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#1 2018-09-13 10:28:43

GoatWarning
Member
Registered: 2018-08-20
Posts: 13

[PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

Upgrading from linux 4.17 to 4.18 provided me with unbootable kernel. Linux 4.18 does not boot even in fallback mode. 4.19-rc3 is also affected. This is my first time debugging the kernel.

I have HP 6730b laptop with Intel Core 2 Duo P8600 CPU, so I thought my issue was related to this thread. But after I bisected linux-git, it looks like my issue is something different.

I bisected linux-git by the instructions given in the wiki and that provided me with this:

84c8b58ed3addf17d3beb2e5037b001ffa65c5ef is the first bad commit

https://git.kernel.org/pub/scm/linux/ke … 1ffa65c5ef

Do I have enough information to report this upstream? Or may this be something only related to Arch?

Last edited by GoatWarning (Today 03:31:34)

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#2 2018-09-13 11:29:37

loqs
Member
Registered: 2014-03-06
Posts: 5,804

Re: [PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

As a cross check you could checkout v4.18 then revert 84c8b58ed3addf17d3beb2e5037b001ffa65c5 and test if that boots successfully.

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#3 2018-09-14 03:58:55

GoatWarning
Member
Registered: 2018-08-20
Posts: 13

Re: [PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

Yes, reverting 84c8b58ed3addf17d3beb2e5037b001ffa65c5 made 4.18 boot successfully.

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#4 2018-09-14 09:36:26

NiceGuy
Member
Registered: 2018-02-19
Posts: 37

Re: [PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

Report it upstream to the kernel developers/maintainers.

According to the script get_maintainer.pl for drivers/pci/hotplug/acpiphp_glue.c:

"Rafael J. Wysocki" <rjw@rjwysocki.net> (supporter:ACPI)
Len Brown <lenb@kernel.org> (supporter:ACPI)
Bjorn Helgaas <bhelgaas@google.com> (supporter:PCI SUBSYSTEM)
linux-acpi@vger.kernel.org (open list:ACPI)
linux-pci@vger.kernel.org (open list:PCI SUBSYSTEM)
linux-kernel@vger.kernel.org (open list)

These are to be contacted for your issue depending on their preference.
You should either report it to https://bugzilla.kernel.org or to the corresponding mailing list(s).

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#5 2018-09-14 09:40:55

NiceGuy
Member
Registered: 2018-02-19
Posts: 37

Re: [PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

As loqs, a while ago, pointed out to me, follow this bug reporting guide: https://www.kernel.org/doc/html/latest/ … -bugs.html

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#6 2018-09-14 12:24:00

GoatWarning
Member
Registered: 2018-08-20
Posts: 13

Re: [PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

Thanks NiceGuy, I already had found that guide and used get_maintainer.pl to get those maintainers

I already reported this on at Bugzilla as the MAINTAINERS file has a line "B: https://bugzilla.kernel.org" on the ACPI section. But Greg Kroah-Hartman pointed me to the linux-pci@vger.kernel.org mailing list and I sent my report there.

This is the original bug report:
https://bugzilla.kernel.org/show_bug.cgi?id=201127

I only sent mail to the linux-pci@vger.kernel.org (as given by GKH). Maybe I should have sent to all the maintainers listed by the get_maintainer.pl script. I'm not very familiar with mailing lists, (how) should I correct this?

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#7 2018-09-14 12:39:21

NiceGuy
Member
Registered: 2018-02-19
Posts: 37

Re: [PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

Do as you were instructed to do it, otherwise you might get a "strong" and overly annoyed reply by the already overworked kernel developers. big_smile
Depending on their mood, some would call it "cursing". wink

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#8 2018-09-14 13:19:24

NiceGuy
Member
Registered: 2018-02-19
Posts: 37

Re: [PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

[Edited:] after re-reading GoatWarning's previous post and not providing any additional info here I stripped this forum post. My bad.

Last edited by NiceGuy (2018-09-14 13:34:58)

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#9 2018-09-14 13:27:58

NiceGuy
Member
Registered: 2018-02-19
Posts: 37

Re: [PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

GoatWarning wrote:

I only sent mail to the linux-pci@vger.kernel.org (as given by GKH). Maybe I should have sent to all the maintainers listed by the get_maintainer.pl script. I'm not very familiar with mailing lists, (how) should I correct this?

Then you are done. Just wait for a response. This could take a few days, so after the weekend you should get a reply from the kernel developers.

Last edited by NiceGuy (2018-09-14 13:36:15)

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#10 2018-09-14 14:56:56

loqs
Member
Registered: 2014-03-06
Posts: 5,804

Re: [PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

I can not find the email in the list archive at https://www.spinics.net/lists/linux-pci/index.html.  Can you please post a link to your thread.

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#11 2018-09-15 03:48:49

GoatWarning
Member
Registered: 2018-08-20
Posts: 13

Re: [PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

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#12 2018-09-15 18:37:46

W54J04S07T
Member
Registered: 2016-06-27
Posts: 19

Re: [PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

GoatWarning wrote:

Upgrading from linux 4.17 to 4.18 provided me with unbootable kernel. Linux 4.18 does not boot even in fallback mode. 4.19-rc3 is also affected. This is my first time debugging the kernel.

...

Having had a similar problem with a relatives core 2 duo laptop,
and noting your other post, I have to ask;  Have you tried to
grub-mkconfig / grub-install ( or simply use "grub customizer"
to do the same thing ) recently ???

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#13 2018-09-15 18:50:07

GoatWarning
Member
Registered: 2018-08-20
Posts: 13

Re: [PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

W54J04S07T wrote:

Having had a similar problem with a relatives core 2 duo laptop,
and noting your other post, I have to ask;  Have you tried to
grub-mkconfig / grub-install ( or simply use "grub customizer"
to do the same thing ) recently ???

No I haven't. I don't use grub. I boot my system using systemd-boot.

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#14 Yesterday 06:20:43

GoatWarning
Member
Registered: 2018-08-20
Posts: 13

Re: [PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

I resent the bug report as I was missing important recipients. After all, the Linux bug reporting guide says:

... regressions, kernel crashes, security holes, or userspace breakage caused by new kernel behavior. Those bugs should be addressed by the maintainers ASAP.

I know this was over a weekend, but I wanted to be sure that the bug report gets the developers as soon as it can. I hadn't had response to the old mail yet. I sent a note to the old thread to note that I resent the report and to ignore the old thread. It seems that the linux-pci archive has some delay so my post doesn't show up yet.

New thread:
https://marc.info/?l=linux-acpi&m=153716394411357

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#15 Yesterday 11:50:23

loqs
Member
Registered: 2014-03-06
Posts: 5,804

Re: [PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

You could try emailing mika.westerberg@linux.intel.com the author of the commit with a Cc to bhelgaas@google.com the committer although I would suggest waiting (although I do not know how long for).
Edit:
email them pointing to your email on the list.
Edit2:
I see upstream is now working with you and have provide a test patch for you to try.

Last edited by loqs (Yesterday 17:00:18)

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#16 Today 03:35:19

GoatWarning
Member
Registered: 2018-08-20
Posts: 13

Re: [PATCH FOUND] Linux 4.18 boot stall related to ACPI / hotplug / PCI

loqs wrote:

I see upstream is now working with you and have provide a test patch for you to try.

Yes, I just finished building the kernel twice. And found that commenting out the line(s) work.
https://bugzilla.kernel.org/show_bug.cgi?id=201127#c4

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