 d0 c4 33 44 52 50 eb c0 7a 36 29 d5 39 19 1a 0e cd
  //          28 af 5e 72 29 90 69 bf a4 4d 1f 7b 25 00 ca 35 5b 28 5b ea ce 54
  //          93 e9 57 13 bc 04 cc f6 35 d3 57 93 93 6c af be d5 87 f2 71 0c ed
  //          ac ca 0d 20 fd 40 e6 e0 02 a6 4c 20 2a 6c 26 d9 51 e6 ad d0 58 b1
  //          75 aa 0f 86 6f 2a f4 6c 87 b1 dd 06 e1 90 07 3c d6 3d 78 96 8b 83
  //          96 00 3b 46 05 99 ce 83 c3 bd 80 bf 46 b0 41 61 ba 88 74 5f 10 22
  //          50 d6 43 1d 68 42 c6 b5 47 df b3 6a f9 5c 78 d9 25 0b ca 59 d7 68
  //          11 c8 03 99 ed a6 b9 4f 0e 83 d1 c7 f5 e4 0e 6f 99 9a 02 e4 a7 34
  //          3d fb a9 c0 83 61 64 af 4a 55 46 23 3d 3f ae 04 2d b0 ea 2f 21 f3
  //          01 6b 5f cc 01 66 8c 71 69 7e 27 ea c8 01 5a 93 e7 89 5d f2 64 2d
  //          32 03 76 70 3d ba 3f be 75 ff 3f 15 59 30 e5 cd 73 1a 43 b9 72 ba
  //          61 fc b1 1d f6 77 cd 25 8d 1a 25 96 ce 5d 4a 95 bd c2 56 33 ec c3
  //          19 a0 9e 5f 0b 69 7c 46 d2 4b 8a eb 4e 7f f0 bd dc 31 da 63 89 86
  //          bb 75 bb 48 25 f0 f1 12 8d b5 c4 95 db 0a 80 f3 da ce 0d 7e 7c 89
  //          c4 16 d4 20 31 c3 d6 07 41 15 dc ce 4a fd ff 42 43 12 a0 5a 8d 1d
  //          0c f9 0f e9 4e 9c 61 56 5f f1 ab ed 12 d5 eb 24 26 4a 8d ab 82 35
  //          bf 12 10 d5 dc 76 76 8d 03 03 ba e6 55 b6 58 b2 26 a3 03 9d 51 ec
  //          3d 6b ce 5d b2 81 9c cb a3 2d ed d8 59 9a 42 74 eb f9 a7 3a 76 b8
  //          06 5a f4 6d e0 9f 75 d7 36 50 49 df e7 c0 30 04 d1 4a ac d5 ee c8
  //          ce 52 52 ef bc 93 ba 3d 7f 81 ae 65 89 0c fe b0 77 be bd ef f1 47
  //          e6 39 9b 8e 9c 65 53 cf 8e 54 a1 a6 c1 ee b8 84 63 27 5e 8a a4 89
  //          6b 58 65 6a 68 bb d5 fb 05 75 b8 94 09 1a d7 cb 5f b3 66 cb c2 9a
  //          6b 57 6a 3c 75 06 9d 8f b5 1e f2 af 8f ea 44 87 16 7c 3b 78 ad cf
  //          16 cf 4c 45 09 ba e2 a4 fb 0c 5f 4c 84 f9 73 05 ac c6 59 3e f9 5b
  //          b5 ef 1b 2d b5 0f 86 1f ec ab 29 7f 11 13 e9 79 19 2a 5d 42 aa c3
  //          79 24 29 78 e5 eb 70 e5 5e a5 e5 02 26 be 03 90 dd 75 8a a3 54 0d
