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Date: Wed, 14 Nov 2007 21:37:17 +0800 From: Herbert Xu <herbert@...dor.apana.org.au> To: Pavel Emelyanov <xemul@...nvz.org> Cc: David Miller <davem@...emloft.net>, Linux Netdev List <netdev@...r.kernel.org>, devel@...nvz.org Subject: Re: [PATCH] Remove notifier block from chain when register_netdevice_notifier fails On Wed, Nov 14, 2007 at 03:08:03PM +0300, Pavel Emelyanov wrote: > Commit fcc5a03ac42564e9e255c1134dda47442289e466 makes the > register_netdevice_notifier() handle the error from the > NETDEV_REGISTER event, sent to the registering block. > > The bad news is that in this case the notifier block is > not removed from the list, but the error is returned to the > caller. In case the caller is in module init function and > handles this error this can abort the module loading. The > notifier block will be then removed from the kernel, but > will be left in the list. Oops :( > > I think that the notifier block should be removed from the > chain in case of error, regardless whether this error is > handled by the caller or not. In the worst case (the error > is _not_ handled) module will not receive the events any > longer. > > Signed-off-by: Pavel Emelyanov <xemul@...nvz.org> Good catch. Thanks Pavel! Acked-by: Herbert Xu <herbert@...dor.apana.org.au> -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au> 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 majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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