From: Anton Blanchard <anton@samba.org>
To: Mark Haverkamp <markh@osdl.org>
Cc: "linuxppc64-dev@ozlabs.org" <linuxppc64-dev@ozlabs.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: iommu_alloc failure and panic
Date: Sat, 28 Jan 2006 12:19:48 +1100 [thread overview]
Message-ID: <20060128011948.GB17018@krispykreme> (raw)
In-Reply-To: <1138406447.11796.32.camel@markh3.pdx.osdl.net>
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
prev parent reply other threads:[~2006-01-29 9:11 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-27 16:57 Mark Haverkamp
2006-01-27 20:40 ` Olof Johansson
2006-01-27 22:39 ` Mark Haverkamp
2006-01-27 23:34 ` Olof Johansson
2006-01-27 23:37 ` Mark Haverkamp
2006-01-30 15:32 ` Mark Haverkamp
2006-01-30 23:13 ` Olof Johansson
2006-01-31 1:18 ` Doug Maxey
2006-01-31 13:41 ` James Smart
2006-01-31 21:33 ` Mark Haverkamp
2006-01-27 23:48 ` Anton Blanchard
2006-01-28 0:00 ` Mark Haverkamp
2006-01-28 1:19 ` Anton Blanchard [this message]
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