// https://syzkaller.appspot.com/bug?id=779a64ccaefd969d5d9bc72a7c4fe39598d53884
// 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[2] = {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*)0x20000600,
         "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*)0x20000620 = 0xe;
  *(uint32_t*)0x20000624 = 4;
  *(uint32_t*)0x20000628 = 0x4a8;
  *(uint32_t*)0x2000062c = -1;
  *(uint32_t*)0x20000630 = 0;
  *(uint32_t*)0x20000634 = 0x308;
  *(uint32_t*)0x20000638 = 0;
  *(uint32_t*)0x2000063c = -1;
  *(uint32_t*)0x20000640 = -1;
  *(uint32_t*)0x20000644 = 0x3d8;
  *(uint32_t*)0x20000648 = 0x3d8;
  *(uint32_t*)0x2000064c = 0x3d8;
  *(uint32_t*)0x20000650 = -1;
  *(uint32_t*)0x20000654 = 4;
  *(uint64_t*)0x20000658 = 0;
  memset((void*)0x20000660, 0, 136);
  *(uint32_t*)0x200006e8 = 0;
  *(uint16_t*)0x200006ec = 0x1c8;
  *(uint16_t*)0x200006ee = 0x210;
  *(uint32_t*)0x200006f0 = 0;
  *(uint64_t*)0x200006f8 = 0;
  *(uint64_t*)0x20000700 = 0;
  *(uint16_t*)0x20000708 = 0x28;
  memcpy((void*)0x2000070a,
         "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*)0x20000727 = 0;
  *(uint32_t*)0x20000728 = 0;
  *(uint32_t*)0x2000072c = 0;
  *(uint16_t*)0x20000730 = 0xf8;
  memcpy((void*)0x20000732,
         "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*)0x2000074f = 0;
  *(uint32_t*)0x20000750 = 0;
  *(uint32_t*)0x20000754 = 0;
  *(uint8_t*)0x20000758 = 2;
  *(uint8_t*)0x20000759 = 0;
  memcpy(
      (void*)0x2000075a,
      "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*)0x20000822 = 0;
  *(uint16_t*)0x20000828 = 0x48;
  memcpy((void*)0x2000082a,
         "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*)0x20000847 = 1;
  *(uint8_t*)0x20000848 = 0xac;
  *(uint8_t*)0x20000849 = 0x14;
  *(uint8_t*)0x2000084a = 0x14;
  *(uint8_t*)0x2000084b = 0;
  memcpy((void*)0x20000858, "wlan1\000\000\000\000\000\000\000\000\000\000\000",
         16);
  *(uint64_t*)0x20000868 = 0;
  memset((void*)0x20000870, 0, 136);
  *(uint32_t*)0x200008f8 = 0;
  *(uint16_t*)0x200008fc = 0xd0;
  *(uint16_t*)0x200008fe = 0xf8;
  *(uint32_t*)0x20000900 = 0;
  *(uint64_t*)0x20000908 = 0;
  *(uint64_t*)0x20000910 = 0;
  *(uint16_t*)0x20000918 = 0x28;
  memcpy((void*)0x2000091a,
         "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*)0x20000937 = 1;
  *(uint16_t*)0x20000938 = 0;
  *(uint16_t*)0x2000093a = 0x10;
  *(uint32_t*)0x2000093c = 0;
  *(uint16_t*)0x20000940 = 0x28;
  memcpy((void*)0x20000942,
         "REJECT\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*)0x2000095f = 0;
  *(uint32_t*)0x20000960 = 0;
  memset((void*)0x20000968, 0, 16);
  *(uint8_t*)0x20000978 = 0xfc;
  *(uint8_t*)0x20000979 = 0;
  memset((void*)0x2000097a, 0, 13);
  *(uint8_t*)0x20000987 = 0;
  *(uint32_t*)0x20000988 = htobe32(0);
  *(uint32_t*)0x2000098c = htobe32(0);
