// https://syzkaller.appspot.com/bug?id=79a95578b90721ff58f3a8e5217fc28a0a36c963
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dev/usb/usb.h>
#include <dev/usb/usbhid.h>
#include <dev/usb/vhci.h>
#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <pwd.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#ifndef SYS_mmap
#define SYS_mmap 197
#endif

static unsigned long long procid;

static void kill_and_wait(int pid, int* status)
{
  kill(pid, SIGKILL);
  while (waitpid(-1, status, 0) != pid) {
  }
}

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 void use_temporary_dir(void)
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    exit(1);
  if (chmod(tmpdir, 0777))
    exit(1);
  if (chdir(tmpdir))
    exit(1);
}

static void __attribute__((noinline)) remove_dir(const char* dir)
{
  DIR* dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EACCES) {
      if (rmdir(dir))
        exit(1);
      return;
    }
    exit(1);
  }
  struct dirent* ep = 0;
  while ((ep = readdir(dp))) {
    if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
      continue;
    char filename[FILENAME_MAX];
    snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
    struct stat st;
    if (lstat(filename, &st))
      exit(1);
    if (S_ISDIR(st.st_mode)) {
      remove_dir(filename);
      continue;
    }
    if (unlink(filename)) {
      exit(1);
    }
  }
  closedir(dp);
  while (rmdir(dir)) {
    exit(1);
  }
}

static void thread_start(void* (*fn)(void*), void* arg)
{
  pthread_t th;
  pthread_attr_t attr;
  pthread_attr_init(&attr);
  pthread_attr_setstacksize(&attr, 128 << 10);
  int i = 0;
  for (; i < 100; i++) {
    if (pthread_create(&th, &attr, fn, arg) == 0) {
      pthread_attr_destroy(&attr);
      return;
    }
    if (errno == EAGAIN) {
      usleep(50);
      continue;
    }
    break;
  }
  exit(1);
}

typedef struct {
  pthread_mutex_t mu;
  pthread_cond_t cv;
  int state;
} event_t;

static void event_init(event_t* ev)
{
  if (pthread_mutex_init(&ev->mu, 0))
    exit(1);
  if (pthread_cond_init(&ev->cv, 0))
    exit(1);
  ev->state = 0;
}

static void event_reset(event_t* ev)
{
  ev->state = 0;
}

static void event_set(event_t* ev)
{
  pthread_mutex_lock(&ev->mu);
  if (ev->state)
    exit(1);
  ev->state = 1;
  pthread_mutex_unlock(&ev->mu);
  pthread_cond_broadcast(&ev->cv);
}

static void event_wait(event_t* ev)
{
  pthread_mutex_lock(&ev->mu);
  while (!ev->state)
    pthread_cond_wait(&ev->cv, &ev->mu);
  pthread_mutex_unlock(&ev->mu);
}

static int event_isset(event_t* ev)
{
  pthread_mutex_lock(&ev->mu);
  int res = ev->state;
  pthread_mutex_unlock(&ev->mu);
  return res;
}

static int event_timedwait(event_t* ev, uint64_t timeout)
{
  uint64_t start = current_time_ms();
  uint64_t now = start;
  pthread_mutex_lock(&ev->mu);
  for (;;) {
    if (ev->state)
      break;
    uint64_t remain = timeout - (now - start);
    struct timespec ts;
    ts.tv_sec = remain / 1000;
    ts.tv_nsec = (remain % 1000) * 1000 * 1000;
    pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
    now = current_time_ms();
    if (now - start > timeout)
      break;
  }
  int res = ev->state;
  pthread_mutex_unlock(&ev->mu);
  return res;
}

struct usb_endpoint_descriptor {
  uint8_t bLength;
  uint8_t bDescriptorType;
  uint8_t bEndpointAddress;
  uint8_t bmAttributes;
  uint16_t wMaxPacketSize;
  uint8_t bInterval;
  uint8_t bRefresh;
  uint8_t bSynchAddress;
} __attribute__((packed));

struct usb_device_descriptor {
  uint8_t bLength;
  uint8_t bDescriptorType;
  uint16_t bcdUSB;
  uint8_t bDeviceClass;
  uint8_t bDeviceSubClass;
  uint8_t bDeviceProtocol;
  uint8_t bMaxPacketSize0;
  uint16_t idVendor;
  uint16_t idProduct;
  uint16_t bcdDevice;
  uint8_t iManufacturer;
  uint8_t iProduct;
  uint8_t iSerialNumber;
  uint8_t bNumConfigurations;
} __attribute__((packed));

