I get a spew of these on boot.  The  virtual machine is mostly Fedora 14
with a kernel from linux-next as of today.  The hardware is RHEL 5.5
with KVM:

tree: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
tag: next-20100412
commit: bbeecf185fe464ccd7ee97ce6d3646ad686995b4

I get one for 1.0, 1.1, 1.2, 2.0, 3.0, 4.0, 5.0.  Below I only show the
example for 1.0.  Attached should be the full dmesg and config.  Please
let me know about any ideas, tests, questions, or things I can do to
help debug the spew....


[    1.681281] ------------[ cut here ]------------
[    1.682249] WARNING: at fs/sysfs/dir.c:451 sysfs_add_one+0xa9/0xc0()
[    1.683227] Hardware name: KVM
[    1.684169] sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:01.0/slot'
[    1.685159] Modules linked in:
[    1.686638] Pid: 1, comm: swapper Not tainted 2.6.34-rc3-next-20100412+ #65
[    1.687878] Call Trace:
[    1.688550]  [<ffffffff81178549>] ? sysfs_add_one+0xa9/0xc0
[    1.689567]  [<ffffffff810561c7>] warn_slowpath_common+0x87/0xb0
[    1.690554]  [<ffffffff81056274>] warn_slowpath_fmt+0x64/0x70
[    1.691808]  [<ffffffff81178000>] ? sysfs_pathname+0x40/0x50
[    1.692800]  [<ffffffff81178000>] ? sysfs_pathname+0x40/0x50
[    1.693971]  [<ffffffff81178000>] ? sysfs_pathname+0x40/0x50
[    1.695061]  [<ffffffff81178000>] ? sysfs_pathname+0x40/0x50
[    1.696170]  [<ffffffff81178549>] sysfs_add_one+0xa9/0xc0
[    1.697152]  [<ffffffff811791c1>] sysfs_do_create_link+0xb1/0x150
[    1.698309]  [<ffffffff8117927e>] sysfs_create_link+0xe/0x10
[    1.699301]  [<ffffffff8128d43b>] pci_create_sysfs_dev_files+0x39b/0x4b0
[    1.700630]  [<ffffffff8128bd54>] ? pci_get_subsys+0x74/0xa0
[    1.701621]  [<ffffffff81ad58b3>] pci_sysfs_init+0x33/0x60
[    1.702772]  [<ffffffff81ad5880>] ? pci_sysfs_init+0x0/0x60
[    1.703763]  [<ffffffff81002041>] do_one_initcall+0x31/0x190
[    1.704907]  [<ffffffff81aa701c>] kernel_init+0x1fc/0x2e0
[    1.705978]  [<ffffffff8100bc24>] kernel_thread_helper+0x4/0x10
[    1.707100]  [<ffffffff814e03d4>] ? restore_args+0x0/0x30
[    1.713450]  [<ffffffff81aa6e20>] ? kernel_init+0x0/0x2e0
[    1.714440]  [<ffffffff8100bc20>] ? kernel_thread_helper+0x0/0x10
[    1.715605] ---[ end trace 9bb6b2f8220af22f ]---