pci_proc_init: proc_dir_entry '00' already registered

[Alexey Dobriyan]

On Sun, Feb 10, 2008 at 11:07:57AM +0100, Olaf Hering wrote:
> Current Linus tree gives this new warning during bootup:
> 
> +proc_dir_entry '00' already registered
> +Call Trace:
> +[c00000007b0dfba0] [c00000000000e4b0] .show_stack+0x70/0x1bc (unreliable)
> +[c00000007b0dfc50] [c0000000000f2714] .proc_register+0x130/0x210
> +[c00000007b0dfd00] [c0000000000f299c] .proc_mkdir_mode+0x40/0x70
> +[c00000007b0dfd80] [c000000000276ed8] .pci_proc_attach_device+0xac/0x144
> +[c00000007b0dfe20] [c0000000005bdb3c] .pci_proc_init+0x74/0xac
> +[c00000007b0dfea0] [c0000000005a27ac] .kernel_init+0x1d0/0x394
> +[c00000007b0dff90] [c00000000001e258] .kernel_thread+0x4c/0x68

Can you insert dump_stack() when '00' is registered, not just second
time?