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Date:	Fri, 17 May 2013 16:48:37 -0700
From:	Eric Dumazet <>
To:	Joe Perches <>
Cc:	David Miller <>,
	netdev <>,
	Daniel Borkmann <>
Subject: Re: [PATCH net-next] filter: do not output bpf image address for
 security reason

On Fri, 2013-05-17 at 16:42 -0700, Joe Perches wrote:

> Are stable equivalents for versions before commit 79617801ea0
> necessary?

I do not think so.

In order to get these messages printed, the admin had to specifically do

echo 2 >/proc/sys/net/core/bpf_jit_enable

And quite frankly I doubt anybody would need to do such thing, but
netdev guys writing/patching BPF JIT

And even with these messages printed, you need some bug in the kernel
allowing an exploit.

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