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[Bug kprobes/2637] skipped probes in FC6
- From: "anil dot s dot keshavamurthy at intel dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 11 May 2006 17:01:05 -0000
- Subject: [Bug kprobes/2637] skipped probes in FC6
- References: <20060502201312.2637.hunt@redhat.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From anil dot s dot keshavamurthy at intel dot com 2006-05-11 17:01 -------
(In reply to comment #11)
> Subject: Re: skipped probes in FC6
> On Fri, 2006-05-05 at 21:33 +0000, anil dot s dot keshavamurth
> > Hence the right thing to do here is to catch that page_fault exceptions and
> > try fixing up the exceptions without falling back on do_page_fault() code
path.
> > With this simple fix, you would now experience any copy_from_user() calls
from
> > pre/post hanlder to fail if that page is not in memory.
> I agree. I have been looking into this and could use some help.
Martin, What exact help are you looking here? Are you worried failing of
copy_from_users() if the user pages are not in memory?
--
http://sourceware.org/bugzilla/show_bug.cgi?id=2637
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