  //          58 ed 86 e7 bd 4c 9a cd 8c e4 49 af ba f0 4f 33 de 0f 4d 8a 52 69
  //          a2 bb a3 59 ab ee 39 fd 22 2f 5e 32 c4 98 9c 46 bd 23 c1 70 20 57
  //          27 3c 10 e7 c4 c3 d5 57 6e d9 2d 1f a2 05 26 d4 00 2c 93 23 a6 f9
  //          04 78 2d 4b a3 cd d2 ad 14 99 56 9c b1 46 6a f3 df 60 31 ba ce 8f
  //          6e 9a 07 7e 65 57 f9 4c 3f f8 cc 01 5b 8d 6a 82 f8 34 90 2f bf e9
  //          66 7c 24 fb b7 d2 af 3f af 7b 22 aa a0 32 3e ca c4 ee ac a3 d1 10
  //          be db b6 58 4e c5 2b c7 85 5f cf 27 12 32 66 8f 15 93 ee 6f 2a 84
  //          ab 39 44 a9 d8 a0 eb 5e 12 df b7 76 8d b8 91 18 18 6d b8 7e 4a 51
  //          f9 8a 36 59 0f de a5 e7 a6 35 b0 42 a5 86 ce a1 29 a3 c4 ac fe 9d
  //          6d 15 4e 0c 61 4a e8 46 6a 18 b4 f3 7a 47 b5 8c 64 7f 6e c3 fb cf
  //          4e b9 28 ea 05 08 43 26 0c a0 1f 3d 20 b7 7a e5 ec ed 11 b5 f1 7b
  //          92 10 63 e1 2c b7 d5 91 4d d7 16 8e a5 17 ef e7 56 9c 5f 25 c0 9c
  //          be 42 a6 37 a6 6f 70 c8 28 9c a7 f9 a1 1e 49 4c ea 83 5b 16 d4 48
  //          0a 75 c9 ad 6d 97 20 0f 2c f8 ee 8f 1c c4 8f d7 5d 2e 98 db 79 97
  //          e3 26 32 0b a3 b2 2d fc 88 02} (length 0x1000)
  //        }
  //      }
  //    }
  //    chdir: int8 = 0x0 (1 bytes)
  //    size: len = 0x17d (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x17d)
  //    }
  //  ]
  //  returns fd_dir
  memcpy((void*)0x2000000003c0, "erofs\000", 6);
  memcpy((void*)0x200000000880, "./file0\000", 8);
  memcpy(
      (void*)0x200000001c40,
      "\x9f\x63\x43\xf0\x3b\x35\xf7\xdd\xc6\x4e\xbe\xe8\x7f\x64\x29\xf7\x4f\xdf"
      "\x32\x46\xb3\x82\xc2\x54\x40\xf7\x6f\xa6\x46\xda\x3c\x9c\xdf\xc4\xea\x2b"
      "\x2e\x4c\x43\x8e\xc0\x82\x6e\xe9\xb0\xbe\xce\x57\x35\xd0\xb0\xe1\xd5\x36"
      "\x39\xb4\x96\x7e\x8d\x56\x73\x13\xba\x19\x68\x93\x06\x0d\x54\xce\x13\xef"
      "\x07\xc7\x5b\xbf\xe9\x6e\x88\xa8\x35\x40\xa2\xac\xab\xac\x8f\xa5\xa3\xde"
      "\x41\xb4\x03\x14\xdf\x4f\x40\xdf\xcf\xb4\x57\x2f\xc0\x98\xc7\xb0\xbe\xe3"
      "\x81\x4e\x46\xbb\x48\xa1\x59\x40\xd1\x94\xca\xd5\xed\x98\x8f\xf9\xa6\xd3"
