From: Werner Almesberger <wa@almesberger.net>
To: BlaisorBlade <blaisorblade_spam@yahoo.it>
Cc: user-mode-linux-user@lists.sourceforge.net,
Gerd Knorr <kraxel@bytesex.org>,
user-mode-linux-devel@lists.sourceforge.net,
Lorenzo Colitti <lorenzo@colitti.com>,
Massimo Rimondini <rimondin@dia.uniroma3.it>
Subject: [uml-devel] Re: [uml-user] Host processes never terminate on 2.6.9rc3 host (stuck in ptrace_stop)
Date: Tue, 19 Oct 2004 02:00:55 -0300 [thread overview]
Message-ID: <20041019020055.A31791@almesberger.net> (raw)
In-Reply-To: <200410190023.14067.blaisorblade_spam@yahoo.it>; from blaisorblade_spam@yahoo.it on Tue, Oct 19, 2004 at 12:23:14AM +0200
BlaisorBlade wrote:
> Can you try using SIGCONT, please? Even the patch changelog clearly says that
> you must kill -CONT before kill -KILL
That looks like a race condition. If the process manages to enter
the same state again before you get to KILL it, even this "advanced"
kill is lost.
> (actually, a kill -CONT may make the process notice the SIGKILL),
That's what works so far, yes. I'm actually no quite certain what
this thread is about: it sounds as if this was a new problem, but
we've required CONT with KILL in some cases already for a long
time.
> Quite frankly, I do not know the question myself - but people
> seem to agree that this is a correct behaviour.
The odd thing is that a process that was ptraced but whose ptracer
is long dead *still* needs the CONT. That doesn't look right to me.
- Werner
--
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/ Werner Almesberger, Buenos Aires, Argentina wa@almesberger.net /
/_http://www.almesberger.net/____________________________________________/
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next prev parent reply other threads:[~2004-10-19 5:00 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4173F1FD.6080004@colitti.com>
[not found] ` <87d5zgrkm2.fsf@bytesex.org>
2004-10-18 19:18 ` [uml-devel] Re: [uml-user] Host processes never terminate on 2.6.9rc3 host (stuck in ptrace_stop) BlaisorBlade
2004-10-18 21:26 ` Gerd Knorr
2004-10-18 22:23 ` BlaisorBlade
2004-10-19 5:00 ` Werner Almesberger [this message]
2004-10-19 15:47 ` BlaisorBlade
2004-10-19 16:15 ` Werner Almesberger
2004-10-19 17:58 ` Gerd Knorr
2004-10-20 23:54 ` Michael Richardson
2004-10-21 7:57 ` Gerd Knorr
2004-10-19 6:59 ` Henrik Nordstrom
2004-10-19 7:26 ` Gerd Knorr
2004-10-19 8:47 ` Henrik Nordstrom
2004-10-19 9:04 ` Gerd Knorr
2004-10-19 7:18 ` Gerd Knorr
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