// https://syzkaller.appspot.com/bug?id=7460667e2e38fd3c09ade09fea7c1dc0757b757d
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.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);
  int i = 0;
  for (; i < 100; i++) {
    if (pthread_create(&th, &attr, fn, arg) == 0) {
      pthread_attr_destroy(&attr);
      return;
    }
    if (errno == EAGAIN) {
      usleep(50);
      continue;
    }
    break;
  }
  exit(1);
}

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, 1000000);
}

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_ACQUIRE))
      return 1;
    now = current_time_ms();
    if (now - start > timeout)
      return 0;
  }
}

static long syz_open_dev(volatile long a0, volatile long a1, volatile long a2)
{
  if (a0 == 0xc || a0 == 0xb) {
    char buf[128];
    sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1,
            (uint8_t)a2);
    return open(buf, O_RDWR, 0);
  } else {
    unsigned long nb = a1;
    char buf[1024];
    char* hash;
    strncpy(buf, (char*)a0, sizeof(buf) - 1);
    buf[sizeof(buf) - 1] = 0;
    while ((hash = strchr(buf, '#'))) {
      *hash = '0' + (char)(nb % 10);
      nb /= 10;
    }
    return open(buf, a2, 0);
  }
}

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 loop(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  int i, call, thread;
  for (call = 0; call < 6; 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);
      event_timedwait(&th->done, 50);
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
}

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

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    //  openat$uinput arguments: [
    //    fd: const = 0xffffffffffffff9c (8 bytes)
    //    file: ptr[in, buffer] {
    //      buffer: {2f 64 65 76 2f 75 69 6e 70 75 74 00} (length 0xc)
    //    }
    //    flags: uinput_open_flags = 0x2 (4 bytes)
    //    mode: const = 0x0 (2 bytes)
    //  ]
    //  returns fd_uinput
    memcpy((void*)0x200000000000, "/dev/uinput\000", 12);
    res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                  /*file=*/0x200000000000ul, /*flags=O_RDWR*/ 2, /*mode=*/0);
    if (res != -1)
      r[0] = res;
    break;
  case 1:
    //  ioctl$UI_DEV_SETUP arguments: [
    //    fd: fd_uinput (resource)
    //    cmd: const = 0x405c5503 (4 bytes)
    //    arg: ptr[in, uinput_setup] {
    //      uinput_setup {
    //        id: input_id {
    //          bustype: int16 = 0x0 (2 bytes)
    //          vendor: int16 = 0x0 (2 bytes)
    //          product: int16 = 0x0 (2 bytes)
    //          version: int16 = 0x0 (2 bytes)
    //        }
    //        name: buffer: {73 79 7a 30 00 00 00 00 00 00 00 00 00 00 00 00 00
    //        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00} (length
    //        0x50) ff_effects_max: int32 = 0x52 (4 bytes)
    //      }
    //    }
    //  ]
    *(uint16_t*)0x200000000280 = 0;
    *(uint16_t*)0x200000000282 = 0;
    *(uint16_t*)0x200000000284 = 0;
    *(uint16_t*)0x200000000286 = 0;
    memcpy((void*)0x200000000288,
           "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",
           80);
    *(uint32_t*)0x2000000002d8 = 0x52;
    syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x405c5503,
            /*arg=*/0x200000000280ul);
    break;
  case 2:
    //  ioctl$UI_SET_FFBIT arguments: [
    //    fd: fd_uinput (resource)
    //    cmd: const = 0x4004556b (4 bytes)
    //    arg: intptr = 0x51 (8 bytes)
    //  ]
    syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4004556b, /*arg=*/0x51ul);
    break;
  case 3:
    //  ioctl$UI_DEV_CREATE arguments: [
    //    fd: fd_uinput (resource)
    //    cmd: const = 0x5501 (4 bytes)
    //  ]
    syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x5501, 0);
    break;
  case 4:
    //  syz_open_dev$evdev arguments: [
    //    dev: ptr[in, buffer] {
    //      buffer: {2f 64 65 76 2f 69 6e 70 75 74 2f 65 76 65 6e 74 23 00}
    //      (length 0x12)
    //    }
    //    id: intptr = 0x72 (8 bytes)
    //    flags: open_flags = 0x0 (8 bytes)
    //  ]
    //  returns fd_evdev
    memcpy((void*)0x200000000080, "/dev/input/event#\000", 18);
    res = -1;
    res = syz_open_dev(/*dev=*/0x200000000080, /*id=*/0x72, /*flags=*/0);
    if (res != -1)
      r[1] = res;
    break;
  case 5:
    //  ioctl$EVIOCSFF arguments: [
    //    fd: fd_evdev (resource)
    //    cmd: const = 0x40304580 (4 bytes)
    //    arg: ptr[in, ff_effect] {
    //      ff_effect {
    //        type: ff_effect_type = 0x50 (2 bytes)
    //        id: int16 = 0xffff (2 bytes)
    //        dir: int16 = 0x0 (2 bytes)
    //        trigger: ff_trigger {
    //          button: int16 = 0x2003 (2 bytes)
    //          interv: int16 = 0x80 (2 bytes)
    //        }
    //        replay: ff_replay {
    //          len: int16 = 0x114 (2 bytes)
    //          delay: int16 = 0x1 (2 bytes)
    //        }
    //        pad = 0x0 (2 bytes)
    //        u: union ff_effect_u {
    //          period: ff_periodic_effect {
    //            wave: ff_periodic_effect_wave = 0x58 (2 bytes)
    //            period: int16 = 0x51 (2 bytes)
    //            magnit: int16 = 0x8 (2 bytes)
    //            offset: int16 = 0x5bbe (2 bytes)
    //            phase: int16 = 0x6 (2 bytes)
    //            envelope: ff_envelope {
    //              len: int16 = 0x1 (2 bytes)
    //              level: int16 = 0x1003 (2 bytes)
    //              flen: int16 = 0x81a (2 bytes)
    //              flevel: int16 = 0x1 (2 bytes)
    //            }
    //            pad = 0x0 (2 bytes)
    //            custom_len: len = 0x0 (4 bytes)
    //            custom_data: nil
    //          }
    //        }
    //      }
    //    }
    //  ]
    *(uint16_t*)0x200000000040 = 0x50;
    *(uint16_t*)0x200000000042 = -1;
    *(uint16_t*)0x200000000044 = 0;
    *(uint16_t*)0x200000000046 = 0x2003;
    *(uint16_t*)0x200000000048 = 0x80;
    *(uint16_t*)0x20000000004a = 0x114;
    *(uint16_t*)0x20000000004c = 1;
    *(uint16_t*)0x200000000050 = 0x58;
    *(uint16_t*)0x200000000052 = 0x51;
    *(uint16_t*)0x200000000054 = 8;
    *(uint16_t*)0x200000000056 = 0x5bbe;
    *(uint16_t*)0x200000000058 = 6;
    *(uint16_t*)0x20000000005a = 1;
    *(uint16_t*)0x20000000005c = 0x1003;
    *(uint16_t*)0x20000000005e = 0x81a;
    *(uint16_t*)0x200000000060 = 1;
    *(uint32_t*)0x200000000064 = 0;
    *(uint64_t*)0x200000000068 = 0;
    syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x40304580,
            /*arg=*/0x200000000040ul);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  loop();
  return 0;
}