struct usb_config_descriptor {
  uint8_t bLength;
  uint8_t bDescriptorType;
  uint16_t wTotalLength;
  uint8_t bNumInterfaces;
  uint8_t bConfigurationValue;
  uint8_t iConfiguration;
  uint8_t bmAttributes;
  uint8_t bMaxPower;
} __attribute__((packed));

struct usb_interface_descriptor {
  uint8_t bLength;
  uint8_t bDescriptorType;
  uint8_t bInterfaceNumber;
  uint8_t bAlternateSetting;
  uint8_t bNumEndpoints;
  uint8_t bInterfaceClass;
  uint8_t bInterfaceSubClass;
  uint8_t bInterfaceProtocol;
  uint8_t iInterface;
} __attribute__((packed));

struct usb_ctrlrequest {
  uint8_t bRequestType;
  uint8_t bRequest;
  uint16_t wValue;
  uint16_t wIndex;
  uint16_t wLength;
} __attribute__((packed));

struct usb_qualifier_descriptor {
  uint8_t bLength;
  uint8_t bDescriptorType;
  uint16_t bcdUSB;
  uint8_t bDeviceClass;
  uint8_t bDeviceSubClass;
  uint8_t bDeviceProtocol;
  uint8_t bMaxPacketSize0;
  uint8_t bNumConfigurations;
  uint8_t bRESERVED;
} __attribute__((packed));

#define USB_TYPE_MASK (0x03 << 5)
#define USB_TYPE_STANDARD (0x00 << 5)
#define USB_TYPE_CLASS (0x01 << 5)
#define USB_TYPE_VENDOR (0x02 << 5)
#define USB_TYPE_RESERVED (0x03 << 5)

#define USB_DT_DEVICE 0x01
#define USB_DT_CONFIG 0x02
#define USB_DT_STRING 0x03
#define USB_DT_INTERFACE 0x04
#define USB_DT_ENDPOINT 0x05
#define USB_DT_DEVICE_QUALIFIER 0x06
#define USB_DT_OTHER_SPEED_CONFIG 0x07
#define USB_DT_INTERFACE_POWER 0x08
#define USB_DT_OTG 0x09
#define USB_DT_DEBUG 0x0a
#define USB_DT_INTERFACE_ASSOCIATION 0x0b
#define USB_DT_SECURITY 0x0c
#define USB_DT_KEY 0x0d
#define USB_DT_ENCRYPTION_TYPE 0x0e
#define USB_DT_BOS 0x0f
#define USB_DT_DEVICE_CAPABILITY 0x10
#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
#define USB_DT_WIRE_ADAPTER 0x21
#define USB_DT_RPIPE 0x22
#define USB_DT_CS_RADIO_CONTROL 0x23
#define USB_DT_PIPE_USAGE 0x24
#define USB_DT_SS_ENDPOINT_COMP 0x30
#define USB_DT_SSP_ISOC_ENDPOINT_COMP 0x31

#define USB_REQ_GET_STATUS 0x00
#define USB_REQ_CLEAR_FEATURE 0x01
#define USB_REQ_SET_FEATURE 0x03
#define USB_REQ_SET_ADDRESS 0x05
#define USB_REQ_GET_DESCRIPTOR 0x06
#define USB_REQ_SET_DESCRIPTOR 0x07
#define USB_REQ_GET_CONFIGURATION 0x08
#define USB_REQ_SET_CONFIGURATION 0x09
#define USB_REQ_GET_INTERFACE 0x0A
#define USB_REQ_SET_INTERFACE 0x0B
#define USB_REQ_SYNCH_FRAME 0x0C
#define USB_REQ_SET_SEL 0x30
#define USB_REQ_SET_ISOCH_DELAY 0x31

