// https://syzkaller.appspot.com/bug?id=3b7037e896a049efaeab1766ef4a69fd3a71125d
// 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 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);
  }
}

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 (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      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;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  openat$uinput arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 75 69 6e 70 75 74 00} (length 0xc)
  //    }
  //    flags: uinput_open_flags = 0x2 (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd_uinput
  memcpy((void*)0x200000000000, "/dev/uinput\000", 12);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                /*file=*/0x200000000000ul, /*flags=O_RDWR*/ 2, /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  ioctl$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);
  //  ioctl$UI_SET_FFBIT arguments: [
  //    fd: fd_uinput (resource)
  //    cmd: const = 0x4004556b (4 bytes)
  //    arg: intptr = 0x51 (8 bytes)
  //  ]
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x4004556b, /*arg=*/0x51ul);
  //  ioctl$UI_DEV_CREATE arguments: [
  //    fd: fd_uinput (resource)
  //    cmd: const = 0x5501 (4 bytes)
  //  ]
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x5501, 0);
  //  syz_open_dev$evdev arguments: [
  //    dev: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 69 6e 70 75 74 2f 65 76 65 6e 74 23 00}
  //      (length 0x12)
  //    }
  //    id: intptr = 0x72 (8 bytes)
  //    flags: open_flags = 0x0 (8 bytes)
  //  ]
  //  returns fd_evdev
  memcpy((void*)0x200000000080, "/dev/input/event#\000", 18);
  res = -1;
  res = syz_open_dev(/*dev=*/0x200000000080, /*id=*/0x72, /*flags=*/0);
  if (res != -1)
    r[1] = res;
  //  ioctl$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);
}
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;
}