// https://syzkaller.appspot.com/bug?id=8e030beda49b8e549cfeb17ed369414ed27331e6
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <sched.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/resource.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#include <linux/capability.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;
}

#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;
}

#define MAX_FDS 30

static long syz_open_procfs(volatile long a0, volatile long a1)
{
  char buf[128];
  memset(buf, 0, sizeof(buf));
  if (a0 == 0) {
    snprintf(buf, sizeof(buf), "/proc/self/%s", (char*)a1);
  } else if (a0 == -1) {
    snprintf(buf, sizeof(buf), "/proc/thread-self/%s", (char*)a1);
  } else {
    snprintf(buf, sizeof(buf), "/proc/self/task/%d/%s", (int)a0, (char*)a1);
  }
  int fd = open(buf, O_RDWR);
  if (fd == -1)
    fd = open(buf, O_RDONLY);
  return fd;
}

static void setup_gadgetfs();
static void setup_binderfs();
static void setup_fusectl();
static void sandbox_common_mount_tmpfs(void)
{
  write_file("/proc/sys/fs/mount-max", "100000");
  if (mkdir("./syz-tmp", 0777))
    exit(1);
  if (mount("", "./syz-tmp", "tmpfs", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot", 0777))
    exit(1);
  if (mkdir("./syz-tmp/newroot/dev", 0700))
    exit(1);
  unsigned bind_mount_flags = MS_BIND | MS_REC | MS_PRIVATE;
  if (mount("/dev", "./syz-tmp/newroot/dev", NULL, bind_mount_flags, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/proc", 0700))
    exit(1);
  if (mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/selinux", 0700))
    exit(1);
  const char* selinux_path = "./syz-tmp/newroot/selinux";
  if (mount("/selinux", selinux_path, NULL, bind_mount_flags, NULL)) {
    if (errno != ENOENT)
      exit(1);
    if (mount("/sys/fs/selinux", selinux_path, NULL, bind_mount_flags, NULL) &&
        errno != ENOENT)
      exit(1);
  }
  if (mkdir("./syz-tmp/newroot/sys", 0700))
    exit(1);
  if (mount("/sys", "./syz-tmp/newroot/sys", 0, bind_mount_flags, NULL))
    exit(1);
  if (mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/proc/sys/fs/binfmt_misc",
            "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, bind_mount_flags,
            NULL) &&
      errno != ENOENT)
    exit(1);
  if (mkdir("./syz-tmp/newroot/syz-inputs", 0700))
    exit(1);
  if (mount("/syz-inputs", "./syz-tmp/newroot/syz-inputs", NULL,
            bind_mount_flags | MS_RDONLY, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mkdir("./syz-tmp/pivot", 0777))
    exit(1);
  if (syscall(SYS_pivot_root, "./syz-tmp", "./syz-tmp/pivot")) {
    if (chdir("./syz-tmp"))
      exit(1);
  } else {
    if (chdir("/"))
      exit(1);
    if (umount2("./pivot", MNT_DETACH))
      exit(1);
  }
  if (chroot("./newroot"))
    exit(1);
  if (chdir("/"))
    exit(1);
  setup_gadgetfs();
  setup_binderfs();
  setup_fusectl();
}

static void setup_gadgetfs()
{
  if (mkdir("/dev/gadgetfs", 0777)) {
  }
  if (mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL)) {
  }
}

static void setup_fusectl()
{
  if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) {
  }
}

static void setup_binderfs()
{
  if (mkdir("/dev/binderfs", 0777)) {
  }
  if (mount("binder", "/dev/binderfs", "binder", 0, NULL)) {
  }
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  if (getppid() == 1)
    exit(1);
  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = (200 << 20);
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 32 << 20;
  setrlimit(RLIMIT_MEMLOCK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 136 << 20;
  setrlimit(RLIMIT_FSIZE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_STACK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 128 << 20;
  setrlimit(RLIMIT_CORE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 256;
  setrlimit(RLIMIT_NOFILE, &rlim);
  if (unshare(CLONE_NEWNS)) {
  }
  if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL)) {
  }
  if (unshare(CLONE_NEWIPC)) {
  }
  if (unshare(0x02000000)) {
  }
  if (unshare(CLONE_NEWUTS)) {
  }
  if (unshare(CLONE_SYSVSEM)) {
  }
  typedef struct {
    const char* name;
    const char* value;
  } sysctl_t;
  static const sysctl_t sysctls[] = {
      {"/proc/sys/kernel/shmmax", "16777216"},
      {"/proc/sys/kernel/shmall", "536870912"},
      {"/proc/sys/kernel/shmmni", "1024"},
      {"/proc/sys/kernel/msgmax", "8192"},
      {"/proc/sys/kernel/msgmni", "1024"},
      {"/proc/sys/kernel/msgmnb", "1024"},
      {"/proc/sys/kernel/sem", "1024 1048576 500 1024"},
  };
  unsigned i;
  for (i = 0; i < sizeof(sysctls) / sizeof(sysctls[0]); i++)
    write_file(sysctls[i].name, sysctls[i].value);
}

