Comment 66 for bug 1833281

its(In reply to Mikhail Novosyolov from comment #43)
> I encountered the same or a similar bug on BTRFS + HDD 5400 RPM + swap on a
> separate partition. Unfortunately, that notebook is not mine and is far away
> from me, what makes it hard to make experiments, kernels 4.15 and 4.18 both
> did have this problem, which can be reliably reproduced by running
>
> # stress --vm 2 --vm-bytes 2000M --vm-keep
>
> on that notebook with 4 GB RAM.
> After running stress Load Average bumps above 11.0 and the whole system
> freezes.
> Information about its hardware:
> https://linux-hardware.org/index.php?probe=af73180d0c
> (HDD is in bad condition as you may see in smartctl by the URL above, but I
> still believe it's not the reason why swap is not being used properly).
>
> Some other users complain about similar problems here:
> https://forum.rosalinux.ru/viewtopic.php?t=9387 (in Russian). Andreas17
> there also uses BTRFS. I see that here, in my case, in bug#199763 and also
> in another case of similar problem that I know there are too many people
> with BTRFS, but this may be a coincidence.

it's not a coincidence, I did a lot of tests and they were only happening on ALL my machines using a btrfs as root partition