linux-kernel - Next 17 : warn_on lib/debugobjects during mpt driver initialization.

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Date:	Tue, 17 Feb 2009 21:13:31 +0530
From:	"Sachin P. Sant" <sachinp@...ibm.com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
CC:	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Mel Gorman <mel@....ul.ie>
Subject: Next 17 : warn_on lib/debugobjects during mpt driver initialization.

While booting Next 17 on a x86_64 box i get the following warning
messages multiple times.

ODEBUG: object is on stack, but not annotated

------------[ cut here ]------------

WARNING: at lib/debugobjects.c:253 __debug_object_init+0x2bb/0x34d()
Hardware name: BladeCenter LS21 -[79716AA]-
Modules linked in: mptsas(+) mptscsih mptbase scsi_transport_sas sd_mod scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd
Pid: 20, comm: work_on_cpu/0 Tainted: G        W  2.6.29-rc5-autotest-next-20090217 #1
Call Trace:
 [<ffffffff80240744>] warn_slowpath+0xd3/0xf2
 [<ffffffff8039864e>] ? number+0x115/0x21f
 [<ffffffff80529000>] ? _read_lock_irq+0x35/0x41
 [<ffffffff80529100>] ? _read_lock_irqsave+0x47/0x4d
 [<ffffffff80353336>] ? zisofs_readpage+0x178/0x92e
 [<ffffffff8024154f>] ? printk+0x67/0x69
 [<ffffffff803a984d>] ? __debug_object_init+0xd8/0x34d
 [<ffffffff803a9a30>] __debug_object_init+0x2bb/0x34d
 [<ffffffff803a9aef>] debug_object_init+0x14/0x19
 [<ffffffff8024a1bf>] init_timer_key+0x22/0x38
 [<ffffffffa009d9e3>] mpt_config+0x160/0x289 [mptbase]
 [<ffffffff80260835>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffffa009e421>] mpt_findImVolumes+0x88/0x76a [mptbase]
 [<ffffffff80249813>] ? destroy_timer_on_stack+0x10/0x12
 [<ffffffff80526cbd>] ? schedule_timeout+0xb1/0xcd
 [<ffffffff80249deb>] ? process_timeout+0x0/0xb
 [<ffffffff80526cf2>] ? schedule_timeout_uninterruptible+0x19/0x1b
 [<ffffffff8024a23c>] ? msleep+0x14/0x1e
 [<ffffffffa009b237>] ? WaitForDoorbellInt+0x3f/0x91 [mptbase]
 [<ffffffff8052918e>] ? _spin_unlock_irqrestore+0x3f/0x47
 [<ffffffff802606e8>] ? trace_hardirqs_on_caller+0x1f/0x15f
 [<ffffffff8025e6c7>] ? debug_mutex_init+0x31/0x3d
 [<ffffffffa009f1f4>] mpt_do_ioc_recovery+0x6f1/0x16ab [mptbase]
 [<ffffffff80223c0f>] ? flat_send_IPI_mask+0x78/0x8a
 [<ffffffff80529037>] ? _spin_unlock_irq+0x2b/0x31
 [<ffffffff802606e8>] ? trace_hardirqs_on_caller+0x1f/0x15f
 [<ffffffff80260835>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffff80529037>] ? _spin_unlock_irq+0x2b/0x31
 [<ffffffff80526a67>] ? wait_for_common+0xd1/0x11e
 [<ffffffff80526aa2>] ? wait_for_common+0x10c/0x11e
 [<ffffffff80236f84>] ? default_wake_function+0x0/0xf
 [<ffffffff8025443d>] ? kthread_create+0x104/0x117
 [<ffffffff802515f9>] ? worker_thread+0x0/0xe8
 [<ffffffff8025f723>] ? trace_hardirqs_off+0xd/0xf
 [<ffffffff80223c0f>] ? flat_send_IPI_mask+0x78/0x8a
 [<ffffffff80529187>] ? _spin_unlock_irqrestore+0x38/0x47
 [<ffffffff8052918e>] ? _spin_unlock_irqrestore+0x3f/0x47
 [<ffffffff802606e8>] ? trace_hardirqs_on_caller+0x1f/0x15f
 [<ffffffff80260835>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffff803977e3>] ? __up_read+0x7a/0x83
 [<ffffffff80257434>] ? up_read+0x26/0x2b
 [<ffffffff803b3af6>] ? pci_get_slot+0x4b/0x90
 [<ffffffffa00a1ea9>] mpt_attach+0x994/0xb07 [mptbase]
 [<ffffffff802506b7>] ? do_work_for_cpu+0x0/0x1b
 [<ffffffffa00bb941>] mptsas_probe+0x1a/0x439 [mptsas]
 [<ffffffff802506b7>] ? do_work_for_cpu+0x0/0x1b
 [<ffffffff803b2c3e>] local_pci_probe+0x12/0x16
 [<ffffffff802506ca>] do_work_for_cpu+0x13/0x1b
 [<ffffffff80250911>] run_workqueue+0x12c/0x236
 [<ffffffff802508ba>] ? run_workqueue+0xd5/0x236
 [<ffffffff80260835>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffff80260835>] ? trace_hardirqs_on+0xd/0xf
 [<ffffffff802516d4>] worker_thread+0xdb/0xe8
 [<ffffffff802545bc>] ? autoremove_wake_function+0x0/0x38
 [<ffffffff802515f9>] ? worker_thread+0x0/0xe8
 [<ffffffff80254499>] kthread+0x49/0x78
 [<ffffffff8020ceda>] child_rip+0xa/0x20
 [<ffffffff8020c8fc>] ? restore_args+0x0/0x30
 [<ffffffff80239b33>] ? finish_task_switch+0x3b/0xe0
 [<ffffffff80254450>] ? kthread+0x0/0x78
 [<ffffffff8020ced0>] ? child_rip+0x0/0x20
---[ end trace dd3dd2a755e71b34 ]---

Should i be worried about these ?

Complete dmesg log attached. Can provide .config if required.

thanks
-Sachin

-- 

---------------------------------
Sachin Sant
IBM Linux Technology Center
India Systems and Technology Labs
Bangalore, India
---------------------------------


View attachment "dmesg_x86_64_next17" of type "text/plain" (48114 bytes)