// https://syzkaller.appspot.com/bug?id=b860e00cefefb3cd94b2d35810e2e8c02e3f8177
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <arpa/inet.h>
#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <net/if.h>
#include <netinet/in.h>
#include <pthread.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/socket.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/futex.h>
#include <linux/genetlink.h>
#include <linux/if_addr.h>
#include <linux/if_link.h>
#include <linux/in6.h>
#include <linux/neighbour.h>
#include <linux/net.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/veth.h>

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 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);
}

#define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off))
#define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len)               \
  *(type*)(addr) =                                                             \
      htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) |           \
            (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len))))

typedef struct {
  int state;
} event_t;

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

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

static void event_set(event_t* ev)
{
  if (ev->state)
    exit(1);
  __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE);
  syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000);
}

static void event_wait(event_t* ev)
{
  while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0);
}

static int event_isset(event_t* ev)
{
  return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE);
}

static int event_timedwait(event_t* ev, uint64_t timeout)
{
  uint64_t start = current_time_ms();
  uint64_t now = start;
  for (;;) {
    uint64_t remain = timeout - (now - start);
    struct timespec ts;
    ts.tv_sec = remain / 1000;
    ts.tv_nsec = (remain % 1000) * 1000 * 1000;
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts);
    if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
      return 1;
    now = current_time_ms();
    if (now - start > timeout)
      return 0;
  }
}

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;
}

struct nlmsg {
  char* pos;
  int nesting;
  struct nlattr* nested[8];
  char buf[4096];
};

static void netlink_init(struct nlmsg* nlmsg, int typ, int flags,
                         const void* data, int size)
{
  memset(nlmsg, 0, sizeof(*nlmsg));
  struct nlmsghdr* hdr = (struct nlmsghdr*)nlmsg->buf;
  hdr->nlmsg_type = typ;
  hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | flags;
  memcpy(hdr + 1, data, size);
  nlmsg->pos = (char*)(hdr + 1) + NLMSG_ALIGN(size);
}

static void netlink_attr(struct nlmsg* nlmsg, int typ, const void* data,
                         int size)
{
  struct nlattr* attr = (struct nlattr*)nlmsg->pos;
  attr->nla_len = sizeof(*attr) + size;
  attr->nla_type = typ;
  if (size > 0)
    memcpy(attr + 1, data, size);
  nlmsg->pos += NLMSG_ALIGN(attr->nla_len);
}

static void netlink_nest(struct nlmsg* nlmsg, int typ)
{
  struct nlattr* attr = (struct nlattr*)nlmsg->pos;
  attr->nla_type = typ;
  nlmsg->pos += sizeof(*attr);
  nlmsg->nested[nlmsg->nesting++] = attr;
}

static void netlink_done(struct nlmsg* nlmsg)
{
  struct nlattr* attr = nlmsg->nested[--nlmsg->nesting];
  attr->nla_len = nlmsg->pos - (char*)attr;
}

static int netlink_send_ext(struct nlmsg* nlmsg, int sock, uint16_t reply_type,
                            int* reply_len, bool dofail)
{
  if (nlmsg->pos > nlmsg->buf + sizeof(nlmsg->buf) || nlmsg->nesting)
    exit(1);
  struct nlmsghdr* hdr = (struct nlmsghdr*)nlmsg->buf;
  hdr->nlmsg_len = nlmsg->pos - nlmsg->buf;
  struct sockaddr_nl addr;
  memset(&addr, 0, sizeof(addr));
  addr.nl_family = AF_NETLINK;
  ssize_t n = sendto(sock, nlmsg->buf, hdr->nlmsg_len, 0,
                     (struct sockaddr*)&addr, sizeof(addr));
  if (n != (ssize_t)hdr->nlmsg_len) {
    if (dofail)
      exit(1);
    return -1;
  }
  n = recv(sock, nlmsg->buf, sizeof(nlmsg->buf), 0);
  if (reply_len)
    *reply_len = 0;
  if (n < 0) {
    if (dofail)
      exit(1);
    return -1;
  }
  if (n < (ssize_t)sizeof(struct nlmsghdr)) {
    errno = EINVAL;
    if (dofail)
      exit(1);
    return -1;
  }
  if (hdr->nlmsg_type == NLMSG_DONE)
    return 0;
  if (reply_len && hdr->nlmsg_type == reply_type) {
    *reply_len = n;
    return 0;
  }
  if (n < (ssize_t)(sizeof(struct nlmsghdr) + sizeof(struct nlmsgerr))) {
    errno = EINVAL;
    if (dofail)
      exit(1);
    return -1;
  }
  if (hdr->nlmsg_type != NLMSG_ERROR) {
    errno = EINVAL;
    if (dofail)
      exit(1);
    return -1;
  }
  errno = -((struct nlmsgerr*)(hdr + 1))->error;
  return -errno;
}

