From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Monjalon <thomas.monjalon@6wind.com>
Subject: Re: [PATCH v2] net/virtio-user: fix overflow
Date: Wed, 05 Apr 2017 02:22:27 +0200
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References: <1489486196-7456-1-git-send-email-liuwf@arraynetworks.com.cn>
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Cc: dev@dpdk.org, maxime.coquelin@redhat.com, stable@dpdk.org
To: Yuanhan Liu <yuanhan.liu@linux.intel.com>,
 Wenfeng Liu <liuwf@arraynetworks.com.cn>
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2017-03-15 16:08, Yuanhan Liu:
> On Tue, Mar 14, 2017 at 10:09:56AM +0000, Wenfeng Liu wrote:
> > virtio-user limits the qeueue number to 8 but provides no limit
> > check against the queue number input from user. If a bigger queue
> > number (> 8) is given, there is an overflow issue. Doing a sanity
> > check could avoid it.
> > 
> > Fixes: 37a7eb2ae816 ("net/virtio-user: add device emulation layer")
> > Cc: stable@dpdk.org
> > 
> > Signed-off-by: Wenfeng Liu <liuwf@arraynetworks.com.cn>
> 
> Applied to dpdk-next-virtio.

There is a compilation error when RTE_LIBRTE_VIRTIO_DEBUG_INIT is enabled:
drivers/net/virtio/virtio_user_ethdev.c:423:32:
fatal error: format specifies type 'unsigned int'
but the argument has type 'uint64_t' (aka 'unsigned long') [-Wformat]
                        VIRTIO_USER_ARG_QUEUES_NUM, queues,
                                                    ^~~~~~

I will fix it when pulling next-virtio.

Considering this log is about an error,
does it make sense to have a compile option to enable it?
I was expecting that "git grep 'PMD_INIT_LOG(ERR,' | wc -l" would return 0.
Unfortunately, there are 434 occurences...