On Tue, Sep 13, 2005 at 02:36:04PM +0200, Andreas Koch wrote: > Igor, ^^^^^^^ That should be Ivan, sorry for the mix-up (I just had a long phone call with an Igor). Andreas > > 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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