// https://syzkaller.appspot.com/bug?id=5e12ac175774b3ff672dbc5fb39b7bb9d94092b6
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <linux/loop.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <unistd.h>

extern unsigned long long procid;

struct fs_image_segment {
  void* data;
  uintptr_t size;
  uintptr_t offset;
};

#define IMAGE_MAX_SEGMENTS 4096
#define IMAGE_MAX_SIZE (32 << 20)

#define SYZ_memfd_create 319

static uintptr_t syz_mount_image(uintptr_t fs, uintptr_t dir, uintptr_t size,
                                 uintptr_t nsegs, uintptr_t segments,
                                 uintptr_t flags, uintptr_t opts)
{
  char loopname[64];
  int loopfd, err = 0, res = -1;
  uintptr_t i;
  struct fs_image_segment* segs = (struct fs_image_segment*)segments;

  if (nsegs > IMAGE_MAX_SEGMENTS)
    nsegs = IMAGE_MAX_SEGMENTS;
  for (i = 0; i < nsegs; i++) {
    if (segs[i].size > IMAGE_MAX_SIZE)
      segs[i].size = IMAGE_MAX_SIZE;
    segs[i].offset %= IMAGE_MAX_SIZE;
    if (segs[i].offset > IMAGE_MAX_SIZE - segs[i].size)
      segs[i].offset = IMAGE_MAX_SIZE - segs[i].size;
    if (size < segs[i].offset + segs[i].offset)
      size = segs[i].offset + segs[i].offset;
  }
  if (size > IMAGE_MAX_SIZE)
    size = IMAGE_MAX_SIZE;
  int memfd = syscall(SYZ_memfd_create, "syz_mount_image", 0);
  if (memfd == -1) {
    err = errno;
    goto error;
  }
  if (ftruncate(memfd, size)) {
    err = errno;
    goto error_close_memfd;
  }
  for (i = 0; i < nsegs; i++) {
    if (pwrite(memfd, segs[i].data, segs[i].size, segs[i].offset) < 0) {
    }
  }
  snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid);
  loopfd = open(loopname, O_RDWR);
  if (loopfd == -1) {
    err = errno;
    goto error_close_memfd;
  }
  if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
    if (errno != EBUSY) {
      err = errno;
      goto error_close_loop;
    }
    ioctl(loopfd, LOOP_CLR_FD, 0);
    usleep(1000);
    if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
      err = errno;
      goto error_close_loop;
    }
  }
  mkdir((char*)dir, 0777);
  if (strcmp((char*)fs, "iso9660") == 0)
    flags |= MS_RDONLY;
  if (mount(loopname, (char*)dir, (char*)fs, flags, (char*)opts)) {
    err = errno;
    goto error_clear_loop;
  }
  res = 0;
error_clear_loop:
  ioctl(loopfd, LOOP_CLR_FD, 0);
error_close_loop:
  close(loopfd);
error_close_memfd:
  close(memfd);
error:
  errno = err;
  return res;
}

