linux-kernel - Re: [PATCH v2 06/19] fbcon: Use delayed work for cursor

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Message-ID: <7f6d61f4-042f-8c9d-23ed-da6f1dcb20d0@I-love.SAKURA.ne.jp>
Date:   Thu, 10 Feb 2022 20:43:36 +0900
From:   Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:     Daniel Vetter <daniel.vetter@...ll.ch>,
        DRI Development <dri-devel@...ts.freedesktop.org>
Cc:     Intel Graphics Development <intel-gfx@...ts.freedesktop.org>,
        linux-fbdev@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        Daniel Vetter <daniel.vetter@...el.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Claudio Suarez <cssk@...-c.es>, Du Cheng <ducheng2@...il.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH v2 06/19] fbcon: Use delayed work for cursor

On 2022/02/09 6:08, Daniel Vetter wrote:
> @@ -714,6 +700,8 @@ static int con2fb_acquire_newinfo(struct vc_data *vc, struct fb_info *info,
>  		ops = kzalloc(sizeof(struct fbcon_ops), GFP_KERNEL);
>  		if (!ops)
>  			err = -ENOMEM;
> +
> +		INIT_DELAYED_WORK(&ops->cursor_work, fb_flashcursor);
>  	}
>  
>  	if (!err) {

Memory allocation fault injection will hit NULL pointer dereference.