#define USB_REQ_SET_ENCRYPTION 0x0D
#define USB_REQ_GET_ENCRYPTION 0x0E
#define USB_REQ_RPIPE_ABORT 0x0E
#define USB_REQ_SET_HANDSHAKE 0x0F
#define USB_REQ_RPIPE_RESET 0x0F
#define USB_REQ_GET_HANDSHAKE 0x10
#define USB_REQ_SET_CONNECTION 0x11
#define USB_REQ_SET_SECURITY_DATA 0x12
#define USB_REQ_GET_SECURITY_DATA 0x13
#define USB_REQ_SET_WUSB_DATA 0x14
#define USB_REQ_LOOPBACK_DATA_WRITE 0x15
#define USB_REQ_LOOPBACK_DATA_READ 0x16
#define USB_REQ_SET_INTERFACE_DS 0x17

#define USB_REQ_GET_PARTNER_PDO 20
#define USB_REQ_GET_BATTERY_STATUS 21
#define USB_REQ_SET_PDO 22
#define USB_REQ_GET_VDM 23
#define USB_REQ_SEND_VDM 24

#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;
}

static int vhci_open(void)
{
  char path[1024];
  snprintf(path, sizeof(path), "/dev/vhci%llu", procid);
  return open(path, O_RDWR);
}

static int vhci_setport(int fd, u_int port)
{
  struct vhci_ioc_set_port args;
  args.port = port;
  return ioctl(fd, VHCI_IOC_SET_PORT, &args);
}

static int vhci_usb_attach(int fd)
{
  return ioctl(fd, VHCI_IOC_USB_ATTACH, NULL);
}

static int vhci_usb_recv(int fd, void* buf, size_t size)
{
  uint8_t* ptr = (uint8_t*)buf;
  while (1) {
    ssize_t done = read(fd, ptr, size);
    if (done < 0)
      return -1;
    if ((size_t)done == size)
      return 0;
    size -= done;
    ptr += done;
  }
}

static int vhci_usb_send(int fd, void* buf, size_t size)
{
  uint8_t* ptr = (uint8_t*)buf;
  while (1) {
    ssize_t done = write(fd, ptr, size);
    if (done <= 0)
      return -1;
    if ((size_t)done == size)
      return 0;
    size -= done;
    ptr += done;
  }
}

static volatile long
syz_usb_connect_impl(int fd, 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)
{
  struct usb_device_index* index = add_usb_index(fd, dev, dev_len);
  if (!index) {
    return -1;
  }
  if (vhci_setport(fd, 1))
    exit(1);
  if (vhci_usb_attach(fd)) {
    return -1;
  }
  bool done = false;
  while (!done) {
    vhci_request_t req;
    if (vhci_usb_recv(fd, &req, sizeof(req))) {
      return -1;
    }
    if (req.type != VHCI_REQ_CTRL) {
      return -1;
    }
    char* response_data = NULL;
    uint32_t response_length = 0;
    struct usb_qualifier_descriptor qual;
    char data[4096];
    if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
      if (!lookup_connect_response_in(
              fd, descs, (const struct usb_ctrlrequest*)&req.u.ctrl, &qual,
              &response_data, &response_length)) {
        return -1;
      }
    } else {
      if (!lookup_connect_response_out(
              fd, descs, (const struct usb_ctrlrequest*)&req.u.ctrl, &done)) {
        return -1;
      }
      response_data = NULL;
      response_length = UGETW(req.u.ctrl.wLength);
    }
    if ((req.u.ctrl.bmRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD &&
        req.u.ctrl.bRequest == USB_REQ_SET_CONFIGURATION) {
    }
    if (response_length > sizeof(data))
      response_length = 0;
    if ((uint32_t)UGETW(req.u.ctrl.wLength) < response_length)
      response_length = UGETW(req.u.ctrl.wLength);
    if (response_data)
      memcpy(data, response_data, response_length);
    else
      memset(data, 0, response_length);
    int rv = 0;
    if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
      if (response_length > 0) {
        vhci_response_t res;
        res.size = response_length;
        rv = vhci_usb_send(fd, &res, sizeof(res));
        if (rv == 0)
          rv = vhci_usb_send(fd, data, response_length);
      }
    } else {
      rv = vhci_usb_recv(fd, data, response_length);
    }
    if (rv < 0) {
      return -1;
    }
  }
  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;
  if (!dev) {
    return -1;
  }
  int fd = vhci_open();
  if (fd < 0)
    exit(1);
  long res = syz_usb_connect_impl(fd, speed, dev_len, dev, descs,
                                  &lookup_connect_response_out_generic);
  close(fd);
  return res;
}

static void sandbox_common()
{
  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = 8 << 20;
  setrlimit(RLIMIT_MEMLOCK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_FSIZE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_STACK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 0;
  setrlimit(RLIMIT_CORE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 256;
  setrlimit(RLIMIT_NOFILE, &rlim);
}

static void loop();

static int do_sandbox_none(void)
{
  sandbox_common();
  loop();
  return 0;
}

struct thread_t {
  int created, call;
  event_t ready, done;
};

static struct thread_t threads[16];
static void execute_call(int call);
static int running;

