Re: [PATCH] netfilter: xtables: fix reentrancy

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Le jeudi 17 mars 2011 Ã 12:45 +0100, Eric Dumazet a Ãcrit :
> Le jeudi 17 mars 2011 Ã 12:36 +0100, Jesper Dangaard Brouer a Ãcrit :
> > Hi Eric,
> > 
> > How critial is this bug fix?
> > 
> > Should I apply this on my stable production kernels?
> > (I'm preparing a 2.6.38 kernel for prod usage, eventhougt its just been 
> > released, because I want your SFQ fixes...)
> 
> I would say the race is there, but probability must be very small, and
> might need malicious iptables rules (with RETURN targets)
> 
> Especially in routers, where OUTPUT path is taken from softirq handler
> anyway ;)
> 
> So dont worry at all, consider this as a cleanup :)
> 

Almost forgot to mention your kernels probably have :

CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT is not set

So you can take it easy ;)


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