// https://syzkaller.appspot.com/bug?id=00fadf9a6326e13098672b601d57f644cae380e9
// 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/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 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;
  res = syscall(__NR_socket, 0xaul, 2ul, 0x88);
  if (res != -1)
    r[0] = res;
  memcpy((void*)0x20000b40,
         "filter\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000",
         32);
  *(uint32_t*)0x20000b60 = 0xe;
  *(uint32_t*)0x20000b64 = 4;
  *(uint32_t*)0x20000b68 = 0x4c0;
  *(uint32_t*)0x20000b6c = -1;
  *(uint32_t*)0x20000b70 = 0x210;
  *(uint32_t*)0x20000b74 = 0x210;
  *(uint32_t*)0x20000b78 = 0;
  *(uint32_t*)0x20000b7c = -1;
  *(uint32_t*)0x20000b80 = -1;
  *(uint32_t*)0x20000b84 = 0x3f0;
  *(uint32_t*)0x20000b88 = 0x3f0;
  *(uint32_t*)0x20000b8c = 0x3f0;
  *(uint32_t*)0x20000b90 = -1;
  *(uint32_t*)0x20000b94 = 4;
  *(uint64_t*)0x20000b98 = 0;
  memset((void*)0x20000ba0, 0, 136);
  *(uint32_t*)0x20000c28 = 0;
  *(uint16_t*)0x20000c2c = 0x1c8;
  *(uint16_t*)0x20000c2e = 0x210;
  *(uint32_t*)0x20000c30 = 0;
  *(uint64_t*)0x20000c38 = 0;
  *(uint64_t*)0x20000c40 = 0;
  *(uint16_t*)0x20000c48 = 0x28;
  memcpy((void*)0x20000c4a,
         "cgroup\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000",
         29);
  *(uint8_t*)0x20000c67 = 0;
  *(uint32_t*)0x20000c68 = 0;
  *(uint32_t*)0x20000c6c = 0;
  *(uint16_t*)0x20000c70 = 0xf8;
  memcpy((void*)0x20000c72,
         "recent\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000",
         29);
  *(uint8_t*)0x20000c8f = 0;
  *(uint32_t*)0x20000c90 = 0;
  *(uint32_t*)0x20000c94 = 0;
  *(uint8_t*)0x20000c98 = 2;
  *(uint8_t*)0x20000c99 = 0;
  memcpy(
      (void*)0x20000c9a,
      "syz0\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
      "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000",
      200);
  *(uint8_t*)0x20000d62 = 0;
  *(uint16_t*)0x20000d68 = 0x48;
  memcpy((void*)0x20000d6a,
         "TEE\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000",
         29);
  *(uint8_t*)0x20000d87 = 1;
  *(uint8_t*)0x20000d88 = -1;
  *(uint8_t*)0x20000d89 = 1;
  memset((void*)0x20000d8a, 0, 13);
  *(uint8_t*)0x20000d97 = 1;
  memcpy((void*)0x20000d98, "veth1_to_bond\000\000\000", 16);
  *(uint64_t*)0x20000da8 = 0;
  memset((void*)0x20000db0, 0, 136);
  *(uint32_t*)0x20000e38 = 0;
  *(uint16_t*)0x20000e3c = 0xd0;
  *(uint16_t*)0x20000e3e = 0x110;
  *(uint32_t*)0x20000e40 = 0;
  *(uint64_t*)0x20000e48 = 0;
  *(uint64_t*)0x20000e50 = 0;
  *(uint16_t*)0x20000e58 = 0x28;
  memcpy((void*)0x20000e5a,
         "addrtype\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000",
         29);
  *(uint8_t*)0x20000e77 = 1;
  *(uint16_t*)0x20000e78 = 0;
  *(uint16_t*)0x20000e7a = 0x10;
  *(uint32_t*)0x20000e7c = 0;
  *(uint16_t*)0x20000e80 = 0x40;
  memcpy((void*)0x20000e82,
         "RATEEST\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000",
         29);
  *(uint8_t*)0x20000e9f = 0;
  memcpy((void*)0x20000ea0,
         "syz0\000\000\000\000\000\000\000\000\000\000\000\000", 16);
  *(uint8_t*)0x20000eb0 = 0;
  *(uint8_t*)0x20000eb1 = 5;
  *(uint64_t*)0x20000eb8 = 0;
  memset((void*)0x20000ec0, 0, 16);
  *(uint8_t*)0x20000ed0 = -1;
  *(uint8_t*)0x20000ed1 = 1;
