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Bug#1085949: Installer regression on ppc64el under PowerKVM

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  Bug#1085949: Installer regression on ppc64el under PowerKVM Ben Hutchings <ben@decadent.org.uk> - 2024-10-23 22:50 +0200
    Bug#1085949: Installer regression on ppc64el under PowerKVM Aditi Mishra <aditi@linux.ibm.com> - 2024-11-08 08:50 +0100
      Bug#1085949: Installer regression on ppc64el under PowerKVM John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> - 2024-11-08 09:00 +0100
    Bug#1085949: Installer regression on ppc64el under PowerKVM John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> - 2025-01-07 10:00 +0100
    Bug#1085949: Installer regression on ppc64el under PowerKVM Aditi Mishra <aditi@linux.ibm.com> - 2025-01-07 10:30 +0100
      Bug#1085949: Installer regression on ppc64el under PowerKVM John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> - 2025-01-16 00:30 +0100
    Bug#1085949: Installer regression on ppc64el under PowerKVM John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> - 2025-03-26 08:10 +0100
    Bug#1085949: marked as done (Installer regression on ppc64el  under PowerKVM) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-03-29 14:20 +0100
    Bug#1085949: marked as done (Installer regression on ppc64el  under PowerKVM) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-03-30 20:10 +0200

#84340 — Bug#1085949: Installer regression on ppc64el under PowerKVM

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Package: src:linux
Version: 6.11.4-1

Opening a new bug report for the issue that was added to #1033058:

-------- Forwarded Message --------
From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
To: Frédéric Bonnard <frediz@debian.org>
Cc: Cyril Brulebois <kibi@debian.org>, debian-kernel <debian-kernel@lists.debian.org>, 1033058@bugs.debian.org, debian-powerpc <debian-powerpc@lists.debian.org>
Subject: Re: Bug#1033058: Booting mini.iso : kernel hangs on ppc64el
Date: 22/10/24 12:37:13
Message-Id: <d16710992358a8aabd09e09d120118c435e07040.camel@physik.fu-berlin.de>

Hello,

I have reopened this bug as this problem even shows on ppc64el again
with the latest netinst daily build downloaded from [1]. I have tested
the image on an IBM 8247-42L inside a PowerKVM virtual machine.

Removing the patch again fixes the problem for me. However, at least on
big-endian ppc64, debian-installer does not accept any keyboard input
after the language menu shows up.

So, either the system has crashed at this point or there is something
wrong with the input device.

Adrian

> [1] https://cdimage.debian.org/mirror/cdimage/daily-builds/sid_d-i/current/ppc64el/iso-cd/

-------- Forwarded Message --------
From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
To: Frédéric Bonnard <frediz@debian.org>
Cc: Cyril Brulebois <kibi@debian.org>, debian-kernel <debian-kernel@lists.debian.org>, 1033058@bugs.debian.org, debian-powerpc <debian-powerpc@lists.debian.org>
Subject: Re: Bug#1033058: Booting mini.iso : kernel hangs on ppc64el
Date: 23/10/24 15:57:13
Message-Id: <b0aef8e982a50b85122e52e96f7c0829ed247f86.camel@physik.fu-berlin.de>

Hello,

On Tue, 2024-10-22 at 12:37 +0200, John Paul Adrian Glaubitz wrote:
> I have reopened this bug as this problem even shows on ppc64el again
> with the latest netinst daily build downloaded from [1]. I have tested
> the image on an IBM 8247-42L inside a PowerKVM virtual machine.

Here is a short video which demonstrates the hang:

> https://people.debian.org/~glaubitz/debian-bug-1033058.mp4

This was reproduced using the following installation image:

> https://cdimage.debian.org/cdimage/daily-builds/daily/current/ppc64el/iso-cd/debian-testing-ppc64el-netinst.iso

Thanks,
Adrian

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#84467

Hello John,

Able to reproduce the issue, however isos from one year ago also 
pointing that same issue.

