// https://syzkaller.appspot.com/bug?id=baff5bfd0c148e6a6552e815fba942c1ac5e61b0
// 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 <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 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 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;

#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$auto_kernfs_file_fops_kernfs_internal arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2f 73 79 73 2f 64 65 76 69 63 65 73 2f 73 79 73 74 65 6d 2f
  //      63 70 75 2f 63 70 75 31 2f 6f 6e 6c 69 6e 65 00} (length 0x24)
  //    }
  //    flags: open_flags = 0x62 (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd_kernfs_file_fops_kernfs_internal
  memcpy((void*)0x200000000080, "/sys/devices/system/cpu/cpu1/online\000", 36);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                /*file=*/0x200000000080ul, /*flags=O_CREAT|O_RDWR|0x20*/ 0x62,
                /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  write$auto arguments: [
  //    fd: fd (resource)
  //    buf: ptr[in, buffer] {
  //      buffer: {30 00 a6 cc 0d 91 51 55 9d 49 da 1b ad b1 9e c8 54 74 a8 94
  //      9c 8a e2 c7 63 4f 4d b6 a3 2c 21 6f 9e b0 ad 54 fb 52 a1 59 94 56 5b
  //      38 04 63 df 3a 5d d9 94 f8 46 bb a2 bb 3e ad 65 18 bd e2 1c 89 4f 4f
  //      5d 65 5b da ac dd 1a dd dd b9 6f 1a ab d5 ef 60 d8 9c f7 3f 3a 1a c6
  //      32 91 31 65 fd 15 88 0f 9a d5 a7 14 08 7d 3b ab 74 d1 61 6b e5 98 ea
  //      e3 7d 10 ab 0c 5f 19 9b 11 b2 35 56 55 4b 93 cd 64 17 e4 ac 41 a5 5b
  //      08 b8 3b 02 74 63 66 06 fb 44 91 ca 47 da 61 3a 6b 5b 72 06 eb f0 c4
  //      cb 10 ae c8 e9 75 9f de 4b a5 8e ff 7f d0 55 56 11 cb dd 81 be de 0c
  //      2f 06 28 1d a5 c5 9b b2 96 05 60 e7 d5 59 07 c1 e9 28 95 df 48 f4 0b
  //      f3 43 52 6e 7a c2 13 3c f0 0b 1f 14 f3 d0 f2 d1 4c 21 81 ea 83 a0 0d
  //      7c 25 bf 02 74 72 67 9a e7 00 85 5a 06 3f 12 98 0f 29 07 f4 aa 05 c0
  //      a0 72 d2 85 8d 48 d0 3e ca fc 35 01 95 4f 34 ca 95 1d 83 ec 0a 44 8e
  //      fb ce d1 77 15 3a e9 81 2f 42 23 c6 a1 fa 2d 1b 8c 72 92 6e 4d a1 3b
  //      e4 70 64 24 d7 1b 0b 82 0d 0c d0 48 71 d9 0d 88 23 89 8d cd 1e 87 4e
  //      ee 4f 8d 4f e9 fc 91 a1 a8 48 52 2b 07 b7 52 09 0a 2b 7f d5 48 90 47
  //      3d 9a 0d b1 30 17 6e 1b f8 0b 11 0b bb c8 5e a4 e2 05 91 7c 12 33 c3
  //      3a fd ee 04 61 c8 12 ce a2 12 cb 8c 87 66 eb 47 51 e9 96 d5 45 13 61
  //      b7 05 37 3c 26 e0 94 a7 fb 9d 3b fa b1 1b 34 61 2c 27 b2 59 6d e1 3a
  //      bf 8c 73 06 a3 75 8d 21 0a 80 2d 9a bb 3b f4 f3 e1 97 fc 38 ff a7 5c
  //      8b f9 95 10 24 ef 1a 20 23 62 fb fe e9 06 66 4b 30 dd 84 54 2c fa b5
  //      00 83 64 bb 61 d7 0a 92 6c df 41 4e 9d cb 96 c7 e8 e6 8b 43 eb c7 45
  //      5a c8 1a 81 6e 66 09 5a 2d 73 5a 13 6e ec a9 bf d0 24 b9 d8 00 00 00
  //      00 00 00 00} (length 0x1fb)
  //    }
  //    count: intptr = 0x5 (8 bytes)
  //  ]
  memcpy((void*)0x2000000002c0,
         "0\000\246\314\r\221QU\235I\332\033\255\261\236\310Tt\250\224\234\212"
         "\342\307cOM\266\243,!o\236\260\255T\373R\241Y\224V[8\004c\337:]"
         "\331\224\370F\273\242\273>\255e\030\275\342\034\211OO]e["
         "\332\254\335\032\335\335\271o\032\253\325\357`\330\234\367?:"
         "\032\3062\2211e\375\025\210\017\232\325\247\024\b};"
         "\253t\321ak\345\230\352\343}\020\253\f_"
         "\031\233\021\2625VUK\223\315d\027\344\254A\245[\b\270;"
         "\002tcf\006\373D\221\312G\332a:k["
         "r\006\353\360\304\313\020\256\310\351u\237\336K\245\216\377\177\320UV"
         "\021\313\335\201\276\336\f/"
         "\006(\035\245\305\233\262\226\005`\347\325Y\a\301\351("
         "\225\337H\364\v\363CRnz\302\023<\360\v\037\024\363\320\362\321L!"
