linux-kernel - Re: oprofile? lockdep warning from 2.6.27-rc1-mm1

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Date:	Tue, 05 Aug 2008 20:29:06 +0900
From:	hooanon05@...oo.co.jp
To:	Robert Richter <robert.richter@....com>
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org
Subject: Re: oprofile? lockdep warning from 2.6.27-rc1-mm1 


Robert Richter:
> this is new to me. I will take a look at this.

Thanks.
Here is another message at shutdown time.


Junjiro R. Okajima

----------------------------------------------------------------------
BUG: sleeping function called from invalid context at /home/jro/transparent/linux-2.6.27-rc1-mm1/kernel/sched.c:4613
in_atomic():1, irqs_disabled():0
1 lock held by oprofiled/1843:
 #0:  (start_mutex){--..}, at: [<c02d5c77>] oprofile_shutdown+0xf/0x5a
Pid: 1843, comm: oprofiled Not tainted 2.6.27-rc1-mm1jrousD #1
 [<c011ac79>] __might_sleep+0xdf/0x103
 [<c03688a8>] wait_for_common+0x1f/0x140
 [<c036e602>] ? sub_preempt_count+0x62/0xb0
 [<c036bf14>] ? _spin_unlock_irqrestore+0x53/0x69
 [<c0368a4b>] wait_for_completion+0x12/0x14
 [<c01314fe>] synchronize_rcu+0x2d/0x33
 [<c013154b>] ? wakeme_after_rcu+0x0/0xd
 [<c0137cc5>] atomic_notifier_chain_unregister+0x2b/0x32
 [<c0137cdb>] unregister_die_notifier+0xf/0x14
 [<c02d787c>] nmi_shutdown+0x44/0x84
 [<c02d5c94>] oprofile_shutdown+0x2c/0x5a
 [<c02d697c>] event_buffer_release+0x10/0x3c
 [<c01849a8>] __fput+0xc7/0x1b8
 [<c0184e43>] fput+0x22/0x3b
 [<c0181c32>] filp_close+0x43/0x69
 [<c012266f>] ? exit_files+0x30/0x3c
 [<c012261a>] put_files_struct+0xb1/0xd6
 [<c0122676>] exit_files+0x37/0x3c
 [<c0123b21>] do_exit+0x292/0x909
 [<c013e854>] ? put_lock_stats+0x27/0x3a
 [<c013e8b9>] ? lock_release_holdtime+0x52/0x6b
 [<c0173114>] ? sys_munmap+0x3b/0x42
 [<c01241dd>] do_group_exit+0x45/0x9d
 [<c0124244>] sys_exit_group+0xf/0x11
 [<c0103151>] sysenter_do_call+0x12/0x31
 =======================
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