netdev - Re: [PATCH net-next v3] virtio-net: page_to_skb() use build

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Message-ID: <8e8e8f5c-16aa-668c-9567-b5c1f91e19dc@redhat.com>
Date:   Wed, 21 Apr 2021 11:26:17 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
        Mat Martineau <mathew.j.martineau@...ux.intel.com>
Cc:     netdev@...r.kernel.org, "Michael S. Tsirkin" <mst@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH net-next v3] virtio-net: page_to_skb() use build_skb when
 there's sufficient tailroom


在 2021/4/20 下午8:35, Xuan Zhuo 写道:
>> I realize this has been merged to net-next already, but I'm getting a
>> use-after-free with KASAN in page_to_skb() with this patch. Reverting this
>> change fixes the UAF. I've included the KASAN dump below, and a couple of
>> comments inline.
> I think something went wrong, this was merged before it was acked. Based on the
> Jason Wang's comments, there are still some tests that have not been done?
>
> If it has been merged, what should I do now, can I make up the test?


I think so, please test net-next which should contains the fixes from Eric.

Thanks


>
>
> Thanks.
>