// https://syzkaller.appspot.com/bug?id=c0e9f2f7a2bb2c5e24d94a1652b546dbcdb25cfd
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.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/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/usb/ch9.h>

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;
}

struct vusb_descriptor {
  uint8_t req_type;
  uint8_t desc_type;
  uint32_t len;
  char data[0];
} __attribute__((packed));

struct vusb_descriptors {
  uint32_t len;
  struct vusb_descriptor* generic;
  struct vusb_descriptor* descs[0];
} __attribute__((packed));

struct vusb_response {
  uint8_t type;
  uint8_t req;
  uint32_t len;
  char data[0];
} __attribute__((packed));

struct vusb_responses {
  uint32_t len;
  struct vusb_response* generic;
  struct vusb_response* resps[0];
} __attribute__((packed));

static bool lookup_control_response(const struct vusb_descriptors* descs,
                                    const struct vusb_responses* resps,
                                    struct usb_ctrlrequest* ctrl,
                                    char** response_data,
                                    uint32_t* response_length)
{
  int descs_num = 0;
  int resps_num = 0;
  if (descs)
    descs_num = (descs->len - offsetof(struct vusb_descriptors, descs)) /
                sizeof(descs->descs[0]);
  if (resps)
    resps_num = (resps->len - offsetof(struct vusb_responses, resps)) /
                sizeof(resps->resps[0]);
  uint8_t req = ctrl->bRequest;
  uint8_t req_type = ctrl->bRequestType & USB_TYPE_MASK;
  uint8_t desc_type = ctrl->wValue >> 8;
  if (req == USB_REQ_GET_DESCRIPTOR) {
    int i;
    for (i = 0; i < descs_num; i++) {
      struct vusb_descriptor* desc = descs->descs[i];
      if (!desc)
        continue;
      if (desc->req_type == req_type && desc->desc_type == desc_type) {
        *response_length = desc->len;
        if (*response_length != 0)
          *response_data = &desc->data[0];
        else
          *response_data = NULL;
        return true;
      }
    }
    if (descs && descs->generic) {
      *response_data = &descs->generic->data[0];
      *response_length = descs->generic->len;
      return true;
    }
  } else {
    int i;
    for (i = 0; i < resps_num; i++) {
      struct vusb_response* resp = resps->resps[i];
      if (!resp)
        continue;
      if (resp->type == req_type && resp->req == req) {
        *response_length = resp->len;
        if (*response_length != 0)
          *response_data = &resp->data[0];
        else
          *response_data = NULL;
        return true;
      }
    }
    if (resps && resps->generic) {
      *response_data = &resps->generic->data[0];
      *response_length = resps->generic->len;
      return true;
    }
  }
  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);
}

static int lookup_interface(int fd, uint8_t bInterfaceNumber,
                            uint8_t bAlternateSetting)
{
  struct usb_device_index* index = lookup_usb_index(fd);
  if (!index)
