// https://syzkaller.appspot.com/bug?id=c0d2a4940611ffcce896d6a29d80376fa0bca8af
// 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);
  int i;
  for (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) {
  }
}

#define SYZ_HAVE_SETUP_TEST 1
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;
  for (iter = 0;; 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 < 5 * 1000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  long res = 0;
  res = syscall(__NR_socket, 0x26, 5, 0);
  if (res != -1)
    r[0] = res;
  *(uint16_t*)0x20002640 = 0x26;
  memcpy((void*)0x20002642, "aead\000\000\000\000\000\000\000\000\000\000", 14);
  *(uint32_t*)0x20002650 = 0;
  *(uint32_t*)0x20002654 = 0;
  memcpy((void*)0x20002658, "generic-gcm-"
                            "aesni\000\000\000\000\000\000\000\000\000\000\000"
                            "\000\000\000\000\000\000\000\000\000\000\000\000"
                            "\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, r[0], 0x20002640, 0x58);
  memcpy((void*)0x20001400,
         "\xb7\xd9\x28\x8a\x91\x19\x93\xf0\x26\x5d\xf5\xcf\x1c\xdd\x8b\x55",
         16);
  syscall(__NR_setsockopt, r[0], 0x117, 1, 0x20001400, 0x10);
  res = syscall(__NR_accept, r[0], 0, 0);
  if (res != -1)
    r[1] = res;
  memcpy((void*)0x20000040,
         "\x26\xf8\xd5\x77\x39\x3c\x0e\x73\x41\x3f\xb9\xc3\x46\xa6\x57\x41",
         16);
  syscall(__NR_sendto, r[1], 0x20000040, 0x10, 0, 0, 0);
  *(uint64_t*)0x20008cc0 = 0;
  *(uint32_t*)0x20008cc8 = 0xfffffe06;
  *(uint64_t*)0x20008cd0 = 0x20003a40;
  *(uint64_t*)0x20003a40 = 0x200002c0;
  *(uint64_t*)0x20003a48 = 0x1000;
  *(uint64_t*)0x20008cd8 = 1;
  *(uint64_t*)0x20008ce0 = 0;
  *(uint64_t*)0x20008ce8 = 0x5c;
  *(uint32_t*)0x20008cf0 = 0;
  *(uint32_t*)0x20008cf8 = 0;
  syscall(__NR_recvmmsg, r[1], 0x20008cc0, 1, 0, 0);
}
int main(void)
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  loop();
  return 0;
}