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Re: [Xen-devel] bug: slab corruption (net backend?)

To: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] bug: slab corruption (net backend?)
From: Bin Ren <bin.ren@xxxxxxxxx>
Date: 2005年7月11日 15:29:10 +0100
Cc: Gerd Knorr <kraxel@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, Steven Hand <Steven.Hand@xxxxxxxxxxxx>
Delivery-date: 2005年7月11日 14:27:56 +0000
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Not sure whether this is related or not. Interdomain NFS stops working
with the latest xen-unstable. Haven't taken a closer look though. Last
time the same thing happened was when checksum offloading was added.
- Bin
On 7/11/05, Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> wrote:
>
> On 11 Jul 2005, at 14:25, Gerd Knorr wrote:
>
> >> Can you disable tcp checksum offload (ethtool -K tx off) and see
> >> if you can reproduce this problem?
> >
> > Never seen that again since I've turned off CONFIG_SLAB_DEBUG,
> > which seems to be incompatible with the page mapping the xen
> > backend drivers do.
>
> Well, I'm not 100% sure of this. It looks like guard bytes aren;t
> placed around slab allocations when slab object size is near a power of
> two. But if guard header/footers are added to our skbuff data objects
> then yes: that will be broken for xen netback.
>
> -- Keir
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel 
>
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