// https://syzkaller.appspot.com/bug?id=408ae7c8a4162a0cc35da0b0a6d252851c487a7e
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.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/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

static unsigned long long procid;

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;
}

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 (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

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

void execute_one(void)
{
  intptr_t res = 0;
  NONFAILING(*(uint32_t*)0x200000c0 = 0x11);
  NONFAILING(*(uint32_t*)0x200000c4 = 0xb);
  NONFAILING(*(uint64_t*)0x200000c8 = 0x20000440);
  NONFAILING(*(uint8_t*)0x20000440 = 0x18);
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000441, 0, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000441, 0, 4, 4));
  NONFAILING(*(uint16_t*)0x20000442 = 0);
  NONFAILING(*(uint32_t*)0x20000444 = 0);
  NONFAILING(*(uint8_t*)0x20000448 = 0);
  NONFAILING(*(uint8_t*)0x20000449 = 0);
  NONFAILING(*(uint16_t*)0x2000044a = 0);
  NONFAILING(*(uint32_t*)0x2000044c = 0);
  NONFAILING(*(uint8_t*)0x20000450 = 0x18);
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000451, 1, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000451, 0, 4, 4));
  NONFAILING(*(uint16_t*)0x20000452 = 0);
  NONFAILING(*(uint32_t*)0x20000454 = 0x256c6c78);
  NONFAILING(*(uint8_t*)0x20000458 = 0);
  NONFAILING(*(uint8_t*)0x20000459 = 0);
  NONFAILING(*(uint16_t*)0x2000045a = 0);
  NONFAILING(*(uint32_t*)0x2000045c = 0x20202000);
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000460, 3, 0, 3));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000460, 3, 3, 2));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000460, 3, 5, 3));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000461, 0xa, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000461, 1, 4, 4));
  NONFAILING(*(uint16_t*)0x20000462 = 0xfff8);
  NONFAILING(*(uint32_t*)0x20000464 = 0);
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000468, 7, 0, 3));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000468, 1, 3, 1));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000468, 0xb, 4, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000469, 1, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000469, 0xa, 4, 4));
  NONFAILING(*(uint16_t*)0x2000046a = 0);
  NONFAILING(*(uint32_t*)0x2000046c = 0);
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000470, 7, 0, 3));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000470, 0, 3, 1));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000470, 0, 4, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000471, 1, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000471, 0, 4, 4));
  NONFAILING(*(uint16_t*)0x20000472 = 0);
  NONFAILING(*(uint32_t*)0x20000474 = 0xfffffff8);
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000478, 7, 0, 3));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000478, 0, 3, 1));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000478, 0xb, 4, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000479, 2, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000479, 0, 4, 4));
  NONFAILING(*(uint16_t*)0x2000047a = 0);
  NONFAILING(*(uint32_t*)0x2000047c = 8);
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000480, 7, 0, 3));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000480, 0, 3, 1));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000480, 0xb, 4, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000481, 3, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000481, 0, 4, 4));
  NONFAILING(*(uint16_t*)0x20000482 = 0);
  NONFAILING(*(uint32_t*)0x20000484 = 0);
  NONFAILING(*(uint8_t*)0x20000488 = 0x85);
  NONFAILING(*(uint8_t*)0x20000489 = 0);
  NONFAILING(*(uint16_t*)0x2000048a = 0);
  NONFAILING(*(uint32_t*)0x2000048c = 6);
  NONFAILING(*(uint8_t*)0x20000490 = 0x95);
