// https://syzkaller.appspot.com/bug?id=fef8083f7f455d28eb08084264c5662a305e550b
// 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 <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/mman.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>

#ifndef __NR_bpf
#define __NR_bpf 321
#endif
#ifndef __NR_io_uring_enter
#define __NR_io_uring_enter 426
#endif
#ifndef __NR_io_uring_setup
#define __NR_io_uring_setup 425
#endif

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;
}

#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;
}

const int kInitNetNsFd = 201;

#define SIZEOF_IO_URING_SQE 64
#define SIZEOF_IO_URING_CQE 16
#define SQ_HEAD_OFFSET 0
#define SQ_TAIL_OFFSET 64
#define SQ_RING_MASK_OFFSET 256
#define SQ_RING_ENTRIES_OFFSET 264
#define SQ_FLAGS_OFFSET 276
#define SQ_DROPPED_OFFSET 272
#define CQ_HEAD_OFFSET 128
#define CQ_TAIL_OFFSET 192
#define CQ_RING_MASK_OFFSET 260
#define CQ_RING_ENTRIES_OFFSET 268
#define CQ_RING_OVERFLOW_OFFSET 284
#define CQ_FLAGS_OFFSET 280
#define CQ_CQES_OFFSET 320

struct io_sqring_offsets {
  uint32_t head;
  uint32_t tail;
  uint32_t ring_mask;
  uint32_t ring_entries;
  uint32_t flags;
  uint32_t dropped;
  uint32_t array;
  uint32_t resv1;
  uint64_t resv2;
};

struct io_cqring_offsets {
  uint32_t head;
  uint32_t tail;
  uint32_t ring_mask;
  uint32_t ring_entries;
  uint32_t overflow;
  uint32_t cqes;
  uint64_t resv[2];
};

struct io_uring_params {
  uint32_t sq_entries;
  uint32_t cq_entries;
  uint32_t flags;
  uint32_t sq_thread_cpu;
  uint32_t sq_thread_idle;
  uint32_t features;
  uint32_t resv[4];
  struct io_sqring_offsets sq_off;
  struct io_cqring_offsets cq_off;
};

#define IORING_OFF_SQ_RING 0
#define IORING_OFF_SQES 0x10000000ULL
#define IORING_SETUP_SQE128 (1U << 10)
#define IORING_SETUP_CQE32 (1U << 11)

static long syz_io_uring_setup(volatile long a0, volatile long a1,
                               volatile long a2, volatile long a3)
{
  uint32_t entries = (uint32_t)a0;
  struct io_uring_params* setup_params = (struct io_uring_params*)a1;
  void** ring_ptr_out = (void**)a2;
  void** sqes_ptr_out = (void**)a3;
  setup_params->flags &= ~(IORING_SETUP_CQE32 | IORING_SETUP_SQE128);
  uint32_t fd_io_uring = syscall(__NR_io_uring_setup, entries, setup_params);
  uint32_t sq_ring_sz =
      setup_params->sq_off.array + setup_params->sq_entries * sizeof(uint32_t);
  uint32_t cq_ring_sz = setup_params->cq_off.cqes +
                        setup_params->cq_entries * SIZEOF_IO_URING_CQE;
  uint32_t ring_sz = sq_ring_sz > cq_ring_sz ? sq_ring_sz : cq_ring_sz;
  *ring_ptr_out =
      mmap(0, ring_sz, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE,
           fd_io_uring, IORING_OFF_SQ_RING);
  uint32_t sqes_sz = setup_params->sq_entries * SIZEOF_IO_URING_SQE;
  *sqes_ptr_out = mmap(0, sqes_sz, PROT_READ | PROT_WRITE,
                       MAP_SHARED | MAP_POPULATE, fd_io_uring, IORING_OFF_SQES);
  uint32_t* array =
      (uint32_t*)((uintptr_t)*ring_ptr_out + setup_params->sq_off.array);
  for (uint32_t index = 0; index < entries; index++)
    array[index] = index;
  return fd_io_uring;
}

static long syz_io_uring_submit(volatile long a0, volatile long a1,
                                volatile long a2)
{
  char* ring_ptr = (char*)a0;
  char* sqes_ptr = (char*)a1;
  char* sqe = (char*)a2;
  uint32_t sq_ring_mask = *(uint32_t*)(ring_ptr + SQ_RING_MASK_OFFSET);
  uint32_t* sq_tail_ptr = (uint32_t*)(ring_ptr + SQ_TAIL_OFFSET);
  uint32_t sq_tail = *sq_tail_ptr & sq_ring_mask;
  char* sqe_dest = sqes_ptr + sq_tail * SIZEOF_IO_URING_SQE;
  memcpy(sqe_dest, sqe, SIZEOF_IO_URING_SQE);
  uint32_t sq_tail_next = *sq_tail_ptr + 1;
  __atomic_store_n(sq_tail_ptr, sq_tail_next, __ATOMIC_RELEASE);
  return 0;
}

static long syz_memcpy_off(volatile long a0, volatile long a1, volatile long a2,
                           volatile long a3, volatile long a4)
{
  char* dest = (char*)a0;
  uint32_t dest_off = (uint32_t)a1;
  char* src = (char*)a2;
  uint32_t src_off = (uint32_t)a3;
  size_t n = (size_t)a4;
  return (long)memcpy(dest + dest_off, src + src_off, n);
}

static long syz_init_net_socket(volatile long domain, volatile long type,
                                volatile long proto)
{
  return syscall(__NR_socket, domain, type, proto);
}

