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Re: [lwip-devel] in-place overwriting of payload via static "tcphdr" poi

From: Simon Goldschmidt
Subject: Re: [lwip-devel] in-place overwriting of payload via static "tcphdr" pointer.
Date: Wed, 10 Jan 2018 15:21:50 +0100

Bernhart Pelger wrote:
>>> I know this sounds fundamentally broken, because other arriving packets
>>> might be overwriting the free'd DMA buffers before LWIP or the
>>> application had a chance to process it.
>> This does not *sound* fundamentally broken, it *is*!
> But that's a different topic, not in the scope of this topic, or even
> this mailing list.
> And it doesn't affect me right now with my usage pattern.

It's a different topic, yes. I'm not 100% sure though that it doesn't
affect you. If you see cache issues now, how far away is an overwritten


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