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From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: Jiri Kosina <jikos@kernel.org>, Greg KH <greg@kroah.com>
Cc: Trond Myklebust <trondmy@primarydata.com>,
	ksummit-discuss@lists.linuxfoundation.org
Subject: Re: [Ksummit-discuss] [CORE TOPIC] stable workflow
Date: Wed, 03 Aug 2016 09:57:38 -0400	[thread overview]
Message-ID: <1470232658.2482.42.camel@HansenPartnership.com> (raw)
In-Reply-To: <alpine.LNX.2.00.1608031537140.22028@cbobk.fhfr.pm>

On Wed, 2016-08-03 at 15:48 +0200, Jiri Kosina wrote:
> On Wed, 3 Aug 2016, Greg KH wrote:
> 
> > Real examples from now on please, if there are problems in the 
> > stable workflow that we have today, everyone needs to show it with
> > examples, I'm tired of seeing mental gymnastics around stable 
> > kernels just because it is "fun".
> 
> Let me pick an example I personally had a lot of issues quite some 
> time ago:
> 
> 	https://lkml.org/lkml/2013/4/22/259
> 
> This was a patch that got added to -stable to fix a problem that 
> didn't exist there. It caused system bustage almost immediately, 
> which indicates that very limited testing has been done prior to
> releasing the patch.
> 
> I believe that patches like this should really be caught during 
> -stable review; anyone familiar with the VFS code and actually 
> looking at the patch would notice immediately that it's fixing a bug 
> that doesn't exist in the code at all in the first place; that seems 
> to indicate that noone has actually explicitly reviewed it for 
> -stable, and therefore it's questionable whether it should have been
> applied.

This isn't a viable approach.  Firstly stable review is less thorough
than upstream review because the review mostly goes "yes, I already
reviewed this in upstream".  Secondly, if the upstream review didn't
catch the problems why would we suddenly catch them in a stable review?

The fact that possibly no-one reviewed the upstream patch indicates the
need for a better upstream process (so something like we now have in
SCSI which is no patches applied without one review tag), but expecting
stable to fix our upstream process isn't going to work.

James

  reply	other threads:[~2016-08-03 13:57 UTC|newest]