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");
}

#define USLEEP_FORKED_CHILD (3 * 50 * 1000)

static long handle_clone_ret(long ret)
{
  if (ret != 0) {
    __atomic_store_n(&clone_ongoing, 0, __ATOMIC_RELAXED);
    return ret;
  }
  usleep(USLEEP_FORKED_CHILD);
  syscall(__NR_exit, 0);
  while (1) {
  }
}

static long syz_clone(volatile long flags, volatile long stack,
                      volatile long stack_len, volatile long ptid,
                      volatile long ctid, volatile long tls)
{
  long sp = (stack + stack_len) & ~15;
  __atomic_store_n(&clone_ongoing, 1, __ATOMIC_RELAXED);
  long ret = (long)syscall(__NR_clone, flags & ~CLONE_VM, sp, ptid, ctid, tls);
  return handle_clone_ret(ret);
}

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[7] = {0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x0,
                 0xffffffffffffffff, 0x0};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  socket$nl_route arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: const = 0x0 (4 bytes)
  //  ]
  //  returns sock_nl_route
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0);
  if (res != -1)
    r[0] = res;
  //  syz_clone arguments: [
  //    flags: clone_flags = 0x0 (8 bytes)
  //    stack: nil
  //    stack_len: bytesize = 0x0 (8 bytes)
  //    parentid: nil
  //    childtid: nil
  //    tls: nil
  //  ]
  //  returns pid
  res = -1;
  NONFAILING(res = syz_clone(/*flags=*/0, /*stack=*/0, /*stack_len=*/0,
                             /*parentid=*/0, /*childtid=*/0, /*tls=*/0));
  if (res != -1)
    r[1] = res;
  //  ptrace arguments: [
  //    req: ptrace_req = 0x10 (8 bytes)
  //    pid: pid (resource)
  //  ]
  syscall(__NR_ptrace, /*req=PTRACE_ATTACH*/ 0x10ul, /*pid=*/r[1], 0, 0);
  //  bpf$BPF_PROG_RAW_TRACEPOINT_LOAD arguments: [
  //    cmd: const = 0x5 (8 bytes)
  //    arg: ptr[in, bpf_prog_t[flags[bpf_raw_tracepoint_prog_types, int32],
  //    const[0, int32], const[0, int32], const[0, int32]]] {
  //      bpf_prog_t[flags[bpf_raw_tracepoint_prog_types, int32], const[0,
  //      int32], const[0, int32], const[0, int32]] {
  //        type: bpf_raw_tracepoint_prog_types = 0x1 (4 bytes)
  //        ninsn: bytesize8 = 0x4 (4 bytes)
  //        insns: nil
  //        license: nil
  //        loglev: int32 = 0x0 (4 bytes)
  //        logsize: len = 0x0 (4 bytes)
  //        log: nil
  //        kern_version: bpf_kern_version = 0x0 (4 bytes)
  //        flags: bpf_prog_load_flags = 0x8 (4 bytes)
  //        prog_name: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
  //        (length 0x10) prog_ifindex: ifindex (resource) expected_attach_type:
  //        const = 0x0 (4 bytes) btf_fd: fd_btf (resource) func_info_rec_size:
  //        const = 0x8 (4 bytes) func_info: nil func_info_cnt: len = 0x0 (4
  //        bytes) line_info_rec_size: const = 0x10 (4 bytes) line_info: nil
  //        line_info_cnt: len = 0x0 (4 bytes)
  //        attach_btf_id: const = 0x0 (4 bytes)
  //        attach_prog_fd: const = 0x0 (4 bytes)
  //        core_relo_cnt: len = 0x0 (4 bytes)
  //        fd_array: nil
  //        core_relos: nil
  //        core_relo_rec_size: const = 0x10 (4 bytes)
  //        log_true_size: int32 = 0x0 (4 bytes)
  //        prog_token_fd: union
  //        _bpf_prog_t[flags[bpf_raw_tracepoint_prog_types, int32], const[0,
  //        int32], const[0, int32], const[0, int32]]_prog_token_fd_wrapper {
  //          void: buffer: {} (length 0x0)
  //        }
  //        pad: union _bpf_prog_t[flags[bpf_raw_tracepoint_prog_types, int32],
  //        const[0, int32], const[0, int32], const[0, int32]]_pad_wrapper {
  //          value: const = 0x0 (4 bytes)
  //        }
  //      }
  //    }
  //    size: len = 0x94 (8 bytes)
  //  ]
  //  returns fd_bpf_prog_raw_tracepoint
  NONFAILING(*(uint32_t*)0x200000000200 = 1);
  NONFAILING(*(uint32_t*)0x200000000204 = 4);
  NONFAILING(*(uint64_t*)0x200000000208 = 0);
  NONFAILING(*(uint64_t*)0x200000000210 = 0);