    return -1;
  for (int i = 0; i < index->ifaces_num; i++) {
    if (index->ifaces[i].bInterfaceNumber == bInterfaceNumber &&
        index->ifaces[i].bAlternateSetting == bAlternateSetting)
      return i;
  }
  return -1;
}

#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);
}

static volatile long syz_usb_control_io(volatile long a0, volatile long a1,
                                        volatile long a2)
{
  int fd = a0;
  const struct vusb_descriptors* descs = (const struct vusb_descriptors*)a1;
  const struct vusb_responses* resps = (const struct vusb_responses*)a2;
  struct usb_raw_control_event event;
  event.inner.type = 0;
  event.inner.length = USB_MAX_PACKET_SIZE;
  int rv = usb_raw_event_fetch(fd, (struct usb_raw_event*)&event);
  if (rv < 0) {
    return rv;
  }
  if (event.inner.type != USB_RAW_EVENT_CONTROL) {
    return -1;
  }
  char* response_data = NULL;
  uint32_t response_length = 0;
  if ((event.ctrl.bRequestType & USB_DIR_IN) && event.ctrl.wLength) {
    if (!lookup_control_response(descs, resps, &event.ctrl, &response_data,
                                 &response_length)) {
      usb_raw_ep0_stall(fd);
      return -1;
    }
  } else {
    if ((event.ctrl.bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD ||
        event.ctrl.bRequest == USB_REQ_SET_INTERFACE) {
      int iface_num = event.ctrl.wIndex;
      int alt_set = event.ctrl.wValue;
      int iface_index = lookup_interface(fd, iface_num, alt_set);
      if (iface_index < 0) {
      } else {
        set_interface(fd, iface_index);
      }
    }
    response_length = event.ctrl.wLength;
  }
  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;
  if ((event.ctrl.bRequestType & USB_DIR_IN) && !event.ctrl.wLength) {
    response_length = USB_MAX_PACKET_SIZE;
  }
  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) && event.ctrl.wLength) {
    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 0;
}

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

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 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++) {
    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 (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  memcpy((void*)0x20001040,
         "\x12\x01\x00\x00\x75\x16\xb7\x10\x8c\x0d\x0e\x00\x8f\x8e\x00\x18\x03"
         "\x01\x09\x02\x1b\x00\x01\x00\x00\x00\x00\x09\x04\x08\x00\x01\x03\x00"
         "\x00\x00\x09\x05",
         38);
  memcpy((void*)0x20001066, "\x8f\xcf\x44\x20\x82\x9e\xf1\x88", 8);
  res = -1;
  res = syz_usb_connect(/*speed=*/0, /*dev_len=*/0x2d, /*dev=*/0x20001040,
                        /*conn_descs=*/0);
  if (res != -1)
    r[0] = res;
  res = -1;
  res = syz_open_dev(/*dev=*/0xc, /*major=*/4, /*minor=*/1);
  if (res != -1)
    r[1] = res;
  syz_usb_control_io(/*fd=*/r[0], /*descs=*/0, /*resps=*/0);
  res = syscall(__NR_dup, /*oldfd=*/r[1]);
  if (res != -1)
    r[2] = res;
  *(uint32_t*)0x20000000 = 0xfc;
  memcpy(
      (void*)0x20000004,
