// https://syzkaller.appspot.com/bug?id=cabffad18eb74197f84871802fd2c5117b61febf
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

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

#include <linux/usb/ch9.h>

static unsigned long long procid;

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

#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 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;
}

static struct usb_device_index* lookup_usb_index(int fd)
{
  int i;
  for (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;
}

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,
                           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) {
          struct usb_qualifier_descriptor* qual =
              (struct usb_qualifier_descriptor*)response_data;
          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_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);

#define ATH9K_FIRMWARE_DOWNLOAD 0x30
#define ATH9K_FIRMWARE_DOWNLOAD_COMP 0x31

static bool lookup_connect_response_out_ath9k(
    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:
      return true;
    default:
      break;
    }
    break;
  case USB_TYPE_VENDOR:
    switch (ctrl->bRequest) {
    case ATH9K_FIRMWARE_DOWNLOAD:
      return true;
    case ATH9K_FIRMWARE_DOWNLOAD_COMP:
      *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_event_fetch(int fd, struct usb_raw_event* event)
{
  return ioctl(fd, USB_RAW_IOCTL_EVENT_FETCH, event);
}

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_ep_write(int fd, struct usb_raw_ep_io* io)
{
  return ioctl(fd, USB_RAW_IOCTL_EP_WRITE, io);
}

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_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_stall(int fd)
{
  return ioctl(fd, USB_RAW_IOCTL_EP0_STALL, 0);
}

static int lookup_endpoint(int fd, uint8_t bEndpointAddress)
{
  struct usb_device_index* index = lookup_usb_index(fd);
  int ep;
  if (!index)
    return -1;
  if (index->iface_cur < 0)
    return -1;
  for (ep = 0; index->ifaces[index->iface_cur].eps_num; ep++)
    if (index->ifaces[index->iface_cur].eps[ep].desc.bEndpointAddress ==
        bEndpointAddress)
      return index->ifaces[index->iface_cur].eps[ep].handle;
  return -1;
}

static void set_interface(int fd, int n)
{
  struct usb_device_index* index = lookup_usb_index(fd);
  int ep;
  if (!index)
    return;
  if (index->iface_cur >= 0 && index->iface_cur < index->ifaces_num) {
    for (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 (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;
}

#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 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;
    if (event.ctrl.bRequestType & USB_DIR_IN) {
      if (!lookup_connect_response_in(fd, descs, &event.ctrl, &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_ath9k(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_ath9k);
}

static volatile long syz_usb_ep_write(volatile long a0, volatile long a1,
                                      volatile long a2, volatile long a3)
{
  int fd = a0;
  uint8_t ep = a1;
  uint32_t len = a2;
  char* data = (char*)a3;
  int ep_handle = lookup_endpoint(fd, ep);
  if (ep_handle < 0) {
    return -1;
  }
  struct usb_raw_ep_io_data io_data;
  io_data.inner.ep = ep_handle;
  io_data.inner.flags = 0;
  if (len > sizeof(io_data.data))
    len = sizeof(io_data.data);
  io_data.inner.length = len;
  memcpy(&io_data.data[0], data, len);
  int rv = usb_raw_ep_write(fd, (struct usb_raw_ep_io*)&io_data);
  if (rv < 0) {
    return rv;
  }
  sleep_ms(200);
  return 0;
}

uint64_t r[1] = {0xffffffffffffffff};

