* [PATCH] vhost: fix read vs write lock mismatch
@ 2024-11-18 16:24 Stephen Hemminger
0 siblings, 0 replies; only message in thread
From: Stephen Hemminger @ 2024-11-18 16:24 UTC (permalink / raw)
To: dev
Cc: Stephen Hemminger, david.marchand, stable, Maxime Coquelin,
Chenbo Xia, Eelco Chaudron
If lock is acquired for write, it must be released for write
or a deadlock is likely.
Bugzilla ID: 1582
Fixes: 9fc93a1e2320 ("vhost: fix virtqueue access check in datapath")
Cc: david.marchand@redhat.com
Cc: stable@dpdk.org
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
lib/vhost/virtio_net.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/vhost/virtio_net.c b/lib/vhost/virtio_net.c
index 298a5dae74..d764d4bc6a 100644
--- a/lib/vhost/virtio_net.c
+++ b/lib/vhost/virtio_net.c
@@ -2538,7 +2538,7 @@ virtio_dev_rx_async_submit(struct virtio_net *dev, struct vhost_virtqueue *vq,
if (unlikely(!vq->access_ok)) {
vhost_user_iotlb_rd_unlock(vq);
- rte_rwlock_read_unlock(&vq->access_lock);
+ rte_rwlock_write_unlock(&vq->access_lock);
virtio_dev_vring_translate(dev, vq);
goto out_no_unlock;
--
2.45.2
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2024-11-18 16:24 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-11-18 16:24 [PATCH] vhost: fix read vs write lock mismatch Stephen Hemminger
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).