         "\201\352\203\240\r|%\277\002trg\232\347\000\205Z\006?\022\230\017)"
         "\a\364\252\005\300\240r\322\205\215H\320>"
         "\312\3745\001\225O4\312\225\035\203\354\nD\216\373\316\321w\025:"
         "\351\201/"
         "B#\306\241\372-\033\214r\222nM\241;\344pd$"
         "\327\033\v\202\r\f\320Hq\331\r\210#"
         "\211\215\315\036\207N\356O\215O\351\374\221\241\250HR+\a\267R\t\n+"
         "\177\325H\220G=\232\r\2610\027n\033\370\v\021\v\273\310^"
         "\244\342\005\221|\0223\303:"
         "\375\356\004a\310\022\316\242\022\313\214\207f\353GQ\351\226\325E\023"
         "a\267\0057<&\340\224\247\373\235;\372\261\0334a,\'\262Ym\341:"
         "\277\214s\006\243u\215!\n\200-\232\273;"
         "\364\363\341\227\3748\377\247\\\213\371\225\020$\357\032 "
         "#b\373\376\351\006fK0\335\204T,"
         "\372\265\000\203d\273a\327\n\222l\337AN\235\313\226\307\350\346\213C"
         "\353\307EZ\310\032\201nf\tZ-sZ\023n\354\251\277\320$"
         "\271\330\000\000\000\000\000\000\000",
         507);
  syscall(__NR_write, /*fd=*/r[0], /*buf=*/0x2000000002c0ul, /*count=*/5ul);
  //  mmap$auto arguments: [
  //    addr: intptr = 0x0 (8 bytes)
  //    len: intptr = 0x2020009 (8 bytes)
  //    prot: intptr = 0x3 (8 bytes)
  //    flags: intptr = 0xeb1 (8 bytes)
  //    fd: fd (resource)
  //    off: intptr = 0x8000 (8 bytes)
  //  ]
  syscall(__NR_mmap, /*addr=*/0ul, /*len=*/0x2020009ul, /*prot=*/3ul,
          /*flags=*/0xeb1ul, /*fd=*/0xfffffffa, /*off=*/0x8000ul);
  //  openat$auto_proc_oom_adj_operations_base arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2f 70 72 6f 63 2f 73 65 6c 66 2f 6f 6f 6d 5f 61 64 6a 00}
  //      (length 0x13)
  //    }
  //    flags: open_flags = 0x48402 (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd_proc_oom_adj_operations_base
  memcpy((void*)0x200000000000, "/proc/self/oom_adj\000", 19);
  res = syscall(
      __NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x200000000000ul,
      /*flags=O_NOATIME|O_LARGEFILE|O_APPEND|O_RDWR*/ 0x48402, /*mode=*/0);
  if (res != -1)
    r[1] = res;
  //  read$auto arguments: [
  //    fd: fd (resource)
  //    buf: nil
  //    count: intptr = 0x1f40 (8 bytes)
  //  ]
  syscall(__NR_read, /*fd=*/r[1], /*buf=*/0ul, /*count=*/0x1f40ul);
  //  writev$auto arguments: [
  //    fd: fd (resource)
  //    vec: ptr[in, iovec$auto] {
  //      iovec$auto {
  //        iov_base: nil
  //        iov_len: intptr = 0x7111 (8 bytes)
  //      }
  //    }
  //    vlen: intptr = 0x8 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000100 = 0;
  *(uint64_t*)0x200000000108 = 0x7111;
  syscall(__NR_writev, /*fd=*/3, /*vec=*/0x200000000100ul, /*vlen=*/8ul);
  //  prctl$auto arguments: [
  //    option: int32 = 0x3e (4 bytes)
  //    arg2: intptr = 0x1 (8 bytes)
  //    arg3: pid (resource)
  //    arg4: intptr = 0x1 (8 bytes)
  //    arg5: intptr = 0x0 (8 bytes)
  //  ]
  //  returns fd
  syscall(__NR_prctl, /*option=*/0x3e, /*arg2=*/1ul, /*arg3=*/0, /*arg4=*/1ul,
          /*arg5=*/0ul);
}
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);
  for (procid = 0; procid < 4; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      loop();
    }
  }
  sleep(1000000);
  return 0;
}