Igor, I just had a chance to do some more testing, and the crash even occurs in 2.6.13-rc2. I haven't had a chance to get serial console logs yet, but I assume they will turn out similarly to the ones captured on 2.6.13 (glancing at the text as it scrolled by). So, something must have changed between 2.6.12-rc6+patches and 2.6.13-rc2 (including the patches). Is there anything specific you want me to look for? Andreas On Sat, Sep 03, 2005 at 10:34:01PM +0400, Ivan Kokshaysky wrote: > On Sat, Sep 03, 2005 at 02:45:08AM +0200, Andreas Koch wrote: > > crucial part seem to be the different bridge initialization sections: > > Indeed. > > > 2.6.12-rc6 + Ivan's patches: > ... > > PCI: Bus 7, cardbus bridge: 0000:06:09.0 > > IO window: 00006000-00006fff > > IO window: 00007000-00007fff > > PREFETCH window: 82000000-83ffffff > > MEM window: 8c000000-8dffffff > > PCI: Bus 11, cardbus bridge: 0000:06:09.1 > > IO window: 00008000-00008fff > > IO window: 00009000-00009fff > > PREFETCH window: 84000000-85ffffff > > MEM window: 8e000000-8fffffff > > PCI: Bus 15, cardbus bridge: 0000:06:09.3 > ... > > ... Versus the much shorter output from 2.6.13 > ... > > PCI: Bus 7, cardbus bridge: 0000:06:09.0 > > IO window: 00004000-000040ff > > IO window: 00004400-000044ff > > PREFETCH window: 82000000-83ffffff > > MEM window: 88000000-89ffffff > > PCI: Bridge: 0000:00:1e.0 > > It's mysterious. > So 2.6.13 doesn't see cardbus bridge functions 06:09.1 and 06:09.3, > which means that these devices are not on the per-bus device list. > OTOH, they are still visible on the global device list, since yenta > driver found them. No surprise that it crashes with some uninitialized > pointer. > > I'd suspect some change in PCI probing code between 2.6.12-rc6 and > 2.6.13, but so far I'm unable to find what it was... > > Maybe you could try 2.6.12 release and 2.6.13-rc kernels to see where > it breaks? > (Note that the PCI setup patches that you're using went into 2.6.13-rc2.) > > Ivan.
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