Thanks and regards,

Aditi.

On Wed, 23 Oct 2024 22:39:20 +0200 Ben Hutchings <ben@decadent.org.uk> 
wrote:
 > Package: src:linux
 > Version: 6.11.4-1
 >
 > Opening a new bug report for the issue that was added to #1033058:
 >
 > -------- Forwarded Message --------
 > From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
 > To: Frédéric Bonnard <frediz@debian.org>
 > Cc: Cyril Brulebois <kibi@debian.org>, debian-kernel 
<debian-kernel@lists.debian.org>, 1033058@bugs.debian.org, 
debian-powerpc <debian-powerpc@lists.debian.org>
 > Subject: Re: Bug#1033058: Booting mini.iso : kernel hangs on ppc64el
 > Date: 22/10/24 12:37:13
 > Message-Id: 
<d16710992358a8aabd09e09d120118c435e07040.camel@physik.fu-berlin.de>
 >
 > Hello,
 >
 > I have reopened this bug as this problem even shows on ppc64el again
 > with the latest netinst daily build downloaded from [1]. I have tested
 > the image on an IBM 8247-42L inside a PowerKVM virtual machine.
 >
 > Removing the patch again fixes the problem for me. However, at least on
 > big-endian ppc64, debian-installer does not accept any keyboard input
 > after the language menu shows up.
 >
 > So, either the system has crashed at this point or there is something
 > wrong with the input device.
 >
 > Adrian
 >
 > > [1] 
https://cdimage.debian.org/mirror/cdimage/daily-builds/sid_d-i/current/ppc64el/iso-cd/
 >
 > -------- Forwarded Message --------
 > From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
 > To: Frédéric Bonnard <frediz@debian.org>
 > Cc: Cyril Brulebois <kibi@debian.org>, debian-kernel 
<debian-kernel@lists.debian.org>, 1033058@bugs.debian.org, 
debian-powerpc <debian-powerpc@lists.debian.org>
 > Subject: Re: Bug#1033058: Booting mini.iso : kernel hangs on ppc64el
 > Date: 23/10/24 15:57:13
 > Message-Id: 
<b0aef8e982a50b85122e52e96f7c0829ed247f86.camel@physik.fu-berlin.de>
 >
 > Hello,
 >
 > On Tue, 2024-10-22 at 12:37 +0200, John Paul Adrian Glaubitz wrote:
 > > I have reopened this bug as this problem even shows on ppc64el again
 > > with the latest netinst daily build downloaded from [1]. I have tested
 > > the image on an IBM 8247-42L inside a PowerKVM virtual machine.
 >
 > Here is a short video which demonstrates the hang:
 >
 > > https://people.debian.org/~glaubitz/debian-bug-1033058.mp4
 >
 > This was reproduced using the following installation image:
 >
 > > 
https://cdimage.debian.org/cdimage/daily-builds/daily/current/ppc64el/iso-cd/debian-testing-ppc64el-netinst.iso
 >
 > Thanks,
 > Adrian
 >

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#84468

Hello Aditi,

On Fri, 2024-11-08 at 11:21 +0530, Aditi Mishra wrote:
> Able to reproduce the issue, however isos from one year ago also 
> pointing that same issue.

I could clearly fix the video console by dropping the extra patch that
Debian is carrying although I still ran into the problem that the
machine hang after debian-installer started.

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913

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#85044

Hi Aditi,

On Tue, 2025-01-07 at 14:12 +0530, Aditi Mishra wrote:
> Just to be informed, I can able to confirm that there are some patches 
> in debian that regressing this issue.
> 
> Can you share those patches ? Also, machine hangs at the time of 
> language selection or before only?

This particular patch [1] breaks the console output extremely early so that
debian-installer doesn't even show.

I have also observed that while removing this patch makes debian-installer
load, it also seems to hang during language selection. I have not figured
out yet what the reason for this hang is.

