// https://syzkaller.appspot.com/bug?id=ab136f1e51bcdf545b941b75c5d4215c6c2e3353
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <signal.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>

#include <linux/futex.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 void thread_start(void* (*fn)(void*), void* arg)
{
  pthread_t th;
  pthread_attr_t attr;
  pthread_attr_init(&attr);
  pthread_attr_setstacksize(&attr, 128 << 10);
  if (pthread_create(&th, &attr, fn, arg))
    exit(1);
  pthread_attr_destroy(&attr);
}

typedef struct {
  int state;
} event_t;

static void event_init(event_t* ev)
{
  ev->state = 0;
}

static void event_reset(event_t* ev)
{
  ev->state = 0;
}

static void event_set(event_t* ev)
{
  if (ev->state)
    exit(1);
  __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE);
  syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG);
}

static void event_wait(event_t* ev)
{
  while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0);
}

static int event_isset(event_t* ev)
{
  return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE);
}

static int event_timedwait(event_t* ev, uint64_t timeout)
{
  uint64_t start = current_time_ms();
  uint64_t now = start;
  for (;;) {
    uint64_t remain = timeout - (now - start);
    struct timespec ts;
    ts.tv_sec = remain / 1000;
    ts.tv_nsec = (remain % 1000) * 1000 * 1000;
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts);
    if (__atomic_load_n(&ev->state, __ATOMIC_RELAXED))
      return 1;
    now = current_time_ms();
    if (now - start > timeout)
      return 0;
  }
}

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();
}

#define SYZ_HAVE_RESET_TEST 1
static void reset_test()
{
  int fd;
  for (fd = 3; fd < 30; fd++)
    close(fd);
}

struct thread_t {
  int created, call;
  event_t ready, done;
};

static struct thread_t threads[16];
static void execute_call(int call);
static int running;

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    event_wait(&th->ready);
    event_reset(&th->ready);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    event_set(&th->done);
  }
  return 0;
}

static void execute_one(void)
{
  int i, call, thread;
  int collide = 0;
again:
  for (call = 0; call < 5; call++) {
    for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
         thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        event_init(&th->ready);
        event_init(&th->done);
        event_set(&th->done);
        thread_start(thr, th);
      }
      if (!event_isset(&th->done))
        continue;
      event_reset(&th->done);
      th->call = call;
      __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
      event_set(&th->ready);
      if (collide && (call % 2) == 0)
        break;
      event_timedwait(&th->done, 45);
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
  if (!collide) {
    collide = 1;
    goto again;
  }
}

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();
      reset_test();
      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;
    }
  }
}
#ifndef __NR_ioctl
#define __NR_ioctl 54
#endif
#ifndef __NR_mmap
#define __NR_mmap 192
#endif
#ifndef __NR_openat
#define __NR_openat 295
#endif
#ifndef __NR_write
#define __NR_write 4
#endif
#undef __NR_mmap
#define __NR_mmap __NR_mmap2

uint64_t r[1] = {0xffffffffffffffff};

