From: Phil Muldoon <pmuldoon@redhat.com>
To: Mark Wielaard <mark@klomp.org>
Cc: Frysk Hackers <frysk@sourceware.org>
Subject: Re: [stack] segment only corefiles, and [vdso]
Date: Tue, 26 Feb 2008 16:49:00 -0000 [thread overview]
Message-ID: <47C442F0.2090908@redhat.com> (raw)
In-Reply-To: <1204042576.3487.68.camel@dijkstra.wildebeest.org>
Mark Wielaard wrote:
> Hi Phil,
>
>
> 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.
It's not a very scientific statement on my behalf, just that I only
observe it on IA32 not on x8664. Sorry should have qualified that up front.
> 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).
>
>
Right so --stackonly should include [vdso] then to make the corefile
back trace workable. Strictly speaking we're breaking the contract
there, but oh well.
I think I will replace that (--stack only) option with a regex option
dump instead. For example:
--regex="(heap\|stack\|vdso)"
or something.
Phil
> Cheers,
>
> Mark
>
>
prev parent reply other threads:[~2008-02-26 16:49 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
2008-02-26 16:49 ` Phil Muldoon [this message]
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