On Fri, Jul 23, 2021 at 03:31:02AM -0500, Ivan wrote:> On Fri, Jul 23, 2021 at 2:59 AM Michael S. Tsirkin <mst at
redhat.com> wrote:
> >
> > On Thu, Jul 22, 2021 at 11:50:11PM -0500, Ivan wrote:
> > > On Thu, Jul 22, 2021 at 11:25 PM Jason Wang <jasowang at
redhat.com> wrote:
> > > > ? 2021/7/23 ??10:54, Ivan ??:
> > > > > On Thu, Jul 22, 2021 at 9:37 PM Jason Wang <jasowang
at redhat.com> wrote:
> > > > >> Does it work if you turn off lro before enabling
the forwarding?
> > > > > 0 root at NuRaid:~# ethtool -K eth0 lro off
> > > > > Actual changes:
> > > > > rx-lro: on [requested off]
> > > > > Could not change any device features
> > > >
> > > > Ok, it looks like the device misses the
VIRTIO_NET_F_CTRL_GUEST_OFFLOADS
> > > > which makes it impossible to change the LRO setting.
> > > >
> > > > Did you use qemu? If yes, what's the qemu version
you've used?
> > >
> > > These are VirtualBox machines, which I've been using for
years with
> > > longterm kernels 4.19, and I never had such a problem.? But now
that I
> > > tried upgrading to kernels 5.10 or 5.13 -- the panics started.?
These
> > > are just generic kernel builds, and a minimalistic userspace.
> >
> > I would be useful to see the features your virtualbox instance
provides
> >
> > cat /sys/class/net/eth0/device/features
> >
> > replacing eth0 with device name as appropriate
>
> # grep . /sys/class/net/eth0/device/* 2>/dev/null
> /sys/class/net/eth0/device/device:0x0001
> /sys/class/net/eth0/device/
> features:1100010110111011111100000000000000000000000000000000000000000000
> /sys/class/net/eth0/device/modalias:virtio:d00000001v00001AF4
> /sys/class/net/eth0/device/status:0x00000007
> /sys/class/net/eth0/device/uevent:DRIVER=virtio_net
> /sys/class/net/eth0/device/uevent:MODALIAS=virtio:d00000001v00001AF4
> /sys/class/net/eth0/device/vendor:0x1af4
>
> # lspci -vv -nn
> 00:03.0 Ethernet controller [0200]: Red Hat, Inc. Virtio network device
> [1af4:1000]
> ? ? ? ? Subsystem: Red Hat, Inc. Virtio network device [1af4:0001]
> ? ? ? ? Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
> Stepping- SERR- FastB2B- DisINTx-
> ? ? ? ? Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort-
> <MAbort- >SERR- <PERR- INTx-
> ? ? ? ? Latency: 64
> ? ? ? ? Interrupt: pin A routed to IRQ 19
> ? ? ? ? Region 0: I/O ports at d000 [size=32]
> ? ? ? ? Capabilities: [80] Null
> ? ? ? ? Kernel driver in use: virtio-pci
> ? ? ? ? Kernel modules: virtio_pci
>
Disabling guest offloads reproduces the warning, but not the crash
for me.
--
MST