Re: lockups

From: Jason King <jasonking_at_sbcglobal.net>
Date: Mon, 24 May 2004 23:40:19 -0500
John Baldwin wrote:

>On Sunday 23 May 2004 12:30 am, Jason King wrote:
>  
>
>>John Baldwin wrote:
>>    
>>
>>>On Friday 14 May 2004 08:54 pm, Jason King wrote:
>>>      
>>>
>>>>ok i'm a dumbass... in my haste this morning, i commented out the wrong
>>>>line in my config file, so when i tried disabling mixed mode, apic
>>>>support wasn't even compiled in the kernel.  So to make extra sure, I
>>>>went back and explicitly tried it with the 5.2.1-RELEASE cd (disabling
>>>>apic worked, disabling mixed mode did not), so its really something
>>>>related to apic support.  So next question, what can I do to track down
>>>>the problem?  Any suggestions for resources to understand how the apic
>>>>stuff works?  Might there be a way to grab the kernel messages even
>>>>after a reboot since the lockups don't even my to drop to the debugger?
>>>>Doing a boot -v generated a bunch of text that I couldn't read as it
>>>>scrolled by too fast, and I'm wondering if it might possibly help shed
>>>>some light as to what's going on...
>>>>        
>>>>
>>>Note that you can't disable mixed mode via a tunable on 5.2.1, so you
>>>might want to retest disabling mixed mode.  However, the first steps are
>>>to work on the non-ACPI case as that is easiest.  I'll need 'mptable'
>>>output and dmesg output from a verbose boot with APIC enabled and ACPI
>>>disabled if you can get that.  Thanks.
>>>      
>>>
>>Unfortunately, booting with ACPI disabled and apic enabled still caused
>>the system to hang.  So anytime apic is enabled, the system locks up.
>>(i've tried just the kernel with no modules loaded as well as with the
>>normal modules I use loaded, locks up, but in a different place).  I was
>>able to pull off the output from a boot -v using a serial console.  I've
>>attached that.  Hopefully that helps...
>>    
>>
>
>Can you provide mptable output?
>
>  
>
Here is the mptable output.



===============================================================================

MPTable, version 2.0.15

-------------------------------------------------------------------------------

MP Floating Pointer Structure:

  location:			BIOS
  physical address:		0x000f51f0
  signature:			'_MP_'
  length:			16 bytes
  version:			1.4
  checksum:			0x84
  mode:				Virtual Wire

-------------------------------------------------------------------------------

MP Config Table Header:

  physical address:		0x000f0d00
  signature:			'PCMP'
  base table length:		256
  version:			1.4
  checksum:			0x16
  OEM ID:			'OEM00000'
  Product ID:			'PROD00000000'
  OEM table pointer:		0x00000000
  OEM table size:		0
  entry count:			25
  local APIC address:		0xfee00000
  extended table length:	0
  extended table checksum:	0

-------------------------------------------------------------------------------

MP Config Base Table Entries:

--
Processors:	APIC ID	Version	State		Family	Model	Step	Flags
		 0	 0x11	 BSP, usable	 6	 8	 1	 0xfbff
--
Bus:		Bus ID	Type
		 0	 PCI   
		 1	 PCI   
		 2	 PCI   
		 3	 ISA   
--
I/O APICs:	APIC ID	Version	State		Address
		 2	 0x11	 usable		 0xfec00000
--
I/O Ints:	Type	Polarity    Trigger	Bus ID	 IRQ	APIC ID	PIN#
		INT	active-lo       level	     2	 0:A	      2	  19
		INT	active-lo       level	     1	 7:A	      2	  19
		ExtINT	 conforms    conforms	     3	   0	      2	   0
		INT	 conforms    conforms	     3	   1	      2	   1
		INT	 conforms    conforms	     3	   0	      2	   2
		INT	 conforms    conforms	     3	   3	      2	   3
		INT	 conforms    conforms	     3	   4	      2	   4
		INT	 conforms    conforms	     3	   5	      2	   5
		INT	 conforms    conforms	     3	   6	      2	   6
		INT	 conforms    conforms	     3	   7	      2	   7
		INT	active-hi        edge	     3	   8	      2	   8
		INT	 conforms    conforms	     3	  10	      2	  10
		INT	 conforms    conforms	     3	  11	      2	  11
		INT	 conforms    conforms	     3	  12	      2	  12
		INT	 conforms    conforms	     3	  13	      2	  13
		INT	 conforms    conforms	     3	  14	      2	  14
		INT	 conforms    conforms	     3	  15	      2	  15
--
Local Ints:	Type	Polarity    Trigger	Bus ID	 IRQ	APIC ID	PIN#
		ExtINT	 conforms    conforms	     0	 0:A	    255	   0
		NMI	 conforms    conforms	     0	 0:A	    255	   1

===============================================================================
Received on Mon May 24 2004 - 19:41:32 UTC

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