// https://syzkaller.appspot.com/bug?id=d3b6ec9da700431917007ddb42539e3fd5a838b5
// 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/ioctl.h>
#include <sys/mount.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>

#ifndef __NR_ioctl
#define __NR_ioctl 29
#endif
#ifndef __NR_mmap
#define __NR_mmap 222
#endif

static unsigned long long procid;

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 use_temporary_dir(void)
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    exit(1);
  if (chmod(tmpdir, 0777))
    exit(1);
  if (chdir(tmpdir))
    exit(1);
}

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);
  }
}

#define FS_IOC_SETFLAGS _IOW('f', 2, long)
static void remove_dir(const char* dir)
{
  int iter = 0;
  DIR* dp = 0;
  const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW;

retry:
  while (umount2(dir, umount_flags) == 0) {
  }
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exit(1);
    }
    exit(1);
  }
  struct dirent* ep = 0;
  while ((ep = readdir(dp))) {
    if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
      continue;
    char filename[FILENAME_MAX];
    snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
    while (umount2(filename, umount_flags) == 0) {
    }
    struct stat st;
    if (lstat(filename, &st))
      exit(1);
    if (S_ISDIR(st.st_mode)) {
      remove_dir(filename);
      continue;
    }
    int i;
    for (i = 0;; i++) {
      if (unlink(filename) == 0)
        break;
      if (errno == EPERM) {
        int fd = open(filename, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno != EBUSY || i > 100)
        exit(1);
      if (umount2(filename, umount_flags))
        exit(1);
    }
  }
  closedir(dp);
  for (int i = 0;; i++) {
    if (rmdir(dir) == 0)
      break;
    if (i < 100) {
      if (errno == EPERM) {
        int fd = open(dir, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno == EBUSY) {
        if (umount2(dir, umount_flags))
          exit(1);
        continue;
      }
      if (errno == ENOTEMPTY) {
        if (iter < 100) {
          iter++;
          goto retry;
        }
      }
    }
    exit(1);
  }
}

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");
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    char cwdbuf[32];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      exit(1);
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      if (chdir(cwdbuf))
        exit(1);
      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 < 15000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