      "\xa2\xe3\xad\x21\xed\x0d\x1b\xf9\x1b\x29\x55\x09\x87\xf7\x0e\x06\xd0\x38"
      "\xe7\xff\x7f\xc6\xe5\x53\x9b\x0d\x3d\x0e\x8b\x08\x9b\x3f\x3b\x09\x6c\x06"
      "\x08\x90\xe0\x87\x8f\x0e\x1a\xc6\xe7\x04\x9b\x09\x6e\x95\x9b\x44\x9a\x24"
      "\x0d\x5b\x67\xf3\x98\x8f\x7e\xf3\x19\x52\x01\x00\xff\xe8\xd1\x78\x70\x8c"
      "\x52\x3c\x92\x1b\x1b\x5b\x31\x07\x0b\x07\x5d\x0d\x36\xcd\x3b\x78\x13\x0d"
      "\xaa\x61\xd8\xe8\x04\x00\x00\x00\x58\x02\xb7\x7f\x07\x22\x72\x27\xb7\xba"
      "\x67\xe0\xe7\x86\x57\xa6\xf5\xc2\xa8\x74\xe6\x2a\x9c\xcd\xc0\xd3\x1a\x0c"
      "\x9f\x31\x8c\x0d\xa1\x99\x3b\xd1\x60\xe2\x33\xdf\x4a\x62\x17\x9c\x6f\x30"
      "\xe0\x65\xcd\x5b\x91\xcd\x0a\xe1\x93\x97\x37\x35\xb3\x6d\x5b\x1b\x63\xdd"
      "\x1c\x00\x30\x5d\x3f\x46\x63\x5e\xb0\x16\xd5\xb1\xdd\xa9\x8e\x2d\x74\x9b"
      "\xe7\xbd\x1d\xf1\xfb\x3b\x23\x1f\xdc\xdb\x50\x75\xa9\xaa\xa1\xb4\x69\xc3"
      "\x09\x00\x00\x00\x00\x00\x00\x00\x75\x27\x1b\x28\x63\x29\xd1\x69\x93\x42"
      "\x88\xfd\x78\x9a\xa3\x7d\x6e\x98\xb2\x24\xfd\x44\xb6\x5b\x31\x33\x4f\xfc"
      "\x55\xcc\x82\xcd\x3a\xc3\x2e\xcd\xb0\x8c\xed\x6f\x90\x81\xb4\xdd\x0d\x8b"
      "\x38\xf3\xcd\x44\x98\xbe\xe8\x00\x49\x08\x41\xbd\xb1\x14\xf6\xb7\x63\x83"
      "\x70\x9d\x8f\x5c\x55\x43\x2a\x90\x9f\xda\x03\x9a\xec\x54\xa1\x23\x6e\x80"
      "\xf6\xa8\xab\xad\xea\x76\x62\x49\x6b\xdd\xbb\x42\xbe\x6b\xfb\x2f\x17\x95"
      "\x9d\x1f\x41\x6e\x56\xc7\x1b\x19\x31\x87\x02\x62\xf5\xe8\x01\x11\x92\x42"
      "\xca\x02\x6b\xfc\x82\x1e\x7e\x7d\xaf\x24\x51\x13\x8e\x64\x5b\xb8\x0c\x61"
      "\x76\x69\x31\x4e\x2f\xbe\x70\xde\x98\xec\x76\xa9\xe4\x0d\xad\x47\xf3\x6f"
      "\xd9\xf7\xd0\xd4\x2a\x4b\x5f\x11\x85\xcc\xdc\xf1\x6f\xf4\x62\x95\xd8\xa0"
      "\xfa\x17\x71\x3c\x58\x02\x63\x09\x33\xa9\xa3\x4a\xf6\x74\xf3\xf3\x9f\xe2"
      "\x34\x91\x23\x7c\x08\x82\x2d\xec\x11\x09\x11\xe8\x93\xd0\xa8\xc4\xf6\x77"
      "\x74\x7a\xbc\x36\x09\x34\xb8\x29\x10\xff\x85\xbf\xd9\x95\x08\x3b\xba\x29"
      "\x87\xa6\x73\x99\xea\xc4\x27\xd1\x45\xd5\x46\xa4\x0b\x9f\x6f\xf1\x4a\xc4"
      "\x88\xec\x13\x0f\x91\x85\x0a\x27\xaf\x95\x44\xae\x15\xa7\xe4\x54\xde\xa0"
      "\x59\x18\xb4\x12\x43\x51\x3f\x00\x00\x00\x00\x00\x00\x00\x0a\x36\x21\xc5"
      "\x6c\xea\x8d\x20\xfa\x91\x1a\x0c\x41\xdb\x6e\xbe\x8c\xac\x64\xf1\x76\x79"
      "\x14\x1d\x54\xb3\x4b\xbc\x99\x63\xac\x4f\x4b\xb3\x30\x96\x03\xf1\xd4\xab"
      "\x96\x62\x03\x86\x1b\x5b\x15\xa8\x41\xf2\xb5\x75\xa8\xbd\x0d\x78\x24\x8e"
      "\xbe\x4d\x9a\x80\x00\x26\x95\x10\x4f\x67\x4c\x24\x31\xdc\xa1\x41\xfa\xe2"
      "\x69\xca\xb7\x0e\x9a\x66\xf3\xc3\xa9\xa6\x3e\x96\x39\xe1\xf5\x9c\x0e\xde"
      "\x26\xc6\xb5\xd7\x4b\x07\x8a\x5e\x15\xc3\x16\x34\xe5\xae\x09\x8c\xe9\xee"
      "\x70\x77\x1a\xaa\x18\x11\x9a\x86\x7e\x10\x88\x33\x49\x75\xe9\xf7\x34\x83"
      "\xb6\xa6\x2f\xa6\x78\xca\x14\xff\xd9\xf9\xdb\x2a\x78\x69\xd8\x58\x64\x05"
      "\x65\x26\xf8\x89\xaf\x43\xa6\x05\x60\x80\x57\x22\x86\x52\x24\x49\xdf\x46"
      "\x6c\x63\x2b\x35\x70\x24\x3f\x98\x9c\xce\x7c\xd9\xf4\x65\xe4\x1e\x61\x0c"