static int wait_for_loop(int pid)
{
  if (pid < 0)
    exit(1);
  int status = 0;
  while (waitpid(-1, &status, __WALL) != pid) {
  }
  return WEXITSTATUS(status);
}

static void drop_caps(void)
{
  struct __user_cap_header_struct cap_hdr = {};
  struct __user_cap_data_struct cap_data[2] = {};
  cap_hdr.version = _LINUX_CAPABILITY_VERSION_3;
  cap_hdr.pid = getpid();
  if (syscall(SYS_capget, &cap_hdr, &cap_data))
    exit(1);
  const int drop = (1 << CAP_SYS_PTRACE) | (1 << CAP_SYS_NICE);
  cap_data[0].effective &= ~drop;
  cap_data[0].permitted &= ~drop;
  cap_data[0].inheritable &= ~drop;
  if (syscall(SYS_capset, &cap_hdr, &cap_data))
    exit(1);
}

static int do_sandbox_none(void)
{
  if (unshare(CLONE_NEWPID)) {
  }
  int pid = fork();
  if (pid != 0)
    return wait_for_loop(pid);
  sandbox_common();
  drop_caps();
  if (unshare(CLONE_NEWNET)) {
  }
  write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535");
  sandbox_common_mount_tmpfs();
  loop();
  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");
}

static void close_fds()
{
  for (int fd = 3; fd < MAX_FDS; fd++)
    close(fd);
}

