// https://syzkaller.appspot.com/bug?id=d4463a2d3563cdc5823b22d4e115144d0af7e88c
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

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

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 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[4] = {0xffffffffffffffff, 0x0, 0xffffffffffffffff,
                 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  socket arguments: [
  //    domain: socket_domain = 0x2a (8 bytes)
  //    type: socket_type = 0x2 (8 bytes)
  //    proto: int32 = 0x0 (4 bytes)
  //  ]
  //  returns sock
  res = syscall(__NR_socket, /*domain=AF_QIPCRTR*/ 0x2aul,
                /*type=SOCK_DGRAM*/ 2ul, /*proto=*/0);
  if (res != -1)
    r[0] = res;
  //  socket$netlink arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: netlink_proto = 0x0 (4 bytes)
  //  ]
  //  returns sock_netlink
  syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0);
  //  getsockname$packet arguments: [
  //    fd: sock_packet (resource)
  //    addr: ptr[out, sockaddr_ll] {
  //      sockaddr_ll {
  //        sll_family: const = 0x11 (2 bytes)
  //        sll_protocol: packet_protocols = 0x0 (2 bytes)
  //        sll_ifindex: ifindex (resource)
  //        sll_hatype: const = 0x1 (2 bytes)
  //        sll_pkttype: int8 = 0x0 (1 bytes)
  //        sll_halen: const = 0x6 (1 bytes)
  //        sll_addr: union mac_addr {
  //          broadcast: buffer: (DirOut)
  //        }
  //        pad: buffer: (DirOut)
  //      }
  //    }
  //    addrlen: ptr[inout, len] {
  //      len = 0x14 (4 bytes)
  //    }
  //  ]
  *(uint32_t*)0x200000001480 = 0x14;
  res = syscall(__NR_getsockname, /*fd=*/r[0], /*addr=*/0x200000000200ul,
                /*addrlen=*/0x200000001480ul);
  if (res != -1)
    r[1] = *(uint32_t*)0x200000000204;
  //  sendmsg$nl_route_sched arguments: [
  //    fd: sock_nl_route (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_route_sched]] {
  //      msghdr_netlink[netlink_msg_route_sched] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_route_sched]] {
  //          iovec[in, netlink_msg_route_sched] {
  //            addr: ptr[in, netlink_msg_route_sched] {
  //              union netlink_msg_route_sched {
  //                newqdisc: netlink_msg_t[const[RTM_NEWQDISC, int16],
  //                tcmsg[AF_UNSPEC], rtm_tca_policy] {
  //                  len: len = 0x78 (4 bytes)
  //                  type: const = 0x24 (2 bytes)
  //                  flags: netlink_msg_flags = 0xf0b (2 bytes)
  //                  seq: int32 = 0x70bd2a (4 bytes)
  //                  pid: int32 = 0x2001 (4 bytes)
  //                  payload: tcmsg[AF_UNSPEC] {
  //                    family: const = 0x0 (1 bytes)
  //                    tcm__pad1: const = 0x0 (1 bytes)
  //                    tcm__pad2: const = 0x0 (2 bytes)
  //                    ifindex: ifindex (resource)
  //                    tcm_handle: tcm_handle {
  //                      minor: tcm_handle_offsets = 0x0 (2 bytes)
  //                      major: tcm_handle_offsets = 0x0 (2 bytes)
  //                    }
  //                    tcm_parent: tcm_handle {
  //                      minor: tcm_handle_offsets = 0xffff (2 bytes)
  //                      major: tcm_handle_offsets = 0xffff (2 bytes)
  //                    }
  //                    tcm_info: tcm_handle {
  //                      minor: tcm_handle_offsets = 0x5 (2 bytes)
  //                      major: tcm_handle_offsets = 0xd (2 bytes)
  //                    }
  //                  }
  //                  attrs: array[rtm_tca_policy] {
  //                    union rtm_tca_policy {
  //                      qdisc_kind_options: union qdisc_kind_options {
  //                        q_sfq: tca_kind_options_t["sfq", tc_sfq_qopt_v1] {
  //                          TCA_KIND: nlattr_t[const[TCA_KIND, int16],
  //                          string["sfq"]] {
  //                            nla_len: offsetof = 0x8 (2 bytes)
  //                            nla_type: const = 0x1 (2 bytes)
  //                            payload: buffer: {73 66 71 00} (length 0x4)
  //                            size: buffer: {} (length 0x0)
  //                          }
  //                          TCA_OPTIONS: nlattr_t[const[TCA_OPTIONS, int16],
