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Re: "Kernel bug detected" when using pktgen together with mac80211_hwsim

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On Thu, 2010-12-02 at 18:09 +0100, Helmut Schaa wrote:
> Am Donnerstag 02 Dezember 2010 schrieb Johannes Berg:
> > On Thu, 2010-12-02 at 17:31 +0100, Helmut Schaa wrote:
> > 
> > > Unfortunately pktgen keeps a reference to the skb and thus pskb_expand_head
> > > triggers a BUG when called from mac80211. I worked around that issue by adding
> > > a skb_copy for shared skbs.
> > > 
> > > Maybe, someone else has a better idea on how to fix that?
> > 
> > Oops! That seems like the right way to fix it though.
> 
> Ok, thanks, I'll send a patch then. I guess we cannot use pskb_copy due to
> (for example) our own fragmenation list usage, right?

Not sure, we can't cope with non-linear SKBs right now...

johannes

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