ALSA: timer - Add NULL-check for invalid slave timer (94094c8a) · Commits · e / devices / android_kernel_oneplus_sm7250

sound/core/timer.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -328,6 +328,8 @@ int snd_timer_close(struct snd_timer_instance *timeri)
		mutex_unlock(&register_mutex);
		} else {
		timer = timeri->timer;
		if (snd_BUG_ON(!timer))
		goto out;
		/* wait, until the active callback is finished */
		spin_lock_irq(&timer->lock);
		while (timeri->flags & SNDRV_TIMER_IFLG_CALLBACK) {
		@@ -353,6 +355,7 @@ int snd_timer_close(struct snd_timer_instance *timeri)
		}
		mutex_unlock(&register_mutex);
		}
		out:
		if (timeri->private_free)
		timeri->private_free(timeri);
		kfree(timeri->owner);