<html>
    <head>
      <base href="https://bugs.dpdk.org/">
    </head>
    <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 - [dpdk-25.03] loopback_multi_paths_port_restart: core dumped occurred when exiting testpmd"
   href="https://bugs.dpdk.org/show_bug.cgi?id=1681">1681</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[dpdk-25.03] loopback_multi_paths_port_restart: core dumped occurred when exiting testpmd
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>25.03
          </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>normal
          </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>songx.jiale@intel.com
          </td>
        </tr>

        <tr>
          <th>Target Milestone</th>
          <td>---
          </td>
        </tr></table>
      <p>
        <div class="bz_comment_block">
          <pre class="bz_comment_text">Environment
===========
DPDK version: 5f37ee9c859f3ce08ca4364f1d8c0e70ec33ac83 version: 25.03.0-rc2
OS: Anolis OS 8.9/5.10.134-16.2.an8.x86_64
Compiler: gcc version 8.5.0 20210514
Hardware platform: Intel(R) Xeon(R) Gold 6139 CPU @ 2.30GHz
NIC hardware: N/A
NIC firmware: N/A

Test Setup
Steps to reproduce
==================
1. start testpmd with vhost-net
x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 3-5 -n 4 --no-pci --vdev
'net_vhost0,iface=vhost-net,queues=1,client=0' -- -i --nb-cores=1 --txd=1024
--rxd=1024

2. exit testpmd
note: Currently only reproduced on Anolis OS.
testpmd> quit

Results: 
========
testpmd> quitStopping port 0...
Stopping ports...
DoneShutting down port 0...
Closing ports...
Port 0 is closed
DoneBye...
Segmentation fault (core dumped)

Expected Result:
================
Testpmd exits normally without core dumped.

bad commit:
===========
commit 0e38b42bf61c03b9350f3c96fa421c2c28e815cc
Author: David Marchand <<a href="mailto:david.marchand@redhat.com">david.marchand@redhat.com</a>>
Date:   Tue Jun 11 15:39:57 2024 +0200

    vhost: manage FD with epoll

    Switch to epoll so that the concern over the poll() fd array
    is removed.
    Add a simple list of used entries and track the next free entry.

    epoll() is thread safe, we no more need a synchronization
    mechanism and so can remove the notification pipe.

    Signed-off-by: David Marchand <<a href="mailto:david.marchand@redhat.com">david.marchand@redhat.com</a>>
    Signed-off-by: Maxime Coquelin <<a href="mailto:maxime.coquelin@redhat.com">maxime.coquelin@redhat.com</a>>
    Acked-by: David Marchand <<a href="mailto:david.marchand@redhat.com">david.marchand@redhat.com</a>>

 lib/vhost/fd_man.c | 439 +++++++++++++++++------------------------------------
 lib/vhost/fd_man.h |   5 +-
 2 files changed, 144 insertions, 300 deletions
          </pre>
        </div>
      </p>


      <hr>
      <span>You are receiving this mail because:</span>

      <ul>
          <li>You are the assignee for the bug.</li>
      </ul>
      <div itemscope itemtype="http://schema.org/EmailMessage">
        <div itemprop="action" itemscope itemtype="http://schema.org/ViewAction">
          
          <link itemprop="url" href="https://bugs.dpdk.org/show_bug.cgi?id=1681">
          <meta itemprop="name" content="View bug">
        </div>
        <meta itemprop="description" content="Bugzilla bug update notification">
      </div>
    </body>
</html>