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Date:	Thu, 31 Mar 2016 15:50:32 -0400 (EDT)
From:	David Miller <>
Subject: Re: [PATCH net] tun, bpf: fix suspicious RCU usage in

From: Hannes Frederic Sowa <>
Date: Thu, 31 Mar 2016 21:48:27 +0200

> Tightest solution would probably be to combine both patches.
> bool called_by_tuntap;
> old_fp = rcu_dereference_protected(sk->sk_filter, called_by_tuntap ?
> lockdep_rtnl_is_held() : lockdep_sock_is_held());

Ok, I see what you're saying.

I misunderstood how the RTNL lockdep checks work and thought we could
get false positives from other entities taking RTNL.

Can you cook up the combined patch?


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