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<base href="https://bugs.dpdk.org/">
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<body><table border="1" cellspacing="0" cellpadding="8" class="bz_new_table">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - [dpdk-24.07] virtio_smoke/test_virtio_loopback: Vhost or Virtio hang"
href="https://bugs.dpdk.org/show_bug.cgi?id=1462">1462</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[dpdk-24.07] virtio_smoke/test_virtio_loopback: Vhost or Virtio hang
</td>
</tr>
<tr>
<th>Product</th>
<td>DPDK
</td>
</tr>
<tr>
<th>Version</th>
<td>24.07
</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>yux.jiang@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: 24.07.0-rc0
OS: Ubuntu 22.04.3 LTS; 5.15.0-82-generic
Compiler: gcc version 11.4.0
Hardware platform: Intel(R) Xeon(R) Platinum 8280M CPU @ 2.70GHz
[Test Setup]
Steps to reproduce
List the steps to reproduce the issue.
1.Build dpdk
rm -rf x86_64-native-linuxapp-gcc
CC=gcc meson -Denable_kmods=True -Dlibdir=lib --default-library=static
x86_64-native-linuxapp-gcc
ninja -C x86_64-native-linuxapp-gcc
2.Launch vhost as client mode
x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-3 -n 4 --file-prefix=vhost
--no-pci --vdev 'eth_vhost0,iface=vhost-net,client=1,queues=8' -- -i
--nb-cores=2 --rxq=2 --txq=2
3, Launch virtio-user as server mode
x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 4-6 -n 4 --file-prefix=virtio1
--no-pci --vdev
'net_virtio_user0,mac=00:01:02:03:04:05,path=./vhost-net,server=1,queues=8,mrg_rxbuf=1,in_order=1'
--single-file-segments -- -i --tx-offloads=0x0 --enable-hw-vlan-strip
--rss-ip --nb-cores=2 --rxq=8 --txq=8
[Actual Result]
Vhost hang's log
root@dut214:~/dpdk# x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-3 -n 4
--file-prefix=vhost --no-pci --vdev
'eth_vhost0,iface=vhost-net,client=1,queues=8' -- -i --nb-cores=2 --rxq=2
--txq=2
EAL: Detected CPU lcores: 112
EAL: Detected NUMA nodes: 2
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/vhost/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: VFIO support initialized
Interactive-mode selected
testpmd: create a new mbuf pool <mb_pool_0>: n=163456, size=2176, socket=0
testpmd: preferred mempool ops selected: ring_mp_mc
Warning! port-topology=paired and odd forward ports number, the last port will
pair with itself.
Configuring Port 0 (socket 0)
VHOST_CONFIG: (vhost-net) vhost-user client: socket created, fd: 33
VHOST_CONFIG: (vhost-net) Setting max queue pairs to 8
Virtio-user hang, vhost's log:
root@dut214:~/dpdk# x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-3 -n 4
--file-prefix=vhost --no-pci --vdev
'eth_vhost0,iface=vhost-net,client=1,queues=8' -- -i --nb-cores=2 --rxq=2
--txq=2
EAL: Detected CPU lcores: 112
EAL: Detected NUMA nodes: 2
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/vhost/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: VFIO support initialized
Interactive-mode selected
testpmd: create a new mbuf pool <mb_pool_0>: n=163456, size=2176, socket=0
testpmd: preferred mempool ops selected: ring_mp_mc
Warning! port-topology=paired and odd forward ports number, the last port will
pair with itself.
Configuring Port 0 (socket 0)
VHOST_CONFIG: (vhost-net) vhost-user client: socket created, fd: 33
VHOST_CONFIG: (vhost-net) Setting max queue pairs to 8
VHOST_CONFIG: (vhost-net) failed to connect: No such file or directory
VHOST_CONFIG: (vhost-net) reconnecting...
Port 0: 56:48:4F:53:54:00
Checking link statuses...
Done
testpmd> VHOST_CONFIG: (vhost-net) connected
VHOST_CONFIG: (vhost-net) new device, handle is 0
testpmd>
[Expected Result]
Not hang
root@dut214:~/dpdk# x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 1-3 -n 4
--file-prefix=vhost --no-pci --vdev
'eth_vhost0,iface=vhost-net,client=1,queues=8' -- -i --nb-cores=2 --rxq=2
--txq=2
EAL: Detected CPU lcores: 112
EAL: Detected NUMA nodes: 2
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/vhost/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: VFIO support initialized
Interactive-mode selected
testpmd: create a new mbuf pool <mb_pool_0>: n=163456, size=2176, socket=0
testpmd: preferred mempool ops selected: ring_mp_mc
Warning! port-topology=paired and odd forward ports number, the last port will
pair with itself.
Configuring Port 0 (socket 0)
VHOST_CONFIG: (vhost-net) vhost-user client: socket created, fd: 33
VHOST_CONFIG: (vhost-net) Setting max queue pairs to 8
VHOST_CONFIG: (vhost-net) failed to connect: No such file or directory
VHOST_CONFIG: (vhost-net) reconnecting...
Port 0: 56:48:4F:53:54:00
Checking link statuses...
Done
testpmd>
[Regression]
Is this issue a regression: (Y)
Bad commit id1: ///////Virtio hang
02a7ca5114 vhost: improve fdset initialization
Bad commit id2: ///////vhost hang
c23f6373c8 vhost: hide synchronization within FD manager
</pre>
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