4.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Jean-Philippe Brucker <[email protected]> [ Upstream commit 92aef4675d5b1b55404e1532379e343bed0e5cf2 ] Currently when virtio_find_single_vq fails, we go through del_vqs which throws a warning (Trying to free already-free IRQ). Skip del_vqs if vq allocation failed. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Jean-Philippe Brucker <[email protected]> Reviewed-by: Greg Kurz <[email protected]> Cc: Eric Van Hensbergen <[email protected]> Cc: Ron Minnich <[email protected]> Cc: Latchesar Ionkov <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Dominique Martinet <[email protected]> Signed-off-by: Sasha Levin <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- net/9p/trans_virtio.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/net/9p/trans_virtio.c +++ b/net/9p/trans_virtio.c @@ -574,7 +574,7 @@ static int p9_virtio_probe(struct virtio chan->vq = virtio_find_single_vq(vdev, req_done, "requests"); if (IS_ERR(chan->vq)) { err = PTR_ERR(chan->vq); - goto out_free_vq; + goto out_free_chan; } chan->vq->vdev->priv = chan; spin_lock_init(&chan->lock); @@ -627,6 +627,7 @@ out_free_tag: kfree(tag); out_free_vq: vdev->config->del_vqs(vdev); +out_free_chan: kfree(chan); fail: return err;
