// https://syzkaller.appspot.com/bug?id=589750799c766bf27e861c20829c193ccbd98fa9
// 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 <setjmp.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/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/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 unsigned long long procid;

static __thread int clone_ongoing;
static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
  if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) {
    exit(sig);
  }
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0;
  int valid = addr < prog_start || addr > prog_end;
  if (skip && valid) {
    _longjmp(segv_env, 1);
  }
  exit(sig);
}

static void install_segv_handler(void)
{
  struct sigaction sa;
  memset(&sa, 0, sizeof(sa));
  sa.sa_handler = SIG_IGN;
  syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8);
  syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8);
  memset(&sa, 0, sizeof(sa));
  sa.sa_sigaction = segv_handler;
  sa.sa_flags = SA_NODEFER | SA_SIGINFO;
  sigaction(SIGSEGV, &sa, NULL);
  sigaction(SIGBUS, &sa, NULL);
}

#define NONFAILING(...)                                                        \
  ({                                                                           \
    int ok = 1;                                                                \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    if (_setjmp(segv_env) == 0) {                                              \
      __VA_ARGS__;                                                             \
    } else                                                                     \
      ok = 0;                                                                  \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    ok;                                                                        \
  })

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);
}

#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))))

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 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_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;

#define FS_IOC_SETFLAGS _IOW('f', 2, long)
static void remove_dir(const char* dir)
{
  int iter = 0;
  DIR* dp = 0;
  const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW;

retry:
  while (umount2(dir, umount_flags) == 0) {
  }
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exit(1);
    }
    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);
    while (umount2(filename, umount_flags) == 0) {
    }
    struct stat st;
    if (lstat(filename, &st))
      exit(1);
    if (S_ISDIR(st.st_mode)) {
      remove_dir(filename);
      continue;
    }
    int i;
    for (i = 0;; i++) {
      if (unlink(filename) == 0)
        break;
      if (errno == EPERM) {
        int fd = open(filename, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno != EBUSY || i > 100)
        exit(1);
      if (umount2(filename, umount_flags))
        exit(1);
    }
  }
  closedir(dp);
  for (int i = 0;; i++) {
    if (rmdir(dir) == 0)
      break;
    if (i < 100) {
      if (errno == EPERM) {
        int fd = open(dir, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno == EBUSY) {
        if (umount2(dir, umount_flags))
          exit(1);
        continue;
      }
      if (errno == ENOTEMPTY) {
        if (iter < 100) {
          iter++;
          goto retry;
        }
      }
    }
    exit(1);
  }
}

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");
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

#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;
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

