netdev - Re: page allocation failure

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Message-ID: <20080614065845.GB32585@2ka.mipt.ru>
Date:	Sat, 14 Jun 2008 10:58:45 +0400
From:	Evgeniy Polyakov <johnpol@....mipt.ru>
To:	Denys Fedoryshchenko <denys@...p.net.lb>
Cc:	netdev@...r.kernel.org
Subject: Re: page allocation failure

On Sat, Jun 14, 2008 at 05:25:59AM +0300, Denys Fedoryshchenko (denys@...p.net.lb) wrote:
> I am not sure it is error, but this message appearing on loaded PC routers.
> (about 100-150Mbit/s passing there, and rtorrent also running, 1G of ram)
> 
> For example:
> [1407075.519722] swapper: page allocation failure. order:3, mode:0x4020
> [1407075.519722] Pid: 0, comm: swapper Not tainted 2.6.25.4-devel2 #1
> [1407075.519722]  [<c0144c09>] __alloc_pages+0x2a9/0x2bd
> [1407075.519722]  [<c015a606>] __slab_alloc+0x14a/0x45e
> [1407075.519722]  [<c015b4c9>] __kmalloc_track_caller+0x72/0xb9
> [1407075.519722]  [<c03020ae>] __netdev_alloc_skb+0x14/0x2d
> [1407075.519722]  [<c03020ae>] __netdev_alloc_skb+0x14/0x2d
> [1407075.519722]  [<c030156c>] __alloc_skb+0x4d/0xf9
> [1407075.519722]  [<c03020ae>] __netdev_alloc_skb+0x14/0x2d
> [1407075.519722]  [<f887f395>] bnx2_poll+0x58f/0xd0c [bnx2]

It should be harmless. It means that bnx2 does not support jumbo frames
separated into multiple pages and tries to allocate single huge area.


-- 
	Evgeniy Polyakov
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