James Bottomley wrote: > On Mon, 2009-01-19 at 12:11 +0900, Kenji Kaneshige wrote: >> I'm sending the debug patch against 2.6.29-rc1 below. I'm also >> sending it as an attachment. It also contains the code to prevent >> the kernel panic from you. Please note that you will see two >> WARN_ON(1) messages with the patch. Those are shown by my debug >> patch. >> >> Could you try it and send me the whole dmsg output? > > Actually, the machine is now running -rc2, so the patch doesn't quite > apply: > > jejb@sparkweed> patch -p1 < ~/tmp.diff > patching file include/linux/pci-acpi.h > patching file drivers/pci/hotplug/acpiphp_glue.c > Hunk #1 FAILED at 266. > Hunk #2 succeeded at 467 (offset 2 lines). > Hunk #3 succeeded at 489 (offset 2 lines). > Hunk #4 succeeded at 518 (offset 2 lines). > Hunk #5 succeeded at 556 (offset 2 lines). > > Looks like the rejection is in the NULL check piece, so I've already > actually sent you the information it would produce. > > The dmesg output is pretty big, below. > Thank you very much, James. Thanks to you, I found the root cause of the problem. The acpi_pci_get_bridge_handle() function assumes pci_bus->self is NULL on the root bus. But it is not true and pci_bus->self can have a non-NULL value on some platfroms (like yours). So it must check pci_bus->parent instead. I found some other code that has the same wrong assumption. I'll make a fix for them and send it soon. Thanks, Kenji Kaneshige -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