  NONFAILING(*(uint8_t*)0x20000491 = 0);
  NONFAILING(*(uint16_t*)0x20000492 = 0);
  NONFAILING(*(uint32_t*)0x20000494 = 0);
  NONFAILING(*(uint64_t*)0x200000d0 = 0x20000240);
  NONFAILING(memcpy((void*)0x20000240, "GPL\000", 4));
  NONFAILING(*(uint32_t*)0x200000d8 = 0);
  NONFAILING(*(uint32_t*)0x200000dc = 0);
  NONFAILING(*(uint64_t*)0x200000e0 = 0);
  NONFAILING(*(uint32_t*)0x200000e8 = 0);
  NONFAILING(*(uint32_t*)0x200000ec = 0);
  NONFAILING(memset((void*)0x200000f0, 0, 16));
  NONFAILING(*(uint32_t*)0x20000100 = 0);
  NONFAILING(*(uint32_t*)0x20000104 = 0);
  NONFAILING(*(uint32_t*)0x20000108 = -1);
  NONFAILING(*(uint32_t*)0x2000010c = 0);
  NONFAILING(*(uint64_t*)0x20000110 = 0);
  NONFAILING(*(uint32_t*)0x20000118 = 0);
  NONFAILING(*(uint32_t*)0x2000011c = 0);
  NONFAILING(*(uint64_t*)0x20000120 = 0);
  NONFAILING(*(uint32_t*)0x20000128 = 0);
  NONFAILING(*(uint32_t*)0x2000012c = 0);
  NONFAILING(*(uint32_t*)0x20000130 = 0);
  NONFAILING(*(uint32_t*)0x20000134 = 0);
  NONFAILING(*(uint64_t*)0x20000138 = 0);
  NONFAILING(*(uint64_t*)0x20000140 = 0);
  NONFAILING(*(uint32_t*)0x20000148 = 0);
  NONFAILING(*(uint32_t*)0x2000014c = 0);
  res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000c0ul, /*size=*/0x90ul);
  if (res != -1)
    r[0] = res;
  NONFAILING(*(uint64_t*)0x20000000 = 0x20000040);
  NONFAILING(memcpy((void*)0x20000040, "kmem_cache_free\000", 16));
  NONFAILING(*(uint32_t*)0x20000008 = r[0]);
  syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x20000000ul, /*size=*/0x10ul);
  syscall(__NR_socketpair, /*domain=*/0x1eul, /*type=*/4ul, /*proto=*/0,
          /*fds=*/0ul);
  NONFAILING(*(uint64_t*)0x20000080 = 0);
  NONFAILING(*(uint32_t*)0x20000088 = 0);
  NONFAILING(*(uint64_t*)0x20000090 = 0x20000440);
  NONFAILING(*(uint64_t*)0x20000440 = 0);
  NONFAILING(*(uint64_t*)0x20000448 = 0);
  NONFAILING(*(uint64_t*)0x20000098 = 1);
  NONFAILING(*(uint64_t*)0x200000a0 = 0);
  NONFAILING(*(uint64_t*)0x200000a8 = 0);
  NONFAILING(*(uint32_t*)0x200000b0 = 0);
  syscall(__NR_sendmsg, /*fd=*/-1, /*msg=*/0x20000080ul, /*f=*/0ul);
  syscall(__NR_close, /*fd=*/-1);
  NONFAILING(*(uint32_t*)0x20000a40 = 0x14);
  NONFAILING(*(uint32_t*)0x20000a44 = 0xc);
  NONFAILING(*(uint64_t*)0x20000a48 = 0x20000040);
  NONFAILING(*(uint8_t*)0x20000040 = 0x18);
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000041, 0, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000041, 0, 4, 4));
  NONFAILING(*(uint16_t*)0x20000042 = 0);
  NONFAILING(*(uint32_t*)0x20000044 = 0);
  NONFAILING(*(uint8_t*)0x20000048 = 0);
  NONFAILING(*(uint8_t*)0x20000049 = 0);
  NONFAILING(*(uint16_t*)0x2000004a = 0);
  NONFAILING(*(uint32_t*)0x2000004c = 0);
  NONFAILING(*(uint8_t*)0x20000050 = 0x18);
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000051, 1, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000051, 1, 4, 4));
  NONFAILING(*(uint16_t*)0x20000052 = 0);
  NONFAILING(*(uint32_t*)0x20000054 = -1);
  NONFAILING(*(uint8_t*)0x20000058 = 0);
  NONFAILING(*(uint8_t*)0x20000059 = 0);
  NONFAILING(*(uint16_t*)0x2000005a = 0);
  NONFAILING(*(uint32_t*)0x2000005c = 0);
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000060, 7, 0, 3));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000060, 0, 3, 1));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000060, 0xb, 4, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000061, 8, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000061, 0, 4, 4));
  NONFAILING(*(uint16_t*)0x20000062 = 0);
  NONFAILING(*(uint32_t*)0x20000064 = 0);
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000068, 3, 0, 3));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000068, 3, 3, 2));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000068, 3, 5, 3));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000069, 0xa, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000069, 8, 4, 4));
  NONFAILING(*(uint16_t*)0x2000006a = 0xfff8);
