INFO: trying to register non-static key

INFO: trying to register non-static key

[Zdenek Kabelac]

Hi

After update to current git vanilla head
90bc1a658a53f8832ee799685703977a450e5af9
(building x86_64 kernel)  I've got attached INFO message.

Probably a result of some commit between 31-rc5-00000  & 31-rc5-00246

PCI: Using ACPI for IRQ routing
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
Pid: 1, comm: swapper Not tainted 2.6.31-rc5-00248-g804067f #80
Call Trace:
 [<ffffffff810775a2>] register_lock_class+0x202/0x440
 [<ffffffff8137eb90>] ? _write_unlock_irqrestore+0x40/0x70
 [<ffffffff8107a86d>] ? trace_hardirqs_on_caller+0x15d/0x1a0
 [<ffffffff8107a8bd>] ? trace_hardirqs_on+0xd/0x10
 [<ffffffff8107b353>] __lock_acquire+0x83/0x1090
 [<ffffffff810fd015>] ? kmem_cache_alloc_notrace+0xe5/0x140
 [<ffffffff8107c3f8>] lock_acquire+0x98/0x140
 [<ffffffff812f9c99>] ? alloc_netdev_mq+0x139/0x220
 [<ffffffff8137f04b>] _spin_lock_bh+0x3b/0x70
 [<ffffffff812f9c99>] ? alloc_netdev_mq+0x139/0x220
 [<ffffffff812f9c99>] alloc_netdev_mq+0x139/0x220
 [<ffffffff812b71c0>] ? loopback_setup+0x0/0x80
 [<ffffffff815b25b0>] loopback_net_init+0x28/0x78
 [<ffffffff812f200d>] register_pernet_operations+0x1d/0x20
 [<ffffffff812f20c6>] register_pernet_device+0x36/0x80
 [<ffffffff815b733c>] net_dev_init+0x154/0x1b1
 [<ffffffff815b71e8>] ? net_dev_init+0x0/0x1b1
 [<ffffffff8100904f>] do_one_initcall+0x3f/0x1b0
 [<ffffffff811d600e>] ? ida_get_new_above+0x13e/0x200
 [<ffffffff8107a577>] ? mark_held_locks+0x67/0x90
 [<ffffffff8107a8bd>] ? trace_hardirqs_on+0xd/0x10
 [<ffffffff81079fa5>] ? lock_release_holdtime+0x35/0x1b0
 [<ffffffff8137ee0b>] ? _spin_unlock+0x2b/0x40
 [<ffffffff81159797>] ? proc_register+0x127/0x210
 [<ffffffff81159e7e>] ? create_proc_entry+0x5e/0xb0
 [<ffffffff810a25c4>] ? register_irq_proc+0xc4/0xe0
 [<ffffffff8158e4e8>] kernel_init+0x152/0x1a8
 [<ffffffff8100d1da>] child_rip+0xa/0x20
 [<ffffffff8100cb7c>] ? restore_args+0x0/0x30
 [<ffffffff8158e396>] ? kernel_init+0x0/0x1a8
 [<ffffffff8100d1d0>] ? child_rip+0x0/0x20
hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
hpet0: 3 comparators, 64-bit 14.318180 MHz counter
Switched to high resolution mode on CPU 0
Switched to high resolution mode on CPU 1

Zdenek

INFO: trying to register non-static key.

[Christian Kujau]

Hi,

after upgrading from 3.8.0-rc7 to 3.9.0-rc1, the following message appears 
after booting and after dm-crypt (LUKS) partitions are mounted and 
exported via NFS:

-------------------------------
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
Call Trace:
[eecc3bd0] [c0008e98] show_stack+0x48/0x15c (unreliable)
[eecc3c10] [c0071464] __lock_acquire+0x1734/0x18f4
[eecc3cb0] [c0071a88] lock_acquire+0x50/0x6c
[eecc3cd0] [c004aee8] flush_work+0x3c/0x26c
[eecc3d40] [c004d318] __cancel_work_timer+0x98/0xf0
[eecc3d70] [c04ecebc] xs_destroy+0x1c/0x78
[eecc3d90] [c04ea2e4] xprt_destroy+0x60/0x74
[eecc3da0] [c04e95d8] rpc_free_client+0x138/0x158
[eecc3dc0] [c04e96b8] rpc_shutdown_client+0xc0/0xd4
[eecc3e10] [c04f9834] rpcb_put_local+0x118/0x148
[eecc3e30] [c04f39f0] svc_rpcb_cleanup+0x20/0x34
[eecc3e40] [c017bfcc] nfsd_last_thread+0xf0/0x108
[eecc3e60] [c04f3608] svc_shutdown_net+0x38/0x4c
[eecc3e70] [c017c788] nfsd_destroy+0xe8/0x10c
[eecc3e90] [c017c8a4] nfsd+0xf8/0x11c
[eecc3eb0] [c0052298] kthread+0xa8/0xac
[eecc3f40] [c00107d0] ret_from_kernel_thread+0x64/0x6c
-------------------------------

