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* do_IRQ stack overflow on 32-bit CentOS 4
@ 2009-06-30 17:00 Orion Poplawski
  2009-06-30 17:52 ` Eric Sandeen
  0 siblings, 1 reply; 3+ messages in thread
From: Orion Poplawski @ 2009-06-30 17:00 UTC (permalink / raw)
  To: linux-xfs

Just hit a:

do_IRQ: stack overflow: 452

on 32-bit CentOS 4 machine with xfs-kmod-0.4-2.el4.  Is there anything that can
be done to minimize this risk?  Running xfs over md raid5 array, exporting via
nfs.  More kernel dump messages are posted at:

http://bugs.centos.org/view.php?id=3136

Thanks!


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^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: do_IRQ stack overflow on 32-bit CentOS 4
  2009-06-30 17:00 do_IRQ stack overflow on 32-bit CentOS 4 Orion Poplawski
@ 2009-06-30 17:52 ` Eric Sandeen
  2009-06-30 18:10   ` Eric Sandeen
  0 siblings, 1 reply; 3+ messages in thread
From: Eric Sandeen @ 2009-06-30 17:52 UTC (permalink / raw)
  To: Orion Poplawski; +Cc: linux-xfs

Orion Poplawski wrote:
> Just hit a:
> 
> do_IRQ: stack overflow: 452
> 
> on 32-bit CentOS 4 machine with xfs-kmod-0.4-2.el4.  Is there anything that can
> be done to minimize this risk?  Running xfs over md raid5 array, exporting via
> nfs.  More kernel dump messages are posted at:
> 
> http://bugs.centos.org/view.php?id=3136

get an x86_64 machine ;)

The stack overflow message is misleading; it means you have 452 -left-

unfortunately on some kernels, simply printing that message actually
consumes what's left, and more.  See http://lkml.org/lkml/2007/8/29/245

This was fixed in 2.6.18-108.el5 and beyond.

Upstream has some xfs stack size fixes; this may eventually make it to a
centos near you.

-Eric

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^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: do_IRQ stack overflow on 32-bit CentOS 4
  2009-06-30 17:52 ` Eric Sandeen
@ 2009-06-30 18:10   ` Eric Sandeen
  0 siblings, 0 replies; 3+ messages in thread
From: Eric Sandeen @ 2009-06-30 18:10 UTC (permalink / raw)
  To: Orion Poplawski; +Cc: linux-xfs

Eric Sandeen wrote:
> Orion Poplawski wrote:
>> Just hit a:
>>
>> do_IRQ: stack overflow: 452
>>
>> on 32-bit CentOS 4 machine with xfs-kmod-0.4-2.el4.  Is there anything that can
>> be done to minimize this risk?  Running xfs over md raid5 array, exporting via
>> nfs.  More kernel dump messages are posted at:
>>
>> http://bugs.centos.org/view.php?id=3136
> 
> get an x86_64 machine ;)
> 
> The stack overflow message is misleading; it means you have 452 -left-
> 
> unfortunately on some kernels, simply printing that message actually
> consumes what's left, and more.  See http://lkml.org/lkml/2007/8/29/245
> 
> This was fixed in 2.6.18-108.el5 and beyond.

Oh, for RHEL^wCENTOS4 it was fixed in 2.6.9-78.8.EL and beyond.

-Eric

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^ permalink raw reply	[flat|nested] 3+ messages in thread

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2009-06-30 17:00 do_IRQ stack overflow on 32-bit CentOS 4 Orion Poplawski
2009-06-30 17:52 ` Eric Sandeen
2009-06-30 18:10   ` Eric Sandeen

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