Bug#912406: systemd: reboot/poweroff usually gets stuck

[Michael Biebl]

Control: reassign -1 linux-image-4.9.0-7-686-pae
Control: retitle -1 ehci-pci.ko prevents shutdown

Hi

Am 23.11.18 um 04:12 schrieb Andrew Pavlomanolakos:
> Hi Michael,
> 
> I built a 4.9.137 kernel and added some trace code and found that the
> issue occurs during device_shutdown() in the linux kernel. Specifically
> when it tries to shutdown the following device:
> 
> 00:1d.0 USB controller: Intel Corporation Atom Processor Z36xxx/Z37xxx
> Series USB EHCI (rev 11)
> 
> As an experiment we removed the ehci-pci.ko and ehci-hcd.ko kernel
> modules so that ehci would not be used. By doing this we found that
> reboots and powerdowns worked 100% of the time.
> 
>> This issue does not occur when I use antiX-17.1_386-core.iso (does not
>> used systemd) or a very old 32 bit PCLOS distro (does not used systemd).
> 
> I performed more testing with antiX-17.1_386-core.iso (does not used
> systemd) and found that this issue DOES occur.
> 
> I was able to confirm that the very old 32 bit PCLOS distro (does not
> used systemd) does not have this issue.
> 
>> This is logged right before systemd-shutdown calls the final
>> reboot() system call. If it get's stuck after that, it looks like it is
>> a kernel issue.
> 
> I think you are right, this looks like a kernel issue, not a systemd
> issue. Currently I have logged this as a systemd issue, how can I change
> this to a kernel issue?

Nice detective work!
Given your findings, I'm going to reassign this issue to the
linux-image-4.9.0-7-686-pae package. According to your original bug
report you were running

Kernel: Linux 4.9.0-7-686-pae (SMP w/4 CPU cores)

Regards,
Michael
-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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