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    event_wait(&th->ready);
    event_reset(&th->ready);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    event_set(&th->done);
  }
  return 0;
}

static void execute_one(void)
{
  int i, call, thread;
  for (call = 0; call < 3; call++) {
    for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
         thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        event_init(&th->ready);
        event_init(&th->done);
        event_set(&th->done);
        thread_start(thr, th);
      }
      if (!event_isset(&th->done))
        continue;
      event_reset(&th->done);
      th->call = call;
      __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
      event_set(&th->ready);
      if (call == 0 || call == 1)
        break;
      event_timedwait(&th->done, 50 + (call == 0 ? 3000 : 0) +
                                     (call == 1 ? 3000 : 0) +
                                     (call == 2 ? 3000 : 0));
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
}

static void execute_one(void);

#define WAIT_FLAGS 0

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    char cwdbuf[32];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      exit(1);
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      if (chdir(cwdbuf))
        exit(1);
      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;
    }
    remove_dir(cwdbuf);
  }
}

void execute_call(int call)
{
  switch (call) {
  case 0:
    *(uint8_t*)0x20000d40 = 0x12;
    *(uint8_t*)0x20000d41 = 1;
    *(uint16_t*)0x20000d42 = 0;
    *(uint8_t*)0x20000d44 = 0;
    *(uint8_t*)0x20000d45 = 0;
    *(uint8_t*)0x20000d46 = 0;
    *(uint8_t*)0x20000d47 = 0;
    *(uint16_t*)0x20000d48 = 0;
    *(uint16_t*)0x20000d4a = 0;
    *(uint16_t*)0x20000d4c = 0x40;
    *(uint8_t*)0x20000d4e = 1;
    *(uint8_t*)0x20000d4f = 2;
    *(uint8_t*)0x20000d50 = 3;
    *(uint8_t*)0x20000d51 = 1;
    *(uint8_t*)0x20000d52 = 9;
    *(uint8_t*)0x20000d53 = 2;
    *(uint16_t*)0x20000d54 = 0x24;
    *(uint8_t*)0x20000d56 = 1;
    *(uint8_t*)0x20000d57 = 1;
    *(uint8_t*)0x20000d58 = 0;
    *(uint8_t*)0x20000d59 = 0;
    *(uint8_t*)0x20000d5a = 0;
    *(uint8_t*)0x20000d5b = 9;
    *(uint8_t*)0x20000d5c = 4;
    *(uint8_t*)0x20000d5d = 0;
    *(uint8_t*)0x20000d5e = 0;
    *(uint8_t*)0x20000d5f = 0;
    *(uint8_t*)0x20000d60 = 3;
    *(uint8_t*)0x20000d61 = 1;
    *(uint8_t*)0x20000d62 = 0;
    *(uint8_t*)0x20000d63 = 0;
    *(uint8_t*)0x20000d64 = 9;
    *(uint8_t*)0x20000d65 = 0x21;
    *(uint16_t*)0x20000d66 = 0;
