linux-kernel - Re: [RFC PATCH] module: Introduce module unload taint tracking

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

Date:   Tue, 21 Dec 2021 11:58:28 +0000
From:   Aaron Tomlin <atomlin@...hat.com>
To:     Petr Mladek <pmladek@...e.com>
Cc:     Luis Chamberlain <mcgrof@...nel.org>,
        Christoph Lameter <cl@...ux.com>,
        Miroslav Benes <mbenes@...e.cz>,
        Andrew Morton <akpm@...ux-foundation.org>, jeyu@...nel.org,
        linux-kernel@...r.kernel.org, linux-modules@...r.kernel.org,
        atomlin@...mlin.com, ghalat@...hat.com
Subject: Re: [RFC PATCH] module: Introduce module unload taint tracking

On Mon 2021-12-13 16:16 +0100, Petr Mladek wrote:
> > I'm not so sure about this. We could gather such details already via Ftrace
> > (e.g. see load_module()). Personally, I'd prefer to maintain a simple list.
> 
> Fair enough. It was just an idea. Simple list is a good start. We
> could always add more details if people find it useful.

Indeed we could.

> Also we should keep in mind that the default panic() message should
> be reasonably short. Only the last lines might be visible on screen.
> Serial consoles might be really slow.

Absolutely, I agree. This feature should be entirely optional. In fact, it
is likely only useful while reviewing the data via /proc/vmcore given the
potential amount of data generated, in addition to that seen in
panic_print_sys_info(), when explicitly enabled.


Kind regards,

-- 
Aaron Tomlin