linux-kernel - Re: [RFC 00/12] module: avoid userspace pressure on unwanted allocations

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Message-ID: <c1375bdc-401b-308a-d931-80a95897dbc3@redhat.com>
Date:   Mon, 20 Mar 2023 10:38:13 +0100
From:   David Hildenbrand <david@...hat.com>
To:     Luis Chamberlain <mcgrof@...nel.org>
Cc:     linux-modules@...r.kernel.org, linux-kernel@...r.kernel.org,
        pmladek@...e.com, petr.pavlu@...e.com, prarit@...hat.com,
        christophe.leroy@...roup.eu, song@...nel.org,
        torvalds@...ux-foundation.org
Subject: Re: [RFC 00/12] module: avoid userspace pressure on unwanted
 allocations

On 18.03.23 01:11, Luis Chamberlain wrote:
> On Thu, Mar 16, 2023 at 04:56:56PM -0700, Luis Chamberlain wrote:
>> On Thu, Mar 16, 2023 at 04:55:31PM -0700, Luis Chamberlain wrote:
>>> On Wed, Mar 15, 2023 at 05:41:53PM +0100, David Hildenbrand wrote:
>>>> I expect to have a machine (with a crazy number of CPUs/devices) available
>>>> in a couple of days (1-2), so no need to rush.
>>>>
>>>> The original machine I was able to reproduce with is blocked for a little
>>>> bit longer; so I hope the alternative I looked up will similarly trigger the
>>>> issue easily.
>>>
>>> OK give this a spin:
>>>
>>> https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git/log/?h=20230316-module-alloc-opts
> 
> Today I am up to here:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git/log/?h=20230317-module-alloc-opts
> 
> The last patch really would have no justification yet at all unless it
> does help your case.

Still waiting on the system (the replacement system I was able to grab 
broke ...).

I'll let you know once I succeeded in reproducing + testing your fixes.

-- 
Thanks,

David / dhildenb