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From: Jason Wang <jasowang@redhat.com>
To: Peter Maydell <peter.maydell@linaro.org>,
	Stefan Hajnoczi <stefanha@gmail.com>
Cc: "Markus Armbruster" <armbru@redhat.com>,
	"Andreas Färber" <afaerber@suse.de>,
	qemu-devel <qemu-devel@nongnu.org>,
	"Stefan Hajnoczi" <stefanha@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [Qemu-devel] [PATCH] net: don't use set/get_pointer() in set/get_netdev()
Date: Tue, 09 Sep 2014 11:03:02 +0800	[thread overview]
Message-ID: <540E6DE6.2060704@redhat.com> (raw)
In-Reply-To: <CAFEAcA8cVkTEmL6L+PyNce+8MpKvQ9HeYLQrL0pfhrLyAQRSag@mail.gmail.com>

On 09/05/2014 12:40 AM, Peter Maydell wrote:
> On 4 September 2014 17:21, Stefan Hajnoczi <stefanha@gmail.com> wrote:
>> Unfortunately this patch breaks aarch64-softmmu qtests:
>> GTESTER check-qtest-aarch64
>> Broken pipe
>> GTester: last random seed: R02S6d8ab263ca56f8ae7a4b47bdf93fbc73
>>
>> Please take a look at what is causing this.
> Specifically, it breaks on all the ARM boards which have
> more than one built in ethernet device. Something in your
> patch is probably assuming there is only one (there's
> a somewhat suspicious "[0]" array reference, for instance).
>
> thanks
> -- PMM
>

The '[0]' dereference was introduced after multiqueue is supported.
Since there may be multiple pairs of peers for each nic.

The failure reason looks like the ncs[0] pointer should be validated
before trying to access them.

Will post V2.

Thanks

  reply	other threads:[~2014-09-09  3:03 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-28  7:41 [Qemu-devel] [PATCH] net: don't use set/get_pointer() in set/get_netdev() Jason Wang
2014-09-02 10:38 ` Stefan Hajnoczi
2014-09-04 16:21   ` Stefan Hajnoczi
2014-09-04 16:40     ` Peter Maydell
2014-09-09  3:03       ` Jason Wang [this message]
2014-09-09  3:01     ` Jason Wang

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