  memset((void*)0x20000ed2, 0, 13);
  *(uint8_t*)0x20000edf = 1;
  *(uint32_t*)0x20000ee0 = htobe32(0);
  *(uint32_t*)0x20000ee4 = htobe32(0);
  *(uint32_t*)0x20000ee8 = htobe32(0);
  *(uint32_t*)0x20000eec = htobe32(0);
  *(uint32_t*)0x20000ef0 = htobe32(0);
  *(uint32_t*)0x20000ef4 = htobe32(0);
  *(uint32_t*)0x20000ef8 = htobe32(0);
  *(uint32_t*)0x20000efc = htobe32(0);
  memset((void*)0x20000f00, 0, 16);
  memcpy((void*)0x20000f10, "vlan0\000\000\000\000\000\000\000\000\000\000\000",
         16);
  *(uint8_t*)0x20000f20 = 0;
  *(uint8_t*)0x20000f30 = 0;
  *(uint16_t*)0x20000f40 = 0;
  *(uint8_t*)0x20000f42 = 0;
  *(uint8_t*)0x20000f43 = 0;
  *(uint8_t*)0x20000f44 = 0;
  *(uint32_t*)0x20000f48 = 0;
  *(uint16_t*)0x20000f4c = 0xa8;
  *(uint16_t*)0x20000f4e = 0xd0;
  *(uint32_t*)0x20000f50 = 0;
  *(uint64_t*)0x20000f58 = 0;
  *(uint64_t*)0x20000f60 = 0;
  *(uint16_t*)0x20000f68 = 0x28;
  memcpy((void*)0x20000f6a,
         "NFQUEUE\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000",
         29);
  *(uint8_t*)0x20000f87 = 3;
  *(uint16_t*)0x20000f88 = 0;
  *(uint16_t*)0x20000f8a = 3;
  *(uint16_t*)0x20000f8c = 0;
  memset((void*)0x20000f90, 0, 136);
  *(uint32_t*)0x20001018 = 0;
  *(uint16_t*)0x2000101c = 0xa8;
  *(uint16_t*)0x2000101e = 0xd0;
  *(uint32_t*)0x20001020 = 0;
  *(uint64_t*)0x20001028 = 0;
  *(uint64_t*)0x20001030 = 0;
  *(uint16_t*)0x20001038 = 0x28;
  memset((void*)0x2000103a, 0, 29);
  *(uint8_t*)0x20001057 = 0;
  *(uint32_t*)0x20001058 = 0xfffffffe;
  syscall(__NR_setsockopt, r[0], 0x29, 0x40, 0x20000b40ul, 0x520ul);
  memcpy((void*)0x20000040, "/dev/ptmx\000", 10);
  res = syscall(__NR_openat, 0xffffffffffffff9cul, 0x20000040ul, 0ul, 0ul);
  if (res != -1)
    r[1] = res;
  *(uint32_t*)0x20000080 = 5;
  syscall(__NR_ioctl, r[1], 0x5423, 0x20000080ul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0xc);
  if (res != -1)
    r[2] = res;
  *(uint64_t*)0x20000100 = 0;
  *(uint32_t*)0x20000108 = 0;
  *(uint64_t*)0x20000110 = 0x200000c0;
  *(uint64_t*)0x200000c0 = 0x20000040;
  *(uint32_t*)0x20000040 = 0x38;
  *(uint8_t*)0x20000044 = 0;
  *(uint8_t*)0x20000045 = 0xb;
  *(uint16_t*)0x20000046 = 5;
  *(uint32_t*)0x20000048 = 0;
  *(uint32_t*)0x2000004c = 0;
  *(uint8_t*)0x20000050 = 0xa;
  *(uint8_t*)0x20000051 = 0;
  *(uint16_t*)0x20000052 = htobe16(0);
  *(uint16_t*)0x20000054 = 0x11;
  *(uint16_t*)0x20000056 = 1;
  memcpy((void*)0x20000058, "/dev/net/tun\000", 13);
  *(uint16_t*)0x20000068 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x2000006a, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000006b, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000006b, 0, 7, 1);
  *(uint32_t*)0x2000006c = htobe32(0);
  *(uint16_t*)0x20000070 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x20000072, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000073, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000073, 0, 7, 1);
  *(uint32_t*)0x20000074 = htobe32(0);
  *(uint64_t*)0x200000c8 = 0x38;
  *(uint64_t*)0x20000118 = 1;
  *(uint64_t*)0x20000120 = 0;
  *(uint64_t*)0x20000128 = 0;
  *(uint32_t*)0x20000130 = 0;
  syscall(__NR_sendmsg, r[2], 0x20000100ul, 0ul);
}
int main(void)
{
  syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  loop();
  return 0;
}