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    DateSat, 29 Sep 2007 08:19:42 -0700
    FromGreg KH <>
    SubjectRe: 2.6.23-rc8-mm2
    On Sat, Sep 29, 2007 at 05:37:29PM +0800, Dave Young wrote:
    > Hi,
    > The kernel report warnings about sysfs filename duplicate under
    > rc8-mm1 and rc8-mm2.
    >  1.
    > ----cut----
    > NET: Registered protocol family 16
    > ACPI: bus type pci registered
    > PCI: PCI BIOS revision 2.10 entry at 0xfb93e, last bus=3
    > PCI: Using configuration type 1
    > Setting up standard PCI resources
    > sysfs: duplicate filename 'usbcore' can not be created
    > WARNING: at fs/sysfs/dir.c:433 sysfs_add_one()
    >  [<c010528f>] dump_trace+0x1bf/0x1d0
    >  [<c0105358>] show_trace_log_lvl+0x18/0x30
    >  [<c010537f>] show_trace+0xf/0x20
    >  [<c01054a2>] dump_stack+0x12/0x20
    >  [<c01c6680>] sysfs_add_one+0xa0/0xe0
    >  [<c01c69e8>] create_dir+0x48/0xb0
    >  [<c01c6a99>] sysfs_create_dir+0x29/0x50
    >  [<c02501eb>] create_dir+0x1b/0x50
    >  [<c02504b6>] kobject_add+0x46/0x150
    >  [<c05a38a0>] kernel_param_sysfs_setup+0x50/0xb0
    >  [<c05a39ee>] param_sysfs_builtin+0xee/0x130
    >  [<c05a3a54>] param_sysfs_init+0x24/0x60
    >  [<c0592866>] do_initcalls+0x46/0x1e0
    >  [<c0592aa2>] kernel_init+0x62/0xb0
    >  [<c0104fb3>] kernel_thread_helper+0x7/0x14
    >  =======================
    > kobject_add failed for usbcore with -EEXIST, don't try to register
    > things with the same name in the same directory.
    
    That is very wierd, do you have both USB built in and as a module
    somehow?
    
    >  [<c010528f>] dump_trace+0x1bf/0x1d0
    >  [<c0105358>] show_trace_log_lvl+0x18/0x30
    >  [<c010537f>] show_trace+0xf/0x20
    >  [<c01054a2>] dump_stack+0x12/0x20
    >  [<c0250566>] kobject_add+0xf6/0x150
    >  [<c05a38a0>] kernel_param_sysfs_setup+0x50/0xb0
    >  [<c05a39ee>] param_sysfs_builtin+0xee/0x130
    >  [<c05a3a54>] param_sysfs_init+0x24/0x60
    >  [<c0592866>] do_initcalls+0x46/0x1e0
    >  [<c0592aa2>] kernel_init+0x62/0xb0
    >  [<c0104fb3>] kernel_thread_helper+0x7/0x14
    >  =======================
    > Module 'usbcore' failed to be added to sysfs, error number -17
    
    I think I need to clean up the double stack trace here, that's reall not
    needed :)
    
    thanks,
    
    greg k-h
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