      "\xc4\xfd\x48\xaf\x27\xd5\xe8\x5f\x40\x35\x38\x79\x23\xd9\x00\xe7\x56\x40"
      "\xc2\x5e\xf8\x34\x26\x0c\x0d\x62\x9e\x0d\x9f\xf1\x41\xd4\xa4\xf8\xa1\x66"
      "\x36\x65\x1d\xec\xac\xf7\x2a\x99\x9a\x9e\x60\xe4\x67\x00\xba\xff\x7f\x3b"
      "\xd8\x95\x4d\x84\xe2\x59\x34\x6a\x4b\x42\x73\xcd\x06\x16\x3d\x95\x09\xe5"
      "\x26\x7a\xdb\xce\xf5\xcc\xb4\x6e\xec\x97\x44\x39\x89\x0f\xf6\xf2\x06\x10"
      "\xf1\xbe\xac\x19\x4b\x81\x04\x7f\x55\xb8\xba\x3c\x28\x5d\x67\xd2\xdf\x2d"
      "\x7b\x1a\x77\x91\xed\xec\x93\xe0\x0c\x32\x86\xc8\x31\xeb\x27\xdb\x0d\x8a"
      "\x31\xb0\x81\xfa\xb6\xdc\xfb\xc2\x35\x2f\x3b\x7e\xea\xe1\x9d\x6c\xfd\x85"
      "\xe3\x7c\x09\x5b\x6b\x1f\xf9\x48\x59\xce\xdf\x36\xf0\x6b\x73\xcf\xf3\xf7"
      "\x97\x67\x5f\xb3\x3f\x43\xa9\xa0\xf7\xbb\xf8\x94\xfb\x52\x1e\x77\x41\x29"
      "\xf9\x0b\x91\xb1\xf0\x45\x98\xfd\x63\x7f\x7e\x2d\xaf\xae\xda\xa7\x42\x3d"
      "\x08\x61\xd4\xab\xae\xc3\x7a\xf0\x69\xa4\x64\xe6\x83\x04\x97\xad\x18\x2e"
      "\x96\x85\xa1\x16\x53\xbf\xb6\x6f\xe9\xcd\x53\x76\xbd\x7c\xb5\x2b\x81\xc3"
      "\xf1\xc8\xf2\x1a\x9f\xaa\xf0\x51\x91\x88\x0b\x37\x5f\x56\xb0\x96\x0a\x8c"
      "\x51\xa4\x4a\xf2\xe8\x3f\x38\x47\x39\xdb\x34\x9f\x6c\x6e\x1f\xa7\xf1\xbc"
      "\x5f\x12\xf1\x84\xe1\x8a\x10\xc1\x5b\x4e\x22\x6f\xe2\xbd\x7a\xe6\xa1\xaa"
      "\x5f\x3e\x64\x16\xff\xf1\xc5\xd3\x86\x9a\x3e\x7f\xd3\x8f\x6d\xa1\xff\xdb"
      "\x61\x13\x8d\x0d\x93\xa7\x25\xf5\xcf\x75\xe9\x0c\x3f\xb9\x3d\xa2\x8c\x30"
      "\xc5\x4e\x05\x00\xee\x3a\x4c\x8c\x98\x24\x1b\x88\xf0\xb9\x7b\x6e\xbf\x3b"
      "\xe3\x0f\x63\x71\x1f\x37\x4e\x11\x91\xfc\x6f\x1f\xbd\xe2\xba\xa1\xd8\x83"
      "\x30\x75\x58\x40\xee\x4d\xee\x16\x42\xaf\x07\x33\xdf\x37\xc0\x73\x86\xa2"
      "\xd2\x7d\x7c\x4f\xf6\x19\x2c\x91\x00\x3a\x4d\xff\x66\x46\xb6\xda\x9d\xf6"
      "\x0a\x92\x7d\xd9\x17\x67\xb4\xf5\xfc\xe2\x58\xf5\x27\xd7\x22\x1a\xe2\x54"
      "\x76\xed\xe3\x6e\xd0\xbf\x37\x79\x96\x22\x81\x97\xf9\x85\xa0\xa8\xa2\xb0"
      "\x93\x22\xb3\x9e\x6b\xad\x65\xd2\xd9\xd0\x40\x0e\xfa\x3d\x0b\xae\x22\x05"
