netdev - Re: [PATCH] vhost_net: initialize rx_ring in vhost_net

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Message-ID: <485f4035-8e7a-a38d-8506-141e4d12587a@redhat.com>
Date:   Fri, 9 Mar 2018 14:33:14 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Alexander Potapenko <glider@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Cc:     Dmitriy Vyukov <dvyukov@...gle.com>, mst@...hat.com,
        kvm@...r.kernel.org, Networking <netdev@...r.kernel.org>
Subject: Re: [PATCH] vhost_net: initialize rx_ring in vhost_net_open()



On 2018年03月08日 23:50, Alexander Potapenko wrote:
> On Thu, Mar 8, 2018 at 4:45 PM, Eric Dumazet<eric.dumazet@...il.com>  wrote:
>> On 03/08/2018 07:20 AM, Alexander Potapenko wrote:
>>> On Thu, Mar 8, 2018 at 4:15 PM, Eric Dumazet<eric.dumazet@...il.com>
>>> wrote:
>>>>
>>>> On 03/08/2018 05:37 AM, Alexander Potapenko wrote:
>>>>> KMSAN reported a use of uninit memory in vhost_net_buf_unproduce()
>>>>> while trying to access n->vqs[VHOST_NET_VQ_TX].rx_ring:
>>>>>
>>>>>
>>>>> ==================================================================
>>>>>
>>>>> Signed-off-by: Alexander Potapenko<glider@...gle.com>
>>>>
>>>> Please identify bug origin with a Fixes: tag
>>> Fixes: 5990a30510ed1 ("tun/tap: use ptr_ring instead of skb_array")
>> Please send a V2 with this added tag. patchwork does not recognize it yet.
> Ok, will do. Thanks for reminding about the tag!

The commit should be c67df11f6e480 ("vhost_net: try batch dequing from 
skb array").

Let me squash this patch into my series.

Thanks