// https://syzkaller.appspot.com/bug?id=2cdc6671f08128e87f194366495fc95a60c89de2
// 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;
}

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, /*domain=*/0x26ul, /*type=*/5ul, /*proto=*/0);
  if (res != -1)
    r[0] = res;
  *(uint16_t*)0x200000c0 = 0x26;
  memcpy((void*)0x200000c2, "hash\000\000\000\000\000\000\000\000\000\000", 14);
  *(uint32_t*)0x200000d0 = 0;
  *(uint32_t*)0x200000d4 = 0;
  memcpy((void*)0x200000d8,
         "poly1305\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000",
         64);
  syscall(__NR_bind, /*fd=*/r[0], /*addr=*/0x200000c0ul, /*addrlen=*/0x58ul);
  res = syscall(__NR_accept4, /*fd=*/r[0], /*peer=*/0ul, /*peerlen=*/0ul,
                /*flags=*/0ul);
  if (res != -1)
    r[1] = res;
  *(uint64_t*)0x20002c40 = 0;
  *(uint32_t*)0x20002c48 = 0;
  *(uint64_t*)0x20002c50 = 0x20002c00;
  *(uint64_t*)0x20002c00 = 0x20000000;
  *(uint32_t*)0x20000000 = 0x14;
  *(uint16_t*)0x20000004 = 0;
  *(uint16_t*)0x20000006 = 0;
  *(uint32_t*)0x20000008 = 0;
  *(uint32_t*)0x2000000c = 0;
  *(uint8_t*)0x20000010 = 0;
  *(uint8_t*)0x20000011 = 0;
  *(uint16_t*)0x20000012 = 0;
  *(uint64_t*)0x20002c08 = 0x14;
  *(uint64_t*)0x20002c58 = 1;
  *(uint64_t*)0x20002c60 = 0;
  *(uint64_t*)0x20002c68 = 0;
  *(uint32_t*)0x20002c70 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[1], /*msg=*/0x20002c40ul, /*f=*/0x48040ul);
  res = syscall(__NR_accept, /*fd=*/r[1], /*peer=*/0ul, /*peerlen=*/0ul);
  if (res != -1)
    r[2] = res;
  *(uint64_t*)0x2000a400 = 0;
  *(uint32_t*)0x2000a408 = 0;
  *(uint64_t*)0x2000a410 = 0;
  *(uint64_t*)0x2000a418 = 0;
  *(uint64_t*)0x2000a420 = 0;
  *(uint64_t*)0x2000a428 = 0;
  *(uint32_t*)0x2000a430 = 0;
  *(uint32_t*)0x2000a438 = 0;
  *(uint64_t*)0x2000a440 = 0;
  *(uint32_t*)0x2000a448 = 0;
  *(uint64_t*)0x2000a450 = 0;
  *(uint64_t*)0x2000a458 = 0;
  *(uint64_t*)0x2000a460 = 0;
  *(uint64_t*)0x2000a468 = 0;
  *(uint32_t*)0x2000a470 = 0;
  *(uint32_t*)0x2000a478 = 0;
  *(uint64_t*)0x2000a480 = 0;
  *(uint32_t*)0x2000a488 = 0;
  *(uint64_t*)0x2000a490 = 0;
  *(uint64_t*)0x2000a498 = 0;
  *(uint64_t*)0x2000a4a0 = 0;
  *(uint64_t*)0x2000a4a8 = 0;
  *(uint32_t*)0x2000a4b0 = 0;
  *(uint32_t*)0x2000a4b8 = 0;
  *(uint64_t*)0x2000a4c0 = 0;
  *(uint32_t*)0x2000a4c8 = 0;
  *(uint64_t*)0x2000a4d0 = 0;
  *(uint64_t*)0x2000a4d8 = 0;
  *(uint64_t*)0x2000a4e0 = 0;
  *(uint64_t*)0x2000a4e8 = 0;
  *(uint32_t*)0x2000a4f0 = 0;
  *(uint32_t*)0x2000a4f8 = 0;
  *(uint64_t*)0x2000a500 = 0;
  *(uint32_t*)0x2000a508 = 0;
  *(uint64_t*)0x2000a510 = 0;
  *(uint64_t*)0x2000a518 = 0;
  *(uint64_t*)0x2000a520 = 0;
  *(uint64_t*)0x2000a528 = 0;
  *(uint32_t*)0x2000a530 = 0;
  *(uint32_t*)0x2000a538 = 0;
  *(uint64_t*)0x2000a540 = 0;
  *(uint32_t*)0x2000a548 = 0;
  *(uint64_t*)0x2000a550 = 0;
  *(uint64_t*)0x2000a558 = 0;
  *(uint64_t*)0x2000a560 = 0;
  *(uint64_t*)0x2000a568 = 0;
  *(uint32_t*)0x2000a570 = 0;
  *(uint32_t*)0x2000a578 = 0;
  *(uint64_t*)0x2000a580 = 0;
  *(uint32_t*)0x2000a588 = 0;
  *(uint64_t*)0x2000a590 = 0;
  *(uint64_t*)0x2000a598 = 0;
  *(uint64_t*)0x2000a5a0 = 0;
  *(uint64_t*)0x2000a5a8 = 0;
  *(uint32_t*)0x2000a5b0 = 0;
  *(uint32_t*)0x2000a5b8 = 0;
  *(uint64_t*)0x2000a5c0 = 0;
  *(uint32_t*)0x2000a5c8 = 0;
  *(uint64_t*)0x2000a5d0 = 0;
  *(uint64_t*)0x2000a5d8 = 0;
  *(uint64_t*)0x2000a5e0 = 0;
  *(uint64_t*)0x2000a5e8 = 0;
  *(uint32_t*)0x2000a5f0 = 0;
  *(uint32_t*)0x2000a5f8 = 0;
  *(uint64_t*)0x2000a600 = 0;
  *(uint32_t*)0x2000a608 = 0;
  *(uint64_t*)0x2000a610 = 0;
  *(uint64_t*)0x2000a618 = 0;
  *(uint64_t*)0x2000a620 = 0;
  *(uint64_t*)0x2000a628 = 0;
  *(uint32_t*)0x2000a630 = 0;
  *(uint32_t*)0x2000a638 = 0;
  *(uint64_t*)0x2000a640 = 0;
  *(uint32_t*)0x2000a648 = 0;
  *(uint64_t*)0x2000a650 = 0;
  *(uint64_t*)0x2000a658 = 0;
  *(uint64_t*)0x2000a660 = 0;
  *(uint64_t*)0x2000a668 = 0;
  *(uint32_t*)0x2000a670 = 0;
  *(uint32_t*)0x2000a678 = 0;
  syscall(__NR_sendmmsg, /*fd=*/r[2], /*mmsg=*/0x2000a400ul, /*vlen=*/0xaul,
          /*f=*/1ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=*/7ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  loop();
  return 0;
}