int main(void)
{
  syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  intptr_t res = 0;
  *(uint8_t*)0x20000000 = 0x12;
  *(uint8_t*)0x20000001 = 1;
  *(uint16_t*)0x20000002 = 0x200;
  *(uint8_t*)0x20000004 = -1;
  *(uint8_t*)0x20000005 = -1;
  *(uint8_t*)0x20000006 = -1;
  *(uint8_t*)0x20000007 = 0x40;
  *(uint16_t*)0x20000008 = 0xcf3;
  *(uint16_t*)0x2000000a = 0x9271;
  *(uint16_t*)0x2000000c = 0x108;
  *(uint8_t*)0x2000000e = 1;
  *(uint8_t*)0x2000000f = 2;
  *(uint8_t*)0x20000010 = 3;
  *(uint8_t*)0x20000011 = 1;
  *(uint8_t*)0x20000012 = 9;
  *(uint8_t*)0x20000013 = 2;
  *(uint16_t*)0x20000014 = 0x48;
  *(uint8_t*)0x20000016 = 1;
  *(uint8_t*)0x20000017 = 1;
  *(uint8_t*)0x20000018 = 0;
  *(uint8_t*)0x20000019 = 0x80;
  *(uint8_t*)0x2000001a = 0xfa;
  *(uint8_t*)0x2000001b = 9;
  *(uint8_t*)0x2000001c = 4;
  *(uint8_t*)0x2000001d = 0;
  *(uint8_t*)0x2000001e = 0;
  *(uint8_t*)0x2000001f = 6;
  *(uint8_t*)0x20000020 = -1;
  *(uint8_t*)0x20000021 = 0;
  *(uint8_t*)0x20000022 = 0;
  *(uint8_t*)0x20000023 = 0;
  *(uint8_t*)0x20000024 = 9;
  *(uint8_t*)0x20000025 = 5;
  *(uint8_t*)0x20000026 = 1;
  *(uint8_t*)0x20000027 = 2;
  *(uint16_t*)0x20000028 = 0x200;
  *(uint8_t*)0x2000002a = 0;
  *(uint8_t*)0x2000002b = 0;
  *(uint8_t*)0x2000002c = 0;
  *(uint8_t*)0x2000002d = 9;
  *(uint8_t*)0x2000002e = 5;
  *(uint8_t*)0x2000002f = 0x82;
  *(uint8_t*)0x20000030 = 2;
  *(uint16_t*)0x20000031 = 0x200;
  *(uint8_t*)0x20000033 = 0;
  *(uint8_t*)0x20000034 = 0;
  *(uint8_t*)0x20000035 = 0;
  *(uint8_t*)0x20000036 = 9;
  *(uint8_t*)0x20000037 = 5;
  *(uint8_t*)0x20000038 = 0x83;
  *(uint8_t*)0x20000039 = 3;
  *(uint16_t*)0x2000003a = 0x40;
  *(uint8_t*)0x2000003c = 1;
  *(uint8_t*)0x2000003d = 0;
  *(uint8_t*)0x2000003e = 0;
  *(uint8_t*)0x2000003f = 9;
  *(uint8_t*)0x20000040 = 5;
  *(uint8_t*)0x20000041 = 4;
  *(uint8_t*)0x20000042 = 3;
  *(uint16_t*)0x20000043 = 0x40;
  *(uint8_t*)0x20000045 = 1;
  *(uint8_t*)0x20000046 = 0;
  *(uint8_t*)0x20000047 = 0;
  *(uint8_t*)0x20000048 = 9;
  *(uint8_t*)0x20000049 = 5;
  *(uint8_t*)0x2000004a = 5;
  *(uint8_t*)0x2000004b = 2;
  *(uint16_t*)0x2000004c = 0x200;
  *(uint8_t*)0x2000004e = 0;
  *(uint8_t*)0x2000004f = 0;
  *(uint8_t*)0x20000050 = 0;
  *(uint8_t*)0x20000051 = 9;