Adrian

> [1] https://salsa.debian.org/kernel-team/linux/-/blob/debian/latest/debian/patches/bugfix/powerpc/fbdev-offb-Update-expected-device-name.patch?ref_type=heads

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913

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#85045

Hey Adrian,

May I know which patches you have removed? Also, does installer hangs at 
the time of language selection or before ?

Thanks and regards,

Aditi

On Fri, 08 Nov 2024 08:47:33 +0100 John Paul Adrian Glaubitz 
<glaubitz@physik.fu-berlin.de> wrote:
 > Hello Aditi,
 >
 > On Fri, 2024-11-08 at 11:21 +0530, Aditi Mishra wrote:
 > > Able to reproduce the issue, however isos from one year ago also
 > > pointing that same issue.
 >
 > I could clearly fix the video console by dropping the extra patch that
 > Debian is carrying although I still ran into the problem that the
 > machine hang after debian-installer started.
 >
 > Adrian
 >
 > --
 > .''`. John Paul Adrian Glaubitz
 > : :' : Debian Developer
 > `. `' Physicist
 > `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
 >
 >

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#85155

Hello,

On Tue, 7 Jan 2025 14:15:01 +0530 Aditi Mishra <aditi@linux.ibm.com> wrote:
> May I know which patches you have removed?

As already mentioned, it's this patch [1] that broke the framebuffer.

> Also, does installer hangs at the time of language selection or before ?

The installer does not hang, there is just no video because of the framebuffer
problem. The core issue is that this change was made without properly testing
it on all affected targets which is why we're seeing the regression on PowerKVM
and PowerMac.

Thanks,
Adrian

> [1] https://salsa.debian.org/kernel-team/linux/-/blob/debian/latest/debian/patches/bugfix/powerpc/fbdev-offb-Update-expected-device-name.patch?ref_type=heads

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913

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#86612

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Package: src:linux
Version: 6.1.129-1
Followup-For: Bug #1085949
User: debian-powerpc@lists.debian.org
Usertags: powerpc ppc64
X-Debbugs-Cc: debian-powerpc@lists.debian.org

Hi Ben,

could we modify the patch to apply the device name change on ppc64el only?

We could either trigger on "#if(_CALL_ELF == 2)" or "#ifdef __LITTLE_ENDIAN__":

diff --git a/drivers/video/fbdev/offb.c b/drivers/video/fbdev/offb.c
index f85428e13996..3357fef4b705 100644
--- a/drivers/video/fbdev/offb.c
+++ b/drivers/video/fbdev/offb.c
@@ -691,7 +691,11 @@ MODULE_DEVICE_TABLE(of, offb_of_match_display);
 
 static struct platform_driver offb_driver_display = {
        .driver = {
+#ifdef __LITTLE_ENDIAN__
+               .name = "of-display.0",
+#else
                .name = "of-display",
+#endif
                .of_match_table = offb_of_match_display,
        },
        .probe = offb_probe_display,

I'm attaching an updated patch. Could you use this one instead?

Thanks,
Adrian

--
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913

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#86666 — Bug#1085949: marked as done (Installer regression on ppc64el under PowerKVM)

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Your message dated Sat, 29 Mar 2025 13:13:01 +0000
with message-id <E1tyVzh-005Zuf-TE@fasolo.debian.org>
and subject line Bug#1085949: fixed in linux 6.13.9-1~exp1
has caused the Debian Bug report #1085949,
regarding Installer regression on ppc64el under PowerKVM
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
1085949: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1085949
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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#86681 — Bug#1085949: marked as done (Installer regression on ppc64el under PowerKVM)

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Your message dated Sun, 30 Mar 2025 18:00:16 +0000
with message-id <E1tywxE-00DEki-V3@fasolo.debian.org>
and subject line Bug#1085949: fixed in linux 6.12.21-1
has caused the Debian Bug report #1085949,
regarding Installer regression on ppc64el under PowerKVM
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
1085949: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1085949
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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