From: Arnd Bergmann <arnd.bergmann@de.ibm.com>
To: linuxppc-dev@ozlabs.org
Subject: Re: Unable to handle kernel paging request in show_instructions
Date: Tue, 20 Jun 2006 02:44:49 +0200 [thread overview]
Message-ID: <200606200244.49532.arnd.bergmann@de.ibm.com> (raw)
In-Reply-To: <4497445F.50700@us.ibm.com>
On Tuesday 20 June 2006 02:42, David Wilder wrote:
> But in this case the validation passes even though the address is
> invalid. Any ideas how to fix this? Is there a easy way to validate
> if a page is valid before accessing it?
The check that kallsyms_lookup does should find this, but it may
be overkill to call that function just to verify an address.
You might also have success calling vmalloc_to_page for a 0xd000...
address to check if that is really mapped.
Arnd <><
next prev parent reply other threads:[~2006-06-20 0:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-20 0:42 Unable to handle kernel paging request in show_instructions David Wilder
2006-06-20 0:44 ` Arnd Bergmann [this message]
2006-06-20 13:47 ` Anton Blanchard
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