Thread overview: 259+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-08 22:35 Jiri Kosina
2016-07-08 23:12 ` Guenter Roeck
2016-07-08 23:38   ` Luck, Tony
2016-07-09  8:34     ` Jiri Kosina
2016-07-09  8:58       ` Guenter Roeck
2016-07-09  9:29       ` Johannes Berg
2016-07-09 15:19         ` Jason Cooper
2016-07-09 16:04           ` Guenter Roeck
2016-07-09 19:15         ` Vlastimil Babka
2016-08-01  9:32           ` Johannes Berg
2016-08-01 11:10             ` Vlastimil Babka
2016-07-09 18:39       ` Andrew Lunn
2016-07-10  1:22       ` Rafael J. Wysocki
2016-07-08 23:52   ` Rafael J. Wysocki
2016-07-09  0:06     ` Dmitry Torokhov
2016-07-09  8:37       ` Jiri Kosina
2016-07-09  9:12         ` Mark Brown
2016-07-09  0:10   ` Dmitry Torokhov
2016-07-09  0:37     ` Rafael J. Wysocki
2016-07-09  0:43       ` Dmitry Torokhov
2016-07-09  1:53         ` Guenter Roeck
2016-07-09 10:05         ` James Bottomley
2016-07-09 15:49           ` Trond Myklebust
2016-07-09 22:41             ` Dan Williams
2016-07-10  1:34             ` James Bottomley
2016-07-10  1:43               ` Trond Myklebust
2016-07-10  1:56                 ` James Bottomley
2016-07-10  2:12                   ` Trond Myklebust
2016-07-10  2:15                   ` Rafael J. Wysocki
2016-07-10  3:00                     ` James Bottomley
2016-07-10  3:07                       ` Trond Myklebust
2016-07-26 13:35                       ` David Woodhouse
2016-07-26 13:44                         ` Guenter Roeck
2016-07-26 14:33                           ` David Woodhouse
2016-07-26 15:52                             ` Guenter Roeck
2016-07-28 21:02                             ` Laurent Pinchart
2016-07-29  0:10                               ` Steven Rostedt
2016-07-29  8:59                                 ` Laurent Pinchart
2016-07-29 14:28                                   ` Steven Rostedt
2016-08-01 13:53                                     ` Shuah Khan
2016-08-03  4:47                                       ` Bird, Timothy
2016-07-29 15:12                                   ` Mark Brown
2016-07-29 15:20                                     ` Steven Rostedt
2016-07-29 15:50                                       ` Mark Brown
2016-07-29 16:06                                         ` Steven Rostedt
2016-07-29 16:48                                           ` Mark Brown
2016-07-29 17:02                                             ` Steven Rostedt
2016-07-29 21:07                                               ` Alexandre Belloni
2016-07-29 21:40                                                 ` Steven Rostedt
2016-08-01 13:41                                                   ` Laurent Pinchart
2016-07-30 16:19                                               ` Luis R. Rodriguez
2016-08-01 13:35                                     ` Laurent Pinchart
2016-08-01 14:24                                       ` Mark Brown
2016-08-02 14:12                       ` Jani Nikula
2016-08-02 15:34                         ` Mark Brown
2016-08-02 23:17                           ` Rafael J. Wysocki
2016-08-03  9:36                             ` Jani Nikula
2016-08-03 11:09                               ` Greg KH
2016-08-03 13:05                                 ` Jani Nikula
2016-08-03 13:26                                   ` Greg KH
2016-08-03 13:48                                     ` Jiri Kosina
2016-08-03 13:57                                       ` James Bottomley [this message]
2016-08-03 13:59                                         ` Jiri Kosina
2016-08-03 14:04                                           ` James Bottomley
2016-08-03 14:10                                             ` Jiri Kosina
2016-08-04  1:23                                             ` Steven Rostedt
2016-08-04  8:20                                               ` Greg KH
2016-08-04 13:33                                                 ` Steven Rostedt
2016-08-04 15:32                                                   ` Takashi Iwai
2016-08-04 15:40                                                     ` Steven Rostedt
2016-08-04 15:47                                                     ` Jiri Kosina
2016-08-04 16:18                                                       ` Takashi Iwai
2016-08-04 16:26                                                         ` Steven Rostedt
2016-08-04 15:44                                                   ` Mark Brown
2016-08-04 15:56                                                     ` James Bottomley
2016-08-04 17:01                                                       ` Mark Brown
2016-08-04 17:11                                                         ` Steven Rostedt
2016-08-04 17:53                                                           ` Mark Brown
2016-08-05  8:16                                                           ` Jani Nikula
2016-08-04 16:14                                                     ` Steven Rostedt
2016-08-04 17:51                                                       ` Mark Brown
2016-08-04 18:16                                                       ` Geert Uytterhoeven
2016-08-04 18:44                                                         ` Steven Rostedt
2016-08-04 18:48                                                           ` Geert Uytterhoeven
