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    <body><table border="1" cellspacing="0" cellpadding="8" class="bz_new_table">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - Virtio_user as Exception Path in secondary process report mistakes ( virtio_user_notify_queue(): failed to kick backend: Bad file descriptor)"
   href="https://bugs.dpdk.org/show_bug.cgi?id=1467">1467</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Virtio_user as Exception Path  in secondary  process report mistakes ( virtio_user_notify_queue(): failed to kick backend: Bad file descriptor)
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DPDK
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>21.11
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>UNCONFIRMED
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>critical
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>vhost/virtio
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>dev@dpdk.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>952983126@qq.com
          </td>
        </tr>

        <tr>
          <th>Target Milestone</th>
          <td>---
          </td>
        </tr></table>
      <p>
        <div class="bz_comment_block">
          <pre class="bz_comment_text">when using Virtio_user as Exception Path ,configure the port in the primary
process , virtio_user do rx and tx in the secondary process. it generates a
mistake in tx such as (virtio_user_notify_queue(): failed to kick backend: Bad
file descriptor).

in my opinion ,when initialize the second process , is it properly to copy the
callfd and kickfd  which are initialized by primay process  to the secondary
process ? in this situation ,i don't think  the secondary process could find
the correct kickfd  ,and it make kthread work  abnormal.

please see the question ,thank you !!!
          </pre>
        </div>
      </p>


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