diff mbox series

[1/5] vhost: fix missing virtqueue lock protection

Message ID 20220127145655.558029-2-maxime.coquelin@redhat.com (mailing list archive)
State Superseded, archived
Delegated to: Maxime Coquelin
Headers
Series vhost: introduce per-virtqueue stats API |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Maxime Coquelin Jan. 27, 2022, 2:56 p.m. UTC 
  This patch ensures virtqueue metadata are not being
modified while rte_vhost_vring_call() is executed.

Fixes: 6c299bb7322f ("vhost: introduce vring call API")
Cc: stable@dpdk.org

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
 lib/vhost/vhost.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/lib/vhost/vhost.c b/lib/vhost/vhost.c
index f59ca6c157..42c01abf25 100644
--- a/lib/vhost/vhost.c
+++ b/lib/vhost/vhost.c
@@ -1294,11 +1294,15 @@  rte_vhost_vring_call(int vid, uint16_t vring_idx)
 	if (!vq)
 		return -1;
 
+	rte_spinlock_lock(&vq->access_lock);
+
 	if (vq_is_packed(dev))
 		vhost_vring_call_packed(dev, vq);
 	else
 		vhost_vring_call_split(dev, vq);
 
+	rte_spinlock_unlock(&vq->access_lock);
+
 	return 0;
 }