lkml.org 
[lkml]   [2006]   [Jan]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: iommu_alloc failure and panic

Hi,

> It looks like they are already on:
>
> CONFIG_DEBUG_STACKOVERFLOW=y
> CONFIG_DEBUG_STACK_USAGE=y

You could try bumping the limit for the warning in
arch/powerpc/kernel/irq.c

if (unlikely(sp < (sizeof(struct thread_info) + 2048)))

Change it to 4096.

Unfortunately if the long call chain is in an interrupt disabled area
you will not get warned.

> The machine is frozen after the panic.

You can do it sometime before the hang to see if you are getting close
to overflowing the stack.

Anton
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-01-29 10:14    [W:0.034 / U:0.752 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site