void execute_call(int call)
{
  long res;
  switch (call) {
  case 0:
    memcpy((void*)0x20000000, "/dev/uinput", 12);
    res = syscall(__NR_openat, 0xffffff9c, 0x20000000, 2, 0);
    if (res != -1)
      r[0] = res;
    break;
  case 1:
    *(uint16_t*)0x20000040 = 0x2f;
    *(uint32_t*)0x20000044 = 0;
    *(uint32_t*)0x20000048 = 0;
    *(uint32_t*)0x2000004c = 0;
    *(uint32_t*)0x20000050 = 0;
    *(uint32_t*)0x20000054 = 0;
    *(uint32_t*)0x20000058 = 0;
    syscall(__NR_ioctl, (long)r[0], 0x401c5504, 0x20000040);
    break;
  case 2:
    syscall(__NR_ioctl, (long)r[0], 0x40045564, 3);
    break;
  case 3:
    memcpy((void*)0x20000080,
           "\x73\x79\x7a\x31\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
           80);
    *(uint16_t*)0x200000d0 = 0;
    *(uint16_t*)0x200000d2 = 0;
    *(uint16_t*)0x200000d4 = 0;
    *(uint16_t*)0x200000d6 = 0;
    *(uint32_t*)0x200000d8 = 0;
    *(uint32_t*)0x200000dc = 0;
    *(uint32_t*)0x200000e0 = 0;
    *(uint32_t*)0x200000e4 = 0;
    *(uint32_t*)0x200000e8 = 0;
    *(uint32_t*)0x200000ec = 0;
    *(uint32_t*)0x200000f0 = 0;
    *(uint32_t*)0x200000f4 = 0;
    *(uint32_t*)0x200000f8 = 0;
    *(uint32_t*)0x200000fc = 0;
    *(uint32_t*)0x20000100 = 0;
    *(uint32_t*)0x20000104 = 0;
    *(uint32_t*)0x20000108 = 0;
    *(uint32_t*)0x2000010c = 0;
    *(uint32_t*)0x20000110 = 0;
    *(uint32_t*)0x20000114 = 0;
    *(uint32_t*)0x20000118 = 0;
    *(uint32_t*)0x2000011c = 0;
    *(uint32_t*)0x20000120 = 0;
    *(uint32_t*)0x20000124 = 0;
    *(uint32_t*)0x20000128 = 0;
    *(uint32_t*)0x2000012c = 0;
    *(uint32_t*)0x20000130 = 0;
    *(uint32_t*)0x20000134 = 0;
    *(uint32_t*)0x20000138 = 0;
    *(uint32_t*)0x2000013c = 0;
    *(uint32_t*)0x20000140 = 0;
    *(uint32_t*)0x20000144 = 0;
    *(uint32_t*)0x20000148 = 0;
    *(uint32_t*)0x2000014c = 0;
    *(uint32_t*)0x20000150 = 0;
    *(uint32_t*)0x20000154 = 0;
    *(uint32_t*)0x20000158 = 0;
    *(uint32_t*)0x2000015c = 0;
    *(uint32_t*)0x20000160 = 0;
    *(uint32_t*)0x20000164 = 0;
    *(uint32_t*)0x20000168 = 0;
    *(uint32_t*)0x2000016c = 0;
    *(uint32_t*)0x20000170 = 0;
    *(uint32_t*)0x20000174 = 0;
    *(uint32_t*)0x20000178 = 0;
    *(uint32_t*)0x2000017c = 0;
    *(uint32_t*)0x20000180 = 0;
    *(uint32_t*)0x20000184 = 0;
    *(uint32_t*)0x20000188 = 0;
    *(uint32_t*)0x2000018c = 0;
    *(uint32_t*)0x20000190 = 0;
    *(uint32_t*)0x20000194 = 0;
    *(uint32_t*)0x20000198 = 0xfffffff8;
    *(uint32_t*)0x2000019c = 0;
    *(uint32_t*)0x200001a0 = 0;
    *(uint32_t*)0x200001a4 = 0;
    *(uint32_t*)0x200001a8 = 0;
    *(uint32_t*)0x200001ac = 0;
    *(uint32_t*)0x200001b0 = 0;
    *(uint32_t*)0x200001b4 = 0;
    *(uint32_t*)0x200001b8 = 0;
    *(uint32_t*)0x200001bc = 0;
    *(uint32_t*)0x200001c0 = 0;
    *(uint32_t*)0x200001c4 = 0;
    *(uint32_t*)0x200001c8 = 0;
    *(uint32_t*)0x200001cc = 0;
    *(uint32_t*)0x200001d0 = 0;
    *(uint32_t*)0x200001d4 = 0;
    *(uint32_t*)0x200001d8 = 0;
    *(uint32_t*)0x200001dc = 0;
    *(uint32_t*)0x200001e0 = 0;
    *(uint32_t*)0x200001e4 = 0;
    *(uint32_t*)0x200001e8 = 0;
