GNU bug report logs - #25231
Linux-libre 4.9 fails to load modules on i686 (release blocker!)

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: ludo <at> gnu.org (Ludovic Courtès)
To: bug-guix <at> gnu.org
Cc: Ricardo Wurmus <rekado <at> elephly.net>, Mark H Weaver <mhw <at> netris.org>
Subject: Linux-libre 4.9 fails to load modules on i686 (release blocker!)
Date: Mon, 19 Dec 2016 17:28:30 +0100

Hello!

Linux-libre 4.9.0 triggers this problem on i686 (quoting
<https://hydra.gnu.org/build/1713833/nixlog/21/raw>):

--8<---------------cut here---------------start------------->8---
loading kernel modules...
[    6.085552] libahci: disagrees about version of symbol mcount
[    6.085978] libahci: Unknown symbol mcount (err -22)
./gnu/build/linux-modules.scm:195:6: In procedure load-linux-module*:
./gnu/build/linux-modules.scm:195:6: In procedure load-linux-module: Invalid argument
--8<---------------cut here---------------end--------------->8---

With 4.8.14, things went well:
<https://hydra.gnu.org/build/1689159/log/raw>.

To reproduce, run, for instance:

  ./pre-inst-env guix system vm gnu/system/install.scm -s i686-linux

<https://patchwork.kernel.org/patch/9380911/> suggests this might be a
4.9 bug.

Mark, any ideas?  Did anyone get 4.9 running on i686?

If not, I suggest reverting the 4.8.14 → 4.9 upgrade for the release.

Ludo’.

Message #8 received at 25231 <at> debbugs.gnu.org (full text, mbox):

From: Mark H Weaver <mhw <at> netris.org>
To: ludo <at> gnu.org (Ludovic Courtès)
Cc: 25231 <at> debbugs.gnu.org
Subject: Re: bug#25231: Linux-libre 4.9 fails to load modules on i686 (release
 blocker!)
Date: Mon, 19 Dec 2016 14:16:38 -0500

ludo <at> gnu.org (Ludovic Courtès) writes:

> Linux-libre 4.9.0 triggers this problem on i686 (quoting
> <https://hydra.gnu.org/build/1713833/nixlog/21/raw>):
>
> loading kernel modules...
> [    6.085552] libahci: disagrees about version of symbol mcount
> [    6.085978] libahci: Unknown symbol mcount (err -22)
> ./gnu/build/linux-modules.scm:195:6: In procedure load-linux-module*:
> ./gnu/build/linux-modules.scm:195:6: In procedure load-linux-module: Invalid argument
>
> With 4.8.14, things went well:
> <https://hydra.gnu.org/build/1689159/log/raw>.
>
> To reproduce, run, for instance:
>
>   ./pre-inst-env guix system vm gnu/system/install.scm -s i686-linux
>
> <https://patchwork.kernel.org/patch/9380911/> suggests this might be a
> 4.9 bug.
>
> Mark, any ideas?  Did anyone get 4.9 running on i686?

Not that I know of.  I didn't test it on i686.  Here's another relevant
post:

  https://lkml.org/lkml/2016/10/27/124

I see that there are some commits addressing this issue in Linus' git
repository, but it's not clear to me which set of commits to include, or
how they depend on each other.  It's probably best to wait for 4.9.1.

> If not, I suggest reverting the 4.8.14 → 4.9 upgrade for the release.

Sounds good.  On 'master', I just reverted the 4.9 upgrade, followed
immediately by an upgrade to 4.8.15.  Feel free to cherry-pick to the
version-0.12.0 branch, but make sure to get both of them.

      Thanks,
        Mark

Message #11 received at 25231 <at> debbugs.gnu.org (full text, mbox):

From: ludo <at> gnu.org (Ludovic Courtès)
To: Mark H Weaver <mhw <at> netris.org>
Cc: 25231 <at> debbugs.gnu.org
Subject: Re: bug#25231: Linux-libre 4.9 fails to load modules on i686 (release
 blocker!)
Date: Mon, 19 Dec 2016 21:41:15 +0100

Mark H Weaver <mhw <at> netris.org> skribis:

> ludo <at> gnu.org (Ludovic Courtès) writes:
>
>> Linux-libre 4.9.0 triggers this problem on i686 (quoting
>> <https://hydra.gnu.org/build/1713833/nixlog/21/raw>):
>>
>> loading kernel modules...
>> [    6.085552] libahci: disagrees about version of symbol mcount
>> [    6.085978] libahci: Unknown symbol mcount (err -22)
>> ./gnu/build/linux-modules.scm:195:6: In procedure load-linux-module*:
>> ./gnu/build/linux-modules.scm:195:6: In procedure load-linux-module: Invalid argument
>>
>> With 4.8.14, things went well:
>> <https://hydra.gnu.org/build/1689159/log/raw>.
>>
>> To reproduce, run, for instance:
>>
>>   ./pre-inst-env guix system vm gnu/system/install.scm -s i686-linux
>>
>> <https://patchwork.kernel.org/patch/9380911/> suggests this might be a
>> 4.9 bug.
>>
>> Mark, any ideas?  Did anyone get 4.9 running on i686?
>
> Not that I know of.  I didn't test it on i686.  Here's another relevant
> post:
>
>   https://lkml.org/lkml/2016/10/27/124
>
> I see that there are some commits addressing this issue in Linus' git
> repository, but it's not clear to me which set of commits to include, or
> how they depend on each other.  It's probably best to wait for 4.9.1.

Yeah.

>> If not, I suggest reverting the 4.8.14 → 4.9 upgrade for the release.
>
> Sounds good.  On 'master', I just reverted the 4.9 upgrade, followed
> immediately by an upgrade to 4.8.15.  Feel free to cherry-pick to the
> version-0.12.0 branch, but make sure to get both of them.

Awesome, thanks for the fast reply!

Ricardo: I’ll let you cherry-pick these two commits, sounds good?
(There’s a bunch of commits you may want to take from master anyway.)

Ludo’.

Message #14 received at 25231 <at> debbugs.gnu.org (full text, mbox):

From: Ricardo Wurmus <rekado <at> elephly.net>
To: Ludovic Courtès <ludo <at> gnu.org>
Cc: 25231 <at> debbugs.gnu.org, Mark H Weaver <mhw <at> netris.org>
Subject: Re: bug#25231: Linux-libre 4.9 fails to load modules on i686 (release
 blocker!)
Date: Tue, 20 Dec 2016 11:06:57 +0100

Ludovic Courtès <ludo <at> gnu.org> writes:

> Mark H Weaver <mhw <at> netris.org> skribis:
>>
>> Sounds good.  On 'master', I just reverted the 4.9 upgrade, followed
>> immediately by an upgrade to 4.8.15.  Feel free to cherry-pick to the
>> version-0.12.0 branch, but make sure to get both of them.
>
> Awesome, thanks for the fast reply!
>
> Ricardo: I’ll let you cherry-pick these two commits, sounds good?
> (There’s a bunch of commits you may want to take from master anyway.)

Okay!  Thanks, Mark, for addressing this so quickly!

-- 
Ricardo

GPG: BCA6 89B6 3655 3801 C3C6  2150 197A 5888 235F ACAC
http://elephly.net

Message #19 received at 25231-done <at> debbugs.gnu.org (full text, mbox):

From: ludo <at> gnu.org (Ludovic Courtès)
To: 25231-done <at> debbugs.gnu.org
Cc: Ricardo Wurmus <rekado <at> elephly.net>, Mark H Weaver <mhw <at> netris.org>
Subject: Re: bug#25231: Linux-libre 4.9 fails to load modules on i686 (release
 blocker!)
Date: Tue, 24 Jan 2017 22:59:16 +0100

ludo <at> gnu.org (Ludovic Courtès) skribis:

> Linux-libre 4.9.0 triggers this problem on i686 (quoting
> <https://hydra.gnu.org/build/1713833/nixlog/21/raw>):
>
> loading kernel modules...
> [    6.085552] libahci: disagrees about version of symbol mcount
> [    6.085978] libahci: Unknown symbol mcount (err -22)
> ./gnu/build/linux-modules.scm:195:6: In procedure load-linux-module*:
> ./gnu/build/linux-modules.scm:195:6: In procedure load-linux-module: Invalid argument

This problem disappeared in 4.9.4 (and possibly earlier versions):

  https://hydra.gnu.org/build/1817005/log/raw

Ludo’.

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