linux-kernel - Re: [PATCH 0/3] drm/vc4: use drm managed resources

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Message-ID: <dda65c68-cea4-4323-b061-8fc2048bd604@redhat.com>
Date:   Thu, 14 Jul 2022 16:27:40 +0200
From:   Danilo Krummrich <dakr@...hat.com>
To:     Maxime Ripard <maxime@...no.tech>
Cc:     airlied@...ux.ie, dri-devel@...ts.freedesktop.org, emma@...olt.net,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] drm/vc4: use drm managed resources

Hi Maxime,

On 7/13/22 11:10, Maxime Ripard wrote:
> Hi Danilo,
> 
> On Wed, Jul 13, 2022 at 10:54:57AM +0200, Danilo Krummrich wrote:
>> This patch series converts DRM modeset object allocations from devm_*()
>> to drmm_*() memory allocators, or their corresponding convenience
>> wrappers, respectively, in order to tie the release action to the
>> underlaying struct drm_device.
>>
>> This can prevent potential use-after free issues on driver unload or
>> EPROBE_DEFERRED backoff.
> 
> Yeah, the driver had a lot of this kind of issues.
> 
> As it turns out, at the moment you sent it, I was applying a larger
> series (hopefully) addressing all of them:
> https://lore.kernel.org/all/20220711173939.1132294-1-maxime@cerno.tech/
Ah, great! That's covering even more than the series I sent.
> 
> Maxime

- Danilo