Re: PROBLEM: virtio_net LRO kernel panics

Started by Jason Wang on Jul 23, 2021

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在 2021/7/23 上午9:40, Ivan 写道:
On Thu, Jul 22, 2021 at 8:28 PM Tonghao Zhang[off-list ref]  wrote:
quoted
what is your kernel version, and features of your netdevice
Currently, 5.13.4.  But I also tested with kernels back to 5.10, and
it always panics.  I also downloaded the stock generic kernel from
Slackware, and it too panicked.

0 root@NuRaid:~# ethtool -k eth0
Features for eth0:
rx-checksumming: on [fixed]
tx-checksumming: on
         tx-checksum-ipv4: off [fixed]
         tx-checksum-ip-generic: on
         tx-checksum-ipv6: off [fixed]
         tx-checksum-fcoe-crc: off [fixed]
         tx-checksum-sctp: off [fixed]
scatter-gather: on
         tx-scatter-gather: on
         tx-scatter-gather-fraglist: off [fixed]
tcp-segmentation-offload: on
         tx-tcp-segmentation: on
         tx-tcp-ecn-segmentation: off [fixed]
         tx-tcp-mangleid-segmentation: off
         tx-tcp6-segmentation: on
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: on [fixed]

Does it work if you turn off lro before enabling the forwarding?

Btw, using LRO for virtio-net is suspicious, it's actually the GSO in the RX patch not LRO.

Thanks

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