// https://syzkaller.appspot.com/bug?id=139f57528e83bd37af23a2327fed7a6f356b52ef
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <arpa/inet.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <net/if.h>
#include <netinet/in.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.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>

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;

static long syz_open_dev(volatile long a0, volatile long a1, volatile long a2)
{
  if (a0 == 0xc || a0 == 0xb) {
    char buf[128];
    sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1,
            (uint8_t)a2);
    return open(buf, O_RDWR, 0);
  } else {
    unsigned long nb = a1;
    char buf[1024];
    char* hash;
    strncpy(buf, (char*)a0, sizeof(buf) - 1);
    buf[sizeof(buf) - 1] = 0;
    while ((hash = strchr(buf, '#'))) {
      *hash = '0' + (char)(nb % 10);
      nb /= 10;
    }
    return open(buf, a2 & ~O_CREAT, 0);
  }
}

#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;
}

uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

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);
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  openat$sysfs arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    dir: ptr[in, buffer] {
  //      buffer: {2f 73 79 73 2f 70 6f 77 65 72 2f 72 65 73 75 6d 65} (length
  //      0x11)
  //    }
  //    flags: open_flags = 0x141a82 (4 bytes)
  //    mode: open_mode = 0x0 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x2000000002c0, "/sys/power/resume", 17);
  res = syscall(
      __NR_openat, /*fd=*/0xffffffffffffff9cul, /*dir=*/0x2000000002c0ul,
      /*flags=O_TRUNC|O_SYNC|O_NONBLOCK|O_NOATIME|O_EXCL|O_RDWR*/ 0x141a82,
      /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  write$cgroup_int arguments: [
  //    fd: fd_cgroup_int (resource)
  //    buf: ptr[in, int64] {
  //      int64 = 0x900 (18 bytes)
  //    }
  //    len: bytesize = 0x12 (8 bytes)
  //  ]
  sprintf((char*)0x200000000040, "0x%016llx", (long long)0x900);
  syscall(__NR_write, /*fd=*/r[0], /*buf=*/0x200000000040ul, /*len=*/0x12ul);
  //  syz_open_dev$loop arguments: [
  //    dev: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 6c 6f 6f 70 23 00} (length 0xb)
  //    }
  //    id: intptr = 0x7 (8 bytes)
  //    flags: open_flags = 0x180862 (8 bytes)
  //  ]
  //  returns fd_loop
  memcpy((void*)0x200000000240, "/dev/loop#\000", 11);
  res = -1;
  res = syz_open_dev(
      /*dev=*/0x200000000240, /*id=*/7,
      /*flags=O_NONBLOCK|O_CREAT|O_CLOEXEC|O_RDWR|0x100020*/ 0x180862);
  if (res != -1)
    r[1] = res;
  //  openat$sysfs arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    dir: ptr[in, buffer] {
  //      buffer: {2f 73 79 73 2f 70 6f 77 65 72 2f 70 6d 5f 66 72 65 65 7a 65
  //      5f 74 69 6d 65 6f 75 74} (length 0x1c)
  //    }
  //    flags: open_flags = 0x82802 (4 bytes)
  //    mode: open_mode = 0xf (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000000, "/sys/power/pm_freeze_timeout", 28);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                /*dir=*/0x200000000000ul,
                /*flags=O_NONBLOCK|O_CLOEXEC|FASYNC|O_RDWR*/ 0x82802,
                /*mode=S_IXOTH|S_IWOTH|S_IROTH|S_IXGRP*/ 0xf);
  if (res != -1)
    r[2] = res;
