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From: "H. Peter Anvin" <hpa@zytor.com>
To: Jan Kratochvil <jan.kratochvil@redhat.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>,
	Roland McGrath <roland@hack.frob.com>,
	linux-kernel@vger.kernel.org, Oleg Nesterov <oleg@redhat.com>,
	Kushal Das <kdas@redhat.com>
Subject: Re: Extending coredump note section to contain filenames
Date: Mon, 12 Mar 2012 17:50:12 -0700	[thread overview]
Message-ID: <4F5E99C4.7060305@zytor.com> (raw)
In-Reply-To: <20120313004642.GA19090@host2.jankratochvil.net>

On 03/12/2012 05:46 PM, Jan Kratochvil wrote:
> On Tue, 13 Mar 2012 01:42:18 +0100, H. Peter Anvin wrote:
>> There is no 100% reliable solution possible -- you have no guarantee of
>> any kind that the library executable still exists.
> 
> I have guarantee that the library binary mapped in memory identified by
> build-id can be found out there in the could.  There is no other guarantee.
> And this guarantee fails with other solutions.
> 
> If you say that it is _additional_ info to build-id then yes, one can always
> use build-id if everything else fails.  But then the non-build-id information
> is redundant and it can just lead to wrong toolchain solutions - which has
> already happened (Apport).

You're thinking of a particular use case which isn't necessarily the
only one that matters.  It might be the only one that matters to *you*,
but that's very different to what matters to a developer, for example.

And yes of course the build-id should be included.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.


      reply	other threads:[~2012-03-13  0:50 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-03-09 17:13 Extending coredump note section to contain filenames Denys Vlasenko
2012-03-09 17:29 ` Jan Kratochvil
2012-03-12 12:05   ` Denys Vlasenko
2012-03-12 12:13     ` Denys Vlasenko
2012-03-12 16:53     ` Jan Kratochvil
2012-03-12 18:58       ` Denys Vlasenko
2012-03-12 19:08         ` Jan Kratochvil
2012-03-12 19:45           ` Denys Vlasenko
2012-03-12 22:07             ` Jan Kratochvil
2012-03-12 22:16             ` Jan Kratochvil
2012-03-13 12:12         ` Denys Vlasenko
2012-03-13 12:19           ` Jan Kratochvil
2012-03-12 22:21       ` H. Peter Anvin
2012-03-12 22:31         ` Jan Kratochvil
2012-03-13  0:16           ` H. Peter Anvin
2012-03-13  0:27             ` Jan Kratochvil
2012-03-13  0:31               ` H. Peter Anvin
2012-03-13  0:36                 ` Jan Kratochvil
2012-03-13  0:42                   ` H. Peter Anvin
2012-03-13  0:46                     ` Jan Kratochvil
2012-03-13  0:50                       ` H. Peter Anvin [this message]

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