  NONFAILING(*(uint32_t*)0x200000000218 = 0);
  NONFAILING(*(uint32_t*)0x20000000021c = 0);
  NONFAILING(*(uint64_t*)0x200000000220 = 0);
  NONFAILING(*(uint32_t*)0x200000000228 = 0);
  NONFAILING(*(uint32_t*)0x20000000022c = 8);
  NONFAILING(memset((void*)0x200000000230, 0, 16));
  NONFAILING(*(uint32_t*)0x200000000240 = 0);
  NONFAILING(*(uint32_t*)0x200000000244 = 0);
  NONFAILING(*(uint32_t*)0x200000000248 = -1);
  NONFAILING(*(uint32_t*)0x20000000024c = 8);
  NONFAILING(*(uint64_t*)0x200000000250 = 0);
  NONFAILING(*(uint32_t*)0x200000000258 = 0);
  NONFAILING(*(uint32_t*)0x20000000025c = 0x10);
  NONFAILING(*(uint64_t*)0x200000000260 = 0);
  NONFAILING(*(uint32_t*)0x200000000268 = 0);
  NONFAILING(*(uint32_t*)0x20000000026c = 0);
  NONFAILING(*(uint32_t*)0x200000000270 = 0);
  NONFAILING(*(uint32_t*)0x200000000274 = 0);
  NONFAILING(*(uint64_t*)0x200000000278 = 0);
  NONFAILING(*(uint64_t*)0x200000000280 = 0);
  NONFAILING(*(uint32_t*)0x200000000288 = 0x10);
  NONFAILING(*(uint32_t*)0x20000000028c = 0);
  NONFAILING(*(uint32_t*)0x200000000290 = 0);
  syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000000200ul, /*size=*/0x94ul);
  //  syz_io_uring_setup arguments: [
  //    entries: int32 = 0x10d5 (4 bytes)
  //    params: ptr[inout, io_uring_params] {
  //      io_uring_params {
  //        sq_entries: int32 = 0x0 (4 bytes)
  //        cq_entries: int32 = 0x758e (4 bytes)
  //        flags: io_uring_setup_flags = 0x80 (4 bytes)
  //        sq_thread_cpu: int32 = 0x0 (4 bytes)
  //        sq_thread_idle: int32 = 0x34d (4 bytes)
  //        features: int32 = 0x0 (4 bytes)
  //        wq_fd: fd_io_uring (resource)
  //        resv: buffer: {00 00 00 00 00 00 00 00 00 00 00 00} (length 0xc)
  //        sq_off: array[int32] {
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //        }
  //        cq_off: array[int32] {
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //          int32 = 0x0 (4 bytes)
  //        }
  //      }
  //    }
  //    ring_ptr: ptr[out, ring_ptr] {
  //      ring_ptr (resource)
  //    }
  //    sqes_ptr: ptr[out, sqes_ptr] {
  //      sqes_ptr (resource)
  //    }
  //  ]
  //  returns fd_io_uring
  NONFAILING(*(uint32_t*)0x200000000484 = 0x758e);
  NONFAILING(*(uint32_t*)0x200000000488 = 0x80);
  NONFAILING(*(uint32_t*)0x20000000048c = 0);
  NONFAILING(*(uint32_t*)0x200000000490 = 0x34d);
  NONFAILING(*(uint32_t*)0x200000000498 = -1);
  NONFAILING(memset((void*)0x20000000049c, 0, 12));
  res = -1;
  NONFAILING(res = syz_io_uring_setup(
                 /*entries=*/0x10d5, /*params=*/0x200000000480,
                 /*ring_ptr=*/0x2000000000c0, /*sqes_ptr=*/0x200000000080));
  if (res != -1) {
    r[2] = res;
    NONFAILING(r[3] = *(uint64_t*)0x2000000000c0);
    NONFAILING(r[4] = *(uint64_t*)0x200000000080);
  }
  //  syz_memcpy_off$IO_URING_METADATA_GENERIC arguments: [
  //    ring_ptr: ring_ptr (resource)
  //    off: io_uring_offsets = 0x4 (8 bytes)
  //    src: ptr[in, int32] {
  //      int32 = 0xfffffffc (4 bytes)
  //    }
  //    src_off: const = 0x0 (8 bytes)
  //    nbytes: const = 0x4 (8 bytes)
  //  ]
  NONFAILING(*(uint32_t*)0x200000000180 = 0xfffffffc);
  NONFAILING(syz_memcpy_off(/*ring_ptr=*/r[3], /*off=*/4,
                            /*src=*/0x200000000180, /*src_off=*/0,
                            /*nbytes=*/4));
  //  setsockopt$SO_ATTACH_FILTER arguments: [
  //    fd: sock (resource)
  //    level: const = 0x1 (4 bytes)
  //    optname: const = 0x1a (4 bytes)
  //    optval: ptr[in, sock_fprog] {
  //      sock_fprog {
  //        len: len = 0x1 (2 bytes)
  //        pad = 0x0 (6 bytes)
  //        filter: ptr[in, array[sock_filter]] {
  //          array[sock_filter] {
  //            sock_filter {
  //              code: int16 = 0x32 (2 bytes)
  //              jt: int8 = 0x0 (1 bytes)
  //              jf: int8 = 0x0 (1 bytes)
  //              k: int32 = 0x4 (4 bytes)
  //            }
  //          }
  //        }
