Should I do anything about this warning?

[Kristof Provost]

On 2014-10-08 12:43:58 (+0530), Sagar Padhye <sgr.m.pdy at gmail.com> wrote:
> I am new at kernel programming. I have written a driver for a custom
> device, running on arm board. It works well (for last few months).  I
> happen to look at kernel logs and I seen,
> 
> [231250.899146] WARNING: at kernel/workqueue.c:1953 process_one_work+0x398/0x52c()
> 
You triggered a warning in the code.

> The device is still working after this. No issues in operation. I am
> just sceptical about analyzing this issue? Do I need to check more? If
> yes how? with this trace?
> 
Yes, this indicates a potential problem.
You start my looking at line 1953 in kernel/workqueue.c, where you'll
see which specific warning you're triggering.

It's probably this one:
>   /* ensure we're on the correct CPU */
>    WARN_ON_ONCE(!(pool->flags & POOL_DISASSOCIATED) &&
>             raw_smp_processor_id() != pool->cpu);

Regards,
Kristof