  //                          tc_sfq_qopt_v1] {
  //                            nla_len: offsetof = 0x4c (2 bytes)
  //                            nla_type: const = 0x2 (2 bytes)
  //                            payload: tc_sfq_qopt_v1 {
  //                              v0: tc_sfq_qopt {
  //                                quantum: int32 = 0xff (4 bytes)
  //                                perturb_period: int32 = 0xec2 (4 bytes)
  //                                limit: int32 = 0x5 (4 bytes)
  //                                divisor: int32 = 0x2 (4 bytes)
  //                                flows: int32 = 0x400 (4 bytes)
  //                              }
  //                              depth: int32 = 0x10000 (4 bytes)
  //                              headdrop: int32 = 0x1 (4 bytes)
  //                              limit: int32 = 0x7ff (4 bytes)
  //                              qth_min: int32 = 0x6 (4 bytes)
  //                              qth_max: int32 = 0xe (4 bytes)
  //                              Wlog: int8 = 0x14 (1 bytes)
  //                              Plog: int8 = 0x1f (1 bytes)
  //                              Scell_log: int8 = 0x1b (1 bytes)
  //                              flag: int8 = 0x6 (1 bytes)
  //                              max_P: int32 = 0x2 (4 bytes)
  //                              stats: tc_sfqred_stats {
  //                                prob_drop: int32 = 0x6 (4 bytes)
  //                                forced_drop: int32 = 0x19d (4 bytes)
  //                                prob_mark: int32 = 0xa9 (4 bytes)
  //                                forced_mark: int32 = 0x8 (4 bytes)
  //                                prob_mark_head: int32 = 0x7743 (4 bytes)
  //                                forced_mark_head: int32 = 0xfd1 (4 bytes)
  //                              }
  //                            }
  //                            size: buffer: {} (length 0x0)
  //                          }
  //                        }
  //                      }
  //                    }
  //                  }
  //                }
  //              }
  //            }
  //            len: len = 0x78 (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*)0x2000000002c0 = 0;
  *(uint32_t*)0x2000000002c8 = 0;
  *(uint64_t*)0x2000000002d0 = 0x200000000280;
  *(uint64_t*)0x200000000280 = 0x200000000180;
  *(uint32_t*)0x200000000180 = 0x78;
  *(uint16_t*)0x200000000184 = 0x24;
  *(uint16_t*)0x200000000186 = 0xf0b;
  *(uint32_t*)0x200000000188 = 0x70bd2a;
  *(uint32_t*)0x20000000018c = 0x2001;
  *(uint8_t*)0x200000000190 = 0;
  *(uint8_t*)0x200000000191 = 0;
  *(uint16_t*)0x200000000192 = 0;
  *(uint32_t*)0x200000000194 = r[1];
  *(uint16_t*)0x200000000198 = 0;
  *(uint16_t*)0x20000000019a = 0;
  *(uint16_t*)0x20000000019c = -1;
  *(uint16_t*)0x20000000019e = -1;
  *(uint16_t*)0x2000000001a0 = 5;
  *(uint16_t*)0x2000000001a2 = 0xd;
  *(uint16_t*)0x2000000001a4 = 8;
  *(uint16_t*)0x2000000001a6 = 1;
  memcpy((void*)0x2000000001a8, "sfq\000", 4);
  *(uint16_t*)0x2000000001ac = 0x4c;
  *(uint16_t*)0x2000000001ae = 2;
  *(uint32_t*)0x2000000001b0 = 0xff;
  *(uint32_t*)0x2000000001b4 = 0xec2;
  *(uint32_t*)0x2000000001b8 = 5;
  *(uint32_t*)0x2000000001bc = 2;
  *(uint32_t*)0x2000000001c0 = 0x400;
  *(uint32_t*)0x2000000001c4 = 0x10000;
  *(uint32_t*)0x2000000001c8 = 1;
  *(uint32_t*)0x2000000001cc = 0x7ff;
  *(uint32_t*)0x2000000001d0 = 6;
  *(uint32_t*)0x2000000001d4 = 0xe;
  *(uint8_t*)0x2000000001d8 = 0x14;
  *(uint8_t*)0x2000000001d9 = 0x1f;
  *(uint8_t*)0x2000000001da = 0x1b;
  *(uint8_t*)0x2000000001db = 6;
  *(uint32_t*)0x2000000001dc = 2;
  *(uint32_t*)0x2000000001e0 = 6;
  *(uint32_t*)0x2000000001e4 = 0x19d;
  *(uint32_t*)0x2000000001e8 = 0xa9;
  *(uint32_t*)0x2000000001ec = 8;
  *(uint32_t*)0x2000000001f0 = 0x7743;
  *(uint32_t*)0x2000000001f4 = 0xfd1;
  *(uint64_t*)0x200000000288 = 0x78;
  *(uint64_t*)0x2000000002d8 = 1;
  *(uint64_t*)0x2000000002e0 = 0;
  *(uint64_t*)0x2000000002e8 = 0;
  *(uint32_t*)0x2000000002f0 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x2000000002c0ul, /*f=*/0ul);
  //  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: nil
  //            len: len = 0x0 (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 = 0;
  *(uint64_t*)0x2000000000c8 = 0;
  *(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);
