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Date: Tue, 5 May 2020 22:15:25 +0800
From: kbuild test robot <lkp@...el.com>
To: David Hildenbrand <david@...hat.com>
Cc: kbuild-all@...ts.01.org, kvm@...r.kernel.org,
virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
"Michael S. Tsirkin" <mst@...hat.com>,
Pankaj Gupta <pankaj.gupta.linux@...il.com>
Subject: [vhost:vhost 8/22] drivers/virtio/virtio_mem.c:1375:20: error:
implicit declaration of function 'kzalloc'; did you mean 'vzalloc'?
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 <lkp@...el.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
---
0-DAY CI Kernel Test Service, Intel Corporation
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