OK, this is what I guessed by playing with 2.5.69-mm6:
1. Simply by changing KOBJ_NAME_LEN from 20 to 16 fixes the problem.
This leads me to think there are some parts of the kernel (a driver, to
be more exact) that are corrupting memory or doing something really
nasty that is affecting PCI ID's tables and pci_bus_match() function.
2. Disabling or enabling preemptible kernel does not help.
3. Now, changing KOBJ_NAME_LEN back to 20, and then disabling support
for the ALSA Yamaha PCI driver (YMFPCI) fixes the problem. I have tried
disabling other drivers, like USB-UHCI, AGPGART, but it doesn't help.
However, disabling YMFPCI solves the problem. So I guess, we've got a
problem at alsa_card_ymfpci_init() function. Note that the YMFPCI was
built-in into the kernel, and not as a module. However, building YMFPCI
as a module still produces an oops. I'll post more information when I
investigate a little more about this.
Any ideas on what's could be going on here? It's driving me nutts!
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