  //  sendmsg$nl_route_sched arguments: [
  //    fd: sock_nl_route (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_route_sched]] {
  //      msghdr_netlink[netlink_msg_route_sched] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_route_sched]] {
  //          iovec[in, netlink_msg_route_sched] {
  //            addr: ptr[in, netlink_msg_route_sched] {
  //              union netlink_msg_route_sched {
  //                newtfilter: netlink_msg_t[const[RTM_NEWTFILTER, int16],
  //                tcmsg[AF_UNSPEC], filter_policy] {
  //                  len: len = 0x38 (4 bytes)
  //                  type: const = 0x2c (2 bytes)
  //                  flags: netlink_msg_flags = 0xd27 (2 bytes)
  //                  seq: int32 = 0x70bd2d (4 bytes)
  //                  pid: int32 = 0x0 (4 bytes)
  //                  payload: tcmsg[AF_UNSPEC] {
  //                    family: const = 0x0 (1 bytes)
  //                    tcm__pad1: const = 0x0 (1 bytes)
  //                    tcm__pad2: const = 0x0 (2 bytes)
  //                    ifindex: ifindex (resource)
  //                    tcm_handle: tcm_handle {
  //                      minor: tcm_handle_offsets = 0xe (2 bytes)
  //                      major: tcm_handle_offsets = 0x7 (2 bytes)
  //                    }
  //                    tcm_parent: tcm_handle {
  //                      minor: tcm_handle_offsets = 0x0 (2 bytes)
  //                      major: tcm_handle_offsets = 0x0 (2 bytes)
  //                    }
  //                    tcm_info: tcm_handle {
  //                      minor: tcm_handle_offsets = 0x5 (2 bytes)
  //                      major: tcm_handle_offsets = 0xffff (2 bytes)
  //                    }
  //                  }
  //                  attrs: array[filter_policy] {
  //                    union filter_policy {
  //                      filter_kind_options: union filter_kind_options {
  //                        f_fw: tca_kind_options_t["fw", array[fw_policy]] {
  //                          TCA_KIND: nlattr_t[const[TCA_KIND, int16],
  //                          string["fw"]] {
  //                            nla_len: offsetof = 0x7 (2 bytes)
  //                            nla_type: const = 0x1 (2 bytes)
  //                            payload: buffer: {66 77 00} (length 0x3)
  //                            size: buffer: {} (length 0x0)
  //                            pad = 0x0 (1 bytes)
  //                          }
  //                          TCA_OPTIONS: nlattr_t[const[TCA_OPTIONS, int16],
  //                          array[fw_policy]] {
  //                            nla_len: offsetof = 0xc (2 bytes)
  //                            nla_type: const = 0x2 (2 bytes)
  //                            payload: array[fw_policy] {
  //                              union fw_policy {
  //                                TCA_FW_CLASSID:
  //                                nlattr_t[const[TCA_FW_CLASSID, int16],
  //                                tcm_handle] {
  //                                  nla_len: offsetof = 0x8 (2 bytes)
  //                                  nla_type: const = 0x1 (2 bytes)
  //                                  payload: tcm_handle {
  //                                    minor: tcm_handle_offsets = 0x7 (2
  //                                    bytes) major: tcm_handle_offsets = 0x8
  //                                    (2 bytes)
  //                                  }
  //                                  size: buffer: {} (length 0x0)
  //                                }
  //                              }
  //                            }
  //                            size: buffer: {} (length 0x0)
  //                          }
  //                        }
  //                      }
  //                    }
  //                  }
  //                }
  //              }
  //            }
  //            len: len = 0x38 (8 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x24044801 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x4000 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000340 = 0;
  *(uint32_t*)0x200000000348 = 0;
  *(uint64_t*)0x200000000350 = 0x2000000000c0;
  *(uint64_t*)0x2000000000c0 = 0x2000000014c0;
  *(uint32_t*)0x2000000014c0 = 0x38;
  *(uint16_t*)0x2000000014c4 = 0x2c;