static int netlink_send(struct nlmsg* nlmsg, int sock)
{
  return netlink_send_ext(nlmsg, sock, 0, NULL, true);
}

static int netlink_query_family_id(struct nlmsg* nlmsg, int sock,
                                   const char* family_name, bool dofail)
{
  struct genlmsghdr genlhdr;
  memset(&genlhdr, 0, sizeof(genlhdr));
  genlhdr.cmd = CTRL_CMD_GETFAMILY;
  netlink_init(nlmsg, GENL_ID_CTRL, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(nlmsg, CTRL_ATTR_FAMILY_NAME, family_name,
               strnlen(family_name, GENL_NAMSIZ - 1) + 1);
  int n = 0;
  int err = netlink_send_ext(nlmsg, sock, GENL_ID_CTRL, &n, dofail);
  if (err < 0) {
    return -1;
  }
  uint16_t id = 0;
  struct nlattr* attr = (struct nlattr*)(nlmsg->buf + NLMSG_HDRLEN +
                                         NLMSG_ALIGN(sizeof(genlhdr)));
  for (; (char*)attr < nlmsg->buf + n;
       attr = (struct nlattr*)((char*)attr + NLMSG_ALIGN(attr->nla_len))) {
    if (attr->nla_type == CTRL_ATTR_FAMILY_ID) {
      id = *(uint16_t*)(attr + 1);
      break;
    }
  }
  if (!id) {
    errno = EINVAL;
    return -1;
  }
  recv(sock, nlmsg->buf, sizeof(nlmsg->buf), 0);
  return id;
}

static unsigned int queue_count = 2;

static void netlink_add_device_impl(struct nlmsg* nlmsg, const char* type,
                                    const char* name, bool up)
{
  struct ifinfomsg hdr;
  memset(&hdr, 0, sizeof(hdr));
  if (up)
    hdr.ifi_flags = hdr.ifi_change = IFF_UP;
  netlink_init(nlmsg, RTM_NEWLINK, NLM_F_EXCL | NLM_F_CREATE, &hdr,
               sizeof(hdr));
  if (name)
    netlink_attr(nlmsg, IFLA_IFNAME, name, strlen(name));
  netlink_attr(nlmsg, IFLA_NUM_TX_QUEUES, &queue_count, sizeof(queue_count));
  netlink_attr(nlmsg, IFLA_NUM_RX_QUEUES, &queue_count, sizeof(queue_count));
  netlink_nest(nlmsg, IFLA_LINKINFO);
  netlink_attr(nlmsg, IFLA_INFO_KIND, type, strlen(type));
}

static void netlink_device_change(struct nlmsg* nlmsg, int sock,
                                  const char* name, bool up, const char* master,
                                  const void* mac, int macsize,
                                  const char* new_name)
{
  struct ifinfomsg hdr;
  memset(&hdr, 0, sizeof(hdr));
  if (up)
    hdr.ifi_flags = hdr.ifi_change = IFF_UP;
  hdr.ifi_index = if_nametoindex(name);
  netlink_init(nlmsg, RTM_NEWLINK, 0, &hdr, sizeof(hdr));
  if (new_name)
    netlink_attr(nlmsg, IFLA_IFNAME, new_name, strlen(new_name));
  if (master) {
    int ifindex = if_nametoindex(master);
    netlink_attr(nlmsg, IFLA_MASTER, &ifindex, sizeof(ifindex));
  }
  if (macsize)
    netlink_attr(nlmsg, IFLA_ADDRESS, mac, macsize);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static struct nlmsg nlmsg;