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);
      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;
    }
    remove_dir(cwdbuf);
  }
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  openat$tun arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 6e 65 74 2f 74 75 6e 00} (length 0xd)
  //    }
  //    flags: open_flags = 0x1c1842 (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd_tun
  NONFAILING(memcpy((void*)0x200000000240, "/dev/net/tun\000", 13));
  res = syscall(
      __NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x200000000240ul,
      /*flags=O_SYNC|O_NONBLOCK|O_NOATIME|O_CREAT|O_CLOEXEC|0x2*/ 0x1c1842,
      /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  ioctl$TUNSETIFF arguments: [
  //    fd: fd_tun (resource)
  //    cmd: const = 0x400454ca (4 bytes)
  //    arg: ptr[in, ifreq_dev_t[devnames, flags[tun_setiff_flags, int16]]] {
  //      ifreq_dev_t[devnames, flags[tun_setiff_flags, int16]] {
  //        ifr_ifrn: buffer: {73 79 7a 6b 61 6c 6c 65 72 30 00 00 00 00 00 00}
  //        (length 0x10) elem: tun_setiff_flags = 0x7101 (2 bytes) pad = 0x0
  //        (22 bytes)
  //      }
  //    }
  //  ]
  NONFAILING(
      memcpy((void*)0x200000000040, "syzkaller0\000\000\000\000\000\000", 16));
  NONFAILING(*(uint16_t*)0x200000000050 = 0x7101);
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x400454ca,
          /*arg=*/0x200000000040ul);
  //  socket$kcm arguments: [
  //    domain: const = 0x11 (8 bytes)
  //    type: kcm_socket_type = 0x2 (8 bytes)
  //    proto: const = 0x0 (4 bytes)
  //  ]
  //  returns sock_kcm
  res = syscall(__NR_socket, /*domain=*/0x11ul, /*type=SOCK_DGRAM*/ 2ul,
                /*proto=*/0);
  if (res != -1)
    r[1] = res;
  //  setsockopt$sock_attach_bpf arguments: [
  //    fd: sock (resource)
  //    level: const = 0x107 (4 bytes)
  //    optname: const = 0x12 (4 bytes)
  //    optval: nil
  //    optlen: len = 0x4 (8 bytes)
  //  ]
  syscall(__NR_setsockopt, /*fd=*/r[1], /*level=*/0x107, /*optname=*/0x12,
          /*optval=*/0ul, /*optlen=*/4ul);
  //  perf_event_open arguments: [
  //    attr: ptr[in, perf_event_attr] {
  //      perf_event_attr {
  //        type: perf_event_type = 0x2 (4 bytes)
  //        size: len = 0x80 (4 bytes)
  //        config0: int8 = 0x29 (1 bytes)
  //        config1: int8 = 0x1 (1 bytes)
  //        config2: int8 = 0x0 (1 bytes)
  //        config3: int8 = 0x0 (1 bytes)
  //        config4: const = 0x0 (4 bytes)
  //        sample_freq: int64 = 0x4 (8 bytes)
  //        sample_type: perf_sample_type = 0x510 (8 bytes)
  //        read_format: perf_read_format = 0x15 (8 bytes)
  //        disabled: int64 = 0x0 (0 bytes)
  //        inherit: int64 = 0x0 (0 bytes)
  //        pinned: int64 = 0x0 (0 bytes)
  //        exclusive: int64 = 0x0 (0 bytes)
  //        exclude_user: int64 = 0x0 (0 bytes)
  //        exclude_kernel: int64 = 0x0 (0 bytes)
  //        exclude_hv: int64 = 0x0 (0 bytes)
  //        exclude_idle: int64 = 0x0 (0 bytes)
  //        mmap: int64 = 0x0 (0 bytes)
  //        comm: int64 = 0x0 (0 bytes)
  //        freq: int64 = 0x0 (0 bytes)
  //        inherit_stat: int64 = 0x0 (0 bytes)
  //        enable_on_exec: int64 = 0x0 (0 bytes)
  //        task: int64 = 0x0 (0 bytes)
  //        watermark: int64 = 0x0 (0 bytes)
  //        precise_ip: int64 = 0x0 (0 bytes)
  //        mmap_data: int64 = 0x0 (0 bytes)
  //        sample_id_all: int64 = 0x0 (0 bytes)
  //        exclude_host: int64 = 0x0 (0 bytes)
  //        exclude_guest: int64 = 0x0 (0 bytes)
  //        exclude_callchain_kernel: int64 = 0x0 (0 bytes)
  //        exclude_callchain_user: int64 = 0x0 (0 bytes)
  //        mmap2: int64 = 0x0 (0 bytes)
  //        comm_exec: int64 = 0x0 (0 bytes)
  //        use_clockid: int64 = 0x0 (0 bytes)
  //        context_switch: int64 = 0x0 (0 bytes)
  //        write_backward: int64 = 0x0 (0 bytes)
  //        namespaces: int64 = 0x0 (0 bytes)
  //        ksymbol: int64 = 0x0 (0 bytes)
  //        bpf_event: int64 = 0x0 (0 bytes)
  //        aux_output: int64 = 0x0 (0 bytes)
  //        cgroup: int64 = 0x0 (0 bytes)
  //        text_poke: int64 = 0x0 (0 bytes)
  //        build_id: int64 = 0x0 (0 bytes)
  //        inherit_thread: int64 = 0x0 (0 bytes)
  //        remove_on_exec: int64 = 0x0 (0 bytes)
  //        sigtrap: int64 = 0x0 (0 bytes)
  //        __reserved_1: const = 0x0 (8 bytes)
  //        wakeup_events: int32 = 0xfffffffe (4 bytes)
  //        bp_type: perf_bp_type = 0x2 (4 bytes)
  //        bp_config: union perf_bp_config {
  //          perf_bp: perf_bp {
  //            bp_addr: nil
  //            bp_len: perf_bp_lens = 0x0 (8 bytes)
  //          }
  //        }
  //        branch_sample_type: perf_branch_sample_type = 0x0 (8 bytes)
  //        sample_regs_user: int64 = 0x10000 (8 bytes)
  //        sample_stack_user: int32 = 0x0 (4 bytes)
  //        clockid: clock_type = 0x5 (4 bytes)
  //        sample_regs_intr: int64 = 0x8 (8 bytes)
  //        aux_watermark: int32 = 0x20005 (4 bytes)
  //        sample_max_stack: int16 = 0x0 (2 bytes)
  //        __reserved_2: const = 0x0 (2 bytes)
  //        aux_sample_size: int32 = 0x0 (4 bytes)
  //        __reserved_3: const = 0x0 (4 bytes)
  //        sig_data: int64 = 0x20000006 (8 bytes)
  //      }
  //    }
  //    pid: pid (resource)
  //    cpu: intptr = 0xffffffffffffffff (8 bytes)
  //    group: fd_perf (resource)
  //    flags: perf_flags = 0x2 (8 bytes)
  //  ]
  //  returns fd_perf
  NONFAILING(*(uint32_t*)0x200000000140 = 2);
  NONFAILING(*(uint32_t*)0x200000000144 = 0x80);
  NONFAILING(*(uint8_t*)0x200000000148 = 0x29);
  NONFAILING(*(uint8_t*)0x200000000149 = 1);
  NONFAILING(*(uint8_t*)0x20000000014a = 0);
  NONFAILING(*(uint8_t*)0x20000000014b = 0);
  NONFAILING(*(uint32_t*)0x20000000014c = 0);
