* Question about buildroot vs aplay/arecord with -d
@ 2020-10-09 0:51 Kuninori Morimoto
0 siblings, 0 replies; only message in thread
From: Kuninori Morimoto @ 2020-10-09 0:51 UTC (permalink / raw)
To: Linux-ALSA
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
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