  NONFAILING(*(uint32_t*)0x2000006c = 0);
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000070, 7, 0, 3));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000070, 1, 3, 1));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000070, 0xb, 4, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000071, 2, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000071, 0xa, 4, 4));
  NONFAILING(*(uint16_t*)0x20000072 = 0);
  NONFAILING(*(uint32_t*)0x20000074 = 0);
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000078, 7, 0, 3));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000078, 0, 3, 1));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000078, 0, 4, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000079, 2, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000079, 0, 4, 4));
  NONFAILING(*(uint16_t*)0x2000007a = 0);
  NONFAILING(*(uint32_t*)0x2000007c = 0xfffffff8);
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000080, 7, 0, 3));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000080, 0, 3, 1));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000080, 0xb, 4, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000081, 3, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000081, 0, 4, 4));
  NONFAILING(*(uint16_t*)0x20000082 = 0);
  NONFAILING(*(uint32_t*)0x20000084 = 8);
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000088, 7, 0, 3));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000088, 0, 3, 1));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000088, 0xb, 4, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000089, 4, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000089, 0, 4, 4));
  NONFAILING(*(uint16_t*)0x2000008a = 0);
  NONFAILING(*(uint32_t*)0x2000008c = 0);
  NONFAILING(*(uint8_t*)0x20000090 = 0x85);
  NONFAILING(*(uint8_t*)0x20000091 = 0);
  NONFAILING(*(uint16_t*)0x20000092 = 0);
  NONFAILING(*(uint32_t*)0x20000094 = 0x58);
  NONFAILING(*(uint8_t*)0x20000098 = 0x95);
  NONFAILING(*(uint8_t*)0x20000099 = 0);
  NONFAILING(*(uint16_t*)0x2000009a = 0);
  NONFAILING(*(uint32_t*)0x2000009c = 0);
  NONFAILING(*(uint64_t*)0x20000a50 = 0x20000280);
  NONFAILING(memcpy((void*)0x20000280, "syzkaller\000", 10));
  NONFAILING(*(uint32_t*)0x20000a58 = 0);
  NONFAILING(*(uint32_t*)0x20000a5c = 0);
  NONFAILING(*(uint64_t*)0x20000a60 = 0);
  NONFAILING(*(uint32_t*)0x20000a68 = 0);
  NONFAILING(*(uint32_t*)0x20000a6c = 0);
  NONFAILING(memset((void*)0x20000a70, 0, 16));
  NONFAILING(*(uint32_t*)0x20000a80 = 0);
  NONFAILING(*(uint32_t*)0x20000a84 = 0x25);
  NONFAILING(*(uint32_t*)0x20000a88 = -1);
  NONFAILING(*(uint32_t*)0x20000a8c = 8);
  NONFAILING(*(uint64_t*)0x20000a90 = 0);
  NONFAILING(*(uint32_t*)0x20000a98 = 0);
  NONFAILING(*(uint32_t*)0x20000a9c = 0x10);
  NONFAILING(*(uint64_t*)0x20000aa0 = 0);
  NONFAILING(*(uint32_t*)0x20000aa8 = 0);
  NONFAILING(*(uint32_t*)0x20000aac = 0);
  NONFAILING(*(uint32_t*)0x20000ab0 = 0);
  NONFAILING(*(uint32_t*)0x20000ab4 = 0);
  NONFAILING(*(uint64_t*)0x20000ab8 = 0);
  NONFAILING(*(uint64_t*)0x20000ac0 = 0);
  NONFAILING(*(uint32_t*)0x20000ac8 = 0x10);
  NONFAILING(*(uint32_t*)0x20000acc = 0);
  syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000a40ul, /*size=*/0x1cul);
  NONFAILING(sprintf((char*)0x20000180, "0x%016llx", (long long)3));
  syscall(__NR_write, /*fd=*/-1, /*buf=*/0x20000180ul, /*len=*/0x12ul);
  NONFAILING(*(uint32_t*)0x200000c0 = 0x1b);
  NONFAILING(*(uint32_t*)0x200000c4 = 0);
  NONFAILING(*(uint32_t*)0x200000c8 = 0);
  NONFAILING(*(uint32_t*)0x200000cc = 0x8000);
  NONFAILING(*(uint32_t*)0x200000d0 = 0);
  NONFAILING(*(uint32_t*)0x200000d4 = -1);
  NONFAILING(*(uint32_t*)0x200000d8 = 0);
  NONFAILING(memset((void*)0x200000dc, 0, 16));
  NONFAILING(*(uint32_t*)0x200000ec = 0);
  NONFAILING(*(uint32_t*)0x200000f0 = -1);
  NONFAILING(*(uint32_t*)0x200000f4 = 0);
  NONFAILING(*(uint32_t*)0x200000f8 = 0);
  NONFAILING(*(uint32_t*)0x200000fc = 0);