    *(uint32_t*)0x200001ec = 0;
    *(uint32_t*)0x200001f0 = 0;
    *(uint32_t*)0x200001f4 = 0;
    *(uint32_t*)0x200001f8 = 0;
    *(uint32_t*)0x200001fc = 0;
    *(uint32_t*)0x20000200 = 0;
    *(uint32_t*)0x20000204 = 0;
    *(uint32_t*)0x20000208 = 0;
    *(uint32_t*)0x2000020c = 0;
    *(uint32_t*)0x20000210 = 0;
    *(uint32_t*)0x20000214 = 0;
    *(uint32_t*)0x20000218 = 0;
    *(uint32_t*)0x2000021c = 0;
    *(uint32_t*)0x20000220 = 0;
    *(uint32_t*)0x20000224 = 0;
    *(uint32_t*)0x20000228 = 0;
    *(uint32_t*)0x2000022c = 0;
    *(uint32_t*)0x20000230 = 0;
    *(uint32_t*)0x20000234 = 0;
    *(uint32_t*)0x20000238 = 0;
    *(uint32_t*)0x2000023c = 0;
    *(uint32_t*)0x20000240 = 0;
    *(uint32_t*)0x20000244 = 0;
    *(uint32_t*)0x20000248 = 0;
    *(uint32_t*)0x2000024c = 0;
    *(uint32_t*)0x20000250 = 0;
    *(uint32_t*)0x20000254 = 0;
    *(uint32_t*)0x20000258 = 0;
    *(uint32_t*)0x2000025c = 0;
    *(uint32_t*)0x20000260 = 0;
    *(uint32_t*)0x20000264 = 0;
    *(uint32_t*)0x20000268 = 0;
    *(uint32_t*)0x2000026c = 0;
    *(uint32_t*)0x20000270 = 0;
    *(uint32_t*)0x20000274 = 0;
    *(uint32_t*)0x20000278 = 0;
    *(uint32_t*)0x2000027c = 0;
    *(uint32_t*)0x20000280 = 0;
    *(uint32_t*)0x20000284 = 0;
    *(uint32_t*)0x20000288 = 0;
    *(uint32_t*)0x2000028c = 0;
    *(uint32_t*)0x20000290 = 0;
    *(uint32_t*)0x20000294 = 0;
    *(uint32_t*)0x20000298 = 0;
    *(uint32_t*)0x2000029c = 0;
    *(uint32_t*)0x200002a0 = 0;
    *(uint32_t*)0x200002a4 = 0;
    *(uint32_t*)0x200002a8 = 0;
    *(uint32_t*)0x200002ac = 0;
    *(uint32_t*)0x200002b0 = 0;
    *(uint32_t*)0x200002b4 = 0;
    *(uint32_t*)0x200002b8 = 0;
    *(uint32_t*)0x200002bc = 0;
    *(uint32_t*)0x200002c0 = 0;
    *(uint32_t*)0x200002c4 = 0;
    *(uint32_t*)0x200002c8 = 0;
    *(uint32_t*)0x200002cc = 0;
    *(uint32_t*)0x200002d0 = 0;
    *(uint32_t*)0x200002d4 = 0;
    *(uint32_t*)0x200002d8 = 0;
    *(uint32_t*)0x200002dc = 0;
    *(uint32_t*)0x200002e0 = 0;
    *(uint32_t*)0x200002e4 = 0;
    *(uint32_t*)0x200002e8 = 0;
    *(uint32_t*)0x200002ec = 0;
    *(uint32_t*)0x200002f0 = 0;
    *(uint32_t*)0x200002f4 = 0;
    *(uint32_t*)0x200002f8 = 0;
    *(uint32_t*)0x200002fc = 0;
    *(uint32_t*)0x20000300 = 0;
    *(uint32_t*)0x20000304 = 0;
    *(uint32_t*)0x20000308 = 0;
    *(uint32_t*)0x2000030c = 0;
    *(uint32_t*)0x20000310 = 0;
    *(uint32_t*)0x20000314 = 0;
    *(uint32_t*)0x20000318 = 0;
    *(uint32_t*)0x2000031c = 0;
    *(uint32_t*)0x20000320 = 0;
    *(uint32_t*)0x20000324 = 0;
    *(uint32_t*)0x20000328 = 0;
    *(uint32_t*)0x2000032c = 0;
    *(uint32_t*)0x20000330 = 0;
    *(uint32_t*)0x20000334 = 0;
    *(uint32_t*)0x20000338 = 0;
    *(uint32_t*)0x2000033c = 0;
    *(uint32_t*)0x20000340 = 0;
    *(uint32_t*)0x20000344 = 0;
    *(uint32_t*)0x20000348 = 0;
    *(uint32_t*)0x2000034c = 0;
    *(uint32_t*)0x20000350 = 0;
    *(uint32_t*)0x20000354 = 0;
    *(uint32_t*)0x20000358 = 0;
    *(uint32_t*)0x2000035c = 0;
    *(uint32_t*)0x20000360 = 0;
    *(uint32_t*)0x20000364 = 0;
    *(uint32_t*)0x20000368 = 0;
    *(uint32_t*)0x2000036c = 0;
