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Date: Tue, 12 Jun 2018 09:22:36 -0400 From: Alexander Aring <aring@...atatu.com> To: Michael Richardson <mcr+ietf@...delman.ca> Cc: netdev@...r.kernel.org, linux-wpan@...r.kernel.org, linux-bluetooth@...r.kernel.org Subject: Re: netdevice notifier and device private data Hi, On Sun, Jun 10, 2018 at 10:09:39PM -0400, Michael Richardson wrote: > > Alexander Aring <aring@...atatu.com> wrote: > >> It totally seems like broken behaviour. Maybe it's not even > >> intentional. Maybe they are just foobar. > > > They simple don't know what they doing... somebody thought 6LoWPAN need > > to be 6LoWPAN, but they actually don't use the 6LoWPAN handling inside > > the kernel. _Except_ they doing out of tree stuff which I don't > > believe. > > So, it seems like this ioctl() should be disabled, or restricted to cases > that actually work. hate to break their code, but if it's broken anyway, at > least the kernel won't crash under them. > before we breaking their software I will gentle ask before why they doing that and I get a good reason then. Then we look more how we deal with an illegal read/dereference in dev->priv. I will figure out how I can do that over github. - Alex
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