netdev - Re: kernel panic in latest vanilla stable, while using nameif with "alive" pppoe interfaces

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Date:	Tue, 20 Oct 2009 05:42:26 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Michal Ostrowski <mostrows@...il.com>
CC:	Cyrill Gorcunov <gorcunov@...il.com>,
	Denys Fedoryschenko <denys@...p.net.lb>,
	netdev <netdev@...r.kernel.org>, linux-ppp@...r.kernel.org,
	paulus@...ba.org, mostrows@...thlink.net
Subject: Re: kernel panic in latest vanilla stable, while using nameif with
 "alive" pppoe interfaces

Michal Ostrowski a écrit :
> Access of po->pppoe_dev is guarded by sk->sk_state & PPPOX_CONNECTED,
> and all use cases now rely on the socket lock.  Because of this, the
> ref-count on the namespace held by the socket object suffices to hold
> the namespace in existence and so we don't need to ref-count the
> namespace in PPPoE. The flush_lock is gone.
> 

Seems good !

But can we use lock_sock() in __pppoe_xmit() context ?



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