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Re: [2.6.27-rc7-git1] (Fedora) - ACPI instabilities and IRQs being disabled

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From: Shawn Starr
Subject: [2.6.27-rc7-git1] (Fedora) - ACPI instabilities and IRQs being disabled
Date: Saturday, September 27, 2008 - 3:40 pm

Hello, I don't know if anyone else has been experiencing ACPI disable IRQs (specifically IRQ 9) but there seems to be a serious regression recently which causes me grief:

I note, I do use VirtualBox, but unless it's somehow causing the usb hub/yenta socket or e1000 devices to go haywire, I would discount it's relation to this.  If you think otherwise, I can certainly disable it.

System: IBM ThinkPad T42:

/proc/interrupts:

           CPU0
  0:     405391    XT-PIC-XT        timer
  1:       7178    XT-PIC-XT        i8042
  2:          0    XT-PIC-XT        cascade
  3:          1    XT-PIC-XT        ehci_hcd:usb1
  4:         18    XT-PIC-XT        serial
  5:        145    XT-PIC-XT        yenta, Intel 82801DB-ICH4 Modem, Intel 82801DB-ICH4
  6:          3    XT-PIC-XT
  7:          0    XT-PIC-XT        parport0
  8:          1    XT-PIC-XT        rtc0
  9:       4336    XT-PIC-XT        acpi, uhci_hcd:usb2, yenta, eth0  <---------------------
 10:          1    XT-PIC-XT        uhci_hcd:usb4
 11:          1    XT-PIC-XT        uhci_hcd:usb3
 12:     154035    XT-PIC-XT        i8042
 14:      27629    XT-PIC-XT        ata_piix
 15:      12342    XT-PIC-XT        ata_piix
NMI:          0   Non-maskable interrupts
LOC:          0   Local timer interrupts
RES:          0   Rescheduling interrupts
CAL:          0   function call interrupts
TLB:          0   TLB shootdowns
TRM:          0   Thermal event interrupts
SPU:          0   Spurious interrupts
ERR:          0
MIS:          0

Here's the stack dump:

Sep 27 18:04:22 segfault kernel: [ 5545.784573] irq 9: nobody cared (try booting with the "irqpoll" option)
Sep 27 18:04:22 segfault kernel: [ 5545.784604] Pid: 87, comm: kacpid Not tainted 2.6.27-0.352.rc7.git1.fc10.i686 #1
Sep 27 18:04:22 segfault kernel: [ 5545.784621]  [<c046da96>] __report_bad_irq+0x33/0x74
Sep 27 18:04:22 segfault kernel: [ 5545.784666]  [<c046dca6>] note_interrupt+0x1cf/0x221
Sep 27 18:04:22 segfault kernel: [ 5545.784681]  [<c044b419>] ? ...
[ message continues ]
[view original message]
From: Shawn Starr
Subject: Re: [2.6.27-rc7-git1] (Fedora) - ACPI instabilities and IRQs being disabled
Date: Sunday, September 28, 2008 - 2:24 pm

On Saturday 27 September 2008 18:40:24 Shawn Starr wrote:

I believe 
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=de85422b94...

is causing this regression. Can someone confirm this to be the case? It 
certainly looks suspicious given the handler lines showing this exact sort of 
code path...

Thanks, 


--


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