unsigned long long procid;
void loop()
{
  memcpy((void*)0x20000000, "xfs", 4);
  memcpy((void*)0x20000100, "./file0", 8);
  *(uint64_t*)0x20000200 = 0x20010000;
  memcpy((void*)0x20010000,
         "\x58\x46\x53\x42\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00"
         "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x9f\x98"
         "\x99\xff\xcb\xa1\x4e\xe6\xad\x52\x08\x20\x67\x09\xed\x75\x00\x00\x00"
         "\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x35\xe0\x00\x00\x00\x00"
         "\x00\x00\x35\xe1\x00\x00\x00\x00\x00\x00\x35\xe2\x00\x00\x00\x01\x00"
         "\x00\x10\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x03\x55\xb4\xa4"
         "\x02\x00\x01\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
         "\x00\x0c\x09\x08\x04\x0c\x00\x00\x19\x00\x00\x00\x00\x00\x00\x00\x40"
         "\x00\x00\x00\x00\x00\x00\x00\x3d\x00\x00\x00\x00\x00\x00\x0c",
         151);
  *(uint64_t*)0x20000208 = 0x97;
  *(uint64_t*)0x20000210 = 0;
  *(uint64_t*)0x20000218 = 0x20010200;
  memcpy((void*)0x20010200, "\x58\x41\x47\x49\x00\x00\x00\x01\x00\x00\x00\x00"
                            "\x00\x00\x10\x00\x00\x00\x00\x40\x00\x00\x00\x03"
                            "\x00\x00\x00\x01\x00\x00\x00\x3d",
         32);
  *(uint64_t*)0x20000220 = 0x20;
  *(uint64_t*)0x20000228 = 0x400;
  *(uint64_t*)0x20000230 = 0x20010800;
  memcpy((void*)0x20010800,
         "\x49\x41\x42\xff\x00\x00\x35\xe0\x00\x00\x00\x3d\xff", 13);
  *(uint64_t*)0x20000238 = 0xd;
  *(uint64_t*)0x20000240 = 0x3000;
  *(uint64_t*)0x20000248 = 0x20010c00;
  *(uint64_t*)0x20000250 = 0;
  *(uint64_t*)0x20000258 = 0x35e000;
  *(uint64_t*)0x20000260 = 0x20010e00;
  *(uint64_t*)0x20000268 = 0;
  *(uint64_t*)0x20000270 = 0x35e200;
  *(uint64_t*)0x20000278 = 0x20011000;
  *(uint64_t*)0x20000280 = 0;
  *(uint64_t*)0x20000288 = 0x35e360;
  *(uint64_t*)0x20000290 = 0x20011200;
  *(uint64_t*)0x20000298 = 0;
  *(uint64_t*)0x200002a0 = 0x35e460;
  *(uint64_t*)0x200002a8 = 0x20011400;
  *(uint64_t*)0x200002b0 = 0;
  *(uint64_t*)0x200002b8 = 0x35e560;
  *(uint64_t*)0x200002c0 = 0x20011600;
  *(uint64_t*)0x200002c8 = 0;
  *(uint64_t*)0x200002d0 = 0x35e660;
  *(uint64_t*)0x200002d8 = 0x20011800;
  *(uint64_t*)0x200002e0 = 0;
  *(uint64_t*)0x200002e8 = 0x35e760;
  *(uint64_t*)0x200002f0 = 0x20011a00;
  *(uint64_t*)0x200002f8 = 0;
  *(uint64_t*)0x20000300 = 0x35e860;
  *(uint64_t*)0x20000308 = 0x20011c00;
  *(uint64_t*)0x20000310 = 0;
  *(uint64_t*)0x20000318 = 0x35e960;
  *(uint64_t*)0x20000320 = 0x20011e00;
  *(uint64_t*)0x20000328 = 0;
  *(uint64_t*)0x20000330 = 0x35ea60;
  *(uint64_t*)0x20000338 = 0x20012000;
  *(uint64_t*)0x20000340 = 0;
  *(uint64_t*)0x20000348 = 0x35eb60;
  *(uint64_t*)0x20000350 = 0x20012200;
  *(uint64_t*)0x20000358 = 0;
  *(uint64_t*)0x20000360 = 0x35ec60;
