rcu_preempt detected stalls on CPUs/tasks

[saurabh206]

Hi

I am facing system hang issue.

BSP is Yocto with 3.10.17-1.0.0_GA.

[  939.391052] INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 0, t=2102 jiffies, g=35792, c=35791, q=105)

[  939.402018] INFO: Stall ended before state dump start

How to fix rcu_preempt?

Thanks

Saurabh

[saurabh206]

Hi,

Any valuable comment from experts?

Thanks

Saurabh

[paul_lee]

Hello

Did you able to fix this issue. we are facing same issue.

[saurabh206]

Hi,

I have disabled the Frequency scaling and this issue is not reproduce.

Thanks

Saurabh

[igorpadykov]

Hi Saurabh

are you using wireless network ?

~igor

[saurabh206]

Hi,

igor

Thanks for quick replay.

We are not using any wireless network.

My test is doing short track audio playback in loop.

Thanks

Saurabh

[igorpadykov]

One can try solutions below (seems that me related to GPU)

Re: freescale android kernel have scheduling problem !!!

and apply latest GPU fixes

L3.10.17_1.0.2_iMX6QDLS_BUNDLE :

~igor