linux-kernel - [PATCH] virtio: fix error handling for debug builds

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Message-ID: <1470198074-23894-1-git-send-email-mst@redhat.com>
Date:	Wed, 3 Aug 2016 07:21:22 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	virtualization@...ts.linux-foundation.org,
	Wei Yongjun <weiyj.lk@...il.com>
Subject: [PATCH] virtio: fix error handling for debug builds

On error, virtqueue_add calls START_USE but not
END_USE. Thankfully that's normally empty anyway,
but might not be when debugging. Fix it up.

Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
 drivers/virtio/virtio_ring.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 5ed228d..e383ecd 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -428,6 +428,7 @@ unmap_release:
 	if (indirect)
 		kfree(desc);
 
+	END_USE(vq);
 	return -EIO;
 }
 
-- 
MST