[PATCH v2] ALSA: pcm: disallow linking stream to itself

[Takashi Iwai]

On Mon, 08 Jun 2020 18:50:39 +0200,
Michał Mirosław wrote:
> 
> Prevent SNDRV_PCM_IOCTL_LINK linking stream to itself - the code
> can't handle it. Fixed commit is not where bug was introduced, but
> changes the context significantly.
> 
> Cc: stable at vger.kernel.org
> Fixes: 0888c321de70 ("pcm_native: switch to fdget()/fdput()")
> Signed-off-by: Michał Mirosław <mirq-linux at rere.qmqm.pl>
> ---
> v2: EDEADLK -> EINVAL

Applied now.  Thanks!


Takashi