    *(uint8_t*)0x20000d68 = 0;
    *(uint8_t*)0x20000d69 = 1;
    *(uint8_t*)0x20000d6a = 0x22;
    *(uint16_t*)0x20000d6b = 0;
    *(uint8_t*)0x20000d6d = 9;
    *(uint8_t*)0x20000d6e = 5;
    *(uint8_t*)0x20000d6f = 0x81;
    *(uint8_t*)0x20000d70 = 3;
    *(uint16_t*)0x20000d71 = 0;
    *(uint8_t*)0x20000d73 = 0;
    *(uint8_t*)0x20000d74 = 0;
    *(uint8_t*)0x20000d75 = 0;
    syz_usb_connect(/*speed=*/0, /*dev_len=*/0x36, /*dev=*/0x20000d40,
                    /*conn_descs=*/0);
    break;
  case 1:
    memcpy((void*)0x20000000,
           "\x12\x01\x00\x02\x00\x00\x00\x08\x25\x05\xb8\xa4\x40\x00\x12\x02"
           "\x07\x01\x03\xff\x09\x05\x01\x02\x50\x00\x1f\x81\x7f",
           29);
    *(uint32_t*)0x20000400 = 0xa;
    *(uint64_t*)0x20000404 = 0x20000040;
    *(uint8_t*)0x20000040 = 0xa;
    *(uint8_t*)0x20000041 = 6;
    *(uint16_t*)0x20000042 = 0x200;
    *(uint8_t*)0x20000044 = 0x16;
    *(uint8_t*)0x20000045 = 9;
    *(uint8_t*)0x20000046 = 0;
    *(uint8_t*)0x20000047 = -1;
    *(uint8_t*)0x20000048 = 7;
    *(uint8_t*)0x20000049 = 0;
    *(uint32_t*)0x2000040c = 5;
    *(uint64_t*)0x20000410 = 0x20000080;
    *(uint8_t*)0x20000080 = 5;
    *(uint8_t*)0x20000081 = 0xf;
    *(uint16_t*)0x20000082 = 5;
    *(uint8_t*)0x20000084 = 0;
    *(uint32_t*)0x20000418 = 6;
    *(uint32_t*)0x2000041c = 4;
    *(uint64_t*)0x20000420 = 0x20000140;
    *(uint8_t*)0x20000140 = 4;
    *(uint8_t*)0x20000141 = 3;
    *(uint16_t*)0x20000142 = 0x44a;
    *(uint32_t*)0x20000428 = 0xb0;
    *(uint64_t*)0x2000042c = 0x20000180;
    *(uint8_t*)0x20000180 = 0xb0;
    *(uint8_t*)0x20000181 = 3;
    memcpy((void*)0x20000182,
           "\x28\x3e\x27\x1a\xd5\xbc\x24\xc0\xa0\xf9\x6d\xf1\x35\x64\xed\x31"
           "\x05\xd6\x8f\x3e\xc4\x2f\xed\x46\x2b\xee\xf8\x5e\x25\xbe\x86\x27"
           "\x18\x74\xed\xa8\xea\x31\x79\x64\x38\x35\x0b\xba\x12\x46\x0c\x13"
           "\x69\xc6\x55\xfe\xba\x0f\x6d\x6f\x6c\x3d\x45\x5d\x74\x82\xe8\x92"
           "\x61\x07\x20\x57\x7e\x7b\x00\x8c\x4a\x3d\x8a\x26\x17\x88\x5d\xef"
           "\x54\xeb\x9c\xf8\x5b\x7d\xca\x09\xe7\xa0\x84\x3a\xd4\x3e\x81\xb1"
           "\xc5\x2b\xfc\xa1\x00\x7e\xae\x37\xc9\x46\xa1\x5f\x9b\x0b\x7e\xbd"
           "\x81\x38\x4b\xab\x8a\x96\xc5\xd9\x5e\x4b\xe1\x15\x56\x00\x51\xdf"
           "\xbb\x31\xe5\xbc\xbc\xa2\xcb\x40\xe8\x10\x95\xd6\x3e\x9b\xf5\xf2"
           "\xcb\x32\x9e\x70\x74\xed\x46\xb4\xe4\x4c\xea\xe2\x03\x44\x43\xdd"
           "\x9d\xc4\xc4\x54\x24\x4e\x29\x9e\x83\x57\xc5\x52\xe2\x34",
           174);
    *(uint32_t*)0x20000434 = 4;
    *(uint64_t*)0x20000438 = 0x20000240;