      "\x0b\xd1\x24\xac\x2d\xac\x10\x70\xf5\x64\xfe\x6e\x61\x06\xd0\x50\xc9\x27"
      "\xda\xe2\x7e\xc3\x8c\x49\x56\xb2\x67\x54\x82\x7d\x9a\x03\x49\xc7\xf4\xd3"
      "\xe3\x0f\x0b\x5d\xd4\x5f\xff\xd2\x23\xdf\x66\x39\xad\x86\xbc\x70\xff\x77"
      "\x80\xc1\xbb\x60\x6f\x39\xf4\xdc\x46\xcf\x16\x7b\xb4\x3a\x83\xa3\xe5\x70"
      "\x18\x78\x76\x01\x63\x19\x4a\x1e\x10\xe8\x28\x0f\x12\x6d\x54\x03\xed\xac"
      "\xfd\x65\xcf\x19\x2b\x5a\x18\xe7\x97\x64\x90\x6e\x3d\x2a\x37\x3d\x7c\x63"
      "\x55\x2a\x53\x94\x7f\x06\xc3\xaa\x9e\x55\x79\x29\x78\x80\x33\xd6\xa3\x4d"
      "\xf0\x3f\xba\x31\xc8\xe5\x3d\x53\x3f\xec\xa5\x8d\x58\x6a\x5a\x85\x74\x86"
      "\x44\xe5\x70\x97\xe3\xd0\xd5\xdb\xd3\xdc\x85\x3e\xf7\xe0\x86\x39\x69\xa3"
      "\x43\xa7\x9b\x23\x44\x9c\xeb\x43\x10\x4f\xf8\xe8\x3d\x32\x7e\xb6\x16\xe1"
      "\xae\xe6\xe5\xce\x83\xf7\x31\x30\x21\x93\x0e\xe4\x15\x3e\x99\xfc\x24\x6d"
      "\x6a\xb0\x3b\x6c\x1c\xdc\x33\x5e\x19\xe6\x90\x80\x75\x25\x94\xb3\xca\x99"
      "\x33\xd2\x61\x55\xd4\xf1\xa7\x1e\x7d\xf1\x8b\x05\xc8\x7f\x6f\x02\xa5\x17"
      "\xe6\x97\xc3\x63\x84\x28\xa7\x59\xce\x2d\x6b\x9c\x32\x72\x56\xa5\x9e\xec"
      "\x2a\xa6\x30\xe8\xdb\x6d\xda\x93\x0a\xcc\xa5\xb8\xfe\xbc\x28\x72\xce\xf9"
      "\x9a\xb6\xe6\x18\x03\xab\x75\x5e\x98\x38\x4c\x02\xef\x30\x1e\xe3\x01\x86"
      "\x2c\xc4\xea\x0f\x12\xba\x41\x76\x2a\xf4\x1f\x64\xd9\x65\xfa\xa4\x5e\xb4"
      "\xe6\xed\x1c\x3d\xde\xea\x93\xc4\xca\x73\xa2\x16\xd7\xfe\xa0\x0c\x3a\xfc"
      "\xb4\xa8\x18\x77\x7d\xb3\xf5\x6a\x8b\x12\x53\x87\xf9\x0f\x87\x45\xeb\x73"
      "\xe8\x7e\x6e\x7c\xf8\xf4\x2f\x12\xc8\x24\xc6\x53\x25\x31\x70\xe7\x19\x02"
      "\xc6\x68\x9c\x66\x09\x33\xff\xaf\x5e\xb0\x94\xb0\x93\x27\xf3\xde\x41\x8a"
      "\xfc\x33\xd2\x3f\xf8\xa7\x0a\x3c\x83\x78\xd6\x1f\x18\x6a\xf1\x6b\x9b\xd2"
      "\x80\x94\x9e\x82\xc8\xc6\x68\x28\x3b\xee\xea\x4a\x78\xf7\x32\xa3\x5d\x43"
      "\xc5\xac\xce\x7e\xc1\xa5\x36\x50\x3f\xf4\x82\xc5\x98\xe4\x51\xe9\x65\x67"
      "\xc3\x7a\x64\x9f\xf6\xbd\x93\x27\x5a\x65\x2a\xb2\xf9\x58\x26\xa2\x49\x7d"
      "\xa8\xdc\xb5\x34\x80\x24\x4e\x56\x87\x9f\xd1\x20\x6e\x70\xf7\xa3\x4c\x2c"