const int kInitNetNsFd = 201;

static long syz_init_net_socket(volatile long domain, volatile long type,
                                volatile long proto)
{
  return syscall(__NR_socket, domain, type, proto);
}

static long syz_genetlink_get_family_id(volatile long name,
                                        volatile long sock_arg)
{
  int fd = sock_arg;
  if (fd < 0) {
    fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
    if (fd == -1) {
      return -1;
    }
  }
  struct nlmsg nlmsg_tmp;
  int ret = netlink_query_family_id(&nlmsg_tmp, fd, (char*)name, false);
  if ((int)sock_arg < 0)
    close(fd);
  if (ret < 0) {
    return -1;
  }
  return ret;
}

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");
}

#define NL802154_CMD_SET_SHORT_ADDR 11
#define NL802154_ATTR_IFINDEX 3
#define NL802154_ATTR_SHORT_ADDR 10

static const char* setup_802154()
{
  const char* error = NULL;
  int sock_generic = -1;
  int sock_route = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock_route == -1) {
    error = "socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) failed";
    goto fail;
  }
  sock_generic = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
  if (sock_generic == -1) {
    error = "socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) failed";
    goto fail;
  }
  {
    int nl802154_family_id =
        netlink_query_family_id(&nlmsg, sock_generic, "nl802154", true);
    if (nl802154_family_id < 0) {
      error = "netlink_query_family_id failed";
      goto fail;
    }
    for (int i = 0; i < 2; i++) {
      char devname[] = "wpan0";
      devname[strlen(devname) - 1] += i;
      uint64_t hwaddr = 0xaaaaaaaaaaaa0002 + (i << 8);
      uint16_t shortaddr = 0xaaa0 + i;
      int ifindex = if_nametoindex(devname);
      struct genlmsghdr genlhdr;
      memset(&genlhdr, 0, sizeof(genlhdr));
      genlhdr.cmd = NL802154_CMD_SET_SHORT_ADDR;
      netlink_init(&nlmsg, nl802154_family_id, 0, &genlhdr, sizeof(genlhdr));
      netlink_attr(&nlmsg, NL802154_ATTR_IFINDEX, &ifindex, sizeof(ifindex));
      netlink_attr(&nlmsg, NL802154_ATTR_SHORT_ADDR, &shortaddr,
                   sizeof(shortaddr));
      if (netlink_send(&nlmsg, sock_generic) < 0) {
        error = "NL802154_CMD_SET_SHORT_ADDR failed";
        goto fail;
      }
      netlink_device_change(&nlmsg, sock_route, devname, true, 0, &hwaddr,
                            sizeof(hwaddr), 0);
      if (i == 0) {
        netlink_add_device_impl(&nlmsg, "lowpan", "lowpan0", false);
        netlink_done(&nlmsg);
        netlink_attr(&nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex));
        if (netlink_send(&nlmsg, sock_route) < 0) {
          error = "netlink: adding device lowpan0 type lowpan link wpan0";
          goto fail;
        }
      }
    }
  }
fail:
  close(sock_route);
  close(sock_generic);
  return error;
}

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)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  int i, call, thread;
  for (call = 0; call < 7; 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);
      event_timedwait(&th->done, 50);
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
}

