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Message #48597
[Bug 1066435] Re: powerpc: "Fixing recursive fault but reboot is needed!"
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On 2013-05-09T02:50:29+00:00 Santos-m wrote:
Created attachment 347790
emerge --info
ALSA snd-powermac I2C Regression in kernel >3.5.0-rc6+ PPC
ALSA module snd-powermac fails to load on recent kernel versions running
on various PPC chips. This makes ALSA unusable for those kernels.
>From dmesg:
[ 10.537194] i2c i2c-2: PMac Keywest Audio: attach_adapter method is deprecated
[ 10.537198] i2c i2c-2: Please use another way to instantiate your i2c_client
[ 10.537212] i2c i2c-2: Failed to register i2c client keywest at 0x35 (-16)
Using git-bisect I ascertained where the bug first appeared.
The bug is not present in kernel versions before 3.5.0-rc6+, and all
subsequent kernels have the problem.
Here is the commit info from the bisect:
Bisecting: 0 revisions left to test after this (roughly 0 steps)
[3a3dd0186f619b74e61e6f29dddcaf59af7d3cac] i2c/powermac: Improve detection of devices from device-tree
3a3dd0186f619b74e61e6f29dddcaf59af7d3cac is the first bad commit
commit 3a3dd0186f619b74e61e6f29dddcaf59af7d3cac
Author: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Date: Mon Jun 18 12:00:50 2012 +1000
i2c/powermac: Improve detection of devices from device-tree
This patch adds a number of workarounds for broken Apple device-trees
mostly around sound chips. It handles creating the missing audio codec
devices and works around various issues with missing addresