linux-kernel - Kernel warning from latest 2.6.28-gitX

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Date:	Fri, 02 Jan 2009 21:24:14 -0600
From:	Larry Finger <Larry.Finger@...inger.net>
To:	LKML <linux-kernel@...r.kernel.org>
Subject: Kernel warning from latest 2.6.28-gitX

Kernel v2.6.28-5356-g6680598 generates the following warning at bootup:

WARNING: at kernel/lockdep.c:2197 trace_hardirqs_on_caller+0xb8/0x138()
Hardware name: HP Pavilion dv2700 Notebook PC
Modules linked in: ide_cd_mod(+) k8temp joydev soundcore cfg80211
serio_raw hwmon wmi button battery ac forcedeth snd_page_alloc cdrom
sg sd_mod ohci_hcd uhci_hcd ehci_hcd usbcore edd ext3 mbcache jbd fan
amd74xx ide_core ahci libata scsi_mod thermal processor
Pid: 1243, comm: udevd Not tainted 2.6.28-Linus-05356-g6680598 #28
Call Trace:
 <IRQ>  [<ffffffff8023dde7>] warn_slowpath+0xb6/0xf2
 [<ffffffff8045b152>] ? _spin_unlock_irqrestore+0x3d/0x4c
 [<ffffffff80231af5>] ? enqueue_entity+0x118/0x120
 [<ffffffff8025e6fa>] ? trace_hardirqs_off+0xd/0xf
 [<ffffffffa00a13bc>] ? ide_do_drive_cmd+0x35/0x69 [ide_core]
 [<ffffffff8045b110>] ? _spin_unlock_irq+0x30/0x35
 [<ffffffff8025fe38>] trace_hardirqs_on_caller+0xb8/0x138
 [<ffffffff8025fec5>] trace_hardirqs_on+0xd/0xf
 [<ffffffff8045b110>] _spin_unlock_irq+0x30/0x35
 [<ffffffffa00a19a8>] do_ide_request+0x58/0x5ac [ide_core]
 [<ffffffff80322273>] blk_start_queueing+0x22/0x2b
 [<ffffffffa00a13d9>] ide_do_drive_cmd+0x52/0x69 [ide_core]
 [<ffffffffa022287c>] cdrom_queue_request_sense+0x93/0x9f [ide_cd_mod]
 [<ffffffffa0222b86>] cdrom_decode_status+0x2fe/0x320 [ide_cd_mod]
 [<ffffffffa02231d8>] cdrom_newpc_intr+0x98/0x5a8 [ide_cd_mod]
 [<ffffffffa0223140>] ? cdrom_newpc_intr+0x0/0x5a8 [ide_cd_mod]
 [<ffffffffa00a15a2>] ide_intr+0x16b/0x1e4 [ide_core]
 [<ffffffff8027967d>] handle_IRQ_event+0x25/0x5a
 [<ffffffff8027a9fb>] handle_edge_irq+0xe7/0x12d
 [<ffffffff8045bb9d>] __irqentry_text_start+0x75/0xe9
 [<ffffffff8020cd13>] ret_from_intr+0x0/0xf
 <EOI> <4>---[ end trace ac9dde4da52e7265 ]---
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