On Thu, Aug 03, 2006 at 08:22:58AM -0700, Arjan van de Ven wrote: > > however I'm not quite yet convinced that this patch is going to solve > this particular deadlock. > (I agree with the principle of it and I think it's really needed, > I just don't yet see how it's going to solve this specific deadlock. But > then again it's early and I've not had sufficient coffee yet so I could > well be wrong)
Well it solves the dead lock by breaking the chain that links the netlink system with the jungle of wireless locking :) The spin lock in sk_buff_head acts as a mediator. We only feed the skb to the netlink system once that spin lock has been dropped. > it's not just about irq context, it's about being called with any lock > that's > used in IRQ context; that is what makes this double nasty... Yes it is nasty. However, so far wireless seems to be the only offender. Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <[EMAIL PROTECTED]> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
