On Sun, Feb 10, 2013 at 12:33 PM, Yinghai Lu [off-list ref] wrote:

On Sun, Feb 10, 2013 at 6:23 AM, Peter Hurley [off-list ref] wrote:

quoted

On Sat, 2013-02-09 at 22:14 -0500, Peter Hurley wrote:

quoted

On Tue, 2013-02-05 at 15:26 -0500, Alan Stern wrote:

quoted

On Tue, 5 Feb 2013, Peter Hurley wrote:

quoted

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