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();
      close_fds();
      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[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  open arguments: [
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 62 75 73 00} (length 0x6)
  //    }
  //    flags: open_flags = 0x14927e (8 bytes)
  //    mode: open_mode = 0x0 (8 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000180, "./bus\000", 6);
  res =
      syscall(__NR_open, /*file=*/0x200000000180ul,
              /*flags=O_TRUNC|O_SYNC|O_NOATIME|O_LARGEFILE|O_CREAT|O_RDWR|0x3c*/
              0x14927eul, /*mode=*/0ul);
  if (res != -1)
    r[0] = res;
  //  mmap arguments: [
  //    addr: VMA[0x600000]
  //    len: len = 0x600000 (8 bytes)
  //    prot: mmap_prot = 0x27fffff (8 bytes)
  //    flags: mmap_flags = 0x4002011 (8 bytes)
  //    fd: fd (resource)
  //    offset: intptr = 0x3000 (8 bytes)
  //  ]
  syscall(
      __NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x600000ul,
      /*prot=PROT_GROWSUP|PROT_SEM|PROT_WRITE|PROT_READ|PROT_EXEC|0x7ffff0*/
      0x27ffffful,
      /*flags=MAP_UNINITIALIZED|MAP_LOCKED|MAP_FIXED|MAP_SHARED*/ 0x4002011ul,
      /*fd=*/r[0], /*offset=*/0x3000ul);
  //  fallocate arguments: [
  //    fd: fd (resource)
  //    mode: fallocate_mode = 0x0 (8 bytes)
  //    off: intptr = 0x0 (8 bytes)
  //    len: intptr = 0x1000f4 (8 bytes)
  //  ]
  syscall(__NR_fallocate, /*fd=*/r[0], /*mode=*/0ul, /*off=*/0ul,
          /*len=*/0x1000f4ul);
  //  perf_event_open arguments: [
  //    attr: nil
  //    pid: pid (resource)
  //    cpu: intptr = 0x0 (8 bytes)
  //    group: fd_perf (resource)
  //    flags: perf_flags = 0x9 (8 bytes)
  //  ]
  //  returns fd_perf
  syscall(__NR_perf_event_open, /*attr=*/0ul, /*pid=*/0, /*cpu=*/0ul,
          /*group=*/(intptr_t)-1,
          /*flags=PERF_FLAG_FD_CLOEXEC|PERF_FLAG_FD_NO_GROUP*/ 9ul);
  //  socket arguments: [
  //    domain: socket_domain = 0x11 (8 bytes)
  //    type: socket_type = 0xa (8 bytes)
  //    proto: int32 = 0x0 (4 bytes)
  //  ]
  //  returns sock
  syscall(__NR_socket, /*domain=AF_PACKET*/ 0x11ul, /*type=SOCK_PACKET*/ 0xaul,
          /*proto=*/0);
  //  write$vga_arbiter arguments: [
  //    fd: fd_vga_arbiter (resource)
  //    data: nil
  //    len: bytesize = 0x0 (8 bytes)
  //  ]
  syscall(__NR_write, /*fd=*/(intptr_t)-1, /*data=*/0ul, /*len=*/0ul);
  //  syz_open_procfs arguments: [
  //    pid: pid (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {6d 61 70 73 00} (length 0x5)
  //    }
  //  ]
  //  returns fd
  memcpy((void*)0x2000000001c0, "maps\000", 5);
  res = -1;
  res = syz_open_procfs(/*pid=*/0, /*file=*/0x2000000001c0);
  if (res != -1)
    r[1] = res;
  //  sendmsg$IPCTNL_MSG_CT_NEW arguments: [
  //    fd: sock_nl_netfilter (resource)
  //    msg: ptr[in,
  //    msghdr_netlink[netlink_msg_netfilter_t[NFNL_SUBSYS_CTNETLINK,
  //    IPCTNL_MSG_CT_NEW, ct_nla_policy]]] {
  //      msghdr_netlink[netlink_msg_netfilter_t[NFNL_SUBSYS_CTNETLINK,
  //      IPCTNL_MSG_CT_NEW, ct_nla_policy]] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in,
  //        netlink_msg_netfilter_t[NFNL_SUBSYS_CTNETLINK, IPCTNL_MSG_CT_NEW,
  //        ct_nla_policy]]] {
  //          iovec[in, netlink_msg_netfilter_t[NFNL_SUBSYS_CTNETLINK,
  //          IPCTNL_MSG_CT_NEW, ct_nla_policy]] {
  //            addr: ptr[in, netlink_msg_netfilter_tt[NFNL_SUBSYS_CTNETLINK,
  //            IPCTNL_MSG_CT_NEW, array[ct_nla_policy]]] {
  //              netlink_msg_netfilter_tt[NFNL_SUBSYS_CTNETLINK,
  //              IPCTNL_MSG_CT_NEW, array[ct_nla_policy]] {
  //                len: len = 0x2c (4 bytes)
  //                type: const = 0x0 (1 bytes)
  //                subsys: const = 0x1 (1 bytes)
  //                flags: netlink_netfilter_msg_flags = 0x401 (2 bytes)
  //                seq: const = 0x0 (4 bytes)
  //                pid: const = 0x0 (4 bytes)
  //                hdr: nfgenmsg {
  //                  nfgen_family: nfproto = 0x2 (1 bytes)
  //                  version: const = 0x0 (1 bytes)
  //                  res_id: int16be = 0x0 (2 bytes)
  //                }
  //                attrs: array[ct_nla_policy] {
  //                  union ct_nla_policy {
  //                    CTA_TUPLE_ORIG: nlattr_tt[const[CTA_TUPLE_ORIG,
  //                    int16:14], 0, 1, array[tuple_nla_policy]] {
  //                      nla_len: offsetof = 0x18 (2 bytes)
  //                      nla_type: const = 0x1 (1 bytes)
  //                      NLA_F_NET_BYTEORDER: const = 0x0 (0 bytes)
  //                      NLA_F_NESTED: const = 0x1 (1 bytes)
  //                      payload: array[tuple_nla_policy] {
  //                        union tuple_nla_policy {
  //                          CTA_TUPLE_IP: nlattr_tt[const[CTA_TUPLE_IP,
  //                          int16:14], 0, 1, cta_ip_nla_policy] {
  //                            nla_len: offsetof = 0x14 (2 bytes)
  //                            nla_type: const = 0x1 (1 bytes)
  //                            NLA_F_NET_BYTEORDER: const = 0x0 (0 bytes)
  //                            NLA_F_NESTED: const = 0x1 (1 bytes)
