Messages in this thread | | | Date | Fri, 28 Apr 2017 21:00:22 +0200 | From | Johan Hovold <> | Subject | Re: [PATCH] net: hso: register netdev later to avoid a race condition |
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On Fri, Apr 28, 2017 at 07:36:29PM +0200, Andreas Kemnade wrote: > On Thu, 27 Apr 2017 10:44:01 +0200 > Johan Hovold <johan@kernel.org> wrote: > > > On Wed, Apr 26, 2017 at 07:26:40PM +0200, Andreas Kemnade wrote: > > > If the netdev is accessed before the urbs are initialized, > > > there will be NULL pointer dereferences. That is avoided by > > > registering it when it is fully initialized. > > > > > Reported-by: H. Nikolaus Schaller <hns@goldelico.com> > > > Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
> > This all looks good, but you should consider cleaning up the error > > handling of this function as a follow-up as we should not be > > deregistering netdevs that have never been registered (e.g. if a > > required endpoint is missing or if registration fails for some reason). > > > > But just to be clear, this problem existed also before this change. > > > Just to check wether I am understanding this correctly. In your opinion > this patch is good for now. And later when it is applied, there should > be an additional error handling cleanup patch.
Exactly; your patch is fine as is and the error-handling issue can be fixed separately.
Thanks, Johan
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