linux-kernel - Re: [PATCH] drm/rockchip: psr: do not dereference encoder before it is null checked.

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Message-ID: <6610441.t0YFBFda2e@phil>
Date:   Tue, 16 Oct 2018 15:00:20 +0200
From:   Heiko Stuebner <heiko@...ech.de>
To:     Enric Balletbo i Serra <enric.balletbo@...labora.com>
Cc:     David Airlie <airlied@...ux.ie>, kernel@...labora.com,
        linux-kernel@...r.kernel.org, Sandy Huang <hjc@...k-chips.com>,
        dri-devel@...ts.freedesktop.org,
        linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] drm/rockchip: psr: do not dereference encoder before it is null checked.

Am Samstag, 13. Oktober 2018, 12:56:54 CEST schrieb Enric Balletbo i Serra:
> 'encoder' is deferenced before it is null sanity checked, hence we
> potentially have a null pointer dereference bug. Instead, initialise
> drm_drv from encoder->dev->dev_private after we are sure 'encoder' is
> not null.
> 
> Fixes: 5182c1a556d7f ("drm/rockchip: add an common abstracted PSR driver")
> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>

added a stable-tag and applied to drm-misc-next

Thanks
Heiko