linux-kernel - 回复: [PATCH] sound/isa/gus: fix null pointer dereference on pointer block

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Date:   Tue, 26 Oct 2021 12:51:18 +0000
From:   YE Chengfeng <cyeaa@...nect.ust.hk>
To:     Takashi Iwai <tiwai@...e.de>
CC:     "perex@...ex.cz" <perex@...ex.cz>,
        "tiwai@...e.com" <tiwai@...e.com>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: 回复: [PATCH] sound/isa/gus: fix null pointer dereference on pointer block

Thanks so much,
-Chengfeng

-----邮件原件-----
发件人: Takashi Iwai <tiwai@...e.de> 
发送时间: 2021年10月26日 14:02
收件人: YE Chengfeng <cyeaa@...nect.ust.hk>
抄送: perex@...ex.cz; tiwai@...e.com; alsa-devel@...a-project.org; linux-kernel@...r.kernel.org
主题: Re: [PATCH] sound/isa/gus: fix null pointer dereference on pointer block

On Sun, 24 Oct 2021 12:46:11 +0200,
Chengfeng Ye wrote:
> 
> The pointer block return from snd_gf1_dma_next_block could be null, so 
> there is a potential null pointer dereference issue.
> Fix this by adding a null check before dereference.
> 
> Signed-off-by: Chengfeng Ye <cyeaa@...nect.ust.hk>

Thanks, applied.


Takashi