Free ubuf when vhost_dev_ioctl for VHOST_SET_OWNER fails.
Signed-off-by: Asias He <as...@redhat.com>
---
drivers/vhost/net.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index b2f6b41..eb73217 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -152,6 +152,19 @@ void vhost_ubuf_put_and_wait(struct vhost_ubuf_ref *ubufs)
kfree(ubufs);
}
+static void vhost_net_clear_ubuf_info(struct vhost_net *n)
+{
+
+ bool zcopy;
+ int i;
+
+ for (i = 0; i < n->dev.nvqs; ++i) {
+ zcopy = vhost_zcopy_mask & (0x1 << i);
+ if (zcopy)
+ kfree(n->vqs[i].ubuf_info);
+ }
+}
+
int vhost_net_set_ubuf_info(struct vhost_net *n)
{
bool zcopy;
@@ -1069,10 +1082,13 @@ static long vhost_net_ioctl(struct file *f, unsigned
int ioctl,
goto out;
}
r = vhost_dev_ioctl(&n->dev, ioctl, argp);
- if (r == -ENOIOCTLCMD)
+ if (r == -ENOIOCTLCMD) {
r = vhost_vring_ioctl(&n->dev, ioctl, argp);
- else
+ } else {
+ if (r < 0 && ioctl == VHOST_SET_OWNER)
+ vhost_net_clear_ubuf_info(n);
vhost_net_flush(n);
+ }
out:
mutex_unlock(&n->dev.mutex);
return r;
--
1.8.1.4
--
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