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

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Message-ID: <s5hlf2gxr0q.wl-tiwai@suse.de>
Date:   Tue, 26 Oct 2021 08:02:29 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     Chengfeng Ye <cyeaa@...nect.ust.hk>
Cc:     perex@...ex.cz, tiwai@...e.com, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: 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