  //      }
  //    }
  //    optlen: len = 0x10 (8 bytes)
  //  ]
  NONFAILING(*(uint16_t*)0x2000000002c0 = 1);
  NONFAILING(*(uint64_t*)0x2000000002c8 = 0x200000000200);
  NONFAILING(*(uint16_t*)0x200000000200 = 0x32);
  NONFAILING(*(uint8_t*)0x200000000202 = 0);
  NONFAILING(*(uint8_t*)0x200000000203 = 0);
  NONFAILING(*(uint32_t*)0x200000000204 = 4);
  syscall(__NR_setsockopt, /*fd=*/(intptr_t)-1, /*level=*/1, /*optname=*/0x1a,
          /*optval=*/0x2000000002c0ul, /*optlen=*/0x10ul);
  //  mprotect arguments: [
  //    addr: VMA[0x800000]
  //    len: len = 0x800000 (8 bytes)
  //    prot: mmap_prot = 0x5 (8 bytes)
  //  ]
  syscall(__NR_mprotect, /*addr=*/0x200000000000ul, /*len=*/0x800000ul,
          /*prot=PROT_READ|PROT_EXEC*/ 5ul);
  //  syz_io_uring_submit arguments: [
  //    ring_ptr: ring_ptr (resource)
  //    sqes_ptr: sqes_ptr (resource)
  //    sqe: ptr[in, io_uring_sqe_u] {
  //      union io_uring_sqe_u {
  //        IORING_OP_LINK_TIMEOUT: io_uring_sqe[IORING_OP_LINK_TIMEOUT,
  //        const[0, int16], const[0, int32], const[0, int64], ptr[in,
  //        timespec], const[1, int32], flags[io_uring_timeout_flags, int32],
  //        sqe_user_data_not_openat, personality_only_misc] {
  //          opcode: const = 0xf (1 bytes)
  //          flags: iosqe_flags = 0x1 (1 bytes)
  //          ioprio: const = 0x0 (2 bytes)
  //          fd: const = 0x0 (4 bytes)
  //          off: const = 0x0 (8 bytes)
  //          addr: nil
  //          len: const = 0x1 (4 bytes)
  //          misc_flags: io_uring_timeout_flags = 0x8 (4 bytes)
  //          user_data: sqe_user_data_not_openat = 0x0 (8 bytes)
  //          misc: personality_only_misc {
  //            buf_index_unused: const = 0x0 (2 bytes)
  //            ioring_personality_id: ioring_personality_id (resource)
  //            pad_unused: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //            00 00 00 00 00 00} (length 0x14)
  //          }
  //        }
  //      }
  //    }
  //  ]
  NONFAILING(*(uint8_t*)0x200000000200 = 0xf);
  NONFAILING(*(uint8_t*)0x200000000201 = 1);
  NONFAILING(*(uint16_t*)0x200000000202 = 0);
  NONFAILING(*(uint32_t*)0x200000000204 = 0);
  NONFAILING(*(uint64_t*)0x200000000208 = 0);
  NONFAILING(*(uint64_t*)0x200000000210 = 0);
  NONFAILING(*(uint32_t*)0x200000000218 = 1);
  NONFAILING(*(uint32_t*)0x20000000021c = 8);
  NONFAILING(*(uint64_t*)0x200000000220 = 0);
  NONFAILING(*(uint16_t*)0x200000000228 = 0);
  NONFAILING(*(uint16_t*)0x20000000022a = 0);
  NONFAILING(memset((void*)0x20000000022c, 0, 20));
  NONFAILING(syz_io_uring_submit(/*ring_ptr=*/r[3], /*sqes_ptr=*/r[4],
                                 /*sqe=*/0x200000000200));
  //  io_uring_enter arguments: [
  //    fd: fd_io_uring (resource)
  //    to_submit: int32 = 0x47bc (4 bytes)
  //    min_complete: int32 = 0x0 (4 bytes)
  //    flags: io_uring_enter_flags = 0x0 (8 bytes)
  //    sigmask: nil
  //    size: len = 0x0 (8 bytes)
  //  ]
  syscall(__NR_io_uring_enter, /*fd=*/r[2], /*to_submit=*/0x47bc,
          /*min_complete=*/0, /*flags=*/0ul, /*sigmask=*/0ul, /*size=*/0ul);
  //  bind$ax25 arguments: [
  //    fd: sock_ax25 (resource)
  //    addr: ptr[in, full_sockaddr_ax25] {
  //      full_sockaddr_ax25 {
  //        fsa_ax25: sockaddr_ax25 {
  //          sax25_family: const = 0x3 (2 bytes)
  //          sax25_call: union ax25_address {
  //            rose: rose_address_dev {
  //              b0: const = 0xbb (1 bytes)
  //              b1: const = 0xbb (1 bytes)
  //              b2: const = 0xbb (1 bytes)
  //              b3: const = 0x1 (1 bytes)
  //              b4: proc = 0x0 (1 bytes)
  //            }
  //          }
  //          pad = 0x0 (3 bytes)
  //          sax25_ndigis: int32 = 0x1 (4 bytes)
  //        }
  //        fsa_digipeater: array[ax25_address] {
  //          union ax25_address {
  //            bcast: ax25_address_bcast {
  //              b0: const = 0xa2 (1 bytes)
  //              b1: const = 0xa6 (1 bytes)
