linux-kernel - Re: [PATCH] scsi: fix lockdep warning

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Message-ID: <4bb2602e.170d660a.5493.ffffbf62@mx.google.com>
Date:	Tue, 30 Mar 2010 13:33:50 -0700 (PDT)
From:	Ben Gamari <bgamari.foss@...il.com>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	James Bottomley <James.Bottomley@...senPartnership.com>,
	Greg KH <gregkh@...e.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux-Scsi <linux-scsi@...r.kernel.org>
Subject: Re: [PATCH] scsi: fix lockdep warning

On Tue, 30 Mar 2010 10:08:06 -0700, Yinghai Lu <yinghai@...nel.org> wrote:
> On 03/30/2010 08:05 AM, Ben Gamari wrote:
> > On Sat, 20 Mar 2010 00:17:38 -0700, Yinghai Lu <yinghai@...nel.org> wrote:
> >>
> >> with qlogic and emulex card etc.
> >>
> >> Signed-off-by: Yinghai Lu <yinghai@...nel.org>
> >>
> > 
> > As several others have pointed out, you appear to be call sysfs_bin_attr_init()
> > against statically allocated attributes. Is there an updated patchset that you've been meaning to send out?
> 
> not tracking it for while. it seems James had the same version in scsi-next 
> 
> > 
> > Moreover, there are still failures in the ACPI thermal driver (at very least)
> > on master (9623e5a23724d09283c238960946ec6f65733afe).
> 
> can you send out the trace?
> 
I provided it at the bottom of my last message. I'll also include it below,
just in case. Thanks!

- Ben

       [    3.240692] BUG: key ffff88011b1a9528 not in .data!
       [    3.245578] ------------[ cut here ]------------
       [    3.250195] WARNING: at kernel/lockdep.c:2706 lockdep_init_map+0x125/0x140()
       [    3.257229] Hardware name: Latitude D830                   
       [    3.262793] Modules linked in:
       [    3.265864] Pid: 1, comm: swapper Not tainted 2.6.34-rc2-ben #137
       [    3.271946] Call Trace:
       [    3.274397]  [<ffffffff8105a86b>] warn_slowpath_common+0x7b/0xc0
       [    3.280395]  [<ffffffff8105a8c4>] warn_slowpath_null+0x14/0x20
       [    3.286220]  [<ffffffff8108ea75>] lockdep_init_map+0x125/0x140
       [    3.292046]  [<ffffffff811ae51f>] sysfs_add_file_mode+0x6f/0xd0
       [    3.297960]  [<ffffffff8130b464>] ? snprintf+0x34/0x40
       [    3.303093]  [<ffffffff811ae591>] sysfs_add_file+0x11/0x20
       [    3.308570]  [<ffffffff811ae676>] sysfs_create_file+0x26/0x30
       [    3.314311]  [<ffffffff813bbe99>] device_create_file+0x19/0x20
       [    3.320136]  [<ffffffff8146176b>] thermal_zone_device_register+0x45b/0x860
       [    3.327001]  [<ffffffff81370e45>] acpi_thermal_add+0x245/0x4e4
       [    3.332827]  [<ffffffff811b0250>] ? sysfs_do_create_link+0xd0/0x170
       [    3.339085]  [<ffffffff81347100>] acpi_device_probe+0x50/0x122
       [    3.344909]  [<ffffffff813bee86>] driver_probe_device+0x96/0x1a0
       [    3.350906]  [<ffffffff813bef90>] ? __driver_attach+0x0/0xa0
       [    3.356557]  [<ffffffff813bf02b>] __driver_attach+0x9b/0xa0
       [    3.362121]  [<ffffffff813bef90>] ? __driver_attach+0x0/0xa0
       [    3.367773]  [<ffffffff813be2ac>] bus_for_each_dev+0x6c/0xa0
       [    3.373423]  [<ffffffff813becce>] driver_attach+0x1e/0x20
       [    3.378814]  [<ffffffff813be591>] bus_add_driver+0xe1/0x280
       [    3.384380]  [<ffffffff813bf378>] driver_register+0x78/0x140
       [    3.390031]  [<ffffffff81b2f591>] ? acpi_thermal_init+0x0/0x7b
       [    3.395855]  [<ffffffff81347a70>] acpi_bus_register_driver+0x43/0x45
       [    3.402199]  [<ffffffff81b2f5ea>] acpi_thermal_init+0x59/0x7b
       [    3.407938]  [<ffffffff8100204c>] do_one_initcall+0x3c/0x1a0
       [    3.413591]  [<ffffffff81b05757>] kernel_init+0x15a/0x1e4
       [    3.418984]  [<ffffffff8100aee4>] kernel_thread_helper+0x4/0x10
       [    3.424895]  [<ffffffff815bbf90>] ? restore_args+0x0/0x30
       [    3.430286]  [<ffffffff81b055fd>] ? kernel_init+0x0/0x1e4
       [    3.435678]  [<ffffffff8100aee0>] ? kernel_thread_helper+0x0/0x10
       [    3.441765] ---[ end trace a22d306b065d4a66 ]---
       [    3.446380] BUG: key ffff88011b1a9570 not in .data!

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