// https://syzkaller.appspot.com/bug?id=9a79b8811a34e4105fa7e275831547cd5de07b05
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <fcntl.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 <unistd.h>

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 & ~O_CREAT, 0);
  }
}

uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

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;
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  syz_open_dev$ndb arguments: [
  //    dev: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 6e 62 64 23 00} (length 0xa)
  //    }
  //    id: proc = 0x0 (8 bytes)
  //    flags: open_flags = 0x4080 (8 bytes)
  //  ]
  //  returns fd_nbd
  memcpy((void*)0x200000000380, "/dev/nbd#\000", 10);
  res = -1;
  res = syz_open_dev(/*dev=*/0x200000000380, /*id=*/0,
                     /*flags=O_EXCL|O_DIRECT*/ 0x4080);
  if (res != -1)
    r[0] = res;
  //  socketpair$nbd arguments: [
  //    domain: const = 0x1 (8 bytes)
  //    type: const = 0x1 (8 bytes)
  //    proto: const = 0x0 (4 bytes)
  //    fds: ptr[out, nbd_sock_pair] {
  //      nbd_sock_pair {
  //        client: sock_nbd_client (resource)
  //        server: sock_nbd_server (resource)
  //      }
  //    }
  //  ]
  res = syscall(__NR_socketpair, /*domain=*/1ul, /*type=*/1ul, /*proto=*/0,
                /*fds=*/0x200000000080ul);
  if (res != -1)
    r[1] = *(uint32_t*)0x200000000080;
  //  ioctl$NBD_SET_SOCK arguments: [
  //    fd: fd_nbd (resource)
  //    cmd: const = 0xab00 (4 bytes)
  //    arg: sock_nbd_client (resource)
  //  ]
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xab00, /*arg=*/r[1]);
  //  syz_open_dev$ndb arguments: [
  //    dev: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 6e 62 64 23 00} (length 0xa)
  //    }
  //    id: proc = 0x0 (8 bytes)
  //    flags: open_flags = 0x0 (8 bytes)
  //  ]
  //  returns fd_nbd
  memcpy((void*)0x200000000040, "/dev/nbd#\000", 10);
  res = -1;
  res = syz_open_dev(/*dev=*/0x200000000040, /*id=*/0, /*flags=*/0);
  if (res != -1)
    r[2] = res;
  //  ioctl$NBD_SET_SOCK arguments: [
  //    fd: fd_nbd (resource)
  //    cmd: const = 0xab00 (4 bytes)
  //    arg: sock_nbd_client (resource)
  //  ]
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xab00, /*arg=*/r[1]);
  //  ioctl$NBD_SET_FLAGS arguments: [
  //    fd: fd_nbd (resource)
  //    cmd: const = 0xab0a (4 bytes)
  //    arg: intptr = 0x1000001000104 (8 bytes)
  //  ]
  syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0xab0a, /*arg=*/0x1000001000104ul);
  //  ioctl$NBD_DO_IT arguments: [
  //    fd: fd_nbd (resource)
  //    cmd: const = 0xab03 (4 bytes)
  //  ]
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0xab03, 0);
  return 0;
}