linux-kernel - Re: [PATCH v2] i915: correctly handling failed allocation

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Message-ID: <87wprp8mno.fsf@intel.com>
Date:	Mon, 04 Jan 2016 16:06:03 +0200
From:	Jani Nikula <jani.nikula@...ux.intel.com>
To:	Insu Yun <wuninsu@...il.com>, daniel.vetter@...el.com,
	airlied@...ux.ie, intel-gfx@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Cc:	taesoo@...ech.edu, yeongjin.jang@...ech.edu, insu@...ech.edu,
	changwoo@...ech.edu, Insu Yun <wuninsu@...il.com>
Subject: Re: [PATCH v2] i915: correctly handling failed allocation

On Wed, 30 Dec 2015, Insu Yun <wuninsu@...il.com> wrote:
> Since devm_kzalloc can be failed, it needs to be checked
> if not, NULL dereference could be happened.
>
> Signed-off-by: Insu Yun <wuninsu@...il.com>

Pushed to drm-intel-next-queued, thanks for the patch.

BR,
Jani.

> ---
>  drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
> index a5e99ac..aa1f7bc 100644
> --- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
> +++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
> @@ -666,6 +666,8 @@ struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id)
>  
>  	/* This is cheating a bit with the cleanup. */
>  	vbt_panel = devm_kzalloc(dev->dev, sizeof(*vbt_panel), GFP_KERNEL);
> +	if (!vbt_panel)
> +		return NULL;
>  
>  	vbt_panel->intel_dsi = intel_dsi;
>  	drm_panel_init(&vbt_panel->panel);

-- 
Jani Nikula, Intel Open Source Technology Center
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