  *(uint64_t*)0x20000368 = 0x20012400;
  *(uint64_t*)0x20000370 = 0;
  *(uint64_t*)0x20000378 = 0x35ed60;
  *(uint64_t*)0x20000380 = 0x20012600;
  *(uint64_t*)0x20000388 = 0;
  *(uint64_t*)0x20000390 = 0x35ee60;
  *(uint64_t*)0x20000398 = 0x20012800;
  *(uint64_t*)0x200003a0 = 0;
  *(uint64_t*)0x200003a8 = 0x35ef60;
  *(uint64_t*)0x200003b0 = 0x20012a00;
  *(uint64_t*)0x200003b8 = 0;
  *(uint64_t*)0x200003c0 = 0x35f060;
  *(uint64_t*)0x200003c8 = 0x20012c00;
  *(uint64_t*)0x200003d0 = 0;
  *(uint64_t*)0x200003d8 = 0x35f160;
  *(uint64_t*)0x200003e0 = 0x20012e00;
  *(uint64_t*)0x200003e8 = 0;
  *(uint64_t*)0x200003f0 = 0x35f260;
  *(uint64_t*)0x200003f8 = 0x20013000;
  *(uint64_t*)0x20000400 = 0;
  *(uint64_t*)0x20000408 = 0x35f360;
  *(uint64_t*)0x20000410 = 0x20013200;
  *(uint64_t*)0x20000418 = 0;
  *(uint64_t*)0x20000420 = 0x35f460;
  *(uint64_t*)0x20000428 = 0x20013400;
  *(uint64_t*)0x20000430 = 0;
  *(uint64_t*)0x20000438 = 0x35f560;
  *(uint64_t*)0x20000440 = 0x20013600;
  *(uint64_t*)0x20000448 = 0;
  *(uint64_t*)0x20000450 = 0x35f660;
  *(uint64_t*)0x20000458 = 0x20013800;
  *(uint64_t*)0x20000460 = 0;
  *(uint64_t*)0x20000468 = 0x35f760;
  *(uint64_t*)0x20000470 = 0x20013a00;
  *(uint64_t*)0x20000478 = 0;
  *(uint64_t*)0x20000480 = 0x35f860;
  *(uint64_t*)0x20000488 = 0x20013c00;
  *(uint64_t*)0x20000490 = 0;
  *(uint64_t*)0x20000498 = 0x35f960;
  *(uint64_t*)0x200004a0 = 0x20013e00;
  *(uint64_t*)0x200004a8 = 0;
  *(uint64_t*)0x200004b0 = 0x35fa60;
  *(uint64_t*)0x200004b8 = 0x20014000;
  *(uint64_t*)0x200004c0 = 0;
  *(uint64_t*)0x200004c8 = 0x35fb60;
  *(uint64_t*)0x200004d0 = 0x20014200;
  *(uint64_t*)0x200004d8 = 0;
  *(uint64_t*)0x200004e0 = 0x35fc60;
  *(uint64_t*)0x200004e8 = 0x20014400;
  *(uint64_t*)0x200004f0 = 0;
  *(uint64_t*)0x200004f8 = 0x35fd60;
  *(uint64_t*)0x20000500 = 0x20014600;
  *(uint64_t*)0x20000508 = 0;
  *(uint64_t*)0x20000510 = 0x35fe60;
  *(uint64_t*)0x20000518 = 0x20014800;
  *(uint64_t*)0x20000520 = 0;
  *(uint64_t*)0x20000528 = 0x35ff60;
  *(uint64_t*)0x20000530 = 0x20014a00;
  *(uint64_t*)0x20000538 = 0;
  *(uint64_t*)0x20000540 = 0x360060;
  *(uint64_t*)0x20000548 = 0x20014c00;
  *(uint64_t*)0x20000550 = 0;
  *(uint64_t*)0x20000558 = 0x360160;
  *(uint64_t*)0x20000560 = 0x20014e00;
  *(uint64_t*)0x20000568 = 0;
  *(uint64_t*)0x20000570 = 0x360260;
  *(uint64_t*)0x20000578 = 0x20015000;
  *(uint64_t*)0x20000580 = 0;
  *(uint64_t*)0x20000588 = 0x360360;
  *(uint64_t*)0x20000590 = 0x20015200;
  *(uint64_t*)0x20000598 = 0;
  *(uint64_t*)0x200005a0 = 0x360460;
  *(uint64_t*)0x200005a8 = 0x20015400;
  *(uint64_t*)0x200005b0 = 0;
  *(uint64_t*)0x200005b8 = 0x360560;
  *(uint64_t*)0x200005c0 = 0x20015600;
  *(uint64_t*)0x200005c8 = 0;
  *(uint64_t*)0x200005d0 = 0x360660;
  *(uint64_t*)0x200005d8 = 0x20015800;
  *(uint64_t*)0x200005e0 = 0;
  *(uint64_t*)0x200005e8 = 0x360760;
