linux-kernel - Re: Testing lxc 0.6.5 in Fedora 13

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Message-ID: <20100326134709.GB15790@redhat.com>
Date:	Fri, 26 Mar 2010 14:47:09 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Grzegorz Nosek <root@...aldomain.pl>
Cc:	Matt Helsley <matthltc@...ibm.com>,
	Roland McGrath <roland@...hat.com>,
	Sukadev Bhattiprolu <sukadev@...ibm.com>,
	containers@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: Testing lxc 0.6.5 in Fedora 13

On 03/26, Grzegorz Nosek wrote:
>
> Hmm, is there a good reason why strace does not use the data explicitly
> provided by the kernel but instead second-guesses it from syscall return
> values? I don't know anything about ptrace, really,

I know almost nothing too. But _iirc_, this all is even worse, strace
doesn't necessary gets the notification from do_fork(), at least
another quick grep shows it doesn't use PTRACE_O_TRACEFORK.

This is another reason why the change in do_fork() can't really help
right now.

Oleg.

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