Hi Bjorn,
Commit dc9887dc ("x86/PCI: allocate space from the end of a region, not
the beginning") causes the kernel to hang on my Dell Inspiron 1545.
2.6.36 and booting with pci=nocrs works fine. Reverting this commit also
works. I am attaching the kernel log and system iomem from the working
2.6.36. It hangs at this location consistently:
pci-stub: invalid id string ""
ACPI: AC Adapter [AC] (on-line)
input: Lid Switch as
/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input0
< hang >
Let me know if you need any other info.
Regards,
David.
On Wed, Nov 17, 2010 at 09:10:19PM +0530, David John wrote:
> Commit dc9887dc ("x86/PCI: allocate space from the end of a region, not
> the beginning") causes the kernel to hang on my Dell Inspiron 1545.
> 2.6.36 and booting with pci=nocrs works fine. Reverting this commit also
> works. I am attaching the kernel log and system iomem from the working
> 2.6.36. It hangs at this location consistently:
>
> pci-stub: invalid id string ""
> ACPI: AC Adapter [AC] (on-line)
> input: Lid Switch as
> /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input0
>
> < hang >
>
> Let me know if you need any other info.
Thanks a lot for this report. I opened this bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=23132
to track it.
Would you mind attaching the dmesg log from 2.6.37-rc2 with
commit dc9887dc reverted? That should have a little more
information (PCI allocation closer to what fails, and also
more PNP resource information).
The PCI assignments Linux did are only for bridge windows,
and I don't see anything actually *using* those windows, so
I suspect they might conflict with an ACPI/PNP device, which
is what we're poking at when it hangs.
If you happen to have Windows on this box as well, an
Everest report (http://lavalys.com) would be interesting.
If not, no worries.
Thanks again,
Bjorn
On 11/18/2010 12:54 AM, Bjorn Helgaas wrote:
> On Wed, Nov 17, 2010 at 09:10:19PM +0530, David John wrote:
>> Commit dc9887dc ("x86/PCI: allocate space from the end of a region, not
>> the beginning") causes the kernel to hang on my Dell Inspiron 1545.
>> 2.6.36 and booting with pci=nocrs works fine. Reverting this commit also
>> works. I am attaching the kernel log and system iomem from the working
>> 2.6.36. It hangs at this location consistently:
>>
>> pci-stub: invalid id string ""
>> ACPI: AC Adapter [AC] (on-line)
>> input: Lid Switch as
>> /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0D:00/input/input0
>>
>> < hang >
>>
>> Let me know if you need any other info.
>
> Thanks a lot for this report. I opened this bugzilla:
> https://bugzilla.kernel.org/show_bug.cgi?id=23132
> to track it.
>
> Would you mind attaching the dmesg log from 2.6.37-rc2 with
> commit dc9887dc reverted? That should have a little more
> information (PCI allocation closer to what fails, and also
> more PNP resource information).
Attached in Bugzilla.
> If you happen to have Windows on this box as well, an
> Everest report (http://lavalys.com) would be interesting.
> If not, no worries.
Nope, no Windows on this box, Sorry.
Regards,
David.