Re: [PATCH v2] ALSA: jack: Access input_dev under mutex

On Tue, 12 Apr 2022 11:16:28 +0200, Amadeusz Sławiński wrote:

It is possible when using ASoC that input_dev is unregistered while calling snd_jack_report, which causes NULL pointer dereference. In order to prevent this serialize access to input_dev using mutex lock.

Signed-off-by: Amadeusz Sławiński amadeuszx.slawinski@linux.intel.com

Changes: v2:

• drop mutex in snd_jack_new
• add comment that snd_jack_report() should be called in context where it can sleep

Thanks, applied now.

Takashi