  *(uint8_t*)0x20000052 = 5;
  *(uint8_t*)0x20000053 = 6;
  *(uint8_t*)0x20000054 = 2;
  *(uint16_t*)0x20000055 = 0x200;
  *(uint8_t*)0x20000057 = 0;
  *(uint8_t*)0x20000058 = 0;
  *(uint8_t*)0x20000059 = 0;
  res = -1;
  res = syz_usb_connect_ath9k(3, 0x5a, 0x20000000, 0);
  if (res != -1)
    r[0] = res;
  *(uint16_t*)0x20000780 = 0xb5;
  *(uint16_t*)0x20000782 = 0x4e00;
  memcpy((void*)0x20000784,
         "\x79\xbd\x88\x2d\x58\x53\xcb\x1e\x9e\xb8\x6a\xc7\x05\xa0\x10\xac\x69"
         "\x20\x47\xfa\x51\x2a\xec\x86\xf6\x1c\x86\x23\x0b\x0d\xd2\xbb\x4b\x80"
         "\x32\xe2\x94\x66\x6f\x90\xd3\x8f\x5a\x75\x79\xea\xa7\xff\x20\xb3\x39"
         "\x4a\xc0\x2a\x52\x40\xa6\x0f\xa1\x6e\x7c\x9a\xa7\xa2\x17\xf6\x65\x2a"
         "\x14\x9f\xff\x19\xc0\x85\x43\x57\x19\x77\xd3\x8b\x88\x3f\xff\x03\x1f"
         "\xc1\x86\x92\x19\xda\x9c\xda\xe8\xc7\x88\x6f\x95\x08\x84\x1e\x8e\x8b"
         "\x4f\xd7\x96\x3d\xcf\xd3\x26\x91\x14\xd5\x2d\xcd\x13\x14\x6c\xa4\x80"
         "\x5f\x5d\x43\x89\x3c\xd0\x53\x5a\x1c\x9b\xd1\xd7\x65\x28\x1f\xa4\xa4"
         "\x36\x3f\xe1\x62\x61\x0e\xf5\xa4\x90\x33\xf5\x2f\x48\x8a\x4f\xca\x4e"
         "\x35\xfe\x62\x18\x0e\x0f\xd0\x70\x08\xcb\x50\x3c\x0a\x40\x6e\xc7\x63"
         "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
         181);
  *(uint16_t*)0x2000083c = 0xff96;
  *(uint16_t*)0x2000083e = 0x4e00;
  memcpy((void*)0x20000840,
         "\x63\xcb\x61\xd1\x5e\xc0\x44\xfe\x90\x1b\x87\x39\xe6\x6c\x77\xdb\x77"
         "\x5b\xb6\xec\xf0\xa6\xd7\x6c\x34\x9a\x8a\x95\xb3\x13\xba\xd2\x4a\xc3"
         "\x6e\xd2\xc2\x43\x25\x79\x17\xbd\xa2\xfe\x08\xde\x2f\x30\x17\x9b\x6e"
         "\xa5\x75\xa9\xc2\x1a\x06\xf1\x8f\x00\x40\x72\xfc\xf5\x0c\x7a\x58\x32"
         "\xfd\xb4\x48\x22\xf5\xfa\x5c\xb5\xf3\x7f\x03\x07\x0f\x6c\x34\x22\x87"
         "\xb8\x82\xd5\x32\xa2\x58\x43\xab\x42\x48\xf4",
         96);
  *(uint16_t*)0x200008a0 = 0xb0;
  *(uint16_t*)0x200008a2 = 0x4e00;
  memcpy((void*)0x200008a4,
         "\xa0\xab\xc6\x28\x1d\x2e\xd2\xb1\x74\xd1\xde\x16\x34\x11\x32\xae\x74"
         "\xf8\x1c\x5d\x9b\x6a\x46\xf7\x97\x07\x31\x67\xf6\x7f\xcb\x99\x2c\xb5"
         "\x6d\x6e\x8e\xb8\x2d\x17\xf9\x1c\x74\x1d\xf7\xe5\x84\x49\xaa\x1a\x37"
         "\xf5\x33\xbc\xfb\xaa\xfa\x4b\x9c\x67\xda\xa4\xc1\x81\xe0\x89\xda\xf1"
