From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: viro@math.psu.edu (Alexander Viro)
Cc: alan@lxorguk.ukuu.org.uk (Alan Cox), kmacy@netapp.com (Kip Macy),
efeingold@mn.rr.com (Elan Feingold),
linux-kernel@vger.kernel.org
Subject: Re: Multithreaded core dumps
Date: Thu, 30 Aug 2001 10:12:49 +0100 (BST) [thread overview]
Message-ID: <E15cNsX-0000m7-00@the-village.bc.nu> (raw)
In-Reply-To: <Pine.GSO.4.21.0108300457270.9879-100000@weyl.math.psu.edu> from "Alexander Viro" at Aug 30, 2001 05:03:59 AM
> > The 2.4-ac tree supports dumping core.$pid for the threads that actually
> > died
>
> ... and these dumps are not reliable. Living thread may modify the
> contents of dump as it's being written out. I.e. you are getting
> false alarms - inconsistent data that was never there.
That is mathematically insoluble. Think about an SMP system, you cannot stop
the other thread in instantaneously small time
Alan
next prev parent reply other threads:[~2001-08-30 9:10 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-30 5:21 Multithreaded core dumps Elan Feingold
2001-08-30 5:50 ` Kip Macy
2001-08-30 8:24 ` Alan Cox
2001-08-30 9:03 ` Alexander Viro
2001-08-30 9:12 ` Alan Cox [this message]
2001-08-30 10:08 ` Alexander Viro
2001-08-30 9:33 ` David S. Miller
2001-08-30 8:16 ` Multithreaded core dumps (CLONE_THREAD and elf) Terje Eggestad
2001-08-30 9:19 ` Andreas Dilger
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