2008-04-03 16:07:55

by Christian Lamparter

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Subject: SKB BUG: invalid truesize in AP mode

Hi,

I get lots of:

[ 4439.191058] SKB BUG: Invalid truesize (712) len=543, sizeof(sk_buff)=200
[ 4439.730154] SKB BUG: Invalid truesize (712) len=524, sizeof(sk_buff)=200
[ 4440.401994] SKB BUG: Invalid truesize (712) len=543, sizeof(sk_buff)=200

lately... (even with todays wireless-testing.git)

mostly when I'm testing the p54 ap-mode (station mode is fine)...
but, I got them on my Intel 4965n (iwlwifi in 2.6.25-rc7-git5) too.
nothing bad happend so far, other than MBs of spamming in the logs.
So, is this a known problem and more or less harmless, or not?

Regards,
Chr


2008-04-04 15:46:27

by Johannes Berg

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Subject: Re: SKB BUG: invalid truesize in AP mode

> [ 4439.730154] SKB BUG: Invalid truesize (712) len=524, sizeof(sk_buff)=200


> mostly when I'm testing the p54 ap-mode (station mode is fine)...
> but, I got them on my Intel 4965n (iwlwifi in 2.6.25-rc7-git5) too.
> nothing bad happend so far, other than MBs of spamming in the logs.
> So, is this a known problem and more or less harmless, or not?

Yes, it's a known problem, and seems to happen with TX packets whenever
you have a monitor mode (or just cooked monitor?) open. I don't know
what causes it but I'm fairly sure it's not harmless.

johannes


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