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From:   Gene Heskett <gheskett@shentel.net>
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Subject: Re: [ANNOUNCE] 4.19.72-rt25
Date:   Mon, 7 Oct 2019 15:16:04 -0400
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On Monday 07 October 2019 15:10:05 Gene Heskett wrote:

> 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-4.19.7
> >2- 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.
Its disappeared.

> > Enjoy,
> >
> > -- Steve
>
> Cheers, Gene Heskett


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>