Re: [Xen-devel] [GIT PULL] (xen) stable/for-jens-3.14 : NFO: trying to register non-static key. the code is fine but needs lockdep annotation.

[Sander Eikelenboom]

Hi Konrad,

Today decided to tryout another kernel RC and your pull request to Jens on top of it .. and I encoutered this one:


[  438.029756] INFO: trying to register non-static key.
[  438.029759] the code is fine but needs lockdep annotation.
[  438.029760] turning off the locking correctness validator.
[  438.029770] CPU: 3 PID: 9593 Comm: blkback.2.xvda Tainted: G        W    3.14.0-rc2-20140211-pcireset-net-btrevert-xenblock+ #1
[  438.029773] Hardware name: MSI MS-7640/890FXA-GD70 (MS-7640)  , BIOS V1.8B1 09/13/2010
[  438.029784]  ffff88005224c4f0 ffff88004e5d9b68 ffffffff81b808c4 ffff88004ba2b510
[  438.029791]  0000000000000002 ffff88004e5d9c38 ffffffff81116eab ffff88004e5d9bf8
[  438.029798]  ffffffff81117b35 0000000000000000 0000000000000000 ffffffff82cee570
[  438.029799] Call Trace:
[  438.029815]  [<ffffffff81b808c4>] dump_stack+0x46/0x58
[  438.029826]  [<ffffffff81116eab>] __lock_acquire+0x1c2b/0x2220
[  438.029833]  [<ffffffff81117b35>] ? lock_acquire+0xe5/0x150
[  438.029841]  [<ffffffff81117b0d>] lock_acquire+0xbd/0x150
[  438.029847]  [<ffffffff810e5965>] ? flush_work+0x5/0x290
[  438.029852]  [<ffffffff810e599d>] flush_work+0x3d/0x290
[  438.029856]  [<ffffffff810e5965>] ? flush_work+0x5/0x290
[  438.029863]  [<ffffffff81117b35>] ? lock_acquire+0xe5/0x150
[  438.029872]  [<ffffffff816fef01>] ? xen_blkif_schedule+0x1a1/0x8d0
[  438.029881]  [<ffffffff81b8ae0d>] ? _raw_spin_unlock_irqrestore+0x6d/0x90
[  438.029888]  [<ffffffff8111392b>] ? trace_hardirqs_on_caller+0xfb/0x240
[  438.029894]  [<ffffffff81113a7d>] ? trace_hardirqs_on+0xd/0x10
[  438.029901]  [<ffffffff816fefe9>] xen_blkif_schedule+0x289/0x8d0
[  438.029907]  [<ffffffff8110d510>] ? __init_waitqueue_head+0x60/0x60
[  438.029913]  [<ffffffff81113a7d>] ? trace_hardirqs_on+0xd/0x10
[  438.029919]  [<ffffffff81b8ae21>] ? _raw_spin_unlock_irqrestore+0x81/0x90
[  438.029925]  [<ffffffff816fed60>] ? xen_blkif_be_int+0x40/0x40
[  438.029932]  [<ffffffff810ee374>] kthread+0xe4/0x100
[  438.029938]  [<ffffffff81b8afe0>] ? _raw_spin_unlock_irq+0x30/0x50
[  438.029946]  [<ffffffff810ee290>] ? __init_kthread_worker+0x70/0x70
[  438.029951]  [<ffffffff81b8c1fc>] ret_from_fork+0x7c/0xb0
[  438.029958]  [<ffffffff810ee290>] ? __init_kthread_worker+0x70/0x70

Doesn't seem to serious .. but never the less :-)

--

Sander


Monday, February 10, 2014, 8:54:02 PM, you wrote:

> On Mon, Feb 10 2014, Konrad Rzeszutek Wilk wrote:
>> Hey Jens,
>> 
>> Please git pull the following branch:
>> 
>>  git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip.git stable/for-jens-3.14
>> 
>> which is based off v3.13-rc6. If you would like me to rebase it on
>> a different branch/tag I would be more than happy to do so.

> Older is fine, it's only an issue if you are ahead of the branch you
> want to go into.

dd>> 
>> The patches are all bug-fixes and hopefully can go in 3.14.
>> 
>> They deal with xen-blkback shutdown and cause memory leaks
>> as well as shutdown races. They should go to stable tree and if you
>> are OK with I will ask them to backport those fixes.
>> 
>> There is also a fix to xen-blkfront to deal with unexpected state
>> transition. And lastly a fix to the header where it was using the
>> __aligned__ unnecessarily.

> Pulled!


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