From: fche@redhat.com (Frank Ch. Eigler)
To: systemtap@sources.redhat.com
Subject: Re: [PATCH] Kprobes- robust fault handling for i386
Date: Thu, 23 Feb 2006 12:40:00 -0000 [thread overview]
Message-ID: <y0m7j7mdzae.fsf@ton.toronto.redhat.com> (raw)
In-Reply-To: <20060223085935.GA2473@in.ibm.com>
Prasanna S Panchamukhi <prasanna@in.ibm.com> writes:
> [...] As of now to fix the broken kprobes fault handling, here is the
> patch. This is only for i386, once we freeze on this prototype, this
> can be ported to other architectures.
>
> This patch provides proper kprobes fault handling, if a user-specified
> pre/post handlers tries to access user address space, through
> copy_from_user(), get_user() etc. [...]
Is it correct that this patch enables only the first bullet in
<http://sources.redhat.com/ml/systemtap/2006-q1/msg00536.html>?
By the way, just for laughs, I tried systemtap on a hugemem x86
kernel. As probably expected, none of the user-space copy operations
worked: in fact, many "succeeded" and returned null data.
- FChE
next prev parent reply other threads:[~2006-02-23 12:40 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-22 10:41 Mao, Bibo
2006-02-23 8:58 ` Prasanna S Panchamukhi
2006-02-23 12:40 ` Frank Ch. Eigler [this message]
2006-02-23 13:17 ` Prasanna S Panchamukhi
-- strict thread matches above, loose matches on Subject: below --
2006-02-24 19:17 Keshavamurthy, Anil S
2006-02-27 9:24 ` Prasanna S Panchamukhi
2006-02-28 1:02 ` Keshavamurthy Anil S
2006-02-28 14:37 ` Prasanna S Panchamukhi
2006-02-28 20:25 ` Keshavamurthy Anil S
2006-03-01 14:49 ` Prasanna S Panchamukhi
2006-02-23 0:44 Keshavamurthy, Anil S
2006-02-22 7:11 Prasanna S Panchamukhi
2006-02-24 1:33 ` Jim Keniston
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=y0m7j7mdzae.fsf@ton.toronto.redhat.com \
--to=fche@redhat.com \
--cc=systemtap@sources.redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).