2016-08-04 19:06                                                             ` Mark Brown
2016-08-04 18:52                                                           ` Laurent Pinchart
2016-08-04 19:30                                                             ` Steven Rostedt
2016-08-03 14:45                                         ` Mark Brown
2016-08-04 13:48                                         ` Geert Uytterhoeven
2016-08-03 14:19                                       ` Greg KH
2016-08-03 14:45                                         ` Jiri Kosina
2016-08-03 15:48                                           ` Guenter Roeck
2016-08-03 16:12                                             ` Dmitry Torokhov
2016-08-03 16:44                                               ` Guenter Roeck
2016-08-03 17:20                                                 ` Dmitry Torokhov
2016-08-03 18:21                                                   ` Guenter Roeck
2016-08-03 18:59                                                     ` Dmitry Torokhov
2016-08-03 21:25                                                       ` Jiri Kosina
2016-08-03 21:31                                                         ` Dmitry Torokhov
2016-08-03 21:36                                                           ` Jiri Kosina
2016-08-04  3:06                                                             ` Steven Rostedt
2016-08-03 22:25                                                           ` Guenter Roeck
2016-08-04 14:02                                                         ` Jan Kara
2016-08-03 18:57                                                 ` Jiri Kosina
2016-08-03 22:16                                                   ` Guenter Roeck
2016-08-04  3:14                                               ` Steven Rostedt
2016-08-04  3:32                                                 ` Dmitry Torokhov
2016-08-04  4:05                                                   ` Steven Rostedt
2016-08-04  8:27                                               ` Greg KH
2016-08-04  8:21                                             ` Greg KH
2016-08-05  4:46                                             ` Jonathan Cameron
2016-08-03 14:12                                     ` Jani Nikula
2016-08-03 14:33                                       ` Daniel Vetter
2016-08-03 13:20                                 ` Rafael J. Wysocki
2016-08-03 13:21                                   ` Jiri Kosina
2016-08-04  1:05                                     ` Rafael J. Wysocki
2016-08-03 13:39                                   ` Greg KH
2016-08-03 14:10                                     ` Chris Mason
2016-08-04  0:37                                     ` Rafael J. Wysocki
2016-08-03 15:47                                 ` Guenter Roeck
2016-08-04  8:25                                   ` Greg KH
2016-08-03 11:12                               ` Mark Brown
2016-07-10  2:27                   ` Dan Williams
2016-07-10  6:10                     ` Guenter Roeck
2016-07-11  4:03                     ` [Ksummit-discuss] [CORE TOPIC] kernel unit testing Trond Myklebust
2016-07-11  4:22                       ` James Bottomley
2016-07-11  4:30                         ` Trond Myklebust
2016-07-11  5:23                       ` Guenter Roeck
2016-07-11  8:56                         ` Hannes Reinecke
2016-07-11 16:20                         ` Mark Brown
2016-07-11 19:58                       ` Dan Williams
2016-07-12  9:35                         ` Jan Kara
2016-07-13  4:56                           ` Dan Williams
2016-07-13  9:04                             ` Jan Kara
2016-07-11 20:24                       ` Kevin Hilman
2016-07-11 23:03                         ` Guenter Roeck
2016-07-18  7:44                           ` Christian Borntraeger
2016-07-18  8:44                             ` Hannes Reinecke
2016-07-28 21:09                         ` Laurent Pinchart
2016-07-28 21:33                           ` Bird, Timothy
2016-08-02 18:42                           ` Kevin Hilman
2016-08-02 19:44                             ` Laurent Pinchart
2016-08-02 20:33                               ` Mark Brown
2016-07-13  4:48                       ` Alex Shi
2016-07-13  9:07                         ` Greg KH
2016-07-13 12:37                           ` Alex Shi
2016-07-13 19:59                             ` Olof Johansson
2016-07-13 22:23                               ` Alex Shi
2016-07-14  1:19                             ` Greg KH
2016-07-14  9:48                               ` Alex Shi
2016-07-14  9:54                                 ` Ard Biesheuvel
2016-07-14 14:13                                   ` Alex Shi
2016-07-13 14:34                           ` Mark Brown
2016-07-14  3:17                             ` Greg KH
2016-07-14 10:06                               ` Mark Brown
2016-07-15  0:22                                 ` Greg KH
2016-07-15  0:51                                   ` Guenter Roeck
2016-07-15  1:41                                     ` Greg KH
2016-07-15  2:56                                       ` Guenter Roeck
2016-07-15  4:29                                         ` Greg KH
2016-07-15  5:52                                           ` NeilBrown
