From: Tiwei Bie <tiwei.bie@intel.com>
To: mst@redhat.com, jasowang@redhat.com,
virtualization@lists.linux-foundation.org,
linux-kernel@vger.kernel.org
Cc: Andy Lutomirski <luto@kernel.org>, stable@vger.kernel.org
Subject: [PATCH] virtio_ring: fix num_free handling in error case
Date: Fri, 23 Feb 2018 19:41:30 +0800 [thread overview]
Message-ID: <20180223114130.16332-1-tiwei.bie@intel.com> (raw)
The vq->vq.num_free hasn't been changed when error happens,
so it shouldn't be changed when handling the error.
Fixes: 780bc7903a32 ("virtio_ring: Support DMA APIs")
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
---
drivers/virtio/virtio_ring.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index eb30f3e09a47..71458f493cf8 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -428,8 +428,6 @@ static inline int virtqueue_add(struct virtqueue *_vq,
i = virtio16_to_cpu(_vq->vdev, vq->vring.desc[i].next);
}
- vq->vq.num_free += total_sg;
-
if (indirect)
kfree(desc);
--
2.11.0
next reply other threads:[~2018-02-23 11:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-23 11:41 Tiwei Bie [this message]
2018-02-23 12:47 ` [PATCH] virtio_ring: fix num_free handling in error case Cornelia Huck
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