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From: Dmitry Vyukov <dvyukov@google.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Joel Fernandes <joelaf@google.com>,
	Barret Rhoden <brho@google.com>,
	ksummit <ksummit-discuss@lists.linuxfoundation.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jonathan Nieder <jrn@google.com>,
	Tomasz Figa <tfiga@chromium.org>,
	Han-Wen Nienhuys <hanwen@google.com>,
	Theodore Tso <tytso@google.com>,
	David Rientjes <rientjes@google.com>,
	Dmitry Torokhov <dtor@chromium.org>
Subject: Re: [Ksummit-discuss] Allowing something Change-Id (or something like it) in kernel commits
Date: Tue, 27 Aug 2019 06:24:36 -0700
Message-ID: <CACT4Y+a2E9FBba4f2iEmQKzO=gNe0cdyW+Pqq8YyiMaOTOu3fg@mail.gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.21.1908270806060.1939@nanos.tec.linutronix.de>

On Mon, Aug 26, 2019 at 11:06 PM Thomas Gleixner <tglx@linutronix.de> wrote:
>
> On Mon, 26 Aug 2019, Dmitry Vyukov wrote:
> > A somewhat related point re UUID/Change-ID.
> > For syzbot (or any other bug tracking system) we want to associate
> > bugs with fixes. It turned out there is no good identity of a change
> > that we could use. Commit hash is an obvious first thing to consider,
> > but (1) it changes in linux-next, (2) sometimes the change is not
> > committed yet when we do the association, (3) it is different when
> > backported to LTS (so not possible to say if a fix is in that stable
> > tree or not).
> > We decided to use commit subject, which works to some degree, but also
> > has problems: (1) not necessary unique, (2) sometimes people change
> > subject during backporting (e.g. prepend some prefix), (3) has all the
> > same problems of email clients messing with text (e.g. I can't issue
> > #syz fix command for loo long commit subjects with my email client).
> > Some real UUID/Change-ID would solve all of these problems by giving
> > us capability to refer to changes rather than a commit in a particular
> > tree only.
>
> If we adopt the Link: ..../$MSG tag widely then you have a UUID.

Is there a way to ensure that everybody will generate right IDs
(ChangeID-Version) and then a link in canonical form will be included
into commit? As far as I understand this is not possible with the
current kernel tooling, as this aspect is not under control of any
unified tooling.
I see different maintainers use links to different archive web sites.
Also sometimes Link is present for other reasons (e.g. link to bug
report).
The link will need to be added by every developer (rather than
maintainer) so that it's available before the change is committed
anywhere.
Though, most of these are problems for any other change identification scheme...