uint64_t r[6] = {0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0, 0x0, 0x0};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  syz_open_dev$dri arguments: [
  //    dev: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 64 72 69 2f 63 61 72 64 23 00} (length 0xf)
  //    }
  //    id: intptr = 0x1 (8 bytes)
  //    flags: open_flags = 0x0 (8 bytes)
  //  ]
  //  returns fd_dri
  memcpy((void*)0x20000240, "/dev/dri/card#\000", 15);
  res = -1;
  res = syz_open_dev(/*dev=*/0x20000240, /*id=*/1, /*flags=*/0);
  if (res != -1)
    r[0] = res;
  //  ioctl$DRM_IOCTL_MODE_GETRESOURCES arguments: [
  //    fd: fd_dri (resource)
  //    cmd: const = 0xc04064a0 (4 bytes)
  //    arg: ptr[inout, drm_mode_card_res] {
  //      drm_mode_card_res {
  //        fbid: nil
  //        crtcid: ptr[out, array[drm_crtc_id]] {
  //          array[drm_crtc_id] {
  //            drm_crtc_id (resource)
  //          }
  //        }
  //        connid: nil
  //        encid: nil
  //        nfbid: len = 0x0 (4 bytes)
  //        ncrtcid: len = 0x40000000000002d6 (4 bytes)
  //        nconnid: len = 0x0 (4 bytes)
  //        nencid: len = 0x0 (4 bytes)
  //        maxw: const = 0x0 (4 bytes)
  //        maxh: const = 0x0 (4 bytes)
  //        minw: const = 0x0 (4 bytes)
  //        minh: const = 0x0 (4 bytes)
  //      }
  //    }
  //  ]
  *(uint64_t*)0x200001c0 = 0;
  *(uint64_t*)0x200001c8 = 0x20000100;
  *(uint64_t*)0x200001d0 = 0;
  *(uint64_t*)0x200001d8 = 0;
  *(uint32_t*)0x200001e0 = 0;
  *(uint32_t*)0x200001e4 = 0x2d6;
  *(uint32_t*)0x200001e8 = 0;
  *(uint32_t*)0x200001ec = 0;
  *(uint32_t*)0x200001f0 = 0;
  *(uint32_t*)0x200001f4 = 0;
  *(uint32_t*)0x200001f8 = 0;
  *(uint32_t*)0x200001fc = 0;
  res = syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xc04064a0,
                /*arg=*/0x200001c0ul);
  if (res != -1)
    r[1] = *(uint32_t*)0x20000100;
  //  syz_open_dev$dri arguments: [
  //    dev: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 64 72 69 2f 63 61 72 64 23 00} (length 0xf)
  //    }
  //    id: intptr = 0x1 (8 bytes)
  //    flags: open_flags = 0x0 (8 bytes)
  //  ]
  //  returns fd_dri
  memcpy((void*)0x20000240, "/dev/dri/card#\000", 15);
  res = -1;
  res = syz_open_dev(/*dev=*/0x20000240, /*id=*/1, /*flags=*/0);
  if (res != -1)
    r[2] = res;
  //  ioctl$DRM_IOCTL_MODE_GETRESOURCES arguments: [
  //    fd: fd_dri (resource)
  //    cmd: const = 0xc04064a0 (4 bytes)
  //    arg: ptr[inout, drm_mode_card_res] {
  //      drm_mode_card_res {
  //        fbid: nil
  //        crtcid: ptr[out, array[drm_crtc_id]] {
  //          array[drm_crtc_id] {
  //            drm_crtc_id (resource)
  //          }
  //        }
  //        connid: nil
  //        encid: nil
  //        nfbid: len = 0x0 (4 bytes)
  //        ncrtcid: len = 0x1 (4 bytes)
  //        nconnid: len = 0x0 (4 bytes)
  //        nencid: len = 0x0 (4 bytes)
  //        maxw: const = 0x0 (4 bytes)
  //        maxh: const = 0x0 (4 bytes)
  //        minw: const = 0x0 (4 bytes)
  //        minh: const = 0x0 (4 bytes)
  //      }
  //    }
  //  ]
  *(uint64_t*)0x200001c0 = 0;
  *(uint64_t*)0x200001c8 = 0x20000100;
  *(uint64_t*)0x200001d0 = 0;
  *(uint64_t*)0x200001d8 = 0;
  *(uint32_t*)0x200001e0 = 0;
  *(uint32_t*)0x200001e4 = 1;
  *(uint32_t*)0x200001e8 = 0;
  *(uint32_t*)0x200001ec = 0;
  *(uint32_t*)0x200001f0 = 0;
  *(uint32_t*)0x200001f4 = 0;
  *(uint32_t*)0x200001f8 = 0;
  *(uint32_t*)0x200001fc = 0;
  res = syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0xc04064a0,
                /*arg=*/0x200001c0ul);
  if (res != -1)
    r[3] = *(uint32_t*)0x20000100;
  //  ioctl$DRM_IOCTL_MODE_GETCRTC arguments: [
  //    fd: fd_dri (resource)
  //    cmd: const = 0xc06864a1 (4 bytes)
  //    arg: ptr[inout, drm_mode_crtc$DRM_IOCTL_MODE_GETCRTC] {
  //      drm_mode_crtc$DRM_IOCTL_MODE_GETCRTC {
  //        set_connectors_ptr: nil
  //        count_connectors: len = 0x0 (4 bytes)
  //        crtc_id: drm_crtc_id (resource)
  //        fb_id: drm_fb_id (resource)
  //        x: int32 = 0x0 (4 bytes)
  //        y: int32 = 0x0 (4 bytes)
  //        gamma_size: int32 = 0x0 (4 bytes)
  //        mode_valid: int32 = 0x0 (4 bytes)
  //        mode: drm_mode_modeinfo {
  //          clock: int32 = 0x0 (4 bytes)
  //          hdisplay: int16 = 0x0 (2 bytes)
  //          hsync_start: int16 = 0x0 (2 bytes)
  //          hsync_end: int16 = 0x0 (2 bytes)
  //          htotal: int16 = 0x0 (2 bytes)
  //          hskew: int16 = 0x0 (2 bytes)
  //          vdisplay: int16 = 0x0 (2 bytes)
  //          vsync_start: int16 = 0x0 (2 bytes)
  //          vsync_end: int16 = 0x0 (2 bytes)
  //          vtotal: int16 = 0x0 (2 bytes)
  //          vscan: int16 = 0x0 (2 bytes)