    *(uint8_t*)0x20000240 = 0x1e;
    *(uint8_t*)0x20000241 = 3;
    *(uint16_t*)0x20000242 = 0x1c01;
    *(uint32_t*)0x20000440 = 0x54;
    *(uint64_t*)0x20000444 = 0x200000c0;
    *(uint8_t*)0x200000c0 = 0;
    *(uint8_t*)0x200000c1 = 3;
    *(uint16_t*)0x200000c2 = 0x1407;
    *(uint32_t*)0x2000044c = 0xea;
    *(uint64_t*)0x20000450 = 0x200002c0;
    *(uint8_t*)0x200002c0 = 0xea;
    *(uint8_t*)0x200002c1 = 3;
    memcpy(
        (void*)0x200002c2,
        "\xc6\xcd\x7b\xa6\x73\xaf\x26\x76\xd5\x14\xb8\xf7\x74\x82\xb8\x92\x4c"
        "\xce\xb1\x37\x55\xb2\xc5\x47\x51\xbb\x04\x79\x30\x64\x89\xe5\x3d\x1a"
        "\x4e\xaa\x4b\xdb\x10\x06\x6a\xf0\x49\x07\xd1\xc9\xbb\x54\x28\xef\x75"
        "\x53\x09\xaf\x86\x32\xb3\x1d\xf8\x78\x6c\xb2\x92\x1c\x82\x09\xfa\x7e"
        "\xb2\x47\xed\xf9\xa3\x1a\x14\x5c\x31\x63\x02\xbf\xb0\xce\xdd\xdc\x83"
        "\xf4\x5f\xa0\x08\x7b\xee\x04\x7b\xd9\xfb\x0f\x4d\xf2\xe9\x3f\x7a\xa1"
        "\x84\x72\xb0\x3c\xf7\xb8\xa9\x39\x16\xff\x77\xdf\x87\x6a\x3d\x94\xde"
        "\x46\xdd\x56\x81\x35\x91\xf8\x47\xdd\x6a\xc4\x15\x97\x42\xc5\xd2\xec"
        "\xbf\x5f\x47\x5f\xe1\x16\x87\xc4\x3f\x28\x1c\x26\x4a\x45\x15\x88\x37"
        "\xd3\x8d\x90\x00\x25\x72\x23\xbd\xfa\x88\x1e\x3a\xa9\xbd\xc2\xd4\x0a"
        "\xc4\x90\x09\xaa\xd4\x7c\xe8\xdf\x3f\xfd\xd7\x35\x4a\x82\x9e\x10\x1b"
        "\x4c\x1e\x07\x49\x5d\x04\x91\xa3\xdf\xdf\x3c\x76\x86\xb9\xb8\xd1\x38"
        "\x47\x8e\x94\x37\x72\x85\x28\x3c\xeb\x2e\xef\x02\x1d\x3a\xc9\x42\x83"
        "\xd1\x94\x6f\xb8\xf0\xa1\xd6\x5d\x89\x69\x00",
        232);
    *(uint32_t*)0x20000458 = 0x40;
    *(uint64_t*)0x2000045c = 0x200003c0;
    memcpy((void*)0x200003c0,
           "\x40\x03\x3d\xb2\x89\x4d\x33\x0d\x3c\xd7\x69\xe7\x96\xa7\x21\xa0"
           "\x0e\x78\x7e\x4f\xf3\xdc\x3e\xfe\x41\xc3\x4c\xae\x8b\xd6\x83\x9a"
           "\x42\x86\xd0\x15\x62\xaa\x8e\xbe\xf0\xd9\x3b\xdc\x5c\xb5\x0c\x9f"
           "\xda\x7f\x0c\xe2\x0f\x92\x8e\x6a\x6e\x25\x52\xd5\x26\x91\x00\x00",
           64);
    syz_usb_connect(/*speed=*/7, /*dev_len=*/0x2d, /*dev=*/0x20000000,
                    /*conn_descs=*/0x20000400);
    break;
  case 2:
    *(uint8_t*)0x20000100 = 0x12;
    *(uint8_t*)0x20000101 = 1;
    *(uint16_t*)0x20000102 = 0x201;
    *(uint8_t*)0x20000104 = 0;
    *(uint8_t*)0x20000105 = 0;
    *(uint8_t*)0x20000106 = 0;
    *(uint8_t*)0x20000107 = 0x20;
    *(uint16_t*)0x20000108 = 0x525;
    *(uint16_t*)0x2000010a = 0xa4a8;
    *(uint16_t*)0x2000010c = 0x40;
    *(uint8_t*)0x2000010e = 1;
    *(uint8_t*)0x2000010f = 2;
    *(uint8_t*)0x20000110 = 3;