      "\x20\xd8\x04\x21\xd6\x53\xa5\x52\x00\x00\x00\x82\x13\xb7\x04\xc7\xfb\x08"
      "\x2f\xf2\x75\x90\x67\x8e\xf9\xf1\x90\xba\xe9\x79\x09\x50\x70\x41\xd8\x60"
      "\x42\x0c\x56\x64\xb2\x79\x21\xb1\x4d\xc1\xdb\x88\x92\xfd\x32\xd0\xad\x7b"
      "\xc9\x46\x81\x35\x91\xad\x8d\xef\xf4\xb0\x5f\x60\xce\xa0\xda\x77\x10\xac"
      "\x00\x00\x00\x00\x00\x00\x80\x00\xbe\xa3\x7c\xe0\xd0\xd4\xaa\x20\x2f\x92"
      "\x8f\x28\x38\x1a\xab\x14\x4a\x5d\x42\x9a\x04\xa6\xa2\xb8\x3c\x70\x68\xae"
      "\x94\x9e\xd0\x6e\x28\x8e\x81\x0b\xac\x9c\x76\x60\x00\x25\xe1\x9c\x90\x7f"
      "\x8e\xa2\xe2\x01\x00\x00\x00\x82\x71\xa1\xf5\xf8\x52\x8f\x22\x7e\x79\xc1"
      "\x38\x9d\xbd\xff\xfe\x49\x2f\x21\x57\x9d\x2c\x15\xb8\xc7\x0c\xdb\x1c\x33"
      "\x2d\x86\xd8\x73\x41\x43\x27\x50\x86\x1e\xc2\xbc\x34\x51\xed\xca\x19\x4b"
      "\x22\x1c\xfe\xc4\x60\x3d\x27\x6b\xba\xa1\xdf\xa6\xd4\xfb\x8a\x48\xa7\x6e"
      "\xaf\xc9\xa9\xa0\x27\x0e\x4c\x10\xd6\x4c\xd5\xa6\x24\x27\x26\x4f\x40\x77"
      "\xfe\x76\x3c\x43\x47\x08\x33\xac\x96\xc4\x5f\x35\x7c\xbb\xab\xa8\xf1\xb1"
      "\xfd\xcc\x7c\xbb\x61\xa7\xcd\xb9\x74\x4e\xd7\xf9\x12\x9a\xed\xe2\xbe\x21"
      "\xcc\xfd\xc4\xe9\x13\x4f\x86\x84\xb3\xa4\xf3\x54\xda\x9a\x79\x5e\x96\x33"
      "\x4e\x20\x7d\xff\x70\xf1\x98\x80\x37\xb2\xed\x3a\xaf\x57\x5c\x0b\x88\xd8"
      "\xf1\x46\x68\x40\x78\x41\x6d\x59\xfd\xee\x53\x25\x92\x89\x74\xd1\x2d\xad"
      "\x99\xda\xc4\x4c\x3f\x00\x08\x04\x70\x96\xa4\x40\x02\xbe\xbc\x24\x20\xae"
      "\xd9\x2f\xa9\xb6\x57\x8b\x47\x79\x41\x5d\x4a\xc0\x1b\x75\xd5\x49\x5c\x11"
      "\x80\x45\x65\x1c\xf4\x1c\x2f\xc4\x8b\x77\x8e\xfa\x5e\xa5\x67\x77\x47\x43"
      "\x0a\xf4\x16\x2b\x98\x7b\x80\xc3\xe0\x01\xcd\x34\xe5\xc9\x2f\x76\xcc\x4c"
      "\x24\xee\xb8\xbc\x4e\x9a\xc2\xae\xd9\xe5\x38\x03\xed\x0c\xa4\xae\x3a\x97"
      "\x37\xd2\x14\x06\x00\x05\xea\x6f\x17\x83\xe2\x87\xb3\xbe\xe9\x6e\x3a\x72"
      "\x6e\xaf\xe2\xfd\xfa\xa7\x8d\x1f\x48\xc1\x3b\x64\xdf\x07\x84\x77\x54\xb8"
      "\x40\x0d\xaa\xa6\x9b\xf5\xc8\xf4\x35\x0a\xea\xe9\xca\x12\x07\xe7\x82\x83"
      "\xcd\x0b\x20\xce\xb3\x60\xc7\xe6\x58\x82\x81\x63\xe2\xd2\x5c\x4a\xa3\x48"
      "\x56\x1f\x92\x7e\x88\xf6\x3a\xa7\x0e\x73\xa5\xe6\x9b\x3d\xf3\x49\x59\x03"
      "\xf0\x65\x72\xe1\xe0\x07\xfa\x55\xa2\x99\x9f\x59\x6d\x06\x73\x12\xf5\x77"
      "\x9e\x8d\xbf\xdc\xf3\x42\x71\x38\xf3\xd4\x44\xd2\x63\x9a\x10\x47\x7f\x9b"
      "\xec\x4b\x0b\xbb\x6e\x3c\x04\xbe\x68\x98\x1f\x39\x22\x03\xdd\x0e\xe3\xef"
      "\x47\x8e\x16\xda\xcf\xc5\xe3\xe0\x3c\xf7\xab\x8e\x39\x02\xf1\xb0\xff\x03"
      "\x4e\xf6\x55\xb2\x53\xca\x50\x93\x83\x81\x5b\x1b\x6f\xc6\x52\x2d\x4e\x4f"
      "\xdc\x11\xa4\x8c\xf4\x2d\x48\x60\x46\x75\xfd\xe2\xb9\x4c\xf0\x05\x00\xa2"
      "\x69\x08\x91\xab\xf8\xab\x9c\x01\x50\x73\x01\x4d\x9e\x08\xd4\x33\x8b\x87"
      "\x80\xbd\xec\xd4\x36\xcf\x05\x41\x35\x9b\xaf\xff\xa4\x52\x37\xf1\x04\xb9"
      "\x62\x10\x40\x3b\x2d\xe9\xef\xed\x49\x6f\x42\x35\x5b\xc7\x87\x2c\x82\x74"
      "\x67\xcf\xa5\xc4\xe7\x27\x30\xd5\x6b\xd0\x68\xed\x21\x1c\xf8\x47\x53\x5e"
