Messages in this thread | | | Date | Fri, 11 Jan 2013 15:42:36 +0100 | From | Stefan Hajnoczi <> | Subject | Re: [PATCH 1/2] tuntap: forbid calling TUNSETIFF when detached |
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On Fri, Jan 11, 2013 at 04:50:41PM +0800, Jason Wang wrote: > @@ -1546,6 +1544,9 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr) > struct net_device *dev; > int err; > > + if (rcu_dereference_protected(tfile->detached, lockdep_rtnl_is_held())) > + return -EINVAL; > +
How come none of the other tfile->detached users call rcu_*()?
Stefan
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