linux-kernel - Re: [PATCH net] vhost: correctly check the return value of translate_desc() in log

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Message-ID: <43623186-8759-507f-836e-0ef633b23264@redhat.com>
Date:   Tue, 19 Feb 2019 14:50:46 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     David Miller <davem@...emloft.net>
Cc:     mst@...hat.com, kvm@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, stephen@...workplumber.org
Subject: Re: [PATCH net] vhost: correctly check the return value of
 translate_desc() in log_used()


On 2019/2/16 上午2:03, David Miller wrote:
> From: Jason Wang<jasowang@...hat.com>
> Date: Fri, 15 Feb 2019 15:53:24 +0800
>
>> When fail, translate_desc() returns negative value, otherwise the
>> number of iovs. So we should fail when the return value is negative
>> instead of a blindly check against zero.
>>
>> Reported-by: Stephen Hemminger<stephen@...workplumber.org>
>> Fixes: cc5e71075947 ("vhost: log dirty page correctly")
>> Signed-off-by: Jason Wang<jasowang@...hat.com>
> Jason, please put the Fixes tag first.
>
> Thank you.


Ok. Will post V2.

Thanks