  *(uint16_t*)0x2000000014c6 = 0xd27;
  *(uint32_t*)0x2000000014c8 = 0x70bd2d;
  *(uint32_t*)0x2000000014cc = 0;
  *(uint8_t*)0x2000000014d0 = 0;
  *(uint8_t*)0x2000000014d1 = 0;
  *(uint16_t*)0x2000000014d2 = 0;
  *(uint32_t*)0x2000000014d4 = r[1];
  *(uint16_t*)0x2000000014d8 = 0xe;
  *(uint16_t*)0x2000000014da = 7;
  *(uint16_t*)0x2000000014dc = 0;
  *(uint16_t*)0x2000000014de = 0;
  *(uint16_t*)0x2000000014e0 = 5;
  *(uint16_t*)0x2000000014e2 = -1;
  *(uint16_t*)0x2000000014e4 = 7;
  *(uint16_t*)0x2000000014e6 = 1;
  memcpy((void*)0x2000000014e8, "fw\000", 3);
  *(uint16_t*)0x2000000014ec = 0xc;
  *(uint16_t*)0x2000000014ee = 2;
  *(uint16_t*)0x2000000014f0 = 8;
  *(uint16_t*)0x2000000014f2 = 1;
  *(uint16_t*)0x2000000014f4 = 7;
  *(uint16_t*)0x2000000014f6 = 8;
  *(uint64_t*)0x2000000000c8 = 0x38;
  *(uint64_t*)0x200000000358 = 1;
  *(uint64_t*)0x200000000360 = 0;
  *(uint64_t*)0x200000000368 = 0;
  *(uint32_t*)0x200000000370 = 0x24044801;
  syscall(__NR_sendmsg, /*fd=*/(intptr_t)-1, /*msg=*/0x200000000340ul,
          /*f=MSG_NOSIGNAL*/ 0x4000ul);
  //  socket$netlink arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: netlink_proto = 0x0 (4 bytes)
  //  ]
  //  returns sock_netlink
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0);
  if (res != -1)
    r[2] = res;
  //  sendmmsg arguments: [
  //    fd: sock (resource)
  //    mmsg: ptr[in, array[send_mmsghdr]] {
  //      array[send_mmsghdr] {
  //      }
  //    }
  //    vlen: len = 0x40000000000009f (8 bytes)
  //    f: send_flags = 0x0 (8 bytes)
  //  ]
  syscall(__NR_sendmmsg, /*fd=*/r[2], /*mmsg=*/0x2000000002c0ul,
          /*vlen=*/0x40000000000009ful, /*f=*/0ul);
  //  socket$nl_generic arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: const = 0x10 (4 bytes)
  //  ]
  //  returns sock_nl_generic
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0x10);
  if (res != -1)
    r[3] = res;
  //  sendmsg$nl_generic arguments: [
  //    fd: sock_nl_generic (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_t[netlink_random_msg_type,
  //    genlmsghdr, nl_generic_attr]]] {
  //      msghdr_netlink[netlink_msg_t[netlink_random_msg_type, genlmsghdr,
  //      nl_generic_attr]] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_t[netlink_random_msg_type,
  //        genlmsghdr, nl_generic_attr]]] {
  //          iovec[in, netlink_msg_t[netlink_random_msg_type, genlmsghdr,
  //          nl_generic_attr]] {
  //            addr: ptr[in, netlink_msg_t[netlink_random_msg_type, genlmsghdr,
  //            nl_generic_attr]] {
  //              netlink_msg_t[netlink_random_msg_type, genlmsghdr,
  //              nl_generic_attr] {
  //                len: len = 0x14 (4 bytes)
  //                type: int16 = 0x26 (2 bytes)
  //                flags: netlink_msg_flags = 0x1 (2 bytes)
  //                seq: int32 = 0x7fffd (4 bytes)
  //                pid: int32 = 0x1000 (4 bytes)
  //                payload: genlmsghdr {
  //                  cmd: int8 = 0x6 (1 bytes)
  //                  version: const = 0x0 (1 bytes)
  //                  reserved: const = 0x0 (2 bytes)
  //                }
  //                attrs: array[nl_generic_attr] {
  //                }
  //              }
  //            }
  //            len: len = 0x14 (8 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x400c801 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x4008090 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000140 = 0;
  *(uint32_t*)0x200000000148 = 0;
  *(uint64_t*)0x200000000150 = 0x200000000000;
  *(uint64_t*)0x200000000000 = 0x200000000080;
  *(uint32_t*)0x200000000080 = 0x14;
  *(uint16_t*)0x200000000084 = 0x26;
  *(uint16_t*)0x200000000086 = 1;
  *(uint32_t*)0x200000000088 = 0x7fffd;
  *(uint32_t*)0x20000000008c = 0x1000;
  *(uint8_t*)0x200000000090 = 6;
  *(uint8_t*)0x200000000091 = 0;
  *(uint16_t*)0x200000000092 = 0;
  *(uint64_t*)0x200000000008 = 0x14;
  *(uint64_t*)0x200000000158 = 1;
  *(uint64_t*)0x200000000160 = 0;
  *(uint64_t*)0x200000000168 = 0;
  *(uint32_t*)0x200000000170 = 0x400c801;
  syscall(__NR_sendmsg, /*fd=*/r[3], /*msg=*/0x200000000140ul,
          /*f=MSG_ZEROCOPY|MSG_PROBE|MSG_MORE|MSG_EOR*/ 0x4008090ul);
}
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;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}