    *(uint32_t*)0x20000370 = 0;
    *(uint32_t*)0x20000374 = 0;
    *(uint32_t*)0x20000378 = 0;
    *(uint32_t*)0x2000037c = 0;
    *(uint32_t*)0x20000380 = 0;
    *(uint32_t*)0x20000384 = 0;
    *(uint32_t*)0x20000388 = 0;
    *(uint32_t*)0x2000038c = 0;
    *(uint32_t*)0x20000390 = 0;
    *(uint32_t*)0x20000394 = 0;
    *(uint32_t*)0x20000398 = 0;
    *(uint32_t*)0x2000039c = 0;
    *(uint32_t*)0x200003a0 = 0;
    *(uint32_t*)0x200003a4 = 0;
    *(uint32_t*)0x200003a8 = 0;
    *(uint32_t*)0x200003ac = 0;
    *(uint32_t*)0x200003b0 = 0;
    *(uint32_t*)0x200003b4 = 0;
    *(uint32_t*)0x200003b8 = 0;
    *(uint32_t*)0x200003bc = 0;
    *(uint32_t*)0x200003c0 = 0;
    *(uint32_t*)0x200003c4 = 0;
    *(uint32_t*)0x200003c8 = 0;
    *(uint32_t*)0x200003cc = 0;
    *(uint32_t*)0x200003d0 = 0;
    *(uint32_t*)0x200003d4 = 0;
    *(uint32_t*)0x200003d8 = 0;
    *(uint32_t*)0x200003dc = 0;
    *(uint32_t*)0x200003e0 = 0;
    *(uint32_t*)0x200003e4 = 0;
    *(uint32_t*)0x200003e8 = 0;
    *(uint32_t*)0x200003ec = 0;
    *(uint32_t*)0x200003f0 = 0;
    *(uint32_t*)0x200003f4 = 0;
    *(uint32_t*)0x200003f8 = 0;
    *(uint32_t*)0x200003fc = 0;
    *(uint32_t*)0x20000400 = 0;
    *(uint32_t*)0x20000404 = 0;
    *(uint32_t*)0x20000408 = 0;
    *(uint32_t*)0x2000040c = 0;
    *(uint32_t*)0x20000410 = 0;
    *(uint32_t*)0x20000414 = 0;
    *(uint32_t*)0x20000418 = 0;
    *(uint32_t*)0x2000041c = 0;
    *(uint32_t*)0x20000420 = 0;
    *(uint32_t*)0x20000424 = 0;
    *(uint32_t*)0x20000428 = 0;
    *(uint32_t*)0x2000042c = 0;
    *(uint32_t*)0x20000430 = 0;
    *(uint32_t*)0x20000434 = 0;
    *(uint32_t*)0x20000438 = 0;
    *(uint32_t*)0x2000043c = 0;
    *(uint32_t*)0x20000440 = 0;
    *(uint32_t*)0x20000444 = 0;
    *(uint32_t*)0x20000448 = 0;
    *(uint32_t*)0x2000044c = 0;
    *(uint32_t*)0x20000450 = 0;
    *(uint32_t*)0x20000454 = 0;
    *(uint32_t*)0x20000458 = 0;
    *(uint32_t*)0x2000045c = 0;
    *(uint32_t*)0x20000460 = 0;
    *(uint32_t*)0x20000464 = 0;
    *(uint32_t*)0x20000468 = 0;
    *(uint32_t*)0x2000046c = 0;
    *(uint32_t*)0x20000470 = 0;
    *(uint32_t*)0x20000474 = 0;
    *(uint32_t*)0x20000478 = 0;
    *(uint32_t*)0x2000047c = 0;
    *(uint32_t*)0x20000480 = 0;
    *(uint32_t*)0x20000484 = 0;
    *(uint32_t*)0x20000488 = 0;
    *(uint32_t*)0x2000048c = 0;
    *(uint32_t*)0x20000490 = 0;
    *(uint32_t*)0x20000494 = 0;
    *(uint32_t*)0x20000498 = 0;
    *(uint32_t*)0x2000049c = 0;
    *(uint32_t*)0x200004a0 = 0;
    *(uint32_t*)0x200004a4 = 0;
    *(uint32_t*)0x200004a8 = 0;
    *(uint32_t*)0x200004ac = 0;
    *(uint32_t*)0x200004b0 = 0;
    *(uint32_t*)0x200004b4 = 0;
    *(uint32_t*)0x200004b8 = 0;
    *(uint32_t*)0x200004bc = 0;
    *(uint32_t*)0x200004c0 = 0;
    *(uint32_t*)0x200004c4 = 0;
    *(uint32_t*)0x200004c8 = 0;
    *(uint32_t*)0x200004cc = 0;
    *(uint32_t*)0x200004d0 = 0;
    *(uint32_t*)0x200004d4 = 0;
    *(uint32_t*)0x200004d8 = 0;
    syscall(__NR_write, (long)r[0], 0x20000080, 0x45c);
    break;
  case 4:
    syscall(__NR_ioctl, (long)r[0], 0x5501);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  loop();
  return 0;
}