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

[Bharadiya,Pankaj]

On Thu, Mar 21, 2019 at 02:09:48PM +0000, Mark Brown wrote:
> 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.

Will fix it in snd_soc_dapm_free_kcontrol() and submit a new patch..

Thanks,
Pankaj