Re: [alsa-devel] [PATCH] ASoC: dapm: Fix NULL pointer dereference in snd_soc_dapm_new_dai

[Mark Brown]

On Thu, Mar 21, 2019 at 08:59:55AM -0500, Pierre-Louis Bossart wrote:
> On 3/21/19 7:31 AM, Mark Brown wrote:
> > On Thu, Mar 21, 2019 at 03:41:25PM +0530, Pankaj Bharadiya wrote:

> > This is very non-obvious - it's not at all clear why we'd need the text
> > to free controls.  If there is an issue here it seems like it'd be
> > better to make sure that snd_soc_dapm_free_kcontrol() can cope with that
> > being NULL, that will be clearer and also avoid potential issues with
> > other callers.

> I believe the issue is real, but you need to look at the entire code to figure it out

Yeah, I'm fairly sure there's an actual issue here - it's just that the
fix is obscure and feels fragile.

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