  NONFAILING(*(uint64_t*)0x200000000150 = 4);
  NONFAILING(*(uint64_t*)0x200000000158 = 0x510);
  NONFAILING(*(uint64_t*)0x200000000160 = 0x15);
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 0, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 1, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 2, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 3, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 4, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 5, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 6, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 7, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 8, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 9, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 10, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 11, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 12, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 13, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 14, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 15, 2));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 17, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 18, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 19, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 20, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 21, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 22, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 23, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 24, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 25, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 26, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 27, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 28, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 29, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 30, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 31, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 32, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 33, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 34, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 35, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 36, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 37, 1));
  NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000168, 0, 38, 26));
  NONFAILING(*(uint32_t*)0x200000000170 = 0xfffffffe);
  NONFAILING(*(uint32_t*)0x200000000174 = 2);
  NONFAILING(*(uint64_t*)0x200000000178 = 0);
  NONFAILING(*(uint64_t*)0x200000000180 = 0);
  NONFAILING(*(uint64_t*)0x200000000188 = 0);
  NONFAILING(*(uint64_t*)0x200000000190 = 0x10000);
  NONFAILING(*(uint32_t*)0x200000000198 = 0);
  NONFAILING(*(uint32_t*)0x20000000019c = 5);
  NONFAILING(*(uint64_t*)0x2000000001a0 = 8);
  NONFAILING(*(uint32_t*)0x2000000001a8 = 0x20005);
  NONFAILING(*(uint16_t*)0x2000000001ac = 0);
  NONFAILING(*(uint16_t*)0x2000000001ae = 0);
  NONFAILING(*(uint32_t*)0x2000000001b0 = 0);
  NONFAILING(*(uint32_t*)0x2000000001b4 = 0);
  NONFAILING(*(uint64_t*)0x2000000001b8 = 0x20000006);
  syscall(__NR_perf_event_open, /*attr=*/0x200000000140ul, /*pid=*/0,
          /*cpu=*/(intptr_t)-1, /*group=*/(intptr_t)-1,
          /*flags=PERF_FLAG_FD_OUTPUT*/ 2ul);
  //  sendmsg$inet arguments: [
  //    fd: sock (resource)
  //    msg: ptr[in, msghdr_inet] {
  //      msghdr_inet {
  //        msg_name: ptr[in, sockaddr_in] {
  //          sockaddr_in {
  //            family: const = 0x2 (2 bytes)
  //            port: int16be = 0x0 (2 bytes)
  //            addr: union ipv4_addr {
  //              initdev: ipv4_addr_initdev {
  //                a0: const = 0xac (1 bytes)
  //                a1: const = 0x1e (1 bytes)
  //                a2: int8 = 0x0 (1 bytes)
  //                a3: proc = 0x0 (1 bytes)
  //              }
  //            }
  //            pad = 0x0 (8 bytes)
  //          }
  //        }
  //        msg_namelen: len = 0x10 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        msg_iov: ptr[in, array[iovec[in, array[int8]]]] {
  //          array[iovec[in, array[int8]]] {
  //            iovec[in, array[int8]] {
  //              addr: ptr[in, buffer] {
  //                buffer: {} (length 0x0)
  //              }
  //              len: len = 0x0 (8 bytes)
  //            }
  //          }
  //        }
  //        msg_iovlen: len = 0x1 (8 bytes)
  //        msg_control: nil
  //        msg_controllen: bytesize = 0x0 (8 bytes)
  //        msg_flags: const = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0xfc (8 bytes)
  //  ]
  NONFAILING(*(uint64_t*)0x200000000600 = 0x2000000001c0);
  NONFAILING(*(uint16_t*)0x2000000001c0 = 2);
  NONFAILING(*(uint16_t*)0x2000000001c2 = htobe16(0));
  NONFAILING(*(uint8_t*)0x2000000001c4 = 0xac);
  NONFAILING(*(uint8_t*)0x2000000001c5 = 0x1e);
  NONFAILING(*(uint8_t*)0x2000000001c6 = 0);
  NONFAILING(*(uint8_t*)0x2000000001c7 = 1 + procid * 1);
  NONFAILING(*(uint32_t*)0x200000000608 = 0x10);
  NONFAILING(*(uint64_t*)0x200000000610 = 0x200000000380);
  NONFAILING(*(uint64_t*)0x200000000380 = 0x200000000640);
  NONFAILING(*(uint64_t*)0x200000000388 = 0);
  NONFAILING(*(uint64_t*)0x200000000618 = 1);
  NONFAILING(*(uint64_t*)0x200000000620 = 0);
  NONFAILING(*(uint64_t*)0x200000000628 = 0);
  NONFAILING(*(uint32_t*)0x200000000630 = 0);
  syscall(__NR_sendmsg, /*fd=*/(intptr_t)-1, /*msg=*/0x200000000600ul,
          /*f=MSG_PROBE|MSG_EOR|MSG_DONTWAIT|MSG_DONTROUTE|0x28*/ 0xfcul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  if ((reason = setup_802154()))
    printf("the reproducer may not work as expected: 802154 injection setup "
           "failed: %s\n",
           reason);
  install_segv_handler();
  for (procid = 0; procid < 4; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      loop();
    }
  }
  sleep(1000000);
  return 0;
}