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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Jari Ruusu <jariruusu@users.sourceforge.net>
Cc: Willy Tarreau <w@1wt.eu>,
	Scott Branden <scott.branden@broadcom.com>,
	Linux ARM <linux-arm-kernel@lists.infradead.org>,
	LKML <linux-kernel@vger.kernel.org>,
	BCM Kernel Feedback <bcm-kernel-feedback-list@broadcom.com>
Subject: Re: 5.10 LTS Kernel: 2 or 6 years?
Date: Thu, 18 Feb 2021 15:29:11 +0100
Message-ID: <YC55t1vkRuC9uXcx@kroah.com> (raw)
In-Reply-To: <602E766F.758C74D8@users.sourceforge.net>

On Thu, Feb 18, 2021 at 04:15:11PM +0200, Jari Ruusu wrote:
> Willy Tarreau wrote:
> > The only set of fixes that can be trusted are the "official" stable
> > kernels, because they are the only ones that are approved by the patches
> > authors themselves. Adding more stuff on top of stable kernels is fine
> > (and done at your own risk), but randomly dropping stuff from stable
> > kernels just because you don't think you need that is totally non-sense
> > and must not be done anymore!
> 
> This may be little bit off-topic... but stable kernel.org kernels
> can also bit-rot badly because of "selective" backporting... as in
> anything that does not apply cleanly gets dropped regardless of
> how critical they are.
> 
> I will give you one example: Intel WiFi (iwlwifi) on 4.19.y
> kernel.org stable kernels is currently missing many critical
> locking fixes.

Why has no one asked for the specific upstream commits to be backported
if this is the case?

> As a result, that in-tree iwlwifi driver causes
> erratic behavior to random unrelated processes, and has been doing
> so for many months now. My not-so-politically correct opinion is
> that in-tree iwlwifi is completely FUBAR unless someone steps up
> to do professional quality backport of those locking fixes from
> upstream out-of-tree Intel version [1] [2] of the driver.

Why does any out-of-tree driver come into play here?  What is wrong with
the in-kernel code?

> For me
> only way to get properly working WiFi on my laptop computer is to
> compile that Intel out-of-tree version. Sad, but true.

Why use 4.19.y on a laptop in the firstplace?  That feels very wrong and
is not the recommended thing to use the LTS kernels for.

thanks,

greg k-h

  reply index

Thread overview: 65+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-25 19:55 Scott Branden
2021-01-26  2:50 ` Adam Borowski
2021-01-26  7:29 ` Greg Kroah-Hartman
2021-01-26 17:35   ` Florian Fainelli
2021-01-26 18:30   ` Scott Branden
2021-01-26 18:51     ` Greg Kroah-Hartman
2021-01-26 20:15       ` Willy Tarreau
2021-02-17  9:40       ` Greg Kroah-Hartman
2021-02-17 19:48         ` Scott Branden
2021-02-18  7:43           ` Greg Kroah-Hartman
2021-02-18 11:31             ` Willy Tarreau
2021-02-18 14:15               ` Jari Ruusu
2021-02-18 14:29                 ` Greg Kroah-Hartman [this message]
2021-02-18 20:55                   ` Pavel Machek
2021-02-18 22:43                     ` Ondrej Zary
2021-02-19  8:00                       ` Pavel Machek
2021-02-19  8:30                         ` Greg Kroah-Hartman
2021-02-18 14:33                 ` Willy Tarreau
2021-02-18 17:19                   ` Jari Ruusu
2021-02-18 17:22                     ` Russell King - ARM Linux admin
2021-02-18 17:44                     ` Greg Kroah-Hartman
2021-02-19  7:10                       ` Jari Ruusu
2021-02-19  8:22                         ` Greg Kroah-Hartman
2021-02-19 10:31                           ` Jari Ruusu
2021-02-19 10:37                             ` Greg Kroah-Hartman
2021-02-19 10:57                               ` Jari Ruusu
2021-02-19 11:16                                 ` Greg Kroah-Hartman
2021-02-19 15:23                                   ` Jari Ruusu
2021-02-20 13:29                                     ` Jari Ruusu
2021-02-20 16:05                                       ` Greg Kroah-Hartman
2021-02-20 17:06                                         ` Willy Tarreau
2021-02-21 11:38                                         ` Jari Ruusu
2021-02-19 16:50                                   ` Theodore Ts'o
2021-02-18 17:16               ` Florian Fainelli
2021-02-18 12:51             ` Pavel Machek
2021-02-18 16:51           ` Sasha Levin
2021-02-18 17:21             ` Florian Fainelli
2021-02-18 17:53               ` Greg Kroah-Hartman
2021-02-18 17:57                 ` Florian Fainelli
2021-02-18 18:20                 ` Willy Tarreau
2021-02-18 18:36                   ` Greg Kroah-Hartman
2021-02-18 20:16                     ` Scott Branden
2021-02-18 21:00                       ` Willy Tarreau
2021-02-18 22:38                         ` Scott Branden
2021-02-18 21:39                       ` Sasha Levin
2021-02-18 22:00                         ` Florian Fainelli
2021-02-18 22:26                         ` Scott Branden
2021-02-19  8:25                       ` Greg Kroah-Hartman
2021-02-19 15:05                         ` Florian Fainelli
2021-02-19 15:53                           ` Greg Kroah-Hartman
2021-02-19 17:44                             ` Florian Fainelli
2021-02-22 14:17                               ` Greg Kroah-Hartman
2021-02-18 17:42           ` Florian Fainelli
2021-02-18 18:13             ` Willy Tarreau
2021-02-18 10:04         ` Pavel Machek
2021-02-19  8:54   ` Hanjun Guo
2021-02-19  9:08     ` Greg Kroah-Hartman
2021-02-20  7:02       ` Hanjun Guo
2021-02-20  9:53         ` Greg Kroah-Hartman
2021-02-23  2:14           ` Hanjun Guo
2021-02-19 14:45     ` Nikolai Kondrashov
2021-02-26  8:03       ` Hanjun Guo
2021-02-26 11:21         ` Nikolai Kondrashov
2021-02-22 14:00   ` Nishanth Aravamudan
2021-02-22 14:24     ` Greg Kroah-Hartman

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