linux-kernel - INFO: trying to register non-static key

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Date:	Mon, 4 Aug 2008 11:34:53 +0200
From:	"Zdenek Kabelac" <zdenek.kabelac@...il.com>
To:	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: INFO: trying to register non-static key

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
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