linux-kernel - Re: [PATCH] pidns: reboot_pid_ns: use SEND_SIG_FORCED instead of force

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Message-ID: <20120416212606.GA27490@redhat.com>
Date:	Mon, 16 Apr 2012 23:26:06 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Serge Hallyn <serge.hallyn@...onical.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Daniel Lezcano <daniel.lezcano@...e.fr>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pidns: reboot_pid_ns: use SEND_SIG_FORCED instead of
	force_sig()

On 04/16, Serge Hallyn wrote:
>
> Quoting Oleg Nesterov (oleg@...hat.com):
> > On 04/16, Serge Hallyn wrote:
> > >
> > > Quoting Oleg Nesterov (oleg@...hat.com):
> > > >
> > > > Strange... I even tested this change, but only in the root namespace.
> > > > OK, thanks, I'll investigate. I hope you verified your kernel has
> > > > 629d362b commit ;)
> > >
> > > I took friday's HEAD of Linus tree.  All went fine.  Added this patch.
> > > The container can shutdown, but reboot causes shutdown.  Don't undersrtand
> > > why.
> >
> > Heh. This looks "impossible". I'd like to understand the reason.
> > So, LINUX_REBOOT_CMD_RESTART results in WIFSIGNALED() == SIGINT?
> >
> > OK, I'll try to test this patch in the non-root namespace.
>
> Playing with the test case below (based on the one Daniel submitted
> alongside his container reboot patches), it looks like
> WIFSIGNALED(status) and WTERMSIG(status) are 0 with this kernel, not
> 1 and sig.

Great, thanks Serge. I'll investigate and report tomorrow.

Oleg.

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