diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2013-06-06 14:20:39 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-06-11 11:46:21 +0200 |
| commit | 05c05351943cc03bf5c77e86953b24ae6fb21368 (patch) | |
| tree | 51274c86eeca2cd5040979d1fdebd81fe0518a19 /drivers/vhost/net.c | |
| parent | qmi_wwan/cdc_ether: let qmi_wwan handle the Huawei E1820 (diff) | |
| download | linux-05c05351943cc03bf5c77e86953b24ae6fb21368.tar.xz linux-05c05351943cc03bf5c77e86953b24ae6fb21368.zip | |
vhost: check owner before we overwrite ubuf_info
If device has an owner, we shouldn't touch ubuf_info
since it might be in use.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/vhost/net.c')
| -rw-r--r-- | drivers/vhost/net.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index b07d96b8c0d1..8cf5aece8c84 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -1054,6 +1054,10 @@ static long vhost_net_set_owner(struct vhost_net *n) int r; mutex_lock(&n->dev.mutex); + if (vhost_dev_has_owner(&n->dev)) { + r = -EBUSY; + goto out; + } r = vhost_net_set_ubuf_info(n); if (r) goto out; |