On Fri, 15 Aug 2008 10:41:51 +0800 Zhang Rui wrote:

> Please attach the full dmesg output.

Done.


> thanks,
> rui
> 
> 
> On Thu, 2008-08-14 at 08:38 -0700, Randy Dunlap wrote:
> > calling  param_sysfs_init+0x0/0x1e7
> > ------------[ cut here ]------------
> > WARNING: at fs/sysfs/dir.c:463 sysfs_add_one+0x35/0x3d()
> > sysfs: duplicate filename 'acpi' can not be created
> > Modules linked in:
> > Pid: 1, comm: swapper Not tainted 2.6.27-rc3-next-20080814 #1
> > 
> > Call Trace:
> >  [<ffffffff802358cb>] warn_slowpath+0xae/0xdd
> >  [<ffffffff8036a6be>] ? number+0x115/0x21f
> >  [<ffffffff8036574d>] ? __next_cpu+0x19/0x26
> >  [<ffffffff8022d575>] ? find_busiest_group+0x25b/0x6ee
> >  [<ffffffff8036aefc>] ? string+0x3d/0xa2
> >  [<ffffffff80365e02>] ? idr_get_empty_slot+0x161/0x24e
> >  [<ffffffff8036b2ea>] ? vsnprintf+0x389/0x678
> >  [<ffffffff802def96>] ? sysfs_ilookup_test+0x0/0x14
> >  [<ffffffff802aa5bf>] ? ifind+0x3d/0xac
> >  [<ffffffff802df1bd>] ? sysfs_find_dirent+0x1c/0x31
> >  [<ffffffff802df1f1>] ? __sysfs_add_one+0x1f/0x7c
> >  [<ffffffff802df283>] sysfs_add_one+0x35/0x3d
> >  [<ffffffff802df7d2>] create_dir+0x58/0x93
> >  [<ffffffff802df845>] sysfs_create_dir+0x38/0x4f
> >  [<ffffffff80366b8a>] kobject_add_internal+0xce/0x18f
> >  [<ffffffff80366d17>] kobject_add_varg+0x41/0x4d
> >  [<ffffffff80366d91>] kobject_init_and_add+0x6e/0x7c
> >  [<ffffffff803676e5>] ? kobject_uevent_env+0x350/0x37f
> >  [<ffffffff802455bf>] ? param_sysfs_setup+0xe1/0x104
> >  [<ffffffff80764a30>] kernel_param_sysfs_setup+0x6b/0xc6
> >  [<ffffffff80764bee>] param_sysfs_init+0x163/0x1e7
> >  [<ffffffff80249b00>] ? ktime_get_ts+0x14/0x4e
> >  [<ffffffff80764a8b>] ? param_sysfs_init+0x0/0x1e7
> >  [<ffffffff80209047>] _stext+0x47/0x13f
> >  [<ffffffff80269f25>] ? register_irq_proc+0xb7/0xd3
> >  [<ffffffff807508e5>] kernel_init+0x11b/0x171
> >  [<ffffffff802311ef>] ? schedule_tail+0x28/0x60
> >  [<ffffffff8020ce49>] child_rip+0xa/0x11
> >  [<ffffffff807507ca>] ? kernel_init+0x0/0x171
> >  [<ffffffff8020ce3f>] ? child_rip+0x0/0x11
> > 
> > ---[ end trace 4eaa2a86a8e2da22 ]---
> > kobject_add_internal failed for acpi with -EEXIST, don't try to register things with the same name in the same directory.
> > Pid: 1, comm: swapper Tainted: G        W 2.6.27-rc3-next-20080814 #1
> > 
> > Call Trace:
> >  [<ffffffff8036698f>] ? kobject_put+0x47/0x4b
> >  [<ffffffff80366c08>] kobject_add_internal+0x14c/0x18f
> >  [<ffffffff80366d17>] kobject_add_varg+0x41/0x4d
> >  [<ffffffff80366d91>] kobject_init_and_add+0x6e/0x7c
> >  [<ffffffff803676e5>] ? kobject_uevent_env+0x350/0x37f
> >  [<ffffffff802455bf>] ? param_sysfs_setup+0xe1/0x104
> >  [<ffffffff80764a30>] kernel_param_sysfs_setup+0x6b/0xc6
> >  [<ffffffff80764bee>] param_sysfs_init+0x163/0x1e7
> >  [<ffffffff80249b00>] ? ktime_get_ts+0x14/0x4e
> >  [<ffffffff80764a8b>] ? param_sysfs_init+0x0/0x1e7
> >  [<ffffffff80209047>] _stext+0x47/0x13f
> >  [<ffffffff80269f25>] ? register_irq_proc+0xb7/0xd3
> >  [<ffffffff807508e5>] kernel_init+0x11b/0x171
> >  [<ffffffff802311ef>] ? schedule_tail+0x28/0x60
> >  [<ffffffff8020ce49>] child_rip+0xa/0x11
> >  [<ffffffff807507ca>] ? kernel_init+0x0/0x171
> >  [<ffffffff8020ce3f>] ? child_rip+0x0/0x11
> > 
> > Module 'acpi' failed to be added to sysfs, error number -17
> > The system will be unstable now.
> > initcall param_sysfs_init+0x0/0x1e7 returned 0 after 19 msecs


---
~Randy
Linux Plumbers Conference, 17-19 September 2008, Portland, Oregon USA
http://linuxplumbersconf.org/