      "\xa4\x49\x63\x3a\x26\x24\x78\x5b\x96\x71\x00\xa6\x16\x56\xce\x7a\x25\x82"
      "\xee\x17\x26\xcb\xf6\x7c\xde\xc5\xab\x23\x8c\x3d\x2d\x6e\x15\x2c\xf0\x8f"
      "\x39\xf4\x28\x78\x93\x32\x83\x42\x0a\x62\xfb\xa7\xb1\x9c\x12\x8b\xb3\x45"
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      "\x8b\xfa\x8b\x9b\xf0\x34\x17\x69\xf1\x2c\x38\x36\x2e\x56\x94\x6c\x09\x36"
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      "\xe7\x89\x5d\xf2\x64\x2d\x32\x03\x76\x70\x3d\xba\x3f\xbe\x75\xff\x3f\x15"
      "\x59\x30\xe5\xcd\x73\x1a\x43\xb9\x72\xba\x61\xfc\xb1\x1d\xf6\x77\xcd\x25"
      "\x8d\x1a\x25\x96\xce\x5d\x4a\x95\xbd\xc2\x56\x33\xec\xc3\x19\xa0\x9e\x5f"
      "\x0b\x69\x7c\x46\xd2\x4b\x8a\xeb\x4e\x7f\xf0\xbd\xdc\x31\xda\x63\x89\x86"
      "\xbb\x75\xbb\x48\x25\xf0\xf1\x12\x8d\xb5\xc4\x95\xdb\x0a\x80\xf3\xda\xce"
      "\x0d\x7e\x7c\x89\xc4\x16\xd4\x20\x31\xc3\xd6\x07\x41\x15\xdc\xce\x4a\xfd"
      "\xff\x42\x43\x12\xa0\x5a\x8d\x1d\x0c\xf9\x0f\xe9\x4e\x9c\x61\x56\x5f\xf1"
      "\xab\xed\x12\xd5\xeb\x24\x26\x4a\x8d\xab\x82\x35\xbf\x12\x10\xd5\xdc\x76"
      "\x76\x8d\x03\x03\xba\xe6\x55\xb6\x58\xb2\x26\xa3\x03\x9d\x51\xec\x3d\x6b"
      "\xce\x5d\xb2\x81\x9c\xcb\xa3\x2d\xed\xd8\x59\x9a\x42\x74\xeb\xf9\xa7\x3a"
      "\x76\xb8\x06\x5a\xf4\x6d\xe0\x9f\x75\xd7\x36\x50\x49\xdf\xe7\xc0\x30\x04"
      "\xd1\x4a\xac\xd5\xee\xc8\xce\x52\x52\xef\xbc\x93\xba\x3d\x7f\x81\xae\x65"
      "\x89\x0c\xfe\xb0\x77\xbe\xbd\xef\xf1\x47\xe6\x39\x9b\x8e\x9c\x65\x53\xcf"
      "\x8e\x54\xa1\xa6\xc1\xee\xb8\x84\x63\x27\x5e\x8a\xa4\x89\x6b\x58\x65\x6a"
      "\x68\xbb\xd5\xfb\x05\x75\xb8\x94\x09\x1a\xd7\xcb\x5f\xb3\x66\xcb\xc2\x9a"
      "\x6b\x57\x6a\x3c\x75\x06\x9d\x8f\xb5\x1e\xf2\xaf\x8f\xea\x44\x87\x16\x7c"
      "\x3b\x78\xad\xcf\x16\xcf\x4c\x45\x09\xba\xe2\xa4\xfb\x0c\x5f\x4c\x84\xf9"
      "\x73\x05\xac\xc6\x59\x3e\xf9\x5b\xb5\xef\x1b\x2d\xb5\x0f\x86\x1f\xec\xab"
      "\x29\x7f\x11\x13\xe9\x79\x19\x2a\x5d\x42\xaa\xc3\x79\x24\x29\x78\xe5\xeb"
      "\x70\xe5\x5e\xa5\xe5\x02\x26\xbe\x03\x90\xdd\x75\x8a\xa3\x54\x0d\x58\xed"
