netdev - Re: [mac80211] BUG_ON with current -git (4.8.0-11417-g24532f7)

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Message-ID: <1476434561.31114.7.camel@sipsolutions.net>
Date:   Fri, 14 Oct 2016 10:42:41 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc:     Andy Lutomirski <luto@...capital.net>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        "linux-next@...r.kernel.org" <linux-next@...r.kernel.org>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        Network Development <netdev@...r.kernel.org>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Linux Wireless List <linux-wireless@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jouni Malinen <j@...fi>
Subject: Re: [mac80211] BUG_ON with current -git (4.8.0-11417-g24532f7)

On Fri, 2016-10-14 at 09:41 +0100, Ard Biesheuvel wrote:

> > I assume the stack buffer itself is not the problem here, but aad,
> > which is allocated on the stack one frame up.
> > Do we really need to revert the whole patch to fix that?
> 
> Ah never mind, this is about 'odata'. Apologies, should have read
> first

Right, odata also goes into an sg list and further on.

I think we should wait for Herbert to chime in before we do any further
work though, perhaps he has any better ideas.

johannes