linux-kernel - Re: [PATCH net-next v7 1/2] bpf: Add bpf_probe_write

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Message-ID: <57961147.3090101@iogearbox.net>
Date:	Mon, 25 Jul 2016 15:16:55 +0200
From:	Daniel Borkmann <daniel@...earbox.net>
To:	Sargun Dhillon <sargun@...gun.me>, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
CC:	alexei.starovoitov@...il.com
Subject: Re: [PATCH net-next v7 1/2] bpf: Add bpf_probe_write_user BPF helper
 to be called in tracers

On 07/25/2016 02:54 PM, Sargun Dhillon wrote:
> This allows user memory to be written to during the course of a kprobe.
> It shouldn't be used to implement any kind of security mechanism
> because of TOC-TOU attacks, but rather to debug, divert, and
> manipulate execution of semi-cooperative processes.
>
[...]

v7 looks good to me now as well, thanks a bunch Sargun!