      "\x86\xe7\xbd\x4c\x9a\xcd\x8c\xe4\x49\xaf\xba\xf0\x4f\x33\xde\x0f\x4d\x8a"
      "\x52\x69\xa2\xbb\xa3\x59\xab\xee\x39\xfd\x22\x2f\x5e\x32\xc4\x98\x9c\x46"
      "\xbd\x23\xc1\x70\x20\x57\x27\x3c\x10\xe7\xc4\xc3\xd5\x57\x6e\xd9\x2d\x1f"
      "\xa2\x05\x26\xd4\x00\x2c\x93\x23\xa6\xf9\x04\x78\x2d\x4b\xa3\xcd\xd2\xad"
      "\x14\x99\x56\x9c\xb1\x46\x6a\xf3\xdf\x60\x31\xba\xce\x8f\x6e\x9a\x07\x7e"
      "\x65\x57\xf9\x4c\x3f\xf8\xcc\x01\x5b\x8d\x6a\x82\xf8\x34\x90\x2f\xbf\xe9"
      "\x66\x7c\x24\xfb\xb7\xd2\xaf\x3f\xaf\x7b\x22\xaa\xa0\x32\x3e\xca\xc4\xee"
      "\xac\xa3\xd1\x10\xbe\xdb\xb6\x58\x4e\xc5\x2b\xc7\x85\x5f\xcf\x27\x12\x32"
      "\x66\x8f\x15\x93\xee\x6f\x2a\x84\xab\x39\x44\xa9\xd8\xa0\xeb\x5e\x12\xdf"
      "\xb7\x76\x8d\xb8\x91\x18\x18\x6d\xb8\x7e\x4a\x51\xf9\x8a\x36\x59\x0f\xde"
      "\xa5\xe7\xa6\x35\xb0\x42\xa5\x86\xce\xa1\x29\xa3\xc4\xac\xfe\x9d\x6d\x15"
      "\x4e\x0c\x61\x4a\xe8\x46\x6a\x18\xb4\xf3\x7a\x47\xb5\x8c\x64\x7f\x6e\xc3"
      "\xfb\xcf\x4e\xb9\x28\xea\x05\x08\x43\x26\x0c\xa0\x1f\x3d\x20\xb7\x7a\xe5"
      "\xec\xed\x11\xb5\xf1\x7b\x92\x10\x63\xe1\x2c\xb7\xd5\x91\x4d\xd7\x16\x8e"
      "\xa5\x17\xef\xe7\x56\x9c\x5f\x25\xc0\x9c\xbe\x42\xa6\x37\xa6\x6f\x70\xc8"
      "\x28\x9c\xa7\xf9\xa1\x1e\x49\x4c\xea\x83\x5b\x16\xd4\x48\x0a\x75\xc9\xad"
      "\x6d\x97\x20\x0f\x2c\xf8\xee\x8f\x1c\xc4\x8f\xd7\x5d\x2e\x98\xdb\x79\x97"
      "\xe3\x26\x32\x0b\xa3\xb2\x2d\xfc\x88\x02",
      4096);
  memcpy(
      (void*)0x200000001ac0,
      "\x78\x9c\xec\x98\xb1\x4f\xfa\x40\x14\xc7\xbf\xef\xca\x0f\xf2\x33\x2e\xae"
      "\x2e\x0e\x12\xc5\xc1\xd2\x16\x35\x2e\xc4\xb0\x39\x9a\x88\x1a\x37\x09\x54"
      "\x82\x16\x31\xd0\x41\x98\x74\xf1\xff\x70\x76\x70\x76\xf3\x8f\x30\xce\xea"
      "\x60\x5c\x18\xdd\x4c\x6a\x7a\x3d\xe8\x41\x04\x75\xd0\xc4\xf8\x3e\xc3\xe3"
      "\xfb\xb8\x77\xd7\x77\xaf\xc9\x77\x28\x18\x86\xf9\xb3\x3c\x3e\xbc\xdc\xaf"
      "\x15\xef\x84\x01\x60\x12\x69\xa4\xd4\xff\xcf\x46\x5c\x23\xb4\xfa\xd7\xdb"
      "\xf3\x72\x6b\x6a\x3d\x7f\x39\xf7\x94\xbf\x4e\x35\xae\x86\xcf\x23\x00\x41"