  //              b2: const = 0xa8 (1 bytes)
  //              b3: const = 0x40 (1 bytes)
  //              b4: const = 0x40 (1 bytes)
  //              b5: const = 0x40 (1 bytes)
  //              b6: const = 0x0 (1 bytes)
  //            }
  //          }
  //          union ax25_address {
  //            rose: rose_address_dev {
  //              b0: const = 0xbb (1 bytes)
  //              b1: const = 0xbb (1 bytes)
  //              b2: const = 0xbb (1 bytes)
  //              b3: const = 0x1 (1 bytes)
  //              b4: proc = 0x0 (1 bytes)
  //            }
  //          }
  //          union ax25_address {
  //            default: ax25_address_default {
  //              b0: const = 0x98 (1 bytes)
  //              b1: const = 0x92 (1 bytes)
  //              b2: const = 0x9c (1 bytes)
  //              b3: const = 0xaa (1 bytes)
  //              b4: const = 0xb0 (1 bytes)
  //              b5: const = 0x40 (1 bytes)
  //              b6: const = 0x2 (1 bytes)
  //            }
  //          }
  //          union ax25_address {
  //            rose: rose_address_dev {
  //              b0: const = 0xbb (1 bytes)
  //              b1: const = 0xbb (1 bytes)
  //              b2: const = 0xbb (1 bytes)
  //              b3: const = 0x1 (1 bytes)
  //              b4: proc = 0x0 (1 bytes)
  //            }
  //          }
  //          union ax25_address {
  //            netrom: address_netrom_dev {
  //              b0: const = 0xbb (1 bytes)
  //              b1: const = 0xbb (1 bytes)
  //              b2: const = 0xbb (1 bytes)
  //              b3: const = 0xbb (1 bytes)
  //              b4: const = 0xbb (1 bytes)
  //              b5: const = 0x0 (1 bytes)
  //              b6: proc = 0x0 (1 bytes)
  //            }
  //          }
  //          union ax25_address {
  //            rose: rose_address_dev {
  //              b0: const = 0xbb (1 bytes)
  //              b1: const = 0xbb (1 bytes)
  //              b2: const = 0xbb (1 bytes)
  //              b3: const = 0x1 (1 bytes)
  //              b4: proc = 0x0 (1 bytes)
  //            }
  //          }
  //          union ax25_address {
  //            remote: ax25_address_remote {
  //              b0: const = 0xcc (1 bytes)
  //              b1: const = 0xcc (1 bytes)
  //              b2: const = 0xcc (1 bytes)
  //              b3: const = 0xcc (1 bytes)
  //              b4: const = 0xcc (1 bytes)
  //              b5: const = 0xcc (1 bytes)
  //              b6: proc = 0x2 (1 bytes)
  //            }
  //          }
  //          union ax25_address {
  //            default: ax25_address_default {
  //              b0: const = 0x98 (1 bytes)
  //              b1: const = 0x92 (1 bytes)
  //              b2: const = 0x9c (1 bytes)
  //              b3: const = 0xaa (1 bytes)
  //              b4: const = 0xb0 (1 bytes)
  //              b5: const = 0x40 (1 bytes)
  //              b6: const = 0x2 (1 bytes)
  //            }
  //          }
  //        }
  //      }
  //    }
  //    addrlen: len = 0x48 (8 bytes)
  //  ]
  NONFAILING(*(uint16_t*)0x200000000540 = 3);
  NONFAILING(*(uint8_t*)0x200000000542 = 0xbb);
  NONFAILING(*(uint8_t*)0x200000000543 = 0xbb);
  NONFAILING(*(uint8_t*)0x200000000544 = 0xbb);
  NONFAILING(*(uint8_t*)0x200000000545 = 1);
  NONFAILING(*(uint8_t*)0x200000000546 = 0);
  NONFAILING(*(uint32_t*)0x20000000054c = 1);
  NONFAILING(*(uint8_t*)0x200000000550 = 0xa2);
  NONFAILING(*(uint8_t*)0x200000000551 = 0xa6);
  NONFAILING(*(uint8_t*)0x200000000552 = 0xa8);
  NONFAILING(*(uint8_t*)0x200000000553 = 0x40);
  NONFAILING(*(uint8_t*)0x200000000554 = 0x40);
  NONFAILING(*(uint8_t*)0x200000000555 = 0x40);
  NONFAILING(*(uint8_t*)0x200000000556 = 0);
  NONFAILING(*(uint8_t*)0x200000000557 = 0xbb);
  NONFAILING(*(uint8_t*)0x200000000558 = 0xbb);
  NONFAILING(*(uint8_t*)0x200000000559 = 0xbb);
  NONFAILING(*(uint8_t*)0x20000000055a = 1);
  NONFAILING(*(uint8_t*)0x20000000055b = 0);
