Question about buildroot vs aplay/arecord with -d

[Kuninori Morimoto]

Hi ALSA ML

I'm now using buildroot, and want to use
aplay/arecord in the same time with -d option.

This works for me

	aplay -d 3 xxx

And this works for me, too

	arecord -d 3 yyy

But, this doesn't work, and system will hung up

	aplay   -d 3 xxx &
	arecord -d 3 yyy

Sometimes it will indicates this message

	rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	rcu:     0-....: (1 GPs behind) idle=496/0/0x1 softirq=228/228 fqs=2172
	(detected by 1, t=6502 jiffies, g=-103, q=17)
	Task dump for CPU 0:
	task:swapper/0       state:R  running task     stack:    0 pid:    0 ppid:     0 flags:0x0000002a
	Call trace:
	 __switch_to+0x144/0x1a0
	 init_task+0x0/0x1780
	 ...

Do you know why this happen ?


Thank you for your help !!

Best regards
---
Kuninori Morimoto