Tried 5.4.0-33.37 but still can not reproduce. On kvm guest and host, the kernels are 5.4.0-33.37.
ubuntu@vm1:~$ uname -a;netperf -H 192.168.100.10 -t TCP_STREAM -l 60 -- -m 1472 Linux vm1 5.4.0-33-generic #37-Ubuntu SMP Thu May 21 12:55:12 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.100.10 () port 0 AF_INET : demo Recv Send Send Socket Socket Message Elapsed Size Size Size Time Throughput bytes bytes bytes secs. 10^6bits/sec
131072 16384 1472 60.04 498.85
$ uname -a;dmesg | tail -20 Linux kreiken 5.4.0-33-generic #37-Ubuntu SMP Thu May 21 12:55:12 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux [ 761.715382] br00: port 1(enp189s0f0v0) entered disabled state [ 761.715648] device enp189s0f0v0 entered promiscuous mode [ 761.728784] br00: port 2(enp189s0f0v1) entered blocking state [ 761.728787] br00: port 2(enp189s0f0v1) entered disabled state [ 761.728943] device enp189s0f0v1 entered promiscuous mode [ 761.742500] br00: port 3(enp189s0f0) entered blocking state [ 761.742503] br00: port 3(enp189s0f0) entered disabled state [ 761.742781] device enp189s0f0 entered promiscuous mode [ 761.742936] hns3 0000:bd:00.0 enp189s0f0: disable vlan filter [ 761.743034] br00: port 3(enp189s0f0) entered blocking state [ 761.743036] br00: port 3(enp189s0f0) entered forwarding state [ 761.864861] VFIO - User Level meta-driver version: 0.3 [ 761.898013] device enp189s0f0v0 left promiscuous mode [ 761.898044] br00: port 1(enp189s0f0v0) entered disabled state [ 762.240434] audit: type=1400 audit(1606889769.899:43): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="libvirt-ee75f599-dbef-4703-b13b-6f3c0bab2c66" pid=3834 comm="apparmor_parser" [ 762.311350] vfio-pci 0000:bd:01.0: enabling device (0000 -> 0002) [ 762.608755] device enp189s0f0v1 left promiscuous mode [ 762.608768] br00: port 2(enp189s0f0v1) entered disabled state [ 762.955569] audit: type=1400 audit(1606889770.615:44): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="libvirt-6733ce35-cf1e-4497-b8d3-6816cc66405d" pid=3848 comm="apparmor_parser" [ 763.019507] vfio-pci 0000:bd:01.1: enabling device (0000 -> 0002)
Tried 5.4.0-33.37 but still can not reproduce. On kvm guest and host, the kernels are 5.4.0-33.37.
ubuntu@vm1:~$ uname -a;netperf -H 192.168.100.10 -t TCP_STREAM -l 60 -- -m 1472
Linux vm1 5.4.0-33-generic #37-Ubuntu SMP Thu May 21 12:55:12 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.100.10 () port 0 AF_INET : demo
Recv Send Send
Socket Socket Message Elapsed
Size Size Size Time Throughput
bytes bytes bytes secs. 10^6bits/sec
131072 16384 1472 60.04 498.85
$ uname -a;dmesg | tail -20 9.899:43) : apparmor="STATUS" operation= "profile_ replace" profile= "unconfined" name="libvirt- ee75f599- dbef-4703- b13b-6f3c0bab2c 66" pid=3834 comm="apparmor_ parser" 0.615:44) : apparmor="STATUS" operation= "profile_ replace" profile= "unconfined" name="libvirt- 6733ce35- cf1e-4497- b8d3-6816cc6640 5d" pid=3848 comm="apparmor_ parser"
Linux kreiken 5.4.0-33-generic #37-Ubuntu SMP Thu May 21 12:55:12 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux
[ 761.715382] br00: port 1(enp189s0f0v0) entered disabled state
[ 761.715648] device enp189s0f0v0 entered promiscuous mode
[ 761.728784] br00: port 2(enp189s0f0v1) entered blocking state
[ 761.728787] br00: port 2(enp189s0f0v1) entered disabled state
[ 761.728943] device enp189s0f0v1 entered promiscuous mode
[ 761.742500] br00: port 3(enp189s0f0) entered blocking state
[ 761.742503] br00: port 3(enp189s0f0) entered disabled state
[ 761.742781] device enp189s0f0 entered promiscuous mode
[ 761.742936] hns3 0000:bd:00.0 enp189s0f0: disable vlan filter
[ 761.743034] br00: port 3(enp189s0f0) entered blocking state
[ 761.743036] br00: port 3(enp189s0f0) entered forwarding state
[ 761.864861] VFIO - User Level meta-driver version: 0.3
[ 761.898013] device enp189s0f0v0 left promiscuous mode
[ 761.898044] br00: port 1(enp189s0f0v0) entered disabled state
[ 762.240434] audit: type=1400 audit(160688976
[ 762.311350] vfio-pci 0000:bd:01.0: enabling device (0000 -> 0002)
[ 762.608755] device enp189s0f0v1 left promiscuous mode
[ 762.608768] br00: port 2(enp189s0f0v1) entered disabled state
[ 762.955569] audit: type=1400 audit(160688977
[ 763.019507] vfio-pci 0000:bd:01.1: enabling device (0000 -> 0002)