On 11/9/2020 6:37 PM, Ferruh Yigit wrote:
On 11/6/2020 2:47 PM, Maxime Coquelin wrote:
This patches fixes virtqueue initialization issue causing
segfault or file descriptor being closed unexpectedly.

The wrong index was passed to init_vring_queue() by
alloc_vring_queue() when a hole in the virtqueue array was
met.

Fixes: 8acd7c213353 ("vhost: fix virtqueues metadata allocation")
Cc: sta...@dpdk.org


Since the issue is introduced in this release, there is nothing to backport and stable tag is not required, removing it in next-net.


But it is fixing a fix, there is a chain, so adding it back, sorry for noise ...

Reported-by: Yu Jiang <yux.ji...@intel.com>
Signed-off-by: Maxime Coquelin <maxime.coque...@redhat.com>
---
  lib/librte_vhost/vhost.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
index 8a151a9c1d..b83cf639eb 100644
--- a/lib/librte_vhost/vhost.c
+++ b/lib/librte_vhost/vhost.c
@@ -605,7 +605,7 @@ alloc_vring_queue(struct virtio_net *dev, uint32_t 
vring_idx)
          }
          dev->virtqueue[i] = vq;
-        init_vring_queue(dev, vring_idx);
+        init_vring_queue(dev, i);
          rte_spinlock_init(&vq->access_lock);
          vq->avail_wrap_counter = 1;
          vq->used_wrap_counter = 1;



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