[dpdk-stable] [dpdk-dev] [PATCH v2] vhost: add sanity check when operating the split ring

[Maxime Coquelin]

On 10/15/21 11:25, Li Feng wrote:
> On Fri, Oct 15, 2021 at 4:52 PM Maxime Coquelin
> <maxime.coquelin at redhat.com> wrote:
>>
>> The title is too vague, I would put something like:
>>
>> vhost: add sanity check on inflight last index
>>
>> On 10/14/21 14:40, Li Feng wrote:
>>> The idx in rte_vhost_set_last_inflight_io_split is from the frontend
>>
>> s/idx/index/
>>
>>> driver, check if it's in the virtqueue range.
>>>
>>> Fixes: bb0c2de9602b ("vhost: add APIs to operate inflight ring")
>>> Cc: stable at dpdk.org
>>>
>>> Signed-off-by: Li Feng <fengli at smartx.com>
>>> ---
>>>    lib/vhost/vhost.c | 3 +++
>>>    1 file changed, 3 insertions(+)
>>>
>>> diff --git a/lib/vhost/vhost.c b/lib/vhost/vhost.c
>>> index 9540522dac..3b674ac320 100644
>>> --- a/lib/vhost/vhost.c
>>> +++ b/lib/vhost/vhost.c
>>> @@ -1226,6 +1226,9 @@ rte_vhost_set_last_inflight_io_split(int vid, uint16_t vring_idx,
>>>        if (unlikely(!vq->inflight_split))
>>>                return -1;
>>>
>>> +     if (unlikely(idx >= vq->size))
>>> +             return -1;
>>> +
>>>        vq->inflight_split->last_inflight_io = idx;
>>>        return 0;
>>>    }
>>>
>>
>> Other than that, this is fine to me:
>>
>> Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>
>>
>> If my suggestions are fine for you, I can fix while applying.
>>
> It's fine.
> 
>> Thanks,
>> Maxime
>>
> 

Applied to dpdk-next-virtio/main.

Thanks,
Maxime