    *(uint8_t*)0x20000111 = 1;
    *(uint8_t*)0x20000112 = 9;
    *(uint8_t*)0x20000113 = 2;
    *(uint16_t*)0x20000114 = 0x24;
    *(uint8_t*)0x20000116 = 1;
    *(uint8_t*)0x20000117 = 1;
    *(uint8_t*)0x20000118 = 0;
    *(uint8_t*)0x20000119 = 0x90;
    *(uint8_t*)0x2000011a = 0;
    *(uint8_t*)0x2000011b = 9;
    *(uint8_t*)0x2000011c = 4;
    *(uint8_t*)0x2000011d = 0;
    *(uint8_t*)0x2000011e = 8;
    *(uint8_t*)0x2000011f = 1;
    *(uint8_t*)0x20000120 = 7;
    *(uint8_t*)0x20000121 = 1;
    *(uint8_t*)0x20000122 = 3;
    *(uint8_t*)0x20000123 = 3;
    *(uint8_t*)0x20000124 = 9;
    *(uint8_t*)0x20000125 = 5;
    *(uint8_t*)0x20000126 = 1;
    *(uint8_t*)0x20000127 = 2;
    *(uint16_t*)0x20000128 = 0x40;
    *(uint8_t*)0x2000012a = 2;
    *(uint8_t*)0x2000012b = 0xe9;
    *(uint8_t*)0x2000012c = 0x83;
    *(uint8_t*)0x2000012d = 9;
    *(uint8_t*)0x2000012e = 5;
    *(uint8_t*)0x2000012f = 0x82;
    *(uint8_t*)0x20000130 = 2;
    *(uint16_t*)0x20000131 = 0x20;
    *(uint8_t*)0x20000133 = 5;
    *(uint8_t*)0x20000134 = 0x97;
    *(uint8_t*)0x20000135 = 3;
    *(uint32_t*)0x200007c0 = 0xa;
    *(uint64_t*)0x200007c4 = 0x20000280;
    *(uint8_t*)0x20000280 = 0xa;
    *(uint8_t*)0x20000281 = 6;
    *(uint16_t*)0x20000282 = 0x300;
    *(uint8_t*)0x20000284 = 1;
    *(uint8_t*)0x20000285 = 2;
    *(uint8_t*)0x20000286 = 0x1f;
    *(uint8_t*)0x20000287 = 8;
    *(uint8_t*)0x20000288 = 4;
    *(uint8_t*)0x20000289 = 0;
    *(uint32_t*)0x200007cc = 0x37;
    *(uint64_t*)0x200007d0 = 0x20000480;
    memcpy((void*)0x20000480,
           "\x05\x0f\x37\x00\x03\x14\x10\x04\x22\xd5\x0b\x7d\xab\xc4\x65\x4d"
           "\x8b\x30\x11\x98\xdf\x42\x12\x43\xb2\x0a\x10\x03\x00\x03\x00\x03"
           "\x08\x00\x01\x14\x10\x04\x09\x5b\xd3\x2b\x5b\xa6\x72\x51\x17\x35"
           "\xbc\x57\xc0\x74\x61\x96\x12",
           55);
    *(uint32_t*)0x200007d8 = 9;
    *(uint32_t*)0x200007dc = 4;
    *(uint64_t*)0x200007e0 = 0x200004c0;
    *(uint8_t*)0x200004c0 = 4;
    *(uint8_t*)0x200004c1 = 3;
    *(uint16_t*)0x200004c2 = 0xc04;
    *(uint32_t*)0x200007e8 = 4;
    *(uint64_t*)0x200007ec = 0x20000500;
    *(uint8_t*)0x20000500 = 4;
    *(uint8_t*)0x20000501 = 3;
    *(uint16_t*)0x20000502 = 0x408;
    *(uint32_t*)0x200007f4 = 4;
    *(uint64_t*)0x200007f8 = 0x20000540;
    *(uint8_t*)0x20000540 = 4;
    *(uint8_t*)0x20000541 = 3;
    *(uint16_t*)0x20000542 = 0x440a;
    *(uint32_t*)0x20000800 = 4;
    *(uint64_t*)0x20000804 = 0x20000580;
    *(uint8_t*)0x20000580 = 4;
    *(uint8_t*)0x20000581 = 3;
    *(uint16_t*)0x20000582 = 0x300a;
    *(uint32_t*)0x2000080c = 4;