      "\xde\xcb\x7b\x37\x3f\x78\xb0\x95\xb6\x84\x41\xa3\x4c\xb5\x16\x82\xa8\xae"
      "\x4d\x24\xad\x04\x65\xf3\x92\x7f\x88\x9b\x81\x30\x76\x03\x8e\x79\xa7\x96"
      "\x2f\xb3\x85\xa8\x1a\xa1\x02\x0f\x06\xc4\xc2\xba\x1d\xd5\xca\xc7\xc1\x88"
      "\x76\xda\x86\x5d\x25\x87\x34\xdd\x73\x58\x3d\xf2\x92\x89\x24\x48\x03\x9e"
      "\xf7\x99\xcf\x06\x30\xbe\xcd\xcc\xe0\x45\x79\xb5\x56\x1d\xc8\x25\xab\x82"
      "\x98\x27\x94\x5e\x02\x0c\x1f\x67\xee\x61\x5f\xeb\x62\x43\x37\x8e\x06\x10"
      "\x06\x0f\x02\xcc\xa4\xe9\x1b\x2f\x00\x1e\xdb\x3d\x78\xfb\x4b\x55\x66\x8d"
      "\xda\x93\xae\xc9\x2a\x5d\xe2\x03\x71\x7a\xa4\x9c\x2d\x28\x4a\xcf\xab\xe2"
      "\x62\xfc\xcf\xcb\xb2\xb7\x5a\x21\x83\xc4\x6e\xb6\x5c\xa8\x10\x4e\x1b\x4d"
      "\xa7\xfb\xb7\x7a\xb2\xfc\x04\x3a\xea\xd8\x7c\x32\xab\x87\x5e\xe7\xc2\xe7"
      "\xb7\x01\x9c\x98\x2c\xd3\xb4\x3e\xae\xb1\xa5\xfb\x13\x5c\x0c\x7d\xce\xe8"
      "\xfe\x65\x16\xa3\x28\x03\x2f\x88\xc0\x42\x89\x18\x24\x65\x9e\x9e\x94\x26"
      "\x5c\x80\x3b\x35\xee\x5f\x83\xa2\xb2\x10\x52\x01\x06\x89\xaf\x9c\x25\x1f"
      "\xe5\x29\x4b\x3d\x18\x02\xd5\x67\x6d\x95\xf1\x60\xec\x97\xb1\xad\x94\x87"
      "\x2c\xb2\x04\x46\x42\xc3\x7b\x4a\x6c\xc6\xc0\x4e\xff\xc1\x67\x2d\xb7\xe4"
      "\xb6\x8d\x78\x7d\x9a\x7a\x50\x8a\xe5\x4b\x3c\xd7\x36\x9d\xde\x50\xe8\xc7"
      "\x7d\x95\xa3\xd3\x61\xc0\x40\xba\xbb\x17\x16\x07\xca\xac\x2a\x35\x59\xad"
      "\x4f\x75\x46\x5f\x49\xc0\xd0\xae\x37\x16\xdb\x6e\x00\xcb\x11\xdb\x4a\x5f"
      "\xad\xe2\xa5\x7c\x10\x23\x8e\x20\x4a\x67\x73\x7c\x3b\x42\xaa\xe5\x01\xb2"
      "\x0f\x76\x94\xa0\x0f\x16\xe2\xd0\x17\x40\x35\xa2\xc2\x26\x56\xdc\x29\x88"
      "\x0a\xce\xbd\xbe\x8d\xdb\xd7\x5c\x2f\x99\x8d\x8a\xc2\xdf\xad\x2b\xa3\xa5"
      "\x04\x76\x7b\x6b\x45\xa4\x59\x57\xf2\x4d\x75\x8e\xd0\x24\xb3\x84\x9c\x11"
      "\xd4\x12\xa2\xa0\x3b\x40\x47\x49\x70\x22\xd9\xc3\x0e\x23\xef\x4d\xf5\xc8"
      "\x96\x44\xf4\x8b\xb5\x36\xf7\x94\x5b\x59\xd7\xbc\xdd\xff\x75\x44\x13\xd1"
      "\x35\x27\x3e\xa8\xe7\x5f\x22\xf2\x16\xc6\xb9\x99\x0a\xe7\x18\x06\xf2\xc0"
      "\x0b\x40\x25\xc4\x8b\x75\xc0\xf7\x3c\xdb\x9a\x7b\x8f\xa3\x67\xb5\x00\x28"
      "\x06\x7e\x7f\x16\xf4\xdd\x56\x9d\x46\x2f\x4f\x19\xea\xcd\xb3\xed\x70\xee"
      "\xeb\xb4\x48\x3f\x8f\xd7\x77\xd4\x43\xe8\xb4\x04\x27\xdb\x6f\xe2\x90\x68"
      "\xc0\xca\x3d\x24\x14\x44\x2e\x8f\x3a\x15\x47\x04\xb0\xe5\x1b\xc6\x64\xa1"
      "\x37\xb2\x6b\xe7\x19\xf4\xf7\xc9\xa5\x67\x8a\x67\x4d\xfc\x95\xdf\x80\xb9"
      "\xce\x37\x5d\xd6\x49\xc8\xc7\x04\xe5\x09\xbd\x88\xc8\xe6\x3d\x8c\x7d\xd6"
      "\x70\x71\x11\x5c\x89\x82\xba\x46\xaf\x4d\x6a\xdc\xc9\xf6\x8a\x75\xb9\x39"
      "\x7b\x03\x51\x53\xfa\xe4\x63\x66\xe7\x20\x5d\xd8\xd6\xf3\x75\x25\xc1\xa0"
      "\xe9\x46\x10\xdd\x94\x32\x3f\x6c\x15\xd0\x85\x19\x71\x49\xbf\xd6\x65\x55"
      "\x48\xcf\xd9\xc5\x2c\x97\x11\x93\x7f\x79\xab\xb1\xa1\x24\xf1\x21\x04\x65"
      "\x48\x3c\xd3\xb2\xd7\x83\x78\xcf\xb8\x5e\xd8\x2e\x7d\xa0\xf6\xeb\x6d\x27"
      "\x9f\x2a\xe4\x55\x92\x5d\x0f\x6f\x1b\xa5\x71\xeb\xa2\x81\xf2\xa6\x54\xfb"
