From: Jean-Philippe Brucker jean-philippe.brucker@arm.com
[ 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/20180524101021.49880-1-jean-philippe.brucker@arm.co... Signed-off-by: Jean-Philippe Brucker jean-philippe.brucker@arm.com Reviewed-by: Greg Kurz groug@kaod.org Cc: Eric Van Hensbergen ericvh@gmail.com Cc: Ron Minnich rminnich@sandia.gov Cc: Latchesar Ionkov lucho@ionkov.net Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Dominique Martinet dominique.martinet@cea.fr Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- net/9p/trans_virtio.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c index 05006cbb3361..eaacce086427 100644 --- a/net/9p/trans_virtio.c +++ b/net/9p/trans_virtio.c @@ -563,7 +563,7 @@ static int p9_virtio_probe(struct virtio_device *vdev) 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); @@ -616,6 +616,7 @@ static int p9_virtio_probe(struct virtio_device *vdev) kfree(tag); out_free_vq: vdev->config->del_vqs(vdev); +out_free_chan: kfree(chan); fail: return err;