Subject: Re: sending ARP triggers BUG
From: Johannes Berg <johannes@sipsolutions.net>
To: "Chatre, Reinette" <reinette.chatre@intel.com>
Cc: linux-wireless@vger.kernel.org
In-Reply-To: <D936D925018D154694D8A362EEB0892003ABCBD2@orsmsx416.amr.corp.intel.com>
References: <D936D925018D154694D8A362EEB0892003ABCBD2@orsmsx416.amr.corp.intel.com>
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Date: Wed, 20 Feb 2008 01:56:08 +0100
Message-Id: <1203468968.10983.13.camel@johannes.berg> (sfid-20080220_182849_400764_D720615C)
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Sender: linux-wireless-owner@vger.kernel.org


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> I recently started seeing the BUG below. ieee80211_subif_start_xmit
> calls pskb_expand_head, but this function BUGs because the skb is
> shared. So far I have only seen this with arp messages ... I don't know
> the significance of this fact.

Interestingly, I'm starting to see skb problems as well, in AP mode only
however, namely I get lots of

[ 4340.665679] SKB BUG: Invalid truesize (240) len=3D73, sizeof(sk_buff)=3D=
176

Anybody have an idea how to debug that? It looks like 'len' is one too
large, but I've also seen messages where it was two too large or one to
small.

johannes

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