[vhost:vhost 8/22] drivers/virtio/virtio_mem.c:1375:20: error: implicit declaration of function 'kzalloc'; did you mean 'vzalloc'?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git vhost
head:   da1742791d8c0c0a8e5471f181549c4726a5c5f9
commit: 7527631e900d464ed2d533f799cb0da2b29cc6f0 [8/22] virtio-mem: 
Paravirtualized memory hotplug
config: x86_64-randconfig-b002-20200505 (attached as .config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce:
        git checkout 7527631e900d464ed2d533f799cb0da2b29cc6f0
        # save the attached .config to linux build tree
        make ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <l...@intel.com>

All error/warnings (new ones prefixed by >>):

   drivers/virtio/virtio_mem.c: In function 'virtio_mem_probe':
>> drivers/virtio/virtio_mem.c:1375:20: error: implicit declaration of function 
>> 'kzalloc'; did you mean 'vzalloc'? [-Werror=implicit-function-declaration]
     vdev->priv = vm = kzalloc(sizeof(*vm), GFP_KERNEL);
                       ^~~~~~~
                       vzalloc
>> drivers/virtio/virtio_mem.c:1375:18: warning: assignment makes pointer from 
>> integer without a cast [-Wint-conversion]
     vdev->priv = vm = kzalloc(sizeof(*vm), GFP_KERNEL);
                     ^
>> drivers/virtio/virtio_mem.c:1419:2: error: implicit declaration of function 
>> 'kfree'; did you mean 'vfree'? [-Werror=implicit-function-declaration]
     kfree(vm);
     ^~~~~
     vfree
   cc1: some warnings being treated as errors

vim +1375 drivers/virtio/virtio_mem.c

  1369  
  1370  static int virtio_mem_probe(struct virtio_device *vdev)
  1371  {
  1372          struct virtio_mem *vm;
  1373          int rc = -EINVAL;
  1374  
> 1375          vdev->priv = vm = kzalloc(sizeof(*vm), GFP_KERNEL);
  1376          if (!vm)
  1377                  return -ENOMEM;
  1378  
  1379          init_waitqueue_head(&vm->host_resp);
  1380          vm->vdev = vdev;
  1381          INIT_WORK(&vm->wq, virtio_mem_run_wq);
  1382          mutex_init(&vm->hotplug_mutex);
  1383          INIT_LIST_HEAD(&vm->next);
  1384          spin_lock_init(&vm->removal_lock);
  1385          hrtimer_init(&vm->retry_timer, CLOCK_MONOTONIC, 
HRTIMER_MODE_REL);
  1386          vm->retry_timer.function = virtio_mem_timer_expired;
  1387  
  1388          /* register the virtqueue */
  1389          rc = virtio_mem_init_vq(vm);
  1390          if (rc)
  1391                  goto out_free_vm;
  1392  
  1393          /* initialize the device by querying the config */
  1394          rc = virtio_mem_init(vm);
  1395          if (rc)
  1396                  goto out_del_vq;
  1397  
  1398          /* register callbacks */
  1399          vm->memory_notifier.notifier_call = 
virtio_mem_memory_notifier_cb;
  1400          rc = register_memory_notifier(&vm->memory_notifier);
  1401          if (rc)
  1402                  goto out_del_vq;
  1403          rc = register_virtio_mem_device(vm);
  1404          if (rc)
  1405                  goto out_unreg_mem;
  1406  
  1407          virtio_device_ready(vdev);
  1408  
  1409          /* trigger a config update to start processing the 
requested_size */
  1410          atomic_set(&vm->config_changed, 1);
  1411          queue_work(system_freezable_wq, &vm->wq);
  1412  
  1413          return 0;
  1414  out_unreg_mem:
  1415          unregister_memory_notifier(&vm->memory_notifier);
  1416  out_del_vq:
  1417          vdev->config->del_vqs(vdev);
  1418  out_free_vm:
> 1419          kfree(vm);
  1420          vdev->priv = NULL;
  1421  
  1422          return rc;
  1423  }
  1424  

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.config.gz
Description: application/gzip