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 (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[5] = {0xffffffffffffffff, 0x0, 0xffffffffffffffff,
                 0xffffffffffffffff, 0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    //  syz_init_net_socket$nl_generic arguments: [
    //    domain: const = 0x10 (8 bytes)
    //    type: const = 0x3 (8 bytes)
    //    proto: const = 0x10 (8 bytes)
    //  ]
    //  returns sock_nl_generic_init
    res = -1;
    res = syz_init_net_socket(/*domain=*/0x10, /*type=*/3, /*proto=*/0x10);
    if (res != -1)
      r[0] = res;
    break;
  case 1:
    //  syz_genetlink_get_family_id$nbd arguments: [
    //    name: ptr[in, buffer] {
    //      buffer: {6e 62 64 00} (length 0x4)
    //    }
    //    fd: sock_nl_generic_init (resource)
    //  ]
    //  returns genl_nbd_family_id
    memcpy((void*)0x200000000000, "nbd\000", 4);
    res = -1;
    res = syz_genetlink_get_family_id(/*name=*/0x200000000000, /*fd=*/-1);
    if (res != -1)
      r[1] = res;
    break;
  case 2:
    //  socketpair$nbd arguments: [
    //    domain: const = 0x1 (8 bytes)
    //    type: const = 0x1 (8 bytes)
    //    proto: const = 0x0 (4 bytes)
    //    fds: ptr[out, nbd_sock_pair] {
    //      nbd_sock_pair {
    //        client: sock_nbd_client (resource)
    //        server: sock_nbd_server (resource)
    //      }
    //    }
    //  ]
    res = syscall(__NR_socketpair, /*domain=*/1ul, /*type=*/1ul, /*proto=*/0,
                  /*fds=*/0x200000000100ul);
    if (res != -1)
      r[2] = *(uint32_t*)0x200000000100;
    break;
  case 3:
    //  sendmsg$NBD_CMD_CONNECT arguments: [
    //    fd: sock_nl_generic_init (resource)
    //    msg: ptr[in, msghdr_netlink[netlink_msg_t[genl_nbd_family_id,
    //    genlmsghdr_t[NBD_CMD_CONNECT], nbd_attr_policy]]] {
    //      msghdr_netlink[netlink_msg_t[genl_nbd_family_id,
    //      genlmsghdr_t[NBD_CMD_CONNECT], nbd_attr_policy]] {
    //        addr: nil
    //        addrlen: len = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //        vec: ptr[in, iovec[in, netlink_msg_t[genl_nbd_family_id,
    //        genlmsghdr_t[NBD_CMD_CONNECT], nbd_attr_policy]]] {
    //          iovec[in, netlink_msg_t[genl_nbd_family_id,
    //          genlmsghdr_t[NBD_CMD_CONNECT], nbd_attr_policy]] {
    //            addr: ptr[in, netlink_msg_t[genl_nbd_family_id,
    //            genlmsghdr_t[NBD_CMD_CONNECT], nbd_attr_policy]] {
    //              netlink_msg_t[genl_nbd_family_id,
    //              genlmsghdr_t[NBD_CMD_CONNECT], nbd_attr_policy] {
    //                len: len = 0x3c (4 bytes)
    //                type: genl_nbd_family_id (resource)
    //                flags: netlink_msg_flags = 0x1 (2 bytes)
    //                seq: int32 = 0xffffffff (4 bytes)
    //                pid: int32 = 0x0 (4 bytes)
    //                payload: genlmsghdr_t[NBD_CMD_CONNECT] {
    //                  cmd: const = 0x1 (1 bytes)
    //                  version: const = 0x0 (1 bytes)
    //                  reserved: const = 0x0 (2 bytes)
    //                }
    //                attrs: array[nbd_attr_policy] {
    //                  union nbd_attr_policy {
    //                    NBD_ATTR_SERVER_FLAGS:
    //                    nlattr_t[const[NBD_ATTR_SERVER_FLAGS, int16],
