From: Luis Chamberlain <mcgrof@kernel.org>
To: Petr Mladek <pmladek@suse.com>
Cc: Aaron Tomlin <atomlin@redhat.com>,
Christoph Lameter <cl@linux.com>, Miroslav Benes <mbenes@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
jeyu@kernel.org, linux-kernel@vger.kernel.org,
linux-modules@vger.kernel.org, atomlin@atomlin.com
Subject: Re: [RFC PATCH] module: Introduce module unload taint tracking
Date: Fri, 10 Dec 2021 09:03:32 -0800 [thread overview]
Message-ID: <YbOIZOsiOarBtLxF@bombadil.infradead.org> (raw)
In-Reply-To: <YbMlVFwBiRujKdEX@alley>
On Fri, Dec 10, 2021 at 11:00:52AM +0100, Petr Mladek wrote:
> Please, do not remove records that a module was removed. IMHO, it
> might be useful to track all removed module, including the non-tainted
> ones.
Then we'd need two features. One modules removed, and another which
limits this to only tainted modules. On kernel-ci systems where I
try to reproduce issues with fstests or blktests I might be unloading
a module 10,000 times, and so for those systems I'd like to disable
the tracking of all modules removed, otherwise we'd end up with
-ENOMEM eventually.
> Module removal is always tricky and not much tested.
It is tricky but I have been trying to correct issues along that path
and given that fstests and blktests uses it heavily I want to start
dispelling the false narrative that this is not a common use case.
> The tain flags might be just shown as extra information in the output.
Yes!
Luis
next prev parent reply other threads:[~2021-12-10 17:03 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-24 17:33 [RFC PATCH] module: Introduce module unload taint tracking Aaron Tomlin
2021-12-08 20:47 ` Luis Chamberlain
2021-12-09 16:49 ` Aaron Tomlin
2021-12-09 23:42 ` Luis Chamberlain
2021-12-10 10:00 ` Petr Mladek
2021-12-10 16:09 ` Aaron Tomlin
2021-12-10 17:09 ` Luis Chamberlain
2021-12-13 15:16 ` Petr Mladek
2021-12-21 11:58 ` Aaron Tomlin
2021-12-10 17:03 ` Luis Chamberlain [this message]
2021-12-10 15:48 ` Aaron Tomlin
2021-12-28 21:30 ` [RFC PATCH 00/12] module: core code clean up Aaron Tomlin
2021-12-28 21:30 ` [RFC PATCH 01/12] module: Move all into module/ Aaron Tomlin
2021-12-28 21:30 ` [RFC PATCH 02/12] module: Simple refactor in preparation for split Aaron Tomlin
2021-12-28 21:30 ` [RFC PATCH 03/12] module: Move livepatch support to a separate file Aaron Tomlin
2021-12-28 21:30 ` [RFC PATCH 04/12] module: Move latched RB-tree " Aaron Tomlin
2021-12-28 21:30 ` [RFC PATCH 05/12] module: Move arch strict rwx " Aaron Tomlin
2022-01-12 16:13 ` Luis Chamberlain
2021-12-28 21:30 ` [RFC PATCH 06/12] module: Move " Aaron Tomlin
2021-12-28 21:30 ` [RFC PATCH 07/12] module: Move extra signature support out of core code Aaron Tomlin
2021-12-28 21:30 ` [RFC PATCH 08/12] module: Move kmemleak support to a separate file Aaron Tomlin
2021-12-28 21:30 ` [RFC PATCH 09/12] module: Move kallsyms support into " Aaron Tomlin
2021-12-28 21:30 ` [RFC PATCH 10/12] module: Move procfs " Aaron Tomlin
2021-12-28 21:30 ` [RFC PATCH 11/12] module: Move sysfs " Aaron Tomlin
2022-01-12 16:20 ` Luis Chamberlain
2021-12-28 21:30 ` [RFC PATCH 12/12] module: Move kdb_modules list out of core code Aaron Tomlin
2021-12-29 8:58 ` [RFC PATCH 00/12] module: core code clean up Aaron Tomlin
2022-01-12 16:21 ` Luis Chamberlain
2021-12-13 13:00 ` [RFC PATCH] module: Introduce module unload taint tracking Allen
2021-12-20 19:23 ` Luis Chamberlain
2021-12-21 11:44 ` Aaron Tomlin
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