      "\x39\xdd\xff\x3b\x48\x44\x39\xff\x15\x8e\x7c\x54\x19\xe0\x37\xf3\xe3\xad"
      "\x03\x8f\x22\x11\xf1\x03\x31\x95\x56\x3c\x7f\x93\xcd\x54\xb9\x09\x4f\x22"
      "\x6e\x78\x32\x71\xe1\xe5\xa2\xa2\xc1\x07\x12\xea\xb6\x25\xd6\x49\x31\xcd"
      "\x4f\xfe\x67\x38\xd9\x7b\x9b\x5e\xf8\x28\xee\x9f\xb0\x59\xfc\x01\xaf\x0e"
      "\x79\xc1\xe1\x4b\x1d\x25\x98\x8c\x69\xa3\x99\x56\x7c\x1d\x93\x76\x8f\x79"
      "\x71\xd3\x14\x88\xb8\x65\x8a\x20\x87\x8b\x7c\x1d\xd7\xba\x02\xfc\x42\x93"
      "\x9d\xde\x3d\x4a\x33\x39\xa6\x5d\x50\x7d\xc5\x9c\x51\x09\x7b\x40\x51\x77"
      "\x05\xda\x56\xe9\xeb\xf0\xaf\xa5\x32\x82\xbf\x86\xdb\xb5\x8c\x54\x80\x69"
      "\xff\x6e\xb9\x5a\xad\xe7\xcc\x66\xd7\xbb\xef\x72\x47\x79\xca\x1f\x73\x1b"
      "\x33\x46\xff\x17\x70\x50\x37\x3d\x79\xff\x7b\x3e\x7f\x9b\xc0\xc1\xb4\xb2"
      "\x66\xa8\x87\x8b\x90\xba\xaa\x03\x9d\x3e\x3b\x63\x97\x9a\xc3\xdf\x6e\x6f"
      "\x48\x59\xaf\xd5\x02\x38\xc7\x54\x7a\x39\xb6\x08\x10\x93\x80\x44\xae\x18"
      "\x5d\x2b\xa3\xe0\x0a\x4e\x73\x67\x68\x64\xae\x09\x0d\x81\xea\xee\x5e\xe6"
      "\xcf\x1d\x0a\xb3\x78\xdd\x4d\xd8\x91\xe9\x37\xc2\xea\x54\x10\xe0\x51\x30"
      "\x05\x00\x00\x00\x00\x00\x00\x00\x39\x11\xfa\xb9\x64\xc2\x71\x55\x00\x27"
      "\x69\x7b\x52\x16\x06\x87\x46\x16\x02\xf8\x8d\xf1\x65\xd8\x84\xb3\x6e\xc2"
      "\xb6\xc2\x5a\x2f\x33\xc7\x15\x68\x7e\x9d\x4a\xfb\x96\xd6\x86\x1a\xca\x47"
      "\xda\x73\xd6\xf3\x14\x43\x45\xf4\x88\x43\xdd\x01\x4e\x5c\x5a\xd8\xfe\x99"
      "\x57\x54\xbd\x9c\xf3\x2f\xce\x1e\x31\x91\x9c\x4b\x20\x82\xfb\x0a\x30\xb9"
      "\xde\xae\x84\xbe\xd4\xb2\x80\x45\x63\x40\x73\xc9\xc5\x8c\x89\xd9\xe9\x9c"
      "\x81\x76\x91\x77\xc6\xd5\x94\xf8\x8a\x4f\xac\xfd\x4c\x73\x5a\x20\x30\x7c"
      "\x73\x7a\xfa\x2d\x60\x39\x94\x73\x29\x6b\x83\x1d\xbd\x93\x3d\x93\x99\x4b"
      "\xa3\x06\x42\x79\xb1\x0e\xa0\xc5\x83\x3f\x41\xf1\x57\xea\x23\x02\x99\x3d"
      "\xbe\x43\x3b\x1a\xa3\xa3\x76\x6d\x54\x39\x02\x04\x84\xf4\x11\x3c\x4c\x85"
      "\x94\x65\xc3\xb4\x15\xc3\x43\xf7\xf1\x40\xf3\x19\x53\x9d\x5b\xf3\x72\xaa"
      "\xae\xa1\xcc\x43\xa6\xc5\xcb\xe5\x97\x58\xbf\xee\x29\x16\x58\x0d\xac\x4b"
      "\x00\x8e\x59\x5f\x43\x74\x91\xd8\x7a\xbe\xd0\x2c\xef\xcd\x9d\xb5\x3d\x94"
      "\xd0\x2d\xae\xe6\x79\x18\xe5\xd6\x78\x74\x63\x18\x3b\x4b\x87\xc1\x05\x00"
      "\x00\x00\x2f\x78\x09\x95\x9b\xc0\x48\x85\x06\x13\xd1\x7c\xa5\x10\x55\xf2"
      "\xf4\x16\xa4\x4f\xe1\x80\xd2\xd5\x0c\x31\x2c\xca\x7c\xb1\x4a\x2b\xdc\x33"
      "\x1f\x57\xa9\x81\x71\x39\xa2\x06\xfc\x76\x95\x72\x27\xff\xff\x2d\xe2\x0a"
      "\x4b\x8e\x37\x37\xfb\xb4\x29\x13\x77\x7c\x06\x37\x6f\x79\x9e\xba\x36\x7e"
      "\x21\xf9\x4c\xa5\x98\x70\x5f\x5d\xcb\x76\x7d\x6f\x09\x00\xd6\xb0\xf6\x09"
      "\x5e\x53\xc4\xc4\x23\x4d\x0c\x1f\xbe\x43\x4f\x6a\xb8\xf4\x3c\x00\x13\xee"
      "\x93\xb8\x39\x46\xee\x77\x59\xe8\x9d\x7b\xdd\x1a\x32\xd7\xb3\x11\x71\x1b"
      "\x75\x7f\xe4\x3c\x06\xd2\x1a\x35\x81\x0d\x8f\xe9\x8b\x27\xfa\xea\x8a\xa1"
      "\x2b\xc8\x71\x6e\xef\xc5\xc9\x7c\x45\xac\x33\xee\xec\x96\x4c\x52\x14\xbc"
