netdev - Re: crash in __kfree_skb on v3.18-rc5 with CONFIG_DEBUG

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Message-ID: <1416587848.8629.108.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Fri, 21 Nov 2014 08:37:28 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Chris Mason <clm@...com>
Cc:	netdev@...r.kernel.org
Subject: Re: crash in __kfree_skb on v3.18-rc5 with CONFIG_DEBUG_PAGEALLOC

On Fri, 2014-11-21 at 08:31 -0800, Eric Dumazet wrote:

> Can you double check, or send whole __kfree_skb() disassembly ?
> 
> I do not understand how skb->fclone could possibly trap _at_ this point.

Oh well, I think commit ce1a4ea3f1258 ("net: avoid one atomic operation
in skb_clone()") is the problem, I'll send a revert.



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