    //                    flags[nbd_server_flags, int64]] {
    //                      nla_len: offsetof = 0xc (2 bytes)
    //                      nla_type: const = 0x5 (2 bytes)
    //                      payload: nbd_server_flags = 0x16c (8 bytes)
    //                      size: buffer: {} (length 0x0)
    //                    }
    //                  }
    //                  union nbd_attr_policy {
    //                    NBD_ATTR_SIZE_BYTES:
    //                    nlattr_t[const[NBD_ATTR_SIZE_BYTES, int16], int64] {
    //                      nla_len: offsetof = 0xc (2 bytes)
    //                      nla_type: const = 0x2 (2 bytes)
    //                      payload: int64 = 0x7fff (8 bytes)
    //                      size: buffer: {} (length 0x0)
    //                    }
    //                  }
    //                  union nbd_attr_policy {
    //                    NBD_ATTR_SOCKETS: nlattr_tt[const[NBD_ATTR_SOCKETS,
    //                    int16:14], 0, 1, array[nlnest[NBD_SOCK_ITEM,
    //                    nlattr[NBD_SOCK_FD, sock_nbd_client]]]] {
    //                      nla_len: offsetof = 0x10 (2 bytes)
    //                      nla_type: const = 0x7 (1 bytes)
    //                      NLA_F_NET_BYTEORDER: const = 0x0 (0 bytes)
    //                      NLA_F_NESTED: const = 0x1 (1 bytes)
    //                      payload: array[nlattr_tt[const[NBD_SOCK_ITEM,
    //                      int16:14], 0, 1, nlattr[NBD_SOCK_FD,
    //                      sock_nbd_client]]] {
    //                        nlattr_tt[const[NBD_SOCK_ITEM, int16:14], 0, 1,
    //                        nlattr[NBD_SOCK_FD, sock_nbd_client]] {
    //                          nla_len: offsetof = 0xc (2 bytes)
    //                          nla_type: const = 0x1 (1 bytes)
    //                          NLA_F_NET_BYTEORDER: const = 0x0 (0 bytes)
    //                          NLA_F_NESTED: const = 0x1 (1 bytes)
    //                          payload: nlattr_t[const[NBD_SOCK_FD, int16],
    //                          sock_nbd_client] {
    //                            nla_len: offsetof = 0x8 (2 bytes)
    //                            nla_type: const = 0x1 (2 bytes)
    //                            payload: sock_nbd_client (resource)
    //                            size: buffer: {} (length 0x0)
    //                          }
    //                          size: buffer: {} (length 0x0)
    //                        }
    //                      }
    //                      size: buffer: {} (length 0x0)
    //                    }
    //                  }
    //                }
    //              }
    //            }
    //            len: len = 0x3c (8 bytes)
    //          }
    //        }
    //        vlen: const = 0x1 (8 bytes)
    //        ctrl: const = 0x0 (8 bytes)
    //        ctrllen: const = 0x0 (8 bytes)
    //        f: send_flags = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //      }
    //    }
    //    f: send_flags = 0x10 (8 bytes)
    //  ]
    *(uint64_t*)0x200000000240 = 0;
    *(uint32_t*)0x200000000248 = 0;
    *(uint64_t*)0x200000000250 = 0x200000001a80;
    *(uint64_t*)0x200000001a80 = 0x200000000140;
    *(uint32_t*)0x200000000140 = 0x3c;
    *(uint16_t*)0x200000000144 = r[1];
    *(uint16_t*)0x200000000146 = 1;
