[dpdk-dev] [Bug 794] [dpdk-19.11.10] loopback_multi_queues: core dumped when quit vhost testpmd

[bugzilla at dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=794

            Bug ID: 794
           Summary: [dpdk-19.11.10] loopback_multi_queues: core dumped
                    when quit vhost testpmd
           Product: DPDK
           Version: 19.11
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: vhost/virtio
          Assignee: dev at dpdk.org
          Reporter: linglix.chen at intel.com
  Target Milestone: ---

Environment
DPDK version: 
19.11.10-rc1:179f2a3a8a56600a66e4e0830bbe993be67f9d7e
Other software versions: N/A
OS: Ubuntu 20.04.2 LTS/Linux 5.11.16-051116-generic
Compiler: gcc version 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)
Hardware platform: Intel(R) Xeon(R) Platinum 8280M CPU @ 2.70GHz
NIC hardware: FVL-40g
NIC firmware & driver: 
driver: i40e
version: 5.11.16-051116-generic
firmware-version: 8.30 0x8000a4ae 1.2926.0

Steps to reproduce
1. Launch vhost testpmd
x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 31,32 -n 4  --file-prefix=vhost
--no-pci  --vdev 'net_vhost0,iface=vhost-net,queues=1' -- -i --nb-cores=1
--rxq=1 --txq=1 --txd=1024 --rxd=1024

2. Launch virtio-user 
x86_64-native-linuxapp-gcc/app/dpdk-testpmd -l 29,30 -n 4  --file-prefix=virtio
--no-pci  --vdev
'net_virtio_user0,mac=00:01:02:03:04:05,path=./vhost-net,queues=1,packed_vq=0,in_order=1,mrg_rxbuf=0'
--single-file-segments -- -i --nb-cores=1 --rxq=1 --txq=1 --txd=1024 --rxd=1024

3.quit vhost testpmd
testpmd> quit

Show the output from the previous commands.
Stopping port 0...
Stopping ports...
Done

Shutting down port 0...
Closing ports...
VHOST_CONFIG: free connfd = 24 for device 'vhost-net'

Port 0: link state change event
free(): invalid pointer
Aborted (core dumped)

Expected Result:
quit normal

Regression
Is this issue a regression: (Y/N) Y
First bad commit id: commit eb35473b23045d32d4abd4d31ca36483e37953df
Author: Maxime Coquelin <maxime.coquelin at redhat.com>
Date:   Tue Jun 29 18:11:28 2021 +0200

    vhost: fix missing guest pages table NUMA realloc

    [ upstream commit 57589cdfd784e6704ded490d80038584d6ade9df ]

    When the guest allocates virtqueues on a different NUMA node
    than the one the Vhost metadata are allocated, both the Vhost
    device struct and the virtqueues struct are reallocated.

    However, reallocating the guest pages table was missing, which
    likely causes at least one cross-NUMA accesses for every burst
    of packets.

    This patch reallocates this table on the same NUMA node as the
    other metadata.

    Fixes: e246896178e6 ("vhost: get guest/host physical address mappings")

    Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
    Reviewed-by: Chenbo Xia <chenbo.xia at intel.com>

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