This has been reported in January[0] and a bad commit has been singled 
out:

  > commit ec8acf20afb8534ed511f6613dd2226b9e301010
  > Author: Shaohua Li <shli@kernel.org>
  > Date:   Fri Feb 22 16:34:38 2013 -0800
  > 
  > swap: add per-partition lock for swapfile  

However, git-revert'ing this commit did not help in my case (powerpc32, 
uni processor). Please find full dmesg & .config here:

  http://nerdbynature.de/bits/3.9.0-rc1/

Thanks,
Christian.

[0] http://www.spinics.net/lists/linux-mm/msg50068.html
-- 
BOFH excuse #63:

not properly grounded, please bury computer

INFO: trying to register non-static key

[Zdenek Kabelac]

Hello

Happened during reinsert of the loop module

[ 7145.533707] INFO: trying to register non-static key.
[ 7145.533713] the code is fine but needs lockdep annotation.
[ 7145.533719] turning off the locking correctness validator.
[ 7145.533728] Pid: 20864, comm: rmmod Not tainted 2.6.27-rc1 #56
[ 7145.533733]
[ 7145.533735] Call Trace:
[ 7145.533751]  [<ffffffff81065d80>] ? static_obj+0x80/0x90
[ 7145.533761]  [<ffffffff8106913f>] __lock_acquire+0x12af/0x13b0
[ 7145.533770]  [<ffffffff8106646d>] ? trace_hardirqs_off+0xd/0x10
[ 7145.533783]  [<ffffffff810135c0>] ? native_sched_clock+0x90/0xb0
[ 7145.533794]  [<ffffffff81053172>] ? __cancel_work_timer+0x72/0x230
[ 7145.533803]  [<ffffffff810692d6>] lock_acquire+0x96/0xe0
[ 7145.533812]  [<ffffffff81053172>] ? __cancel_work_timer+0x72/0x230
[ 7145.533824]  [<ffffffff810531a2>] __cancel_work_timer+0xa2/0x230
[ 7145.533832]  [<ffffffff8104af2a>] ? try_to_del_timer_sync+0x5a/0x70
[ 7145.533844]  [<ffffffff81319ab0>] ? sub_preempt_count+0x80/0x120
[ 7145.533857]  [<ffffffff81315dc5>] ? _spin_unlock_irqrestore+0x45/0x90
[ 7145.533866]  [<ffffffff8104af2a>] ? try_to_del_timer_sync+0x5a/0x70
[ 7145.533875]  [<ffffffff810658d4>] ? lock_release_holdtime+0x74/0xd0
[ 7145.533885]  [<ffffffff8105334b>] cancel_work_sync+0xb/0x10
[ 7145.533897]  [<ffffffff8117e1d7>] blk_sync_queue+0x27/0x30
[ 7145.533906]  [<ffffffff8117ffd3>] blk_release_queue+0x23/0x70
[ 7145.533917]  [<ffffffff8118e792>] kobject_release+0x52/0xb0
[ 7145.533926]  [<ffffffff8118e740>] ? kobject_release+0x0/0xb0
[ 7145.533935]  [<ffffffff8118f807>] kref_put+0x37/0x70
[ 7145.533943]  [<ffffffff8118e647>] kobject_put+0x27/0x60
[ 7145.533951]  [<ffffffff8117e19b>] blk_cleanup_queue+0x5b/0x70
[ 7145.533964]  [<ffffffffa03cd0b8>] loop_free+0x18/0x60 [loop]
[ 7145.533976]  [<ffffffffa03cf90a>] loop_exit+0x6e/0xb6 [loop]
[ 7145.533988]  [<ffffffff810742ff>] sys_delete_module+0x1cf/0x2d0
[ 7145.533999]  [<ffffffff81315726>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[ 7145.534009]  [<ffffffff8106776b>] ? trace_hardirqs_on_caller+0x14b/0x1b0
[ 7145.534023]  [<ffffffff8100c5bb>] system_call_fastpath+0x16/0x1b

Zdenek