linux-kernel - qlogic lockdep warning

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Date:	Wed, 20 Jan 2010 17:10:02 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Ingo Molnar <mingo@...e.hu>,
	James Bottomley <James.Bottomley@...senpartnership.com>,
	James.Bottomley@...e.de
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux-Scsi <linux-scsi@...r.kernel.org>
Subject: qlogic lockdep warning

[   77.814629] calling  qla2x00_module_init+0x0/0x12b @ 1
[   77.818427] QLogic Fibre Channel HBA Driver: 8.03.02-k0
[   77.834218] qla2xxx 0000:86:00.0: PCI INT A -> GSI 59 (level, low) -> IRQ 59
[   77.839720] qla2xxx 0000:86:00.0: MSI-X vector count: 31
[   77.854678] qla2xxx 0000:86:00.0: Found an ISP2532, irq 59, iobase
0xffffc9002acb0000
[   77.871740] qla2xxx 0000:86:00.0: using 64bit consistent DMA mask
[   77.876934]   alloc irq_desc for 88 on node 3
[   77.879181]   alloc kstat_irqs on node 3
[   77.894822] qla2xxx 0000:86:00.0: irq 88 for MSI/MSI-X
[   77.899210]   alloc irq_desc for 89 on node 3
[   77.913580]   alloc kstat_irqs on node 3
[   77.916743] qla2xxx 0000:86:00.0: irq 89 for MSI/MSI-X
[   77.920996] qla2xxx 0000:86:00.0: Configuring PCI space...
[   77.937287] qla2xxx 0000:86:00.0: setting latency timer to 64
[   77.951598] qla2xxx 0000:86:00.0: enabling Mem-Wr-Inval
[   77.962879] ------------[ cut here ]------------
[   77.965784] WARNING: at kernel/lockdep.c:2332
trace_hardirqs_on_caller+0xc6/0x14b()
[   77.977492] Hardware name: Sun
[   77.979485] Modules linked in:
[   77.994337] Pid: 0, comm: swapper Not tainted
2.6.33-rc4-tip-yh-03949-g3a8e3f5-dirty #64
[   78.000120] Call Trace:
[   78.013298]  <IRQ>  [<ffffffff81076b54>] warn_slowpath_common+0x7c/0x94
[   78.017746]  [<ffffffff81cd712c>] ? _raw_spin_unlock_irq+0x30/0x36
[   78.035171]  [<ffffffff81076b80>] warn_slowpath_null+0x14/0x16
[   78.040152]  [<ffffffff810a2ae8>] trace_hardirqs_on_caller+0xc6/0x14b
[   78.055400]  [<ffffffff810a2b7a>] trace_hardirqs_on+0xd/0xf
[   78.058951]  [<ffffffff81cd712c>] _raw_spin_unlock_irq+0x30/0x36
[   78.074889]  [<ffffffff816461ef>] qla24xx_msix_default+0x243/0x281
[   78.091598]  [<ffffffff810a5752>] ? __lock_release+0xa5/0xae
[   78.096799]  [<ffffffff810c02ae>] handle_IRQ_event+0x53/0x113
[   78.111568]  [<ffffffff810c2061>] handle_edge_irq+0xf3/0x13b
[   78.116255]  [<ffffffff81035109>] handle_irq+0x24/0x2f
[   78.132063]  [<ffffffff81cdc4b4>] do_IRQ+0x5c/0xc3
[   78.134684]  [<ffffffff81cd7393>] ret_from_intr+0x0/0xf
[   78.137903]  <EOI>  [<ffffffff81039a56>] ? mwait_idle+0xaf/0xbb
[   78.155674]  [<ffffffff81039a4d>] ? mwait_idle+0xa6/0xbb
[   78.158600]  [<ffffffff81031c7c>] cpu_idle+0x61/0xa1
[   78.174333]  [<ffffffff81c85d7a>] rest_init+0x7e/0x80
[   78.178122]  [<ffffffff82832d1f>] start_kernel+0x316/0x31d
[   78.193623]  [<ffffffff82832297>] x86_64_start_reservations+0xa7/0xab
[   78.198924]  [<ffffffff8283237f>] x86_64_start_kernel+0xe4/0xeb
[   78.214540] ---[ end trace be4529f30a2e4ef5 ]---
[   78.225365] qla2xxx 0000:86:00.0: Configure NVRAM parameters...
[   78.243079] qla2xxx 0000:86:00.0: Verifying loaded RISC code...
[   78.247917] qla2xxx 0000:86:00.0: firmware: using built-in firmware
ql2500_fw.bin
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