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vhost_virtio_fuzzing/tso_forward_pkt: testpmd cannot exit normally when test fuzz

DPDK/vhost/virtio Bug 1682 [email protected] 1 participant 2 messages Mar 25, 2025

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https://bugs.dpdk.org/show_bug.cgi?id=1682

            Bug ID: 1682
           Summary: [dpdk-25.03] vhost_virtio_fuzzing/tso_forward_pkt:
                    testpmd cannot exit normally when test fuzz
           Product: DPDK
           Version: 25.03
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: vhost/virtio
          Assignee: [email protected]
          Reporter: [email protected]

Target Milestone: ---

Created attachment 305
--> https://bugs.dpdk.org/attachment.cgi?id=305&action=edit
dpdk fuzz test file

Environment
===========
DPDK version: 5f37ee9c859f3ce08ca4364f1d8c0e70ec33ac83 version: 25.03.0-rc2
OS: Red Hat Enterprise Linux 9.4/5.14.0-427.13.1.el9_4.x86_64
Compiler: clang version 17.0.6
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. create packet file(If the environment already has these packets, can skip this step)
mkdir -p /tmp/fuzz/vhost_pcap
python3 pkt.py

2. Compile dpdk and fuzz
tar zxf fuzz.tar.gz
cp -r fuzz /root/dpdk/app/
sed -i "s/'test-sad',/'test-sad',\n 'fuzz',/g" app/meson.build

rm -rf x86_64-native-linuxapp-clang
CC=clang meson --werror -Denable_kmods=True -Dbuildtype=debug -Db_lundef=false -Db_sanitize=address x86_64-native-linuxapp-clang
ninja -C x86_64-native-linuxapp-clang

3. create vhost
rm -rf /tmp/sock0
x86_64-native-linuxapp-clang/app/dpdk-fuzz /tmp/fuzz/vhost_pcap/ -- -ignore_remaining_args=1 -l 1 -n 4 --file-prefix=vhost --vdev 'net_vhost0,iface=/tmp/sock0,queues=4' -- --rxq=4 --txq=4 --txd=1024 --rxd=1024 RTE>>vhost_autotest

4. start testpmd with virtio device x86_64-native-linuxapp-clang/app/dpdk-testpmd -l 1,2 -n 4 --file-prefix=virtio_26049_20250311133724 --no-pci --vdev=net_virtio_user0,mac=00:01:02:03:04:05,path=/tmp/sock0,queues=4 -- -i --rxq=4 --txq=4 --txd=1024 --rxd=1024

5. set csum fwd and start fwd
set fwd csum
start
show port stats all
note: Loop query the port status. when the bps of the port receiving and transmitting packets is found to be 0, exit testpmd.

6. exit testpmd
quit

Results:
========
Unable to exit testpmd, will get stuck.

Expected Result:
================
Testpmd receives and sends packets normally and exits normally.

bad commit:
===========
commit 76730c7b9b5a35d1a74d45a08153a03bdb1b26f8

Author: Jie Hai <[email protected]>
Date:   Fri Feb 14 09:56:38 2025 +0800

app/testpmd: use packet type parsing API

1. Use rte_net_get_ptype() to parse packets instead.
2. Support TSO for packets with IPv6 extension header.

Signed-off-by Jie Hai <[email protected]>
 lib/vhost/fd_man.c | 439 +++++++++++++++++------------------------------------
 lib/vhost/fd_man.h |   5 +-
 2 files changed, 144 insertions, 300 deletions
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#1 lore raw

https://bugs.dpdk.org/show_bug.cgi?id=1682

Jiale Song ([email protected]) changed:

What |Removed |Added
----------------------------------------------------------------------------

             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Jiale Song ([email protected]) --- The issue no longer reproduced in the DPDK 25.03 release version. fix patch: https://patchwork.dpdk.org/project/dpdk/list/?series=34907

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