         "\x86\x37\xb4\xef\x1f\x14\xe5\x6a\x04\x09\xf7\xc8\xcc\x30\xe1\x95\x43"
         "\x81\x1e\xd6\x46\x34\xe8\x55\xe7\x32\x59\x5c\xb5\x47\xb2\xcd\xfd\xe3"
         "\xbb\xb3\x8b\xd4\xa9\x8c\xf7\x23\x08\x75\xa0\x56\x2f\xad\xa3\x6f\x53"
         "\xae\xf7\x03\xee\x05\xe8\x2d\x64\x4b\xfe\xd4\xc4\x6f\xf6\xe4\x17\x43"
         "\xde\xe0\x67\x20\x7c\xb0\xc4\x5e\xd1\xd3\x75\x6d\x19\x58\x4b\xba\xf3"
         "\xc4\x7d\x54\x39\x3e\x11\x06\x18\xa5\xf5\x15\x3f\x78\xba\x09\x86\x47"
         "\x89\x37\x51\x74\xae\x09",
         176);
  *(uint16_t*)0x20000954 = 0x132;
  *(uint16_t*)0x20000956 = 0x4e00;
  memcpy((void*)0x20000958,
         "\x6d\x03\x67\xc6\x97\x18\xa8\xb9\x48\x1e\xae\xce\xca\x3d\xe7\xf8\x72"
         "\x44\xea\xd2\x64\x2f\xc8\xd6\xe6\xbd\x20\xe4\x5a\xe0\x23\x7d\xc0\xc1"
         "\xc5\x53\x27\xf8\x2c\xb5\x2d\xd4\x57\x3c\x62\x00\x48\x3a\xde\x3b\xf8"
         "\x97\x42\x25\x50\x0b\x2b\xc4\x81\xaf\x32\x51\x6a\xeb\x5a\x82\x36\x0d"
         "\x97\x85\x17\x2d\x0d\x3c\x9a\xb9\x3f\x5b\xc0\x8b\x18\x23\x4e\xc7\x00"
         "\x12\xfd\x4c\x71\x65\x74\x0c\x46\x52\xba\xe9\x7d\x34\xdc\x6d\xcf\xf2"
         "\xa3\x68\x71\xc7\xea\xf5\x2f\x56\x83\x3d\x91\xb0\x2e\x04\xf1\x51\xce"
         "\x05\x8b\x54\xe8\x36\xb8\x32\x27\xa3\xef\x32\xf9\x43\x7a\xec\xa7\x8f"
         "\x7b\x01\x32\xa0\xd5\x37\x1a\x65\x0f\x57\x8a\xff\x13\x4e\xf0\x37\xdd"
         "\x15\x30\x06\xf2\x66\x88\x3f\x0b\x27\xa2\x7e\xda\x8e\x97\xdc\x19\x3c"
         "\x8e\xb6\x4a\x0e\x01\x4d\x94\x33\xf7\x44\xbc\xae\xea\x17\x59\x00\xe3"
         "\x15\x62\x50\x66\x80\x88\xac\x8b\x44\x5b\xb1\x1b\xd7\x37\x5d\x10\x0f"
         "\xa7\xf9\xf5\xfa\x27\xa5\xc0\x08\xde\xd5\xa4\x5f\xfd\xac\x18\x53\x6a"
         "\x7b\x7a\x57\x96\x2e\xd5\x19\xf9\xce\xa0\x14\x8b\x1e\xc4\x97\x49\x94"
         "\xd6\x1e\x20\x75\x20\x48\xd4\x9a\x1a\x49\x9b\xd0\x60\xfa\x03\xbd\x28"
         "\x18\xa5\x62\x38\x0b\x9a\x90\x41\x31\xef\x8f\x83\x61\x8b\xa7\xb1\x5f"
         "\xa9\x44\x85\x36\x24\xc8\x1f\x2d\x7a\xdb\x43\x2f\x07\x73\x14\x24\x82"
         "\xea\x01\x18\xa3\x81\xe3\x78\xb5\xbd\x6f\x9b\xb3\xf3\xdc\xbd\x03\x4b",
         306);
  syz_usb_ep_write(r[0], 0x82, 0x30c, 0x20000780);
  *(uint16_t*)0x200001c0 = 0;
  *(uint16_t*)0x200001c2 = 0x4e00;
  syz_usb_ep_write(r[0], 0x82, 4, 0x200001c0);
  return 0;
}