      "\x3a\x93\x59\xbd\xea\x1c\xcc\xab\x94\xf1\x5e\x36\x31\x9c\xb3\x4e\xbc\xac"
      "\xed\xb8\x2c\x2e\xd3\xde\x5a\x8a\x8f\x00\x11\xe8\xf7\x4e\x82\xd7\xf9\x60"
      "\x93\x53\x0e\x76\x69\x28\x39\xd7\x96\x19\x39\xad\xfd\xee\xea\xff\x19\xd1"
      "\x1e\xfc\xaf\xb6\xd5\x46\xfe\xf2\x71\xe8\x9d\x6c\xc2\x38\x9e\x81\xff\x58"
      "\xce\xfc\xce\x3f\xbf\x46\x25\xa7\xe7\xde\x40\xe4\x2e\x07\xb3\x44\x49\xe1"
      "\x5e\x06\x5c\xc7\x34\x00\x02\x00\x00\x00\x00\x00\x00\xf2\x88\xa4\x51\x0d"
      "\xe0\x3d\xab\x19\xd2\x62\x85\xed\xa8\x91\x56\xd5\x0d\xd3\x85\xa6\x03\x33"
      "\xba\x5b\xbf\x5d\x77\xcd\x70\x07\xad\x15\x19\xad\x54\x70\xde\x3d\xd6\xd6"
      "\x08\x0c\xaf\xcc\xf8\xa9\x74\x06\xbb\x6b\x68\xa1\xf0\xc4\x54\x98\x20\xa7"
      "\x3c\x88\x0f\x47\x5f\x73\x2a\xe0\x03\x98\xe8\xbd\x1f\x41\x08\xb7\x80\x7f"
      "\xb3\x3b\x72\x68\x5e\xc3\x7a\x2d\x3f\x76\x64\x13\xa6\x04\x59\x51\x62\x46"
      "\xe5\xa1\xd9\x98\xa2\x01\x7a\xef\x09\x48\xa6\x8c\xf2\x55\x31\x5a\xb8\x0d"
      "\xd3\x49\xe8\x91\xae\xf5\x95\xdc\x4d\x47\x0e\x8a\xc3\x2a\x30\x8e\x15\xfc"
      "\x37\xd0\x6a\xea\xc2\x89\xc0\x52\x3f\x48\x3e\x1f\xf7\x40\x8c\x60\x87\xf1"
      "\xab\x65\x2f\x2e\xf9\x1d\x4f\x2b\x01\x98\x7b\x0f\x46\xda\x03\x4e\x5c\x3f"
      "\x74\x5a\x7e\xe8\x10\x1a\x39\x34\xc5\x4e\x24\xb4\x8e\xc0\x27\x5e\x2d\x06"
      "\x87\xdc\x74\x6b\x08\x27\xcb\xf6\x52\xf4\x06\xc6\xb9\x5f\x27\x22\xe5\x8c"
      "\x05\xf7\x52\xce\x21\x26\x59\x6e\x1c\xd7\x65\x5b\x90\x48\x01\x78\x4c\x41"
      "\x6b\x22\xf7\x3d\x32\x46\x78\xe2\x72\x4f\x43\xf1\xfe\x68\x7c\x7e\x8a\x60"
      "\xc2\x8b\x82\xb6\x52\x83\x41\xb6\x48\xcd\xd5\x6f\xed\x7c\xdc\xbb\x15\x75"
      "\x91\x2d\x5e\xcd\x36\xde\xa3\xbc\xa0\xb7\x42\x7d\x83\x92\xc6\x28\x94\x55"
      "\xe8\xf8\xd2\xab\x22\x42\x72\x92\x51\xae\x03\x3a\x9e\x02\x21\x0e\x62\xdf"
      "\x05\x46\xa7\x4b\x33\x3a\x1c\x48\xf9\x5f\xd5\x4a\xcb\x57\x41\x25\x9e\x8c"
      "\x54\x88\xef\xee\xe3\x27\x41\x5c\xc1\x94\x51\x43\x2c\x6f\x14\xc2\x76\x93"
      "\x10\x2a\x3c\xd8\x48\x57\xcd\x65\x86\xfc\x5c\xa9\xa9\x3e\xb0\x14\x5f\xac"
      "\x06\x62\xff\x86\x10\x7f\x99\x8a\x8e\xf7\xdf\x8a\xa1\x40\x46\xc5\x5b\x03"
      "\xd3\xd4\x7f\x88\xa8\xd6\x0f\x77\x74\xa2\xee\x08\x75\x88\x97\xfb\x41\x1a"
      "\x94\xb3\xc2\xfc\x5d\x5f\x0d\xb4\x2c\x04\x56\xec\x01\x5f\x08\xe5\x24\x7d"
      "\x33\xae\x2d\x35\x60\x3f\xf8\x45\x4c\x16\xf8\x34\x28\x56\x93\x51\x25\x10"
      "\x2b\xb7\x84\xed\x71\x48\xb6\xce\x43\x1b\x63\xee\x35\x6b\x0c\x78\x5f\x2f"
      "\x47\xb9\x0e\x29\x38\x9f\x22\xfc\x5b\x59\xa7\x0e\xfa\xea\x2b\xd4\x01\x95"
      "\xaf\x44\x86\x22\x0d\x70\x2e\x30\xbf\xc4\x3c\x10\xec\x23\xea\x62\x83\x99"
      "\x4a\x7d\xde\x4d\xcb\x61\xfe\xa6\xb6\x51\xfb\x1d\x62\x45\x8d\x07\x41\xa1"
      "\x28\x30\x05\x2f\xcc\x46\x0d\xb0\x43\xaf\xe5\x25\x62\x9b\x40\xd7\xce\xe4"
      "\x58\xe4\xcb\x5e\x93\x0e\xd6\x24\x80\x6c\x43\xa0\x06\xe3\x93\x36\xd0\x7c"
      "\x2b\x80\x81\xc1\x28\xad\x27\x06\xf4\x82\x61\xf7\x89\x74\x84\xc2\x97\xa1"
      "\xa6\x61\x3b\xc1\x8f\x5a\x38\xd4\x42\x76\x8a\xf3\x80\x41\xef\xe0\x3d\x15"
