From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Re: NFS corruption, fixed by echo 1 > /proc/sys/vm/drop_caches --
 next debugging steps?
Date: Fri, 08 Dec 2017 13:16:21 -0800
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Cc: Eric Dumazet <edumazet-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
        "linux-mips-6z/3iImG2C8G8FEW9MqTrA@public.gmane.org" <linux-mips-6z/3iImG2C8G8FEW9MqTrA@public.gmane.org>,
        linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Paolo Abeni <pabeni-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
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To: Matt Turner <mattst88-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
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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);

by 

sb_new = alloc_skb(size, GFP_ATOMIC);

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


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