  NONFAILING(*(uint8_t*)0x20000000055e = 0x98);
  NONFAILING(*(uint8_t*)0x20000000055f = 0x92);
  NONFAILING(*(uint8_t*)0x200000000560 = 0x9c);
  NONFAILING(*(uint8_t*)0x200000000561 = 0xaa);
  NONFAILING(*(uint8_t*)0x200000000562 = 0xb0);
  NONFAILING(*(uint8_t*)0x200000000563 = 0x40);
  NONFAILING(*(uint8_t*)0x200000000564 = 2);
  NONFAILING(*(uint8_t*)0x200000000565 = 0xbb);
  NONFAILING(*(uint8_t*)0x200000000566 = 0xbb);
  NONFAILING(*(uint8_t*)0x200000000567 = 0xbb);
  NONFAILING(*(uint8_t*)0x200000000568 = 1);
  NONFAILING(*(uint8_t*)0x200000000569 = 0);
  NONFAILING(*(uint8_t*)0x20000000056c = 0xbb);
  NONFAILING(*(uint8_t*)0x20000000056d = 0xbb);
  NONFAILING(*(uint8_t*)0x20000000056e = 0xbb);
  NONFAILING(*(uint8_t*)0x20000000056f = 0xbb);
  NONFAILING(*(uint8_t*)0x200000000570 = 0xbb);
  NONFAILING(*(uint8_t*)0x200000000571 = 0);
  NONFAILING(*(uint8_t*)0x200000000572 = 0);
  NONFAILING(*(uint8_t*)0x200000000573 = 0xbb);
  NONFAILING(*(uint8_t*)0x200000000574 = 0xbb);
  NONFAILING(*(uint8_t*)0x200000000575 = 0xbb);
  NONFAILING(*(uint8_t*)0x200000000576 = 1);
  NONFAILING(*(uint8_t*)0x200000000577 = 0);
  NONFAILING(*(uint8_t*)0x20000000057a = 0xcc);
  NONFAILING(*(uint8_t*)0x20000000057b = 0xcc);
  NONFAILING(*(uint8_t*)0x20000000057c = 0xcc);
  NONFAILING(*(uint8_t*)0x20000000057d = 0xcc);
  NONFAILING(*(uint8_t*)0x20000000057e = 0xcc);
  NONFAILING(*(uint8_t*)0x20000000057f = 0xcc);
  NONFAILING(*(uint8_t*)0x200000000580 = 2);
  NONFAILING(*(uint8_t*)0x200000000581 = 0x98);
  NONFAILING(*(uint8_t*)0x200000000582 = 0x92);
  NONFAILING(*(uint8_t*)0x200000000583 = 0x9c);
  NONFAILING(*(uint8_t*)0x200000000584 = 0xaa);
  NONFAILING(*(uint8_t*)0x200000000585 = 0xb0);
  NONFAILING(*(uint8_t*)0x200000000586 = 0x40);
  NONFAILING(*(uint8_t*)0x200000000587 = 2);
  syscall(__NR_bind, /*fd=*/(intptr_t)-1, /*addr=*/0x200000000540ul,
          /*addrlen=*/0x48ul);
  //  close arguments: [
  //    fd: fd (resource)
  //  ]
  syscall(__NR_close, /*fd=*/(intptr_t)-1);
  //  ioctl$sock_SIOCGIFINDEX arguments: [
  //    fd: sock (resource)
  //    cmd: const = 0x8933 (4 bytes)
  //    arg: ptr[out, ifreq_dev_t[devnames, ifindex]] {
  //      ifreq_dev_t[devnames, ifindex] {
  //        ifr_ifrn: buffer: {62 72 69 64 67 65 30 00 00 00 00 00 00 00 00 00}
  //        (length 0x10) elem: ifindex (resource) pad = 0x0 (20 bytes)
  //      }
  //    }
  //  ]
  NONFAILING(memcpy((void*)0x2000000000c0,
                    "bridge0\000\000\000\000\000\000\000\000\000", 16));
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x8933, /*arg=*/0x2000000000c0ul);
  //  mprotect arguments: [
  //    addr: VMA[0x1000]
  //    len: len = 0x1000 (8 bytes)
  //    prot: mmap_prot = 0x0 (8 bytes)
  //  ]
  syscall(__NR_mprotect, /*addr=*/0x200000ffd000ul, /*len=*/0x1000ul,
          /*prot=*/0ul);
  //  mq_notify arguments: [
  //    mqd: fd_mq (resource)
  //    notif: ptr[in, sigevent] {
  //      sigevent {
  //        val: const = 0x110c230000 (8 bytes)
  //        signo: int32 = 0x803 (4 bytes)
  //        notify: sigev_notify = 0x2 (4 bytes)
  //        u: union sigevent_u {
  //          tid: pid (resource)
  //        }
  //        pad = 0x0 (32 bytes)
  //      }
  //    }
  //  ]
  NONFAILING(*(uint64_t*)0x200000000000 = 0x110c230000);
  NONFAILING(*(uint32_t*)0x200000000008 = 0x803);
  NONFAILING(*(uint32_t*)0x20000000000c = 2);
  NONFAILING(*(uint32_t*)0x200000000010 = 0);
  syscall(__NR_mq_notify, /*mqd=*/(intptr_t)-1, /*notif=*/0x200000000000ul);
  //  sendmsg$NFT_BATCH arguments: [
  //    fd: sock_nl_netfilter (resource)
  //    msg: ptr[in, msghdr_netlink[nft_batch_msg]] {
  //      msghdr_netlink[nft_batch_msg] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: nil
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x4008011 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x4000800 (8 bytes)
  //  ]
  NONFAILING(*(uint64_t*)0x200000000000 = 0);
  NONFAILING(*(uint32_t*)0x200000000008 = 0);