      "\xf0\xf9\xe7\x27\x00\xdc\x14\x0c\xf8\x2a\x0f\x82\xc1\xdd\x69\xf5\x5b\x84"
      "\xe8\xeb\x2d\x08\x2c\x28\xbd\x03\x82\xa9\xf4\x1e\x04\xb6\x95\x76\x41\xd8"
      "\x55\xfa\x40\xd3\x8d\xb0\xde\x34\xf7\x6b\x9e\x6b\x96\x1b\x5e\x25\x14\x56"
      "\x18\xec\x30\x38\x61\xc8\x0d\xf7\xd7\x3d\x23\x54\xb4\xfe\x48\x5b\x6f\xb5"
      "\x3b\x87\x25\xcf\x73\x9b\xdf\x28\x3e\x9a\x5f\xb7\x20\x90\xd7\xfa\xd3\xdf"
      "\x57\x6f\x36\x96\x36\x3f\x1b\x02\xb6\xd2\x39\x10\x36\x95\x5e\x45\xaa\x37"
      "\x9b\x68\x24\xda\xfd\xa7\x13\xf1\xf9\xc6\x0f\xdf\x9f\x05\x0b\x16\xbf\x4d"
      "\xc4\xfe\x14\x5c\x10\xe6\x35\x7f\x4a\x68\xfe\x91\xf5\xeb\xc7\xd9\x56\xbb"
      "\xb3\x58\xab\x97\xaa\x6e\xd5\x3d\x72\x9c\xdc\x8a\xb5\x64\x59\xcb\x4e\x56"
      "\x1a\x51\x14\xc7\xf8\xdf\x7f\xe9\x4f\x13\xda\xf9\xff\x46\xd4\x26\x29\x89"
      "\x93\x92\xef\x37\xed\x28\xf6\x73\x27\x8a\xef\x39\xae\x90\xfe\x27\x90\x99"
      "\x8d\xf2\xd0\xfb\x93\x23\xbb\x89\xd6\x49\xed\x23\xa9\x32\xc6\x98\x72\x86"
      "\x61\x18\x86\x61\x18\x86\x61\x18\x86\x61\x18\x86\x61\x98\x2f\x30\x03\x92"
      "\x5f\x41\x25\x74\x8a\x38\x19\xc0\xd9\x90\xd5\x6f\x01\x00\x00\xff\xff\xda"
      "\x9f\x73\x00",
      381);
  syz_mount_image(
      /*fs=*/0x2000000003c0, /*dir=*/0x200000000880,
      /*flags=MS_I_VERSION|MS_NOSUID|MS_NODEV|MS_MANDLOCK|0x80*/ 0x8000c6,
      /*opts=*/0x200000001c40, /*chdir=*/0, /*size=*/0x17d,
      /*img=*/0x200000001ac0);
  //  mount$overlay arguments: [
  //    src: const = 0x0 (8 bytes)
  //    dst: nil
  //    type: nil
  //    flags: mount_flags = 0x0 (8 bytes)
  //    opts: nil
  //  ]
  syscall(__NR_mount, /*src=*/0ul, /*dst=*/0ul, /*type=*/0ul, /*flags=*/0ul,
          /*opts=*/0ul);
  //  sendmsg$nl_route arguments: [
  //    fd: sock_nl_route (resource)
  //    msg: nil
  //    f: send_flags = 0x8000002 (8 bytes)
  //  ]
  syscall(__NR_sendmsg, /*fd=*/(intptr_t)-1, /*msg=*/0ul, /*f=*/0x8000002ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*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=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}