    *(uint32_t*)0x200000000148 = -1;
    *(uint32_t*)0x20000000014c = 0;
    *(uint8_t*)0x200000000150 = 1;
    *(uint8_t*)0x200000000151 = 0;
    *(uint16_t*)0x200000000152 = 0;
    *(uint16_t*)0x200000000154 = 0xc;
    *(uint16_t*)0x200000000156 = 5;
    *(uint64_t*)0x200000000158 = 0x16c;
    *(uint16_t*)0x200000000160 = 0xc;
    *(uint16_t*)0x200000000162 = 2;
    *(uint64_t*)0x200000000164 = 0x7fff;
    *(uint16_t*)0x20000000016c = 0x10;
    STORE_BY_BITMASK(uint16_t, , 0x20000000016e, 7, 0, 14);
    STORE_BY_BITMASK(uint16_t, , 0x20000000016f, 0, 6, 1);
    STORE_BY_BITMASK(uint16_t, , 0x20000000016f, 1, 7, 1);
    *(uint16_t*)0x200000000170 = 0xc;
    STORE_BY_BITMASK(uint16_t, , 0x200000000172, 1, 0, 14);
    STORE_BY_BITMASK(uint16_t, , 0x200000000173, 0, 6, 1);
    STORE_BY_BITMASK(uint16_t, , 0x200000000173, 1, 7, 1);
    *(uint16_t*)0x200000000174 = 8;
    *(uint16_t*)0x200000000176 = 1;
    *(uint32_t*)0x200000000178 = r[2];
    *(uint64_t*)0x200000001a88 = 0x3c;
    *(uint64_t*)0x200000000258 = 1;
    *(uint64_t*)0x200000000260 = 0;
    *(uint64_t*)0x200000000268 = 0;
    *(uint32_t*)0x200000000270 = 0;
    syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x200000000240ul,
            /*f=MSG_PROBE*/ 0x10ul);
    break;
  case 4:
    //  syz_init_net_socket$nl_generic arguments: [
    //    domain: const = 0x10 (8 bytes)
    //    type: const = 0x3 (8 bytes)
    //    proto: const = 0x10 (8 bytes)
    //  ]
    //  returns sock_nl_generic_init
    res = -1;
    res = syz_init_net_socket(/*domain=*/0x10, /*type=*/3, /*proto=*/0x10);
    if (res != -1)
      r[3] = res;
    break;
  case 5:
    //  syz_genetlink_get_family_id$nbd arguments: [
    //    name: ptr[in, buffer] {
    //      buffer: {6e 62 64 00} (length 0x4)
    //    }
    //    fd: sock_nl_generic_init (resource)
    //  ]
    //  returns genl_nbd_family_id
    memcpy((void*)0x200000000b00, "nbd\000", 4);
    res = -1;
    res = syz_genetlink_get_family_id(/*name=*/0x200000000b00, /*fd=*/-1);
    if (res != -1)
      r[4] = res;
    break;
  case 6:
    //  sendmsg$NBD_CMD_RECONFIGURE arguments: [
    //    fd: sock_nl_generic_init (resource)
    //    msg: ptr[in, msghdr_netlink[netlink_msg_t[genl_nbd_family_id,
    //    genlmsghdr_t[NBD_CMD_RECONFIGURE], nbd_attr_policy]]] {
    //      msghdr_netlink[netlink_msg_t[genl_nbd_family_id,
    //      genlmsghdr_t[NBD_CMD_RECONFIGURE], nbd_attr_policy]] {
    //        addr: nil
    //        addrlen: len = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //        vec: ptr[in, iovec[in, netlink_msg_t[genl_nbd_family_id,
    //        genlmsghdr_t[NBD_CMD_RECONFIGURE], nbd_attr_policy]]] {
    //          iovec[in, netlink_msg_t[genl_nbd_family_id,
    //          genlmsghdr_t[NBD_CMD_RECONFIGURE], nbd_attr_policy]] {
    //            addr: ptr[inout, array[ANYUNION]] {
    //              array[ANYUNION] {
    //                union ANYUNION {
    //                  ANYBLOB: buffer: {34 00 00 00} (length 0x4)
    //                }
    //                union ANYUNION {
    //                  ANYRES16: ANYRES16 (resource)
    //                }
    //                union ANYUNION {
    //                  ANYBLOB: buffer: {01 00 25 bd 70 00 fc db df 25 03 00 00
    //                  00 0c 00 05 00 20 01 00 00 00 00 00 00 08 00 01 00 00 00