  NONFAILING(*(uint64_t*)0x200000000010 = 0);
  NONFAILING(*(uint64_t*)0x200000000018 = 1);
  NONFAILING(*(uint64_t*)0x200000000020 = 0);
  NONFAILING(*(uint64_t*)0x200000000028 = 0);
  NONFAILING(*(uint32_t*)0x200000000030 = 0x4008011);
  syscall(__NR_sendmsg, /*fd=*/(intptr_t)-1, /*msg=*/0x200000000000ul,
          /*f=MSG_ZEROCOPY|MSG_CONFIRM*/ 0x4000800ul);
  //  syz_init_net_socket$bt_hci arguments: [
  //    fam: const = 0x1f (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: const = 0x1 (8 bytes)
  //  ]
  //  returns sock_bt_hci
  NONFAILING(syz_init_net_socket(/*fam=*/0x1f, /*type=*/3, /*proto=*/1));
  //  syz_init_net_socket$bt_l2cap arguments: [
  //    fam: const = 0x1f (8 bytes)
  //    type: bt_l2cap_type = 0x5 (8 bytes)
  //    proto: const = 0x0 (8 bytes)
  //  ]
  //  returns sock_bt_l2cap
  res = -1;
  NONFAILING(res = syz_init_net_socket(/*fam=*/0x1f, /*type=SOCK_SEQPACKET*/ 5,
                                       /*proto=*/0));
  if (res != -1)
    r[5] = res;
  //  bpf$PROG_LOAD arguments: [
  //    cmd: const = 0x5 (8 bytes)
  //    arg: nil
  //    size: len = 0x0 (8 bytes)
  //  ]
  //  returns fd_bpf_prog
  syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0ul, /*size=*/0ul);
  //  modify_ldt$write arguments: [
  //    func: const = 0x1 (8 bytes)
  //    buf: ptr[in, user_desc] {
  //      user_desc {
  //        entry_number: int32 = 0x23 (4 bytes)
  //        base_addr: user_desc_bases = 0x1800 (4 bytes)
  //        limit: user_desc_limits = 0x400 (4 bytes)
  //        seg_32bit: int32 = 0x0 (0 bytes)
  //        contents: int32 = 0x0 (0 bytes)
  //        read_exec_only: int32 = 0x0 (0 bytes)
  //        limit_in_pages: int32 = 0x0 (0 bytes)
  //        seg_not_present: int32 = 0x0 (0 bytes)
  //        useable: int32 = 0x0 (0 bytes)
  //        lm: int32 = 0x0 (1 bytes)
  //        pad = 0x0 (3 bytes)
  //      }
  //    }
  //    len: len = 0x10 (8 bytes)
  //  ]
  NONFAILING(*(uint32_t*)0x2000000003c0 = 0x23);
  NONFAILING(*(uint32_t*)0x2000000003c4 = 0x1800);
  NONFAILING(*(uint32_t*)0x2000000003c8 = 0x400);
  NONFAILING(STORE_BY_BITMASK(uint32_t, , 0x2000000003cc, 0, 0, 1));
  NONFAILING(STORE_BY_BITMASK(uint32_t, , 0x2000000003cc, 0, 1, 2));
  NONFAILING(STORE_BY_BITMASK(uint32_t, , 0x2000000003cc, 0, 3, 1));
  NONFAILING(STORE_BY_BITMASK(uint32_t, , 0x2000000003cc, 0, 4, 1));
  NONFAILING(STORE_BY_BITMASK(uint32_t, , 0x2000000003cc, 0, 5, 1));
  NONFAILING(STORE_BY_BITMASK(uint32_t, , 0x2000000003cc, 0, 6, 1));
  NONFAILING(STORE_BY_BITMASK(uint32_t, , 0x2000000003cc, 0, 7, 1));
  syscall(__NR_modify_ldt, /*func=*/1ul, /*buf=*/0x2000000003c0ul,
          /*len=*/0x10ul);
  //  bpf$BPF_PROG_WITH_BTFID_LOAD arguments: [
  //    cmd: const = 0x5 (8 bytes)
  //    arg: ptr[in, bpf_prog_with_btfid] {
  //      union bpf_prog_with_btfid {
  //        bpf_ext: bpf_prog_t[const[BPF_PROG_TYPE_EXT, int32], const[0,
  //        int32], int32[0:BTF_ID_MAX], fd_bpf_prog[opt]] {
  //          type: const = 0x1c (4 bytes)
  //          ninsn: bytesize8 = 0x0 (4 bytes)
  //          insns: nil
  //          license: nil
  //          loglev: int32 = 0xc (4 bytes)
  //          logsize: len = 0x0 (4 bytes)
  //          log: nil
  //          kern_version: bpf_kern_version = 0x41000 (4 bytes)
  //          flags: bpf_prog_load_flags = 0x20 (4 bytes)
  //          prog_name: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00} (length 0x10) prog_ifindex: ifindex (resource)
  //          expected_attach_type: const = 0x0 (4 bytes)
  //          btf_fd: fd_btf (resource)
  //          func_info_rec_size: const = 0x8 (4 bytes)
  //          func_info: nil
  //          func_info_cnt: len = 0x0 (4 bytes)
  //          line_info_rec_size: const = 0x10 (4 bytes)
  //          line_info: nil
  //          line_info_cnt: len = 0x0 (4 bytes)
  //          attach_btf_id: int32 = 0x1f075 (4 bytes)
  //          attach_prog_fd: fd_bpf_prog (resource)
  //          core_relo_cnt: len = 0x0 (4 bytes)
