GNU bug report logs - #53712
Guix System hangs after boot with linux-libre 5.15.17

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Leo Famulari <leo <at> famulari.name>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#54010: closed (Linux-libre > 5.15.12 leads to unbootable system)
Date: Thu, 24 Feb 2022 15:09:04 +0000

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Your message dated Thu, 24 Feb 2022 10:08:38 -0500
with message-id <Yhefdlj/hJXxEoV9 <at> jasmine.lan>
and subject line Re: bug#53712: Guix System hangs after boot with linux-libre 5.15.17
has caused the debbugs.gnu.org bug report #53712,
regarding Linux-libre > 5.15.12 leads to unbootable system
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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53712: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=53712
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From: Ludovic Courtès <ludo <at> gnu.org>
To: bug-guix <at> gnu.org
Cc: Leo Famulari <leo <at> famulari.name>
Subject: Linux-libre > 5.15.12 leads to unbootable system
Date: Tue, 15 Feb 2022 15:56:27 +0100

2022 has left me without a working Linux-libre kernel.

Breakage occurred sometime between:

  • 92faad0adb93b8349bfd7c67911d3d95f0505eb2
    (Jan. 3rd; Linux-libre 5.15.12)

  • 43dd34c7777a212c99a97da7a2c237158faa9a1b
    (Jan. 31st; Linux-libre 5.15.17)

The symptoms are that, on my x86_64 laptop, the kernel boots, I can
enter the passphrase for my root file system (‘cryptsetup’ is invoked
from the initrd), things get printed, the console font changes, and then
things get stuck here.  The last messages are from my sound card driver
(Intel HDA).  It hangs before syslogd is started, and I think before
shepherd is even started (I can’t be 100% sure because I cannot scroll
back at that point, but I did add print statements in ‘shepherd.conf’
and didn’t see them.)

The same config works in ‘guix system vm’.

I can work around the problem by reconfiguring from current ‘master’ and
doing this:

--8<---------------cut here---------------start------------->8---
(define inferior-for-kernel
  (inferior-for-channels
   (list (channel
          (name 'guix)
          (url "https://git.savannah.gnu.org/git/guix.git")
          (commit
           "92faad0adb93b8349bfd7c67911d3d95f0505eb2")))))

(operating-system
  ;; …
  (kernel
    (first (lookup-inferior-packages inferior-for-kernel "linux-libre"))))
--8<---------------cut here---------------end--------------->8---

This suggests a kernel issue.

Ideas and suggestions on how to debug this most welcome!

Ludo’.

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From: Leo Famulari <leo <at> famulari.name>
To: Squirrel via Bug reports for GNU Guix <bug-guix <at> gnu.org>
Cc: 53712-done <at> debbugs.gnu.org
Subject: Re: bug#53712: Guix System hangs after boot with linux-libre 5.15.17
Date: Thu, 24 Feb 2022 10:08:38 -0500

On Fri, Feb 11, 2022 at 04:03:03AM +0800, Squirrel via Bug reports for GNU Guix wrote:
> It seems that this is a bug from upstream linux, which may be patched soon.
> Please see https://lore.kernel.org/stable/164448100914.10463.9523338503936670263.kvalo <at> kernel.org/

Good news, this bug has been fixed in the latest group of stable Linux
releases:

5.16.11
5.15.25
5.10.102
5.4.181
4.19.231
4.14.268
4.9.303

For our default release series, 5.15, it was fixed as commit
ddd46059f7d99119b62d44c519df7a79f2e6a515:

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.25

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