    *(uint64_t*)0x20000810 = 0x200005c0;
    *(uint8_t*)0x200005c0 = 4;
    *(uint8_t*)0x200005c1 = 3;
    *(uint16_t*)0x200005c2 = 0x406;
    *(uint32_t*)0x20000818 = 4;
    *(uint64_t*)0x2000081c = 0x20000600;
    *(uint8_t*)0x20000600 = 4;
    *(uint8_t*)0x20000601 = 3;
    *(uint16_t*)0x20000602 = 0x1409;
    *(uint32_t*)0x20000824 = 4;
    *(uint64_t*)0x20000828 = 0x20000640;
    *(uint8_t*)0x20000640 = 4;
    *(uint8_t*)0x20000641 = 3;
    *(uint16_t*)0x20000642 = 0x1001;
    *(uint32_t*)0x20000830 = 0x32;
    *(uint64_t*)0x20000834 = 0x20000680;
    *(uint8_t*)0x20000680 = 0x32;
    *(uint8_t*)0x20000681 = 3;
    memcpy((void*)0x20000682,
           "\xa0\xf0\xc5\xd0\xef\x66\x4f\xd9\xea\x0a\x61\x3c\xee\x4b\xdc\xee"
           "\xb6\xc6\x44\xee\x9d\x28\x7d\xac\xd8\x77\x26\xe2\xbf\xa7\x43\x8e"
           "\x76\x07\xe3\x88\xd9\xb7\x2f\x7c\x3a\xe1\x07\xf3\xe2\x01\x9e\x18",
           48);
    *(uint32_t*)0x2000083c = 0xd7;
    *(uint64_t*)0x20000840 = 0x20000880;
    memcpy((void*)0x20000880,
           "\xd7\x03\xcb\x40\xbc\x5a\xab\x3e\x2e\xbe\x93\x7a\x46\x18\x5f\xa9"
           "\x9d\x7e\x23\x57\x0e\x08\x25\x48\xad\x8a\xba\x9b\x7d\x9b\x50\x59"
           "\x6c\x58\x5c\xc3\x79\x5d\x15\xb1\xe0\x4d\x6e\xb3\xcb\x62\x59\xc6"
           "\x08\x00\xad\x83\x9e\xd6\xf8\x13\x8d\x73\xea\xe6\x5d\x20\x84\x2a"
           "\x92\xf9\xd9\xba\xcf\xcb\xf0\xb9\x09\xfe\x97\xe3\xcf\xf0\xb0\x83"
           "\x83\x5a\xc0\xda\x5c\xcd\xe0\x13\xb8\x7b\xdc\x4e\x1d\x2d\xd7\x04"
           "\x00\x00\x00\x50\xa8\xcc\x84\xba\x8d\x57\x74\xf8\x3c\x35\xe7\xfe"
           "\xc1\xc4\x92\x13\x53\x7b\xa1\x29\xc8\xfc\xea\x54\xf3\x2b\xb3\x21"
           "\x26\xe3\xee\xe6\xc7\x7d\x62\xd8\x8c\xa8\x7e\xde\x81\xec\x79\xd7"
           "\xdc\x1a\x86\xca\x22\x62\x31\x14\xfc\x94\x1e\x55\xe7\x8e\x97\x23"
           "\xa1\xa7\x0b\xe6\x5e\x63\x62\x99\x27\x07\xb4\xae\x2b\x10\x4c\x3a"
           "\xf0\xb1\xa3\x61\x0f\x9c\x0f\x8a\x2e\x88\x2c\x20\xb0\x2d\x02\x09"
           "\x0c\x2e\xa2\x9d\x3b\xe3\x5d\x69\x0a\x6c\xdc\xf9\x37\xd2\x11\x27"
           "\xa2\x93\x72\x8b\x0b\xb1\xc9\x89\x78\x15\x5a\xe9\xf5\x4c\x07",
           223);
    syz_usb_connect(/*speed=*/7, /*dev_len=*/0x36, /*dev=*/0x20000100,
                    /*conn_descs=*/0x200007c0);
    break;
  }
}
int main(void)
{
  syscall(SYS_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=*/3ul,
          /*flags=*/0x1012ul, /*fd=*/-1, /*pad=*/0ul, /*offset=*/0ul);
  for (procid = 0; procid < 6; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      do_sandbox_none();
    }
  }
  sleep(1000000);
  return 0;
}