Re: [!GIT PULL] kdbus for 4.2

From: Richard Weinberger <richard@nod.at>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: David Herrmann <dh.herrmann@gmail.com>,
	Andy Lutomirski <luto@amacapital.net>,
	Tom Gundersen <teg@jklm.no>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Arnd Bergmann <arnd@arndb.de>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>,
	Jiri Kosina <jkosina@suse.cz>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Daniel Mack <daniel@zonque.org>,
	Djalal Harouni <tixxdz@opendz.org>
Subject: Re: [!GIT PULL] kdbus for 4.2
Date: Fri, 03 Jul 2015 18:22:42 +0200	[thread overview]
Message-ID: <5596B6D2.70008@nod.at> (raw)
In-Reply-To: <20150703152706.GA10626@kroah.com>

Am 03.07.2015 um 17:27 schrieb Greg Kroah-Hartman:
> On Fri, Jul 03, 2015 at 10:53:57AM +0200, Richard Weinberger wrote:
>> On Fri, Jul 3, 2015 at 10:43 AM, David Herrmann <dh.herrmann@gmail.com> wrote:
>>> Hi
>>>
>>> On Fri, Jul 3, 2015 at 2:39 AM, Andy Lutomirski <luto@amacapital.net> wrote:
>>>> Problem 1: Booting a kdbus-enabled kernel (CONFIG_KDBUS=y) causes gdm
>>>> to bail saying "oops, something went wrong" or whatever the useless
>>>> standard error message is.
>>>>
>>>> I can work around problem 1 by booting with kdbus=1, but that's not
>>>> okay.  Unless this is limited to just some narrow range of Rawhide
>>>> versions, I don't think the kernel gets to make changes that break
>>>> userspace like that.  Maybe this is a kernel issue, not a user issue,
>>>> in which case it's not a big deal as long as it gets fixed.
>>>
>>> You're saying booting with the same kernel but kdbus not compiled in works?
>>>
>>>> Problem 2: Running 'sudo mount /mnt/share' from a terminal hangs the
>>>> whole graphical session hard.  This is repeatable.  /mnt/share is
>>>> virtfs, but I doubt that matters.
>>>
>>> This is triggered by running through pam from outside the gfx-session
>>> but on a shared VT. It's not directly related to kdbus, though. It's
>>> fixed in systemd-git. As a workaround, you can remove pam_systemd from
>>> the sudo/su pam config.
>>
>> Just because I'm starring right now at similar issues, how can I run
>> systemd-git?
>> I fear to use a plain "make && make install" as I don't want to break my
>> distro's package management and I want to make sure that nothing from the
>> currently installed systemd influences the system.
> 
> Use your distro's package management system to build a new systemd
> package  based on just adding the single big patch diff from the last
> release to the git head, or pick individual ones.  But really, this
> isn't a kernel issue, you know how to build userspace distro packages...

I hoped some distros already offer such a package. Maybe Fedora?
Building packages is no fun nor trivial.

And IMHO this belongs here as systemd is the only user of kdbus and
kernel folks may want to give it a try.

Thanks,
//richard