  NONFAILING(*(uint64_t*)0x20000100 = 0);
  syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x200000c0ul, /*size=*/0x48ul);
  NONFAILING(*(uint64_t*)0x20000000 = 0x20000200);
  NONFAILING(memcpy((void*)0x20000200, "ext4_sync_file_enter\000", 21));
  NONFAILING(*(uint32_t*)0x20000008 = -1);
  syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x20000000ul, /*size=*/0x10ul);
  NONFAILING(*(uint32_t*)0x20000340 = 2);
  NONFAILING(*(uint32_t*)0x20000344 = 4);
  NONFAILING(*(uint32_t*)0x20000348 = 8);
  NONFAILING(*(uint32_t*)0x2000034c = 1);
  NONFAILING(*(uint32_t*)0x20000350 = 0x80);
  NONFAILING(*(uint32_t*)0x20000354 = -1);
  NONFAILING(*(uint32_t*)0x20000358 = 0);
  NONFAILING(memset((void*)0x2000035c, 0, 16));
  NONFAILING(*(uint32_t*)0x2000036c = 0);
  NONFAILING(*(uint32_t*)0x20000370 = -1);
  NONFAILING(*(uint32_t*)0x20000374 = 0);
  NONFAILING(*(uint32_t*)0x20000378 = 0);
  NONFAILING(*(uint32_t*)0x2000037c = 0);
  NONFAILING(*(uint64_t*)0x20000380 = 0);
  res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x20000340ul, /*size=*/0x48ul);
  if (res != -1)
    r[1] = res;
  NONFAILING(*(uint32_t*)0x20000480 = r[1]);
  syscall(__NR_bpf, /*cmd=*/0x16ul, /*arg=*/0x20000480ul, /*size=*/4ul);
  NONFAILING(*(uint32_t*)0x200004c0 = 0x11);
  NONFAILING(*(uint32_t*)0x200004c4 = 0x18);
  NONFAILING(*(uint64_t*)0x200004c8 = 0x200001c0);
  NONFAILING(
      memcpy((void*)0x200001c0,
             "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
             "\xb7\x08\x00\x00\x00\x00\x00\x00\x7b\x8a\xf8\xff\x00\x00\x00\x00"
             "\xb7\x08\x00\x00\x00\x00\x00\x00\x7b\x8a\xf0\xff\x00\x00\x00\x00"
             "\xbf\xa1\x00\x00\x00\x00\x00\x00\x07\x01\x00\x00\xf8\xff\xff\xff"
             "\xbf\xa4\x00\x00\x00\x00\x00\x00\x07\x04\x00\x00\xf0\xff\xff\xff"
             "\xb7\x02\x00\x00\x00\x00\x00\x00\x18\x23\x00\x00",
             92));
  NONFAILING(*(uint32_t*)0x2000021c = r[1]);
  NONFAILING(memcpy(
      (void*)0x20000220,
      "\x00\x00\x00\x00\x00\x00\x00\x00\xb7\x05\x00\x00\x00\x00\x00\x00\x85\x00"
      "\x00\x00\xa5\x00\x00\x00\x18\x01\x00\x00\x20\x20\x64\x05\x00\x00\x00\x00"
      "\x00\x20\x20\x20\x7b\x1a\xf8\xff\x00\x00\x00\x00\xbf\xa1\x00\x00\x00\x00"
      "\x00\x00\x07\x01\x00\x00\xf8\xff\xff\xff\xb7\x02\x00\x00\x08\x00\x00\x00"
      "\xb7\x03\x00\x00\x00\x00\x00\x00\xa5\x00\x00\x00\x08\x00\x00\x00\x95",
      89));
  NONFAILING(*(uint64_t*)0x200004d0 = 0x20000600);
  NONFAILING(memcpy((void*)0x20000600, "GPL\000", 4));
  NONFAILING(*(uint32_t*)0x200004d8 = 0);
  NONFAILING(*(uint32_t*)0x200004dc = 0);
  NONFAILING(*(uint64_t*)0x200004e0 = 0);
  NONFAILING(*(uint32_t*)0x200004e8 = 0);
  NONFAILING(*(uint32_t*)0x200004ec = 0);
  NONFAILING(memset((void*)0x200004f0, 0, 16));
  NONFAILING(*(uint32_t*)0x20000500 = 0);
  NONFAILING(*(uint32_t*)0x20000504 = 0);
  NONFAILING(*(uint32_t*)0x20000508 = 0);
  NONFAILING(*(uint32_t*)0x2000050c = 0);
  NONFAILING(*(uint64_t*)0x20000510 = 0);
  NONFAILING(*(uint32_t*)0x20000518 = 0);
  NONFAILING(*(uint32_t*)0x2000051c = 0);
  NONFAILING(*(uint64_t*)0x20000520 = 0);
  NONFAILING(*(uint32_t*)0x20000528 = 0);
  NONFAILING(*(uint32_t*)0x2000052c = 0);
  NONFAILING(*(uint32_t*)0x20000530 = 0);
  NONFAILING(*(uint32_t*)0x20000534 = 0);
  NONFAILING(*(uint64_t*)0x20000538 = 0);
  NONFAILING(*(uint64_t*)0x20000540 = 0);
  NONFAILING(*(uint32_t*)0x20000548 = 0);
  NONFAILING(*(uint32_t*)0x2000054c = 0);
  res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200004c0ul, /*size=*/0x90ul);
  if (res != -1)
    r[2] = res;
  NONFAILING(*(uint64_t*)0x200002c0 = 0x20000000);
  NONFAILING(memcpy((void*)0x20000000, "kmem_cache_free\000", 16));
  NONFAILING(*(uint32_t*)0x200002c8 = r[2]);
  syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x200002c0ul, /*size=*/0x10ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  install_segv_handler();
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}