On Sun, Feb 10, 2013 at 12:33 PM, Yinghai Lu <yinghai@kernel.org> wrote:
> On Sun, Feb 10, 2013 at 6:23 AM, Peter Hurley <peter@hurleysoftware.com> wrote:
>> On Sat, 2013-02-09 at 22:14 -0500, Peter Hurley wrote:
>>> On Tue, 2013-02-05 at 15:26 -0500, Alan Stern wrote:
>>> > On Tue, 5 Feb 2013, Peter Hurley wrote:
>>> >
>>> > > With -next-20130204:
>>> > >
>>> > > [   33.855570] irq 18: nobody cared (try booting with the "irqpoll" option)
>>> > > [   33.855580] Pid: 0, comm: swapper/4 Not tainted 3.8.0-next-20130204-xeon #20130204
>>> > > [   33.855582] Call Trace:
>>> > > [   33.855585]  <IRQ>  [<ffffffff810f1076>] __report_bad_irq+0x36/0xe0
>>> > > [   33.855600]  [<ffffffff810f152a>] note_interrupt+0x1aa/0x200
>>> > > [   33.855606]  [<ffffffff8101edf2>] ? mwait_idle+0x82/0x1b0
>>> > > [   33.855610]  [<ffffffff810eed89>] handle_irq_event_percpu+0xc9/0x260
>>> > > [   33.855614]  [<ffffffff810eef68>] handle_irq_event+0x48/0x70
>>> > > [   33.855618]  [<ffffffff810f20ba>] handle_fasteoi_irq+0x5a/0x100
>>> > > [   33.855624]  [<ffffffff810182f2>] handle_irq+0x22/0x40
>>> > > [   33.855630]  [<ffffffff816e2a9a>] do_IRQ+0x5a/0xd0
>>> > > [   33.855636]  [<ffffffff816d97ad>] common_interrupt+0x6d/0x6d
>>> > > [   33.855638]  <EOI>  [<ffffffff810f8e2a>] ? rcu_eqs_enter_common+0x4a/0x320
>>> > > [   33.855646]  [<ffffffff8101edf2>] ? mwait_idle+0x82/0x1b0
>>> > > [   33.855649]  [<ffffffff8101ed99>] ? mwait_idle+0x29/0x1b0
>>> > > [   33.855653]  [<ffffffff8101f8a6>] cpu_idle+0x116/0x130
>>> > > [   33.855658]  [<ffffffff816c0c0f>] start_secondary+0x251/0x258
>>> > > [   33.855660] handlers:
>>> > > [   33.855664] [<ffffffff814f98a0>] usb_hcd_irq
>>> > > [   33.855667] Disabling IRQ #18
>>> > >
>> https://bugzilla.kernel.org/show_bug.cgi?id=53561
>>
>> Maybe this is some interaction with all the new ACPI code and fixes
>> written in those 8 days.
>
> interrupt routing seems get changed:
> next:
>    5:          0          0          0          0          0
> 0          0          0   IO-APIC-fasteoi   snd_ctxfi
>   18:      99970         13         16         20      99940
> 13         13         16   IO-APIC-fasteoi   uhci_hcd:usb4
> v3.8-rc7:
>   18:        424         15         11        112        420
> 16         18        105   IO-APIC-fasteoi   uhci_hcd:usb4, snd_ctxfi
>
> These messages in the bad dmesg log are interesting since PCI INT A is routed
> on
> irq 18 with the kernels that work.
> [    8.983246] pci 0000:00:1e.0: can't derive routing for PCI INT A
> [    8.983600] snd_ctxfi 0000:09:02.0: PCI INT A: no GSI - using ISA IRQ 5
> ...
>
> acpi_pci_irq_add_prt() add wrong bus for that bridge, because that
> that bridge is not scanned.
>
> Will check if I can produce one patch for it.

Hi Peter,

Can you try attached debug patch?

Thanks

Yinghai