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vhost-user-blk: fix the resize crash

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If the os is not installed and doesn't have the virtio guest driver,
the vhost dev isn't started, so the dev->vdev is NULL.

Reproduce: mount a Win 2019 iso, go into the install ui, then resize
the virtio-blk device, qemu crash.

Signed-off-by: Li Feng <fengli@smartx.com>
Message-Id: <20220919121816.3252223-1-fengli@smartx.com>
Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Li Feng 2022-09-19 20:18:16 +08:00 • committed by Kevin Wolf
parent 7845e73147
commit ab6075d849
1 changed files with 4 additions and 0 deletions
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4
hw/block/vhost-user-blk.c
View file

@ -97,6 +97,10 @@ static int vhost_user_blk_handle_config_change(struct vhost_dev *dev)
VHostUserBlk *s = VHOST_USER_BLK(dev->vdev); VHostUserBlk *s = VHOST_USER_BLK(dev->vdev);
Error *local_err = NULL; Error *local_err = NULL;
if (!dev->started) {
return 0;
}
ret = vhost_dev_get_config(dev, (uint8_t *)&blkcfg, ret = vhost_dev_get_config(dev, (uint8_t *)&blkcfg,
vdev->config_len, &local_err); vdev->config_len, &local_err);
if (ret < 0) { if (ret < 0) {