Re: [Valgrind-users] Problems with valgrind after a fork() and starting a container

[Vallevand, M. K <Mar...@UN...>]

I tried that option.  Doesn’t help.
I was afraid that it would be what Tom said.  [Theatrical sigh]
I have a couple of choices, I guess.  Find out why valgrind and lxc aren’t working together and fix that.  Or, do some kind of exec() outside of lxc.
The lxc_start() that is being called is a kind of exec(), I guess.  It creates a new set of namespaces and does a clone() and exec() in them.  That is where is it failing.  I’m trying to get a log file with more details.  There might be a chance to figure this out.

Regards.
Mark K Vallevand
"If there are no dogs in Heaven, then when I die I want to go where they went."
-Will Rogers

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From: Alan Copy [mailto:ala...@gm...]
Sent: Thursday, September 25, 2014 06:51 AM
To: Tom Hughes
Cc: Vallevand, Mark K; val...@li...
Subject: Re: [Valgrind-users] Problems with valgrind after a fork() and starting a container

hi,

Tom is right you can detach if you don't use exec but i think you can silent child output using --child-silent-after-fork=no
Alan

2014-09-24 23:45 GMT+02:00 Tom Hughes <to...@co...<mailto:to...@co...>>:
On 24/09/14 22:04, Vallevand, Mark K wrote:

> We don’t care about valgrind in the child process.  We need to get the
> child to detach from valgrind before it calls the lxc library.
>
> So, how can this be done?

It can't - valgrind is a fundamental part of the process and the only
way to get rid of it is to exec into a different binary.

Tom

--
Tom Hughes (to...@co...<mailto:to...@co...>)
http://compton.nu/

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