From: "Michael S. Tsirkin" <mst@redhat.com>
To: "Benoît Canet" <benoit.canet@irqsave.net>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] virtio-net with vhost RX stall
Date: Mon, 12 Aug 2013 15:10:39 +0300 [thread overview]
Message-ID: <20130812121039.GA19889@redhat.com> (raw)
In-Reply-To: <20130812115739.GA5061@irqsave.net>
On Mon, Aug 12, 2013 at 01:57:40PM +0200, Benoît Canet wrote:
>
> Hello,
>
> I am chasing a randomly occuring RX stall with virtio-net and vhost-net.
Any chance the bug is fixed by 'virtio_net: fix race in RX VQ processing'?
>
> So far we have a test setup with a kgdb to debug the guest and a regular gdb
> to debug QEMU.
> We are still trying to reproduce the bug in a test environment.
>
> Once the bug reproduced would you have hints on what to look for in virtio-net
> driver state ?
> Any idea to debug this would be wellcome.
>
> Best regards
>
> Benoît
Dump the ring state and index values where they poll, on host and guest.
--
MST
next prev parent reply other threads:[~2013-08-12 12:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-12 11:57 [Qemu-devel] virtio-net with vhost RX stall Benoît Canet
2013-08-12 12:10 ` Michael S. Tsirkin [this message]
2013-08-12 15:45 ` Benoît Canet
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