From: kristof@sigsegv.be (Kristof Provost)
To: kernelnewbies@lists.kernelnewbies.org
Subject: Should I do anything about this warning?
Date: Wed, 8 Oct 2014 11:33:57 +0200 [thread overview]
Message-ID: <20141008093357.GE2017@vega.codepro.be> (raw)
In-Reply-To: <20141008071356.GA20385@gmail.com>
On 2014-10-08 12:43:58 (+0530), Sagar Padhye <sgr.m.pdy@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
next prev parent reply other threads:[~2014-10-08 9:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-08 7:13 Should I do anything about this warning? Sagar Padhye
2014-10-08 9:33 ` Kristof Provost [this message]
2014-10-08 11:55 ` Sagar Padhye
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