Re: next-20130325 - INFO: trying to register non-static key.

[Tejun Heo]

Hello, Valdis.

On Tue, Mar 26, 2013 at 02:06:03PM -0400, Valdis Kletnieks wrote:
> Seen in the dmesg for next-20130325, but looks like it's been doing
> it since at least next-20130218.
> 
> [   50.162584] dell_wmi: Received unknown WMI event (0x11)
> [   51.167629] INFO: trying to register non-static key.
> [   51.167636] the code is fine but needs lockdep annotation.
> [   51.167639] turning off the locking correctness validator.
> [   51.167644] Pid: 594, comm: kworker/0:3 Tainted: G        W  O 3.9.0-rc4-next-20130325 #67
> [   51.167646] Call Trace:
> [   51.167656]  [<ffffffff81073847>] register_lock_class+0x108/0x2ba
> [   51.167662]  [<ffffffff81075113>] __lock_acquire+0x126/0xde2
> [   51.167667]  [<ffffffff810755de>] ? __lock_acquire+0x5f1/0xde2
> [   51.167671]  [<ffffffff81076111>] lock_acquire+0xc7/0x14a
> [   51.167677]  [<ffffffff810498dd>] ? process_one_work+0x1fd/0x4ae
> [   51.167681]  [<ffffffff81049949>] process_one_work+0x269/0x4ae
> [   51.167686]  [<ffffffff810498dd>] ? process_one_work+0x1fd/0x4ae
> [   51.167691]  [<ffffffff8104ae2c>] worker_thread+0x2d6/0x3dc
> [   51.167696]  [<ffffffff8104ab56>] ? rescuer_thread+0x343/0x343
> [   51.167701]  [<ffffffff81050394>] kthread+0x9d/0xa5
> [   51.167706]  [<ffffffff810502f7>] ? __kthread_parkme+0x60/0x60
> [   51.167712]  [<ffffffff815fdf6c>] ret_from_fork+0x7c/0xb0
> [   51.167717]  [<ffffffff810502f7>] ? __kthread_parkme+0x60/0x60
> 
> 'git blame' doesn't seem to shout anything.  Commit 112202d90 touched code
> in that area semi-recently, but I don't actually see a problem with it.
> 
> (I admit not being sure how long this has been an issue - discovered I
> had a local config screw-up that meant lockdep wasn't on for quite some
> time).

It's likely caused by the workqueue user not initializing the work
item properly; unfortunately, I can't tell who the offending user is
from the trace.  Can you please reproduce the problem on the following
git branch and report the output?

 git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git review-unify-dump

Thanks!

-- 
tejun
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/