  reply index

Thread overview: 105+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-22 23:39 Doug Anderson
2019-08-23  0:03 ` Brendan Higgins
2019-08-23  0:17 ` Linus Torvalds
2019-08-23  0:30   ` Olof Johansson
2019-08-23  0:43     ` Guenter Roeck
2019-08-23  0:45       ` Olof Johansson
2019-08-23  1:05         ` Olof Johansson
2019-08-23  1:09           ` Dmitry Torokhov
2019-08-23  1:36         ` Theodore Y. Ts'o
2019-08-23  2:58           ` Linus Torvalds
2019-08-23  3:03             ` Linus Torvalds
2019-08-23 13:15               ` Sean Paul
2019-08-23 15:18                 ` Theodore Y. Ts'o
2019-08-23 15:31                   ` Sean Paul
2019-08-23 15:48                     ` Thomas Gleixner
2019-08-23 16:19                       ` Dmitry Torokhov
2019-08-23 16:35                         ` Joel Fernandes
2019-08-23 16:45                           ` Doug Anderson
2019-08-23 16:54                             ` Joel Fernandes
2019-08-23 18:00                               ` Doug Anderson
2019-08-23 19:08                                 ` Joel Fernandes
2019-08-23 19:15                                   ` Joel Fernandes
2019-08-23 19:23                                     ` Thomas Gleixner
2019-08-23 19:31                                       ` Joel Fernandes
2019-08-24 16:53                                   ` Doug Anderson
2019-08-23 16:46                           ` Dmitry Torokhov
2019-08-23 19:17                             ` Thomas Gleixner
2019-08-23 19:38                               ` Laurent Pinchart
2019-08-23 21:15                                 ` Thomas Gleixner
2019-08-23 21:25                                   ` Mark Brown
2019-08-24 23:13                                   ` Theodore Y. Ts'o
2019-08-25  7:09                                     ` Thomas Gleixner
2019-08-26 22:05                                       ` Thomas Gleixner
2019-08-28  8:50                                         ` Thomas Gleixner
2019-08-23 20:02                               ` Christian Brauner
2019-08-24 16:34                                 ` Doug Anderson
2019-08-24 18:11                                   ` Linus Torvalds
2019-08-24 23:04                                     ` Theodore Y. Ts'o
2019-08-25  3:11                                       ` Greg Kroah-Hartman
2019-08-27 10:51                                         ` Mark Brown
2019-09-09  8:14                                           ` Michael Ellerman
2019-09-09 12:09                                             ` Mark Brown
2019-08-26 17:13                                     ` Doug Anderson
2019-08-26 17:30                                       ` Joel Fernandes
2019-08-26 21:35                                         ` Doug Anderson
2019-08-26 21:51                                           ` Thomas Gleixner
2019-08-26 22:06                                             ` Doug Anderson
2019-08-26 22:19                                               ` Thomas Gleixner
2019-08-26 23:02                                           ` Theodore Y. Ts'o
2019-08-26 23:11                                             ` Doug Anderson
2019-09-16 14:11                                               ` Christian Brauner
2019-09-16 17:43                                               ` Al Viro
2019-09-16 18:05                                                 ` Doug Anderson
2019-08-26 23:43                                             ` Thomas Gleixner
2019-08-28 12:34                                               ` Christian Brauner
2019-08-27  0:29                                             ` Dmitry Vyukov
2019-08-27  6:06                                               ` Thomas Gleixner
2019-08-27 13:24                                                 ` Dmitry Vyukov [this message]
2019-08-27 13:48                                                   ` Greg Kroah-Hartman
2019-08-27 14:01                                                     ` Guenter Roeck
2019-08-27 14:09                                                       ` Thomas Gleixner
2019-08-27 15:33                                                         ` Greg Kroah-Hartman
2019-08-27 15:42                                                           ` Thomas Gleixner
2019-08-27 18:55                                                           ` Konstantin Ryabitsev
2019-08-27 19:53                                                             ` Greg Kroah-Hartman
2019-08-27 21:34                                                               ` Joel Fernandes
2019-08-27 21:38                                                                 ` Joel Fernandes
2019-08-28  9:08                                                                 ` Greg Kroah-Hartman
2019-08-28  9:25                                                                   ` Jani Nikula
2019-08-28 10:04                                                                   ` Martin K. Petersen
2019-08-28 10:53                                                                     ` Thomas Gleixner
2019-08-28 12:46                                                                       ` Martin K. Petersen
2019-08-28 10:42                                                                   ` Mark Brown
2019-08-28 11:41                                                                     ` Greg Kroah-Hartman
2019-08-28 12:22                                                                   ` Christian Brauner
2019-08-28 12:38                                                                   ` Joel Fernandes
2019-08-28 13:58                                                                     ` Theodore Y. Ts'o
2019-08-28 20:39                                                                       ` Doug Anderson
2019-08-28 20:46                                                                         ` Johannes Berg
2019-08-28 21:00                                                                           ` Doug Anderson
2019-08-28 22:15                                                                         ` Rob Herring
2019-08-27 17:34                                                       ` Geert Uytterhoeven
2019-08-27 18:50                                                         ` Guenter Roeck
2019-08-27 14:06                                                   ` Thomas Gleixner
2019-08-27  7:33                                               ` Geert Uytterhoeven
2019-08-27 13:30                                                 ` Dmitry Vyukov
2019-08-27 14:28                                                   ` Paul E. McKenney
2019-08-27 15:06                                                     ` Thomas Gleixner
2019-08-27 15:25                                                       ` Paul E. McKenney
2019-08-28  8:57                                                         ` Dan Carpenter
2019-08-23 15:49                     ` Doug Anderson
2019-08-23 15:54                       ` Thomas Gleixner
2019-08-23 15:59                         ` Thomas Gleixner
2019-08-23 16:38                           ` Doug Anderson
2019-08-23 16:50                             ` Andrew Lunn
2019-08-23 17:50                               ` Doug Anderson
2019-08-23 18:10               ` Konstantin Ryabitsev
2019-08-26 22:19               ` Paul Mackerras
2019-08-27  7:02                 ` Stephen Rothwell
2019-08-23  9:09             ` Vlastimil Babka
2019-08-23 12:48               ` Bhaskar Chowdhury
2019-08-23  1:01   ` Dmitry Torokhov
2019-08-23  1:07   ` Doug Anderson
2019-08-23  1:18     ` Joel Fernandes
2019-09-05  8:12 ` Eric Wong

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