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Autor: Marjorie Roome
Datum:  
To: dng
Betreff: Re: [DNG] kernel instability 4.9.0-12 with latest update
Hi,

On 2 March I upgraded my ASCI kernel image from 4.9.0-6-amd64 from
4.9.0-12-amd64.

I've not noticed any problems but I've not been running anything CPU
intensive. My processor is a AMD Phenon II X4 910e.

What I did note is that when I did the upgrade it also brought in
modules firmware-linux-free (3.4) and irqbalance (1.1.0-2.3).

Could the problem be in irqbalance (1.1.0-2.3)? I upgraded from 4.9.0-
6-amd64 so I can't say if this version is new since 4.9.0-11-amd64?

"Irqbalance is a daemon that monitors the cpu load created by various 
interrupt sources and attempts to distribute that load over the 
available cpus in your system in an attempt to better balance system 
latency and throughput."

--
Marjorie Roome

-------------------------------------------------------------------

On Wed, 2020-03-18 at 08:58 -0600, Gabe Stanton via Dng wrote:
> It happened again this morning after running the cpu heavy miner for
> about 14 hours. I don't recall it ever happening when I wasn't
> running
> that program, and having it happen now reaffirms for me that is the
> cause on my machine. Prior to the beowulf upgrade I had it running
> pretty much all the time for a few months without issue.
>
> On Tue, 2020-03-17 at 14:26 -0400, Hendrik Boom wrote:
> > On Tue, Mar 17, 2020 at 09:39:21AM -0600, Gabe Stanton via Dng
> > wrote:
> > > One more thing, I'm actually on kernel version 4.19.0.8, but
> > > again, this issue started when I upgraded to beowulf.
> >
> > I've been on beowulf for months now, doing the usual upgrades
> > every few weeks, but only started experiencing 
> > freezes in the past week or two.  I don't know what causes them.
> >
> > hendrik@midwinter:~$ uname -a
> > Linux midwinter 4.9.0-6-amd64 #1 SMP Debian 4.9.88-1+deb9u1 (2018-
> > 05-
> > 07) x86_64 GNU/Linux
> > hendrik@midwinter:~$ 
> >
> > -- hendrik
> >
> > > On Tue, 2020-03-17 at 09:34 -0600, Gabe Stanton via Dng wrote:
> > > > I've had problems with my machine freezing as well, same
> > > > symptoms,
> > > > ever
> > > > since upgrading to beowulf. The issue for me seems to happen
> > > > when
> > > > I
> > > > run
> > > > a cpu/ram heavy program, specifically a cpu cryptominer. I've
> > > > had
> > > > it
> > > > happen a number of times, always when mining with max 2 cores,
> > > > but
> > > > haven't dedicated the time to report it properly. I did look
> > > > through
> > > > various logs in /var/logs but I didn't see anything seemed
> > > > relevant
> > > > to
> > > > the problem.
> > > >
> > > > I'll try to reproduce it today and send any relevant logs. 
> > > >
> > > > What logs specifically would be relevant to this issue? 
> > > >
> > > > Something relevant to the spectre/meltdown mitigations, I have
> > > > multithreading turned off in the bios and have had since the
> > > > vuln's
> > > > were revealed.
> > > >
> > > > Also, 64 bit intel cpu here as well.
> > > >
> > > > On Tue, 2020-03-17 at 03:17 +0000, tuxd3v wrote:
> > > > > Hello Riccardo,
> > > > >
> > > > > > On Sat, 7 Mar 2020 12:19:52 +0100
> > > > > > Riccardo Mottola via Dng <dng@???> >wrote:
> > > > > > Hi,
> > > > > >
> > > > > >
> > > > > > I am using Devuan on an HP laptop with intel 64bit cpu.
> > > > > > Everything 
> > > > > > worked very well, I did a lot of compilation and it is very
> > > > > > stable, 
> > > > > > never had a freeze in months!
> > > > > >
> > > > > > [    0.100000] smpboot: CPU0: Intel(R) Core(TM)2 CPU
> > > > > > T7200  @
> > > > > > 2.00GHz 
> > > > > > (family: 0x6, model: 0xf, stepping: 0x6)
> > > > > > [    0.100000] Performance Events: PEBS fmt0-, Core2
> > > > > > events,
> > > > > > Intel
> > > > > > PMU 
> > > > > > driver.
> > > > > > [    0.100000] core: PEBS disabled due to CPU errata
> > > > > >
> > > > > > Yesterday I installed a kernel upgrade, bad things happened
> > > > > >
> > > > > > 1) after the first reboot with the new kernel, I get up to
> > > > > > my
> > > > > > desktop, 
> > > > > > check out sources ad start building Arctic Fox browser,
> > > > > > come
> > > > > > back
> > > > > > after 
> > > > > > a time and find the machine completely frozen - no disk
> > > > > > activity,
> > > > > > no 
> > > > > > mouse possible, no errors. No response to power button
> > > > > > pressed
> > > > > > (had
> > > > > > to 
> > > > > > press 5 seconds)
> > > > > >
> > > > > > 2) at reboot, machine freezes quite early in the boot
> > > > > > process
> > > > > >
> > > > > > 3) I retry and it still freezes
> > > > > >
> > > > > >
> > > > > > I tried selecting in GRUB the older kernel and it boots. It
> > > > > > goes
> > > > > > past 
> > > > > > the last error, starts file system check/journal replay and
> > > > > > the
> > > > > > machine 
> > > > > > seems stable again.
> > > > > >
> > > > > >
> > > > > > This is the last good kernel version:
> > > > > >
> > > > > > 4.9.0-11-amd64 #1 SMP Debian 4.9.189-3+deb9u2 (2019-11-11)
> > > > > > x86_64
> > > > > > GNU/Linux
> > > > > >
> > > > > >
> > > > > > the unstable version must be the version 4.9.210-1
> > > > > > installed
> > > > > >
> > > > > >
> > > > > > What could the issue be? I read about backports of spectre
> > > > > > mitigations 
> > > > > > being possible issues.
> > > > > >
> > > > >
> > > > > * 'linux-image-4.9.0-12' - I believe , brings Meltdown,
> > > > > Spectre
> > > > > and
> > > > > such mitigation's with it, also fix's..
> > > > > * 'linux-image-4.9.0-11' - Here , sometimes( firefox +
> > > > > youtube
> > > > > videos
> > > > > ), I also have freezes, but the machine ends rebooting..
> > > > >                            Don't know why, never found the
> > > > > real
> > > > > reason for it..
> > > > >                            If I don't go on youtube,
> > > > > everything
> > > > > works, so focus your self on your taks,
> > > > >                            and don't be lazy( its what my
> > > > > computer
> > > > > tells me ) :D
> > > > >
> > > > > For a better understanding of the changes, you can check:
> > > > > ~# zless /usr/share/doc/linux-image-$(uname
> > > > > -r)/changelog.Debian.gz
> > > > >
> > > > >
> > > > > I am also in 'linux-image-4.9.0-11'..and I plan to be there
> > > > > for
> > > > > some
> > > > > time.. :)
> > > > >
> > > > > Best Regards,
> > > > > tux
> > > > >
> > > > >
> > > >
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