  //  ioctl$LOOP_CONFIGURE arguments: [
  //    fd: fd_loop (resource)
  //    cmd: const = 0x4c0a (4 bytes)
  //    arg: ptr[in, loop_config] {
  //      loop_config {
  //        fd: fd_loop (resource)
  //        block_size: int32 = 0x0 (4 bytes)
  //        info: loop_info64 {
  //          lo_device: const = 0x0 (8 bytes)
  //          lo_inode: const = 0x0 (8 bytes)
  //          lo_rdevice: const = 0x0 (8 bytes)
  //          lo_offset: int64 = 0x6 (8 bytes)
  //          lo_sizelimit: int64 = 0x4000000000000ffd (8 bytes)
  //          lo_number: const = 0x0 (4 bytes)
  //          lo_enc_type: lo_encrypt_type = 0x0 (4 bytes)
  //          lo_enc_key_size: int32 = 0x1e (4 bytes)
  //          lo_flags: lo_flags = 0xc (4 bytes)
  //          lo_file_name: buffer: {fa f9 83 17 e5 a1 14 99 89 fc 8d be 43 ea
  //          6a cc 96 e3 a2 50 3d c3 bd 3f e3 7d 58 12 8b ba d0 09 9c eb dc 25
  //          f5 ab 60 c9 e6 d6 80 f9 85 88 1a 7b ed a9 d6 90 98 c8 b5 34 46 4c
  //          51 6b dd 8a 0f 35} (length 0x40) lo_crypt_name: buffer: {32 d8 cc
  //          26 f7 06 1a 74 df 2c fc 06 c8 9f 3d 9e 23 4b 30 c5 09 97 d3 be f4
  //          09 ff 21 76 ff 7b fe 55 cd 4a 5d 83 cd 4a 52 4b d3 ff e7 0c 7f 3f
  //          80 0b 2f 7b 6a a5 4c c5 0a 1f ca ed 1e 83 1f a7 9a} (length 0x40)
  //          lo_enc_key: buffer: {67 52 37 60 fd 40 f7 8d 2c fc 03 d8 1a 8c a5
  //          5b a1 39 c0 18 02 c4 da e4 16 2e 43 ac 61 b7 ad 33} (length 0x20)
  //          lo_init: array[int64] {
  //            int64 = 0x2 (8 bytes)
  //            int64 = 0x7 (8 bytes)
  //          }
  //        }
  //        reserved: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //        00 00} (length 0x40)
  //      }
  //    }
  //  ]
  *(uint32_t*)0x200000000080 = r[2];
  *(uint32_t*)0x200000000084 = 0;
  *(uint64_t*)0x200000000088 = 0;
  *(uint64_t*)0x200000000090 = 0;
  *(uint64_t*)0x200000000098 = 0;
  *(uint64_t*)0x2000000000a0 = 6;
  *(uint64_t*)0x2000000000a8 = 0x4000000000000ffd;
  *(uint32_t*)0x2000000000b0 = 0;
  *(uint32_t*)0x2000000000b4 = 0;
  *(uint32_t*)0x2000000000b8 = 0x1e;
  *(uint32_t*)0x2000000000bc = 0xc;
  memcpy((void*)0x2000000000c0,
         "\xfa\xf9\x83\x17\xe5\xa1\x14\x99\x89\xfc\x8d\xbe\x43\xea\x6a\xcc\x96"
         "\xe3\xa2\x50\x3d\xc3\xbd\x3f\xe3\x7d\x58\x12\x8b\xba\xd0\x09\x9c\xeb"
         "\xdc\x25\xf5\xab\x60\xc9\xe6\xd6\x80\xf9\x85\x88\x1a\x7b\xed\xa9\xd6"
         "\x90\x98\xc8\xb5\x34\x46\x4c\x51\x6b\xdd\x8a\x0f\x35",
         64);
  memcpy((void*)0x200000000100,
         "\x32\xd8\xcc\x26\xf7\x06\x1a\x74\xdf\x2c\xfc\x06\xc8\x9f\x3d\x9e\x23"
         "\x4b\x30\xc5\x09\x97\xd3\xbe\xf4\x09\xff\x21\x76\xff\x7b\xfe\x55\xcd"
         "\x4a\x5d\x83\xcd\x4a\x52\x4b\xd3\xff\xe7\x0c\x7f\x3f\x80\x0b\x2f\x7b"
         "\x6a\xa5\x4c\xc5\x0a\x1f\xca\xed\x1e\x83\x1f\xa7\x9a",
         64);
  memcpy((void*)0x200000000140,
         "\x67\x52\x37\x60\xfd\x40\xf7\x8d\x2c\xfc\x03\xd8\x1a\x8c\xa5\x5b\xa1"
         "\x39\xc0\x18\x02\xc4\xda\xe4\x16\x2e\x43\xac\x61\xb7\xad\x33",
         32);
  *(uint64_t*)0x200000000160 = 2;
  *(uint64_t*)0x200000000168 = 7;
  memset((void*)0x200000000170, 0, 64);
  syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x4c0a, /*arg=*/0x200000000080ul);
  return 0;
}