On Monday 16 September 2019 17:39:21 Steven Rostedt wrote:

Dear RT Folks,

I'm pleased to announce the 4.19.72-rt25 stable release.

**** <NOTE> ****

As you probably have noticed, it has been a long time since I released
a stable 4.19-rt. The reason for this delay is that one of my tests
failed after merging with the latest stable upstream. I refuse to push
releases with a known bug in it, so I figured I would find the bug
before releasing. I only spend around 4 to 6 hours a week on upstream
stable RT as I have other responsibilities, and I could not debug this
bug during that time (after several weeks of trying).

The bug is a random NULL pointer dereference that only happens with
lockdep enabled and on 32bit x86. I also found that this bug existed
before the latest stable pull release but now it is much easier to
trigger.

I have not been able to trigger this bug in the 64 bit kernel, and as
I rather do a release than waste more time on this bug and postpone
the release further, I am now doing that. As a consequence, I am no
longer supporting 32bit x86, as it is known to have this bug.

If you are interested in this, I am willing to send out the config I
am using and one of the dmesg crashes. Just ask.

**** </NOTE> ****


This release is just an update to the new stable 4.19.72 version
and no RT specific changes have been made.


You can get this release via the git tree at:

  git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git

  branch: v4.19-rt
  Head SHA1: 9cd04ab6a9a162ac4189a80032261d243563ff45

=====================================================================

Or to build 4.19.72-rt25 directly, the following patches should be
applied:

  http://www.kernel.org/pub/linux/kernel/v4.x/linux-4.19.tar.xz

  http://www.kernel.org/pub/linux/kernel/v4.x/patch-4.19.72.xz

 
http://www.kernel.org/pub/linux/kernel/projects/rt/4.19/patch-4.19.72-
rt25.patch.xz

Unfortunately, this does not work for the pi3-4 family. When its all 
pulled in and patched, there is no arch/arm/configs bcm2709_defconfig or 
bcm2711_defconfig for either a pi3b or the new pi4b.

I'll go find the 5.2.14 announce and see if its any more complete.

Enjoy,

-- Steve

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>