      "\x2e\xf9\x5f\xf5\x69\xe7\x6d\xb2\x39\x1f\x45\x09\xd7\xf3\x39\xd9\x2f\xdb"
      "\x4a\x89\x36\x49\x49\xda\x39\x80\x00\x00\x00\x00\x00\x00\x00\xd8\x0a\x4f"
      "\xe6\x54\x57\x83\x76\xe5\x99\xaf\xf3\x56\x5b\x1d\x53\x1f\x30\x91\x2b\x99"
      "\x45\x03\x0b\x81\xea\x99\x35\xfd\x46\xed\xb4\x4a\x78\xf6\x15\x25\x54\x90"
      "\xa4\xb6\x21\x50\x1f\x2a\x9e\x4d\x24\x62\x4c\x4d\xac\x92\x74\x11\x8c\x67"
      "\x58\x4f\x5d\x37\x47\x55\x53\x4d\x7f\x68\xf6\x79\xc4\xff\x51\x6a\x9c\x86"
      "\x1a\x0e\x7e\x65\x86\x8f\xcb\x2b\xf1\xcb\x9a\xea\x4e\x05\xdf\x72\x27\x9f"
      "\xdb\x0d\x2b\x9e\x93\x5c\x5a\xf3\xcf\x47\x4b\x06\x79\xdf\xc2\x48\xc1\xf5"
      "\xae\xa4\xb8\xb3\x2c\x5d\x29\x5e\x57\x07\x9d\x0f\xe6\x62\xa4\x6b\x7f\x71"
      "\xcd\x47\x74\x4d\xb8\x6c\x50\xb7\x04\xc9\x71\xd9\x02\x95\xc7\xb2\xc7\x43"
      "\x9a\x2d\x78\xcc\xfa\x79\xb5\xfc\x2b\xff\x6b\xbf\x84\x02\x62\xbf\x89\x39"
      "\x4b\x3e\x06\x91\x95\x12\x64\xd2\x70\x0c\x83\x8f\xa2\xc7\xb3\x42\x52\x60"
      "\xf5\x95\x54\xe5\x02\xdc\xea\x39\xcb\x31\x3b\x00\x00\x00\x00\x00\x00\x4c"
      "\xa7\xc1\x2f\x45\x85\x8d\x62\x84\xca\x62\x70\xd6\xb2\xf0\xe5\x8f\xde\xd8"
      "\xa7\xb4\xa3\x02\xa9\x7b\xc6\x41\xdf\x07\x72\x0b\xa2\xb2\x6b\xbf\xcc\x80"
      "\x7c\xa0\xab\xb1\xb4\x43\x22\x26\x9c\x21\xc5\xec\x68\xcb\x06\x8e\xa8\x80"
      "\x67\xd9\x05\xea\x91\x7b\xb0\x3e\xef\xda\xeb\xde\xab\xf2\xd0\xdc\xe8\x09"
      "\x97\xc9\x15\xc8\x94\x9d\xe9\x92\x58\x7c\x2c\xb5\xfe\x36\xd7\xd3\xe5\xdb"
      "\x21\xb0\x94\xb8\xb7\x79\x40\xb5\xf0\x77\x22\xe4\x7a\x08\xd3\x67\xe5\xf8"
      "\x4c\x96\xec\x66\x4b\x72\x93\x4b\x99\xb3\x10\x9a\xf6\x5d\x77\xe8\x6a\xbd"
      "\x68\x59\xcd\xdf\x4b\xba\xe1\xf0\x93\x04\x62\xdf\x15\xfd\xdb\xc4\x85\x62"
      "\xea\x35\x11\xa8\x06\x5e\xf0\x28\xcf\x12\xf1\x4d\xcf\x6e\xbe\xcd\x8d\x98"
      "\x48\x36\x17\x4f\xaf\x1a\xa6\x09\xe5\xf1\xee\x11\x62\xdf\xa1\x3b\xdc\x1f"
      "\xa7\xcf\xaa\xdb\xa8\x5c\x72\xe9\x75\x8f\x03\xa7\x05\x00\xbe\x53\xf8\xd2"
      "\xa1\xdf\xb1\xc6\x8c\xc1\x64\xb0\xa0\x78\x0d\x97\x1a\x96\xea\x2c\x4d\x4c"
      "\xa0\x39\x8c\x22\x35\x98\x0a\x93\x07\xb3\xd5\xbd\x3b\x01\xfa\xff\xd0\xa5"
      "\xdb\xed\x28\x81\xa9\x70\x0a\xf5\x61\xac\x8c\x6b\x00\x00\x00\x00\x00\x00"
      "\x00\xf9\x6f\x06\x81\x7f\xb9\x03\x72\x9a\x7d\xb6\xff\x95\x76\x97\xc9\xed"
      "\xe7\x88\x5d\x94\xff\xb0\x96\x9b\xe0\xda\xf6\x0a\xf9\x31\x09\xeb\x1d\xee"
      "\x72\xe4\x36\x3f\x51\xaf\x62\xaf\x6f\xb2\xa6\xdf\x3b\xec\x89\x82\x2a\x7a"
      "\x0b\x67\x80\x58\xfa\x3f\xef\x86\xfa\xec\x21\x6e\xb6\x99\x21\x62\xf8\xdc"
      "\xbf\x71\x9c\x14\x8c\xd2\xf9\xc5\x5f\x49\x01\x20\x3a\x9a\x8a\x2c\x3e\x90"
      "\xf3\x94\x3d\xbc\x10\x36\x0a\x1a\x49\x70\x0d\x1d\xfb\xf6\x6d\x69\xf6\xfb"
      "\xaf\x50\x6c\x8b\xcc\xe8\xbb\x0d\x87\x2a\x02\x23\x89\x26\x40\x7a\x4e\xdd"
      "\xd5\xd0\xfc\x5a\x75\x2f\x90\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
      4096);
  *(uint16_t*)0x20001004 = 0x8f5;
  syscall(__NR_write, /*fd=*/r[2], /*data=*/0x20000000ul, /*len=*/0x1006ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  loop();
  return 0;
}