linux-kernel - Re: kernel 3.2.27 on arm: WARNING: at mm/page_alloc.c:2109 __alloc_pages

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Message-ID: <20120831181229.GA8898@electric-eye.fr.zoreil.com>
Date:	Fri, 31 Aug 2012 20:12:29 +0200
From:	Francois Romieu <romieu@...zoreil.com>
To:	David Madore <david+ml@...ore.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: kernel 3.2.27 on arm: WARNING: at mm/page_alloc.c:2109 __alloc_pages_nodemask+0x1d4/0x68c()

David Madore <david+ml@...ore.org> :
[...]
> [  268.976317] ieee80211 phy0: failed to reallocate TX buffer
> [  716.880515] ieee80211 phy0: failed to reallocate TX buffer
> [ 1160.877677] ieee80211 phy0: failed to reallocate TX buffer
> 
> Could they be related?

Yes. This is a pskb_expand_head failure from net/mac80211/tx.c.
The router is experiencing GFP_ATOMIC allocation failure

You should monitor /proc/slabinfo content. A pig may appear over time.

-- 
Ueimor
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