  *(uint64_t*)0x200005f0 = 0x20015a00;
  *(uint64_t*)0x200005f8 = 0;
  *(uint64_t*)0x20000600 = 0x360860;
  *(uint64_t*)0x20000608 = 0x20015c00;
  *(uint64_t*)0x20000610 = 0;
  *(uint64_t*)0x20000618 = 0x360960;
  *(uint64_t*)0x20000620 = 0x20015e00;
  *(uint64_t*)0x20000628 = 0;
  *(uint64_t*)0x20000630 = 0x360a60;
  *(uint64_t*)0x20000638 = 0x20016000;
  *(uint64_t*)0x20000640 = 0;
  *(uint64_t*)0x20000648 = 0x360b60;
  *(uint64_t*)0x20000650 = 0x20016200;
  *(uint64_t*)0x20000658 = 0;
  *(uint64_t*)0x20000660 = 0x360c60;
  *(uint64_t*)0x20000668 = 0x20016400;
  *(uint64_t*)0x20000670 = 0;
  *(uint64_t*)0x20000678 = 0x360d60;
  *(uint64_t*)0x20000680 = 0x20016600;
  *(uint64_t*)0x20000688 = 0;
  *(uint64_t*)0x20000690 = 0x360e60;
  *(uint64_t*)0x20000698 = 0x20016800;
  *(uint64_t*)0x200006a0 = 0;
  *(uint64_t*)0x200006a8 = 0x360f60;
  *(uint64_t*)0x200006b0 = 0x20016a00;
  *(uint64_t*)0x200006b8 = 0;
  *(uint64_t*)0x200006c0 = 0x361060;
  *(uint64_t*)0x200006c8 = 0x20016c00;
  *(uint64_t*)0x200006d0 = 0;
  *(uint64_t*)0x200006d8 = 0x361160;
  *(uint64_t*)0x200006e0 = 0x20016e00;
  *(uint64_t*)0x200006e8 = 0;
  *(uint64_t*)0x200006f0 = 0x361260;
  *(uint64_t*)0x200006f8 = 0x20017000;
  *(uint64_t*)0x20000700 = 0;
  *(uint64_t*)0x20000708 = 0x361360;
  *(uint64_t*)0x20000710 = 0x20017200;
  *(uint64_t*)0x20000718 = 0;
  *(uint64_t*)0x20000720 = 0x361460;
  *(uint64_t*)0x20000728 = 0x20017400;
  *(uint64_t*)0x20000730 = 0;
  *(uint64_t*)0x20000738 = 0x361560;
  *(uint64_t*)0x20000740 = 0x20017600;
  *(uint64_t*)0x20000748 = 0;
  *(uint64_t*)0x20000750 = 0x361660;
  *(uint64_t*)0x20000758 = 0x20017800;
  *(uint64_t*)0x20000760 = 0;
  *(uint64_t*)0x20000768 = 0x361760;
  *(uint64_t*)0x20000770 = 0x20017a00;
  *(uint64_t*)0x20000778 = 0;
  *(uint64_t*)0x20000780 = 0x361860;
  *(uint64_t*)0x20000788 = 0x20017c00;
  *(uint64_t*)0x20000790 = 0;
  *(uint64_t*)0x20000798 = 0x361960;
  *(uint64_t*)0x200007a0 = 0x20017e00;
  *(uint64_t*)0x200007a8 = 0;
  *(uint64_t*)0x200007b0 = 0x361a60;
  *(uint64_t*)0x200007b8 = 0x20018000;
  *(uint64_t*)0x200007c0 = 0;
  *(uint64_t*)0x200007c8 = 0x361b60;
  *(uint64_t*)0x200007d0 = 0x20018200;
  *(uint64_t*)0x200007d8 = 0;
  *(uint64_t*)0x200007e0 = 0x361c60;
  *(uint64_t*)0x200007e8 = 0x20018400;
  *(uint64_t*)0x200007f0 = 0;
  *(uint64_t*)0x200007f8 = 0x361d60;
  *(uint64_t*)0x20000800 = 0x20018600;
  *(uint64_t*)0x20000808 = 0;
  *(uint64_t*)0x20000810 = 0x361e60;
  *(uint64_t*)0x20000818 = 0x20018800;
  *(uint64_t*)0x20000820 = 0;
  *(uint64_t*)0x20000828 = 0x361f60;
  memcpy((void*)0x20018900, "nouuid,", 7);
  *(uint8_t*)0x20018907 = 0;
  syz_mount_image(0x20000000, 0x20000100, 0x1000000, 0x42, 0x20000200, 0,
                  0x20018900);
}

int main()
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  loop();
  return 0;
}