Bug#889110: udev: extremely high cpu usage (overheats notebook after a minute of use)

[Alex Henry]

After reading this thread I have managed to solve the issue
https://bbs.archlinux.org/viewtopic.php?id=232890

All it took was for me to remove the "bluetooth" package via aptitude,
which depends on "bluez" - I will create an appropriate bug report for that
package as well.

On 2 February 2018 at 01:12, Alex Henry <tukkek at gmail.com> wrote:

> Package: udev
> Version: 236-3
> Severity: important
>
> Hello it's been a while since I update my Debian (testing) packages for my
> laptop computer
> but after updating all of them today it has been rendered unusable for all
> intents and
> purposes. The main issue is a process tree (systemd-udevd) hangs all my
> CPUs, at least
> one in 100% and the others at 50% or more consistently, non-stop.
>
> This causes my laptop to overheat anywhere between a minute or two minutes
> of use.
> The only way I'm able to write this is by issuing STOP signals to suspend
> the processes
> but it only lasts a couple minutes before it starts again on its own.
> Needless to say,
> this isn't what systemd should behave like and I can't even keep issuing
> STOP long enough
> for anything other than writing this message. My computer is practically
> unusable at this
> point unless I manually issue stop signals every couple of minutes before
> it overheats.
>
> I have tens of thousands of lines like this when I run ""udevadm monitor
> -k":
>
> KERNEL[675.883845] bind     /devices/pci0000:00/0000:00:
> 1d.0/usb2/2-1/2-1.6/2-1.6.2/2-1.6.2:1.0 (usb)
> KERNEL[675.884171] unbind   /devices/pci0000:00/0000:00:
> 1d.0/usb2/2-1/2-1.6/2-1.6.2/2-1.6.2:1.0 (usb)
>
> Pleae consider elevating this issue's priority to critical. In no way the
> package in this current
> state should hit stable for obvious reasons, even if they're not on an
> overheating-prone machine.
>
> -- Package-specific info:
>
> -- System Information:
> Debian Release: buster/sid
>   APT prefers testing
>   APT policy: (500, 'testing')
> Architecture: amd64 (x86_64)
>
> Kernel: Linux 4.14.0-3-amd64 (SMP w/4 CPU cores)
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
> LANGUAGE=en_US:en (charmap=UTF-8)
> Shell: /bin/sh linked to /usr/bin/dash
> Init: systemd (via /run/systemd/system)
> LSM: AppArmor: enabled
>
> Versions of packages udev depends on:
> ii  adduser      3.116
> ii  libacl1      2.2.52-3+b1
> ii  libblkid1    2.30.2-0.3
> ii  libc6        2.26-4
> ii  libkmod2     25-1
> ii  libselinux1  2.7-2
> ii  libudev1     236-3
> ii  lsb-base     9.20170808
> ii  procps       2:3.3.12-3
> ii  util-linux   2.30.2-0.3
>
> udev recommends no packages.
>
> udev suggests no packages.
>
> Versions of packages udev is related to:
> ii  systemd  236-3
>
> -- no debconf information
>
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