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Date:   Fri, 08 Dec 2017 13:16:21 -0800
From:   Eric Dumazet <>
To:     Matt Turner <>
Cc:     Eric Dumazet <>,
        "" <>,, Paolo Abeni <>,
        Hannes Frederic Sowa <>,
        "Peter Zijlstra (Intel)" <>,
        Thomas Gleixner <>,
        Ingo Molnar <>,
        Manuel Lauss <>,
        LKML <>,
        netdev <>
Subject: Re: NFS corruption, fixed by echo 1 > /proc/sys/vm/drop_caches --
 next debugging steps?

On Fri, 2017-12-08 at 12:26 -0800, Matt Turner wrote:
> Thanks for the quick reply!
> I tried the patch on top of master, but unfortunately the corruption
> still occurs.

You might try replacing in sbdma_add_rcvbuffer()

sb_new = netdev_alloc_skb(dev, size);


sb_new = alloc_skb(size, GFP_ATOMIC);

Maybe the device does not like having a frame spanning 2 pages.

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