  //                            payload: union cta_ip_nla_policy {
  //                              ipv4: cta_ip_nla_policy$ipv4 {
  //                                CTA_IP_V4_SRC: nlattr_t[const[CTA_IP_V4_SRC,
  //                                int16], ipv4_addr] {
  //                                  nla_len: offsetof = 0x8 (2 bytes)
  //                                  nla_type: const = 0x1 (2 bytes)
  //                                  payload: union ipv4_addr {
  //                                    remote: ipv4_addr_t[const[187, int8]] {
  //                                      a0: const = 0xac (1 bytes)
  //                                      a1: const = 0x14 (1 bytes)
  //                                      a2: const = 0x14 (1 bytes)
  //                                      a3: const = 0xbb (1 bytes)
  //                                    }
  //                                  }
  //                                  size: buffer: {} (length 0x0)
  //                                }
  //                                CTA_IP_V4_DST: nlattr_t[const[CTA_IP_V4_DST,
  //                                int16], ipv4_addr] {
  //                                  nla_len: offsetof = 0x8 (2 bytes)
  //                                  nla_type: const = 0x2 (2 bytes)
  //                                  payload: union ipv4_addr {
  //                                    remote: ipv4_addr_t[const[187, int8]] {
  //                                      a0: const = 0xac (1 bytes)
  //                                      a1: const = 0x3 (1 bytes)
  //                                      a2: const = 0x14 (1 bytes)
  //                                      a3: const = 0xbb (1 bytes)
  //                                    }
  //                                  }
  //                                  size: buffer: {} (length 0x0)
  //                                }
  //                              }
  //                            }
  //                            size: buffer: {} (length 0x0)
  //                          }
  //                        }
  //                      }
  //                      size: buffer: {} (length 0x0)
  //                    }
  //                  }
  //                }
  //              }
  //            }
  //            len: len = 0x2c (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 = 0x0 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000300 = 0;
  *(uint32_t*)0x200000000308 = 0;
  *(uint64_t*)0x200000000310 = 0x2000000000c0;
  *(uint64_t*)0x2000000000c0 = 0x2000000001c0;
  *(uint32_t*)0x2000000001c0 = 0x2c;
  *(uint8_t*)0x2000000001c4 = 0;
  *(uint8_t*)0x2000000001c5 = 1;
  *(uint16_t*)0x2000000001c6 = 0x401;
  *(uint32_t*)0x2000000001c8 = 0;
  *(uint32_t*)0x2000000001cc = 0;
  *(uint8_t*)0x2000000001d0 = 2;
  *(uint8_t*)0x2000000001d1 = 0;
  *(uint16_t*)0x2000000001d2 = htobe16(0);
  *(uint16_t*)0x2000000001d4 = 0x18;
  STORE_BY_BITMASK(uint16_t, , 0x2000000001d6, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000000001d7, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000000001d7, 1, 7, 1);
  *(uint16_t*)0x2000000001d8 = 0x14;
  STORE_BY_BITMASK(uint16_t, , 0x2000000001da, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000000001db, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000000001db, 1, 7, 1);
  *(uint16_t*)0x2000000001dc = 8;
  *(uint16_t*)0x2000000001de = 1;
  *(uint8_t*)0x2000000001e0 = 0xac;
  *(uint8_t*)0x2000000001e1 = 0x14;
  *(uint8_t*)0x2000000001e2 = 0x14;
  *(uint8_t*)0x2000000001e3 = 0xbb;
  *(uint16_t*)0x2000000001e4 = 8;
  *(uint16_t*)0x2000000001e6 = 2;
  *(uint8_t*)0x2000000001e8 = 0xac;
  *(uint8_t*)0x2000000001e9 = 3;
  *(uint8_t*)0x2000000001ea = 0x14;
  *(uint8_t*)0x2000000001eb = 0xbb;
  *(uint64_t*)0x2000000000c8 = 0x2c;
  *(uint64_t*)0x200000000318 = 1;
  *(uint64_t*)0x200000000320 = 0;
  *(uint64_t*)0x200000000328 = 0;
  *(uint32_t*)0x200000000330 = 0;
  syscall(__NR_sendmsg, /*fd=*/(intptr_t)-1, /*msg=*/0x200000000300ul,
          /*f=*/0ul);
  //  ioctl$KVM_SET_USER_MEMORY_REGION arguments: [
  //    fd: fd_kvmvm (resource)
  //    cmd: const = 0xc0686611 (4 bytes)
  //    arg: ptr[in, kvm_userspace_memory_region] {
  //      kvm_userspace_memory_region {
  //        slot: kvm_mem_slots = 0x68 (4 bytes)
  //        flags: kvm_mem_region_flags = 0x0 (4 bytes)
  //        paddr: kvm_guest_addrs = 0x17 (8 bytes)
  //        size: len = 0x2000 (8 bytes)
  //        addr: VMA[0x2000]
  //      }
  //    }
  //  ]
  *(uint32_t*)0x200000000180 = 0x68;
  *(uint32_t*)0x200000000184 = 0;
  *(uint64_t*)0x200000000188 = 0x17;
  *(uint64_t*)0x200000000190 = 0x2000;
  *(uint64_t*)0x200000000198 = 0x200000ffd000;
  syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0xc0686611,
          /*arg=*/0x200000000180ul);
  //  sendmmsg arguments: [
  //    fd: sock (resource)
  //    mmsg: nil
  //    vlen: len = 0x0 (8 bytes)
  //    f: send_flags = 0x0 (8 bytes)
  //  ]
  syscall(__NR_sendmmsg, /*fd=*/(intptr_t)-1, /*mmsg=*/0ul, /*vlen=*/0ul,
          /*f=*/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;
  do_sandbox_none();
  return 0;
}