  *(uint32_t*)0x20000990 = htobe32(0);
  *(uint32_t*)0x20000994 = htobe32(0);
  *(uint32_t*)0x20000998 = htobe32(0);
  *(uint32_t*)0x2000099c = htobe32(0);
  *(uint32_t*)0x200009a0 = htobe32(0);
  *(uint32_t*)0x200009a4 = htobe32(0);
  memcpy((void*)0x200009a8, "geneve1\000\000\000\000\000\000\000\000\000", 16);
  memcpy((void*)0x200009b8, "vlan0\000\000\000\000\000\000\000\000\000\000\000",
         16);
  *(uint8_t*)0x200009c8 = 0;
  *(uint8_t*)0x200009d8 = 0;
  *(uint16_t*)0x200009e8 = 0;
  *(uint8_t*)0x200009ea = 0;
  *(uint8_t*)0x200009eb = 0;
  *(uint8_t*)0x200009ec = 0;
  *(uint32_t*)0x200009f0 = 0;
  *(uint16_t*)0x200009f4 = 0xa8;
  *(uint16_t*)0x200009f6 = 0xd0;
  *(uint32_t*)0x200009f8 = 0;
  *(uint64_t*)0x20000a00 = 0;
  *(uint64_t*)0x20000a08 = 0;
  *(uint16_t*)0x20000a10 = 0x28;
  memcpy((void*)0x20000a12,
         "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*)0x20000a2f = 3;
  *(uint16_t*)0x20000a30 = 0;
  *(uint16_t*)0x20000a32 = 3;
  *(uint16_t*)0x20000a34 = 0;
  memset((void*)0x20000a38, 0, 136);
  *(uint32_t*)0x20000ac0 = 0;
  *(uint16_t*)0x20000ac4 = 0xa8;
  *(uint16_t*)0x20000ac6 = 0xd0;
  *(uint32_t*)0x20000ac8 = 0;
  *(uint64_t*)0x20000ad0 = 0;
  *(uint64_t*)0x20000ad8 = 0;
  *(uint16_t*)0x20000ae0 = 0x28;
  memset((void*)0x20000ae2, 0, 29);
  *(uint8_t*)0x20000aff = 0;
  *(uint32_t*)0x20000b00 = 0xfffffffe;
  syscall(__NR_setsockopt, r[0], 0x29, 0x40, 0x20000600ul, 0x508ul);
  syscall(__NR_unshare, 0x64020000ul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0xc);
  if (res != -1)
    r[1] = res;
  *(uint64_t*)0x20002e80 = 0;
  *(uint32_t*)0x20002e88 = 0;
  *(uint64_t*)0x20002e90 = 0x20002e40;
  *(uint64_t*)0x20002e40 = 0x20002dc0;
  *(uint32_t*)0x20002dc0 = 0x2c;
  *(uint8_t*)0x20002dc4 = 0;
  *(uint8_t*)0x20002dc5 = 0xb;
  *(uint16_t*)0x20002dc6 = 0x201;
  *(uint32_t*)0x20002dc8 = 0;
  *(uint32_t*)0x20002dcc = 0;
  *(uint8_t*)0x20002dd0 = 2;
  *(uint8_t*)0x20002dd1 = 0;
  *(uint16_t*)0x20002dd2 = htobe16(0);
  *(uint16_t*)0x20002dd4 = 6;
  *(uint16_t*)0x20002dd6 = 1;
  memcpy((void*)0x20002dd8, "%\000", 2);
  *(uint16_t*)0x20002ddc = 8;
  STORE_BY_BITMASK(uint16_t, , 0x20002dde, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20002ddf, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20002ddf, 0, 7, 1);
  *(uint32_t*)0x20002de0 = htobe32(0);
  *(uint16_t*)0x20002de4 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x20002de6, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20002de7, 1, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20002de7, 0, 7, 1);
  *(uint32_t*)0x20002de8 = htobe32(0);
  *(uint64_t*)0x20002e48 = 0x2c;
  *(uint64_t*)0x20002e98 = 1;
  *(uint64_t*)0x20002ea0 = 0;
  *(uint64_t*)0x20002ea8 = 0;
  *(uint32_t*)0x20002eb0 = 0;
  syscall(__NR_sendmsg, r[1], 0x20002e80ul, 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;
}