netdev - Invalid truesize messages since 2.6.25

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Message-ID: <3C59DB883F7B0B4D8096010D45ACCD13C73CAE@exch.facton.local>
Date:	Fri, 26 Sep 2008 19:53:45 +0200
From:	"Beschorner Daniel" <Daniel.Beschorner@...ton.com>
To:	<netdev@...r.kernel.org>
Subject: Invalid truesize messages since 2.6.25

I did some more investigations and can reproduce it now in a simple way:

I take my tg3 device into promiscuous mode and capture ESP packets:
Just "tcpdump -i eth1 esp" and ping 4 times through the IPSEC tunnel to
generate ESP traffic, after that dmesg shows

device eth1 entered promiscuous mode
SKB BUG: Invalid truesize (336) len=134, sizeof(sk_buff)=208
SKB BUG: Invalid truesize (336) len=134, sizeof(sk_buff)=208
SKB BUG: Invalid truesize (336) len=134, sizeof(sk_buff)=208
SKB BUG: Invalid truesize (336) len=134, sizeof(sk_buff)=208
device eth1 left promiscuous mode

Daniel

----------
Since 2.6.25 we rarely see these messages:

SKB BUG: Invalid truesize (408) len=198, sizeof(sk_buff)=216

Yesterday I saw it the first time after a runtime of one week with
2.6.26.
The box is web server / IPSEC gateway.
Obviously nothing seems to be affected by the message but <= 2.6.24 no
messages appeared.

Daniel
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