From: Mark Wielaard <mark@klomp.org>
To: Phil Muldoon <pmuldoon@redhat.com>
Cc: Frysk Hackers <frysk@sourceware.org>
Subject: Re: [stack] segment only corefiles, and [vdso]
Date: Tue, 26 Feb 2008 16:16:00 -0000 [thread overview]
Message-ID: <1204042576.3487.68.camel@dijkstra.wildebeest.org> (raw)
In-Reply-To: <47C437B1.3000507@redhat.com>
Hi Phil,
On Tue, 2008-02-26 at 16:00 +0000, Phil Muldoon wrote:
> Mark Wielaard wrote:
> > On Tue, 2008-02-26 at 15:19 +0000, Phil Muldoon wrote:
> >> When I implemented that experimental feature, I only included the
> >> [stack] segment. However on IA32, there is always a visit to the [vdso]
> >> segment which I did not include.
> >
> > What is the visit from/for?
>
> Well it appears to happen on every IA32 process. Why/to ... not terribly
> sure other than every process/corefile seems to include a visit there.
> just fstack a 32 bit process.
I assume this is when you fstack a process that was stuck inside a
system call and it tries to do a symbol lookup? I don't know why that
would be x86 specific. But I assume you must include [vdso] because it
isn't available any other way (and even if it was on the system, then
you might be fstacking a core file that comes from a different system
that has a different vsdo layout).
Cheers,
Mark
next prev parent reply other threads:[~2008-02-26 16:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-26 15:19 Phil Muldoon
2008-02-26 15:57 ` Mark Wielaard
2008-02-26 16:01 ` Phil Muldoon
2008-02-26 16:16 ` Mark Wielaard [this message]
2008-02-26 16:49 ` Phil Muldoon
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=1204042576.3487.68.camel@dijkstra.wildebeest.org \
--to=mark@klomp.org \
--cc=frysk@sourceware.org \
--cc=pmuldoon@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).