2016-07-15  6:14                                             ` Greg KH
2016-07-15  7:02                                               ` Jiri Kosina
2016-07-15 11:42                                                 ` Greg KH
2016-07-15 11:47                                                   ` Jiri Kosina
2016-07-15 12:17                                                   ` Geert Uytterhoeven
2016-07-15  6:19                                             ` Rik van Riel
2016-07-15 12:17                                               ` Mark Brown
2016-07-26 13:45                                                 ` David Woodhouse
2016-07-15  6:32                                             ` James Bottomley
2016-07-15  7:01                                               ` NeilBrown
2016-07-15  7:28                                                 ` James Bottomley
2016-07-15  7:36                                                 ` Dmitry Torokhov
2016-07-15  9:29                                                   ` NeilBrown
2016-07-15 16:08                                                     ` Dmitry Torokhov
2016-07-15 11:05                                               ` Geert Uytterhoeven
2016-07-15 12:35                                                 ` James Bottomley
2016-07-15 12:44                                                   ` Geert Uytterhoeven
2016-07-15 11:24                                             ` Vlastimil Babka
2016-07-28 22:07                                               ` Laurent Pinchart
2016-07-21  7:13                                           ` Daniel Vetter
2016-07-21  7:44                                             ` Josh Triplett
2016-07-15 11:10                                     ` Mark Brown
2016-07-15 11:40                                       ` Greg KH
2016-07-15 12:38                                         ` Mark Brown
2016-07-10  2:07                 ` [Ksummit-discuss] [CORE TOPIC] stable workflow Rafael J. Wysocki
2016-07-10  6:19               ` Olof Johansson
2016-07-10 14:42                 ` Theodore Ts'o
2016-07-11  1:18                   ` Olof Johansson
2016-07-10  7:29           ` Takashi Iwai
2016-07-10 10:20             ` Jiri Kosina
2016-07-10 13:33               ` Guenter Roeck
2016-07-15  9:27                 ` Zefan Li
2016-07-15 13:52                   ` Guenter Roeck
2016-07-26 13:08           ` David Woodhouse
2016-07-10  7:37     ` Takashi Iwai
2016-07-09  0:06 ` Jason Cooper
2016-07-09  0:42   ` James Bottomley
2016-07-09  8:43     ` Jiri Kosina
2016-07-09  9:36       ` Mark Brown
2016-07-09 15:13         ` Guenter Roeck
2016-07-09 19:40           ` Sudip Mukherjee
2016-07-11  8:14             ` Jiri Kosina
2016-07-09 21:21           ` Theodore Ts'o
2016-07-11 15:13             ` Mark Brown
2016-07-11 17:03               ` Theodore Ts'o
2016-07-11 17:07                 ` Justin Forbes
2016-07-11 17:11                 ` Mark Brown
2016-07-11 17:13                   ` Olof Johansson
2016-07-11 17:17                     ` Mark Brown
2016-07-11 17:24                       ` Guenter Roeck
2016-07-11 17:44                         ` Mark Brown
2016-07-13  1:08                   ` Geert Uytterhoeven
2016-07-11 17:15                 ` Dmitry Torokhov
2016-07-11 17:20                   ` Theodore Ts'o
2016-07-11 17:26                     ` Dmitry Torokhov
2016-07-11 17:27                     ` Olof Johansson
2016-07-11 23:13                   ` Guenter Roeck
2016-07-11 17:17                 ` Josh Boyer
2016-07-11 22:42                 ` James Bottomley
2016-07-20 17:50                 ` Stephen Hemminger
2016-07-11  8:18           ` Jiri Kosina
2016-07-11 23:32             ` Guenter Roeck
2016-07-11 14:22           ` Mark Brown
2016-07-10 16:22         ` Vinod Koul
2016-07-10 17:01           ` Theodore Ts'o
2016-07-10 18:28             ` Guenter Roeck
2016-07-10 22:38               ` Rafael J. Wysocki
2016-07-11  8:47                 ` Jiri Kosina
2016-07-27  3:19                 ` Steven Rostedt
2016-07-10 22:39               ` Theodore Ts'o
2016-07-11  1:12                 ` Olof Johansson
2016-07-11  5:00             ` Vinod Koul
2016-07-11  5:13               ` Theodore Ts'o
2016-07-11 10:57                 ` Luis de Bethencourt
2016-07-11 14:18                 ` Vinod Koul
2016-07-11 17:34                   ` Guenter Roeck
2016-07-27  3:12                   ` Steven Rostedt
2016-07-27  4:36                     ` Vinod Koul
2016-07-09 14:57     ` Jason Cooper
2016-07-09 22:51       ` Jonathan Corbet
2016-07-10  7:21 ` Takashi Iwai
2016-07-11  7:44 ` Christian Borntraeger
2016-08-02 13:49 ` Jani Nikula
  -- strict thread matches above, loose matches on Subject: below --
2014-05-02 19:42 Jiri Kosina
2014-05-02 19:43 ` Josh Boyer
2014-05-02 20:09 ` Steven Rostedt
2014-05-02 20:12   ` Jiri Kosina
2014-05-02 20:22     ` Josh Boyer
2014-05-02 20:27     ` Steven Rostedt
2014-05-02 20:30       ` Jiri Kosina
2014-05-03 15:20       ` Greg Kroah-Hartman
2014-05-03 15:40       ` Greg Kroah-Hartman
2014-05-02 22:16     ` Jan Kara
2014-05-02 20:33 ` Ben Hutchings
2014-05-02 20:51 ` Paul E. McKenney
2014-05-02 20:57 ` Mark Brown
2014-05-02 23:35   ` Guenter Roeck
2014-05-03 15:22 ` Greg KH

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