On Wed, Apr 15, 2009 at 09:46:10PM +0800, Herbert Xu wrote:
>
> Does anything actually rely on this behaviour?
I doubt it :)
> If not we should just change it to not do that.
It appears that this was introduced in
commit c70f182940f988448f3c12a209d18b1edc276e33
Author: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Date: Tue Jan 20 11:07:17 2009 +0000
tun: Fix races between tun_net_close and free_netdev.
Presumably in order to fix the problem of trying to unregister
the same device twice.
I what we should do is to mark the device as dead instead of
detaching if a third party deletes it. That's all you need
to know to stop close(2) from trying the unregister a device
that's already been unregistered.
What else am I missing?
Thanks,
--
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Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
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