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Auteur: Gabe Stanton
Date:  
À: dng
Sujet: Re: [DNG] kernel instability 4.9.0-12 with latest update
One more thing, I'm actually on kernel version 4.19.0.8, but again,
this issue started when I upgraded to beowulf.

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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