    //                  00 00 0c 00 02 00 07 00 00 00 00 00 00 00 0d 7e b1 2a e9
    //                  90 f0 34 9f c8 37 6a bc aa 18 72 36 e8 7e 15 20 a1 06 85
    //                  b4 79 4b 8f 43 94 39 64 db 89 49 18 8f 5a 2e 89 63 76 3c
    //                  94 b0 17 18 d4 20 e6 6e 24 d9 3a 95 5d 6c a8 91 ec 75 db
    //                  33 9e 9c e8 c6 0e 2e 8e f9 10 0e 41 79 37 db da a7 88 e9
    //                  6e 78 32 df 24 05 30 ce 27 3e e8 32 fe 79 21 64 6f 71 47
    //                  f0 4d 33 f3 34 2b 28 91 39 83 91 64 6d 44 d4 7e 17 0d d9
    //                  e0 da d6 7e cf 4d 06 b2 24 a3 02 88 a6 a1 a5 ab 44 90 c9
    //                  5a 23 e3 32 5b b4 ee 68 5d 10 ae be 75 94 7c 1d e5 e5 61
    //                  2e 48 64 ac b5 4d 91 6f 49 ef b3 66 d8 7a 7d b5 cf de 11
    //                  c8 ec b4 a5 7a b9 cd ce 4d 69 08 c9 8d 82 94 dc c2 25}
    //                  (length 0xf0)
    //                }
    //              }
    //            }
    //            len: len = 0x34 (8 bytes)
    //          }
    //        }
    //        vlen: const = 0x1 (8 bytes)
    //        ctrl: const = 0x0 (8 bytes)
    //        ctrllen: const = 0x0 (8 bytes)
    //        f: send_flags = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //      }
    //    }
    //    f: send_flags = 0x80000 (8 bytes)
    //  ]
    *(uint64_t*)0x200000000c40 = 0;
    *(uint32_t*)0x200000000c48 = 0;
    *(uint64_t*)0x200000000c50 = 0x200000000c00;
    *(uint64_t*)0x200000000c00 = 0x200000000900;
    memcpy((void*)0x200000000900, "4\000\000\000", 4);
    *(uint16_t*)0x200000000904 = r[4];
    memcpy((void*)0x200000000906,
           "\x01\x00\x25\xbd\x70\x00\xfc\xdb\xdf\x25\x03\x00\x00\x00\x0c\x00"
           "\x05\x00\x20\x01\x00\x00\x00\x00\x00\x00\x08\x00\x01\x00\x00\x00"
           "\x00\x00\x0c\x00\x02\x00\x07\x00\x00\x00\x00\x00\x00\x00\x0d\x7e"
           "\xb1\x2a\xe9\x90\xf0\x34\x9f\xc8\x37\x6a\xbc\xaa\x18\x72\x36\xe8"
           "\x7e\x15\x20\xa1\x06\x85\xb4\x79\x4b\x8f\x43\x94\x39\x64\xdb\x89"
           "\x49\x18\x8f\x5a\x2e\x89\x63\x76\x3c\x94\xb0\x17\x18\xd4\x20\xe6"
           "\x6e\x24\xd9\x3a\x95\x5d\x6c\xa8\x91\xec\x75\xdb\x33\x9e\x9c\xe8"
           "\xc6\x0e\x2e\x8e\xf9\x10\x0e\x41\x79\x37\xdb\xda\xa7\x88\xe9\x6e"
           "\x78\x32\xdf\x24\x05\x30\xce\x27\x3e\xe8\x32\xfe\x79\x21\x64\x6f"
           "\x71\x47\xf0\x4d\x33\xf3\x34\x2b\x28\x91\x39\x83\x91\x64\x6d\x44"
           "\xd4\x7e\x17\x0d\xd9\xe0\xda\xd6\x7e\xcf\x4d\x06\xb2\x24\xa3\x02"
           "\x88\xa6\xa1\xa5\xab\x44\x90\xc9\x5a\x23\xe3\x32\x5b\xb4\xee\x68"
           "\x5d\x10\xae\xbe\x75\x94\x7c\x1d\xe5\xe5\x61\x2e\x48\x64\xac\xb5"
           "\x4d\x91\x6f\x49\xef\xb3\x66\xd8\x7a\x7d\xb5\xcf\xde\x11\xc8\xec"
           "\xb4\xa5\x7a\xb9\xcd\xce\x4d\x69\x08\xc9\x8d\x82\x94\xdc\xc2\x25",
           240);
    *(uint64_t*)0x200000000c08 = 0x34;
    *(uint64_t*)0x200000000c58 = 1;
    *(uint64_t*)0x200000000c60 = 0;
    *(uint64_t*)0x200000000c68 = 0;
    *(uint32_t*)0x200000000c70 = 0;
    syscall(__NR_sendmsg, /*fd=*/r[3], /*msg=*/0x200000000c40ul,
            /*f=*/0x80000ul);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  if ((reason = setup_802154())) {
    fprintf(stderr, "reproducer setup failed: 802154 injection: %s\n", reason);
    exit(1);
  }
  loop();
  return 0;
}