  //          vrefresh: int32 = 0x0 (4 bytes)
  //          flags: int32 = 0x0 (4 bytes)
  //          type: int32 = 0x0 (4 bytes)
  //          name: buffer: (DirOut)
  //        }
  //      }
  //    }
  //  ]
  *(uint64_t*)0x20000080 = 0;
  *(uint32_t*)0x20000088 = 0;
  *(uint32_t*)0x2000008c = r[3];
  res = syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0xc06864a1,
                /*arg=*/0x20000080ul);
  if (res != -1)
    r[4] = *(uint32_t*)0x20000090;
  //  ioctl$DRM_IOCTL_MODE_GETRESOURCES arguments: [
  //    fd: fd_dri (resource)
  //    cmd: const = 0xc04064a0 (4 bytes)
  //    arg: ptr[inout, drm_mode_card_res] {
  //      drm_mode_card_res {
  //        fbid: nil
  //        crtcid: nil
  //        connid: ptr[out, array[drm_connector_id]] {
  //          array[drm_connector_id] {
  //            drm_connector_id (resource)
  //          }
  //        }
  //        encid: nil
  //        nfbid: len = 0x0 (4 bytes)
  //        ncrtcid: len = 0x0 (4 bytes)
  //        nconnid: len = 0x1 (4 bytes)
  //        nencid: len = 0x0 (4 bytes)
  //        maxw: const = 0x0 (4 bytes)
  //        maxh: const = 0x0 (4 bytes)
  //        minw: const = 0x0 (4 bytes)
  //        minh: const = 0x0 (4 bytes)
  //      }
  //    }
  //  ]
  *(uint64_t*)0x20000400 = 0;
  *(uint64_t*)0x20000408 = 0;
  *(uint64_t*)0x20000410 = 0x20000380;
  *(uint64_t*)0x20000418 = 0;
  *(uint32_t*)0x20000420 = 0;
  *(uint32_t*)0x20000424 = 0;
  *(uint32_t*)0x20000428 = 1;
  *(uint32_t*)0x2000042c = 0;
  *(uint32_t*)0x20000430 = 0;
  *(uint32_t*)0x20000434 = 0;
  *(uint32_t*)0x20000438 = 0;
  *(uint32_t*)0x2000043c = 0;
  res = syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xc04064a0,
                /*arg=*/0x20000400ul);
  if (res != -1)
    r[5] = *(uint32_t*)0x20000380;
  //  ioctl$DRM_IOCTL_MODE_SETCRTC arguments: [
  //    fd: fd_dri (resource)
  //    cmd: const = 0xc06864a2 (4 bytes)
  //    arg: ptr[in, drm_mode_crtc$DRM_IOCTL_MODE_SETCRTC] {
  //      drm_mode_crtc$DRM_IOCTL_MODE_SETCRTC {
  //        set_connectors_ptr: ptr[in, array[drm_connector_id]] {
  //          array[drm_connector_id] {
  //            drm_connector_id (resource)
  //          }
  //        }
  //        count_connectors: len = 0x1 (4 bytes)
  //        crtc_id: drm_crtc_id (resource)
  //        fb_id: drm_fb_id (resource)
  //        x: int32 = 0x0 (4 bytes)
  //        y: int32 = 0x0 (4 bytes)
  //        gamma_size: int32 = 0x0 (4 bytes)
  //        mode_valid: int32 = 0x401 (4 bytes)
  //        mode: drm_mode_modeinfo {
  //          clock: int32 = 0x1000 (4 bytes)
  //          hdisplay: int16 = 0x3 (2 bytes)
  //          hsync_start: int16 = 0x3 (2 bytes)
  //          hsync_end: int16 = 0x5 (2 bytes)
  //          htotal: int16 = 0x7f (2 bytes)
  //          hskew: int16 = 0x0 (2 bytes)
  //          vdisplay: int16 = 0xa1 (2 bytes)
  //          vsync_start: int16 = 0x801e (2 bytes)
  //          vsync_end: int16 = 0x9774 (2 bytes)
  //          vtotal: int16 = 0xfff8 (2 bytes)
  //          vscan: int16 = 0x4000 (2 bytes)
  //          vrefresh: int32 = 0x0 (4 bytes)
  //          flags: int32 = 0x0 (4 bytes)
  //          type: int32 = 0x0 (4 bytes)
  //          name: buffer: {0b a4 f0 2e fe 29 68 ad ea c3 6b ac 93 f8 f8 64 ad
  //          bb c2 c3 77 21 73 57 d4 7c 27 6d 53 eb a6 34} (length 0x20)
  //        }
  //      }
  //    }
  //  ]
  *(uint64_t*)0x20000300 = 0x20000540;
  *(uint32_t*)0x20000540 = r[5];
  *(uint32_t*)0x20000308 = 1;
  *(uint32_t*)0x2000030c = r[1];
  *(uint32_t*)0x20000310 = r[4];
  *(uint32_t*)0x20000314 = 0;
  *(uint32_t*)0x20000318 = 0;
  *(uint32_t*)0x2000031c = 0;
  *(uint32_t*)0x20000320 = 0x401;
  *(uint32_t*)0x20000324 = 0x1000;
  *(uint16_t*)0x20000328 = 3;
  *(uint16_t*)0x2000032a = 3;
  *(uint16_t*)0x2000032c = 5;
  *(uint16_t*)0x2000032e = 0x7f;
  *(uint16_t*)0x20000330 = 0;
  *(uint16_t*)0x20000332 = 0xa1;
  *(uint16_t*)0x20000334 = 0x801e;
  *(uint16_t*)0x20000336 = 0x9774;
  *(uint16_t*)0x20000338 = 0xfff8;
  *(uint16_t*)0x2000033a = 0x4000;
  *(uint32_t*)0x2000033c = 0;
  *(uint32_t*)0x20000340 = 0;
  *(uint32_t*)0x20000344 = 0;
  memcpy((void*)0x20000348,
         "\x0b\xa4\xf0\x2e\xfe\x29\x68\xad\xea\xc3\x6b\xac\x93\xf8\xf8\x64\xad"
         "\xbb\xc2\xc3\x77\x21\x73\x57\xd4\x7c\x27\x6d\x53\xeb\xa6\x34",
         32);
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xc06864a2, /*arg=*/0x20000300ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*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=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  for (procid = 0; procid < 2; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      loop();
    }
  }
  sleep(1000000);
  return 0;
}