linux-kernel - Re: [PATCH net-next v7 0/2] bpf: add bpf_probe_write

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20160725.180805.1078640844978833041.davem@davemloft.net>
Date:	Mon, 25 Jul 2016 18:08:05 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	sargun@...gun.me
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	alexei.starovoitov@...il.com, daniel@...earbox.net
Subject: Re: [PATCH net-next v7 0/2] bpf: add bpf_probe_write_user helper &
 example

From: Sargun Dhillon <sargun@...gun.me>
Date: Mon, 25 Jul 2016 05:54:29 -0700

> This patch series contains two patches that add support for a probe_write
> helper to BPF programs. This allows them to manipulate user memory during
> the course of tracing. The second patch in the series has an example that
> uses it, in one the intended ways to divert execution.
> 
> Thanks to Alexei Starovoitov, and Daniel Borkmann for being patient, review, and 
> helping me get familiar with the code base. I've made changes based on their 
> recommendations.
> 
> This helper should be considered for experimental usage and debugging, so we
> print a warning to dmesg when it is along with the command and pid when someone
> tries to install a proglet that uses it. A follow-up patchset will contain a
> mechanism to verify the safety of the probe beyond what was done by hand.

Series applied, thanks.