  //          fd_array: nil
  //          core_relos: nil
  //          core_relo_rec_size: const = 0x10 (4 bytes)
  //          log_true_size: int32 = 0x10000 (4 bytes)
  //          prog_token_fd: union _bpf_prog_t[const[BPF_PROG_TYPE_EXT, int32],
  //          const[0, int32], int32[0:BTF_ID_MAX],
  //          fd_bpf_prog[opt]]_prog_token_fd_wrapper {
  //            void: buffer: {} (length 0x0)
  //          }
  //          pad: union _bpf_prog_t[const[BPF_PROG_TYPE_EXT, int32], const[0,
  //          int32], int32[0:BTF_ID_MAX], fd_bpf_prog[opt]]_pad_wrapper {
  //            value: const = 0x0 (4 bytes)
  //          }
  //        }
  //      }
  //    }
  //    size: len = 0x94 (8 bytes)
  //  ]
  //  returns fd_bpf_prog_with_btfid
  NONFAILING(*(uint32_t*)0x200000000400 = 0x1c);
  NONFAILING(*(uint32_t*)0x200000000404 = 0);
  NONFAILING(*(uint64_t*)0x200000000408 = 0);
  NONFAILING(*(uint64_t*)0x200000000410 = 0);
  NONFAILING(*(uint32_t*)0x200000000418 = 0xc);
  NONFAILING(*(uint32_t*)0x20000000041c = 0);
  NONFAILING(*(uint64_t*)0x200000000420 = 0);
  NONFAILING(*(uint32_t*)0x200000000428 = 0x41000);
  NONFAILING(*(uint32_t*)0x20000000042c = 0x20);
  NONFAILING(memset((void*)0x200000000430, 0, 16));
  NONFAILING(*(uint32_t*)0x200000000440 = 0);
  NONFAILING(*(uint32_t*)0x200000000444 = 0);
  NONFAILING(*(uint32_t*)0x200000000448 = -1);
  NONFAILING(*(uint32_t*)0x20000000044c = 8);
  NONFAILING(*(uint64_t*)0x200000000450 = 0);
  NONFAILING(*(uint32_t*)0x200000000458 = 0);
  NONFAILING(*(uint32_t*)0x20000000045c = 0x10);
  NONFAILING(*(uint64_t*)0x200000000460 = 0);
  NONFAILING(*(uint32_t*)0x200000000468 = 0);
  NONFAILING(*(uint32_t*)0x20000000046c = 0x1f075);
  NONFAILING(*(uint32_t*)0x200000000470 = -1);
  NONFAILING(*(uint32_t*)0x200000000474 = 0);
  NONFAILING(*(uint64_t*)0x200000000478 = 0);
  NONFAILING(*(uint64_t*)0x200000000480 = 0);
  NONFAILING(*(uint32_t*)0x200000000488 = 0x10);
  NONFAILING(*(uint32_t*)0x20000000048c = 0x10000);
  NONFAILING(*(uint32_t*)0x200000000490 = 0);
  syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000000400ul, /*size=*/0x94ul);
  //  syz_clone arguments: [
  //    flags: clone_flags = 0x0 (8 bytes)
  //    stack: nil
  //    stack_len: bytesize = 0x0 (8 bytes)
  //    parentid: nil
  //    childtid: nil
  //    tls: nil
  //  ]
  //  returns pid
  res = -1;
  NONFAILING(res = syz_clone(/*flags=*/0, /*stack=*/0, /*stack_len=*/0,
                             /*parentid=*/0, /*childtid=*/0, /*tls=*/0));
  if (res != -1)
    r[6] = res;
  //  ptrace arguments: [
  //    req: ptrace_req = 0x10 (8 bytes)
  //    pid: pid (resource)
  //  ]
  syscall(__NR_ptrace, /*req=PTRACE_ATTACH*/ 0x10ul, /*pid=*/r[6], 0, 0);
  //  ptrace$setregs arguments: [
  //    req: ptrace_req_setregs = 0xd (8 bytes)
  //    pid: pid (resource)
  //    ignored: intptr = 0x0 (8 bytes)
  //    data: nil
  //  ]
  syscall(__NR_ptrace, /*req=PTRACE_SETREGS*/ 0xdul, /*pid=*/r[6],
          /*ignored=*/0ul, /*data=*/0ul);
  //  bind$bt_l2cap arguments: [
  //    fd: sock_bt_l2cap (resource)
  //    addr: ptr[in, sockaddr_l2] {
  //      sockaddr_l2 {
  //        l2_family: const = 0x1f (2 bytes)
  //        l2_psm: int16 = 0x1 (2 bytes)
  //        l2_bdaddr: union bdaddr_t {
  //          none: buffer: {ff ff ff ff ff ff} (length 0x6)
  //        }
  //        l2_cid: int16 = 0x0 (2 bytes)
  //        l2_bdaddr_type: bdaddr_type = 0x1 (1 bytes)
  //        pad = 0x0 (1 bytes)
  //      }
  //    }
  //    addrlen: len = 0xe (8 bytes)
  //  ]
  NONFAILING(*(uint16_t*)0x200000000340 = 0x1f);
  NONFAILING(*(uint16_t*)0x200000000342 = 1);
  NONFAILING(memset((void*)0x200000000344, 255, 6));
  NONFAILING(*(uint16_t*)0x20000000034a = 0);
  NONFAILING(*(uint8_t*)0x20000000034c = 1);
  syscall(__NR_bind, /*fd=*/r[5], /*addr=*/0x200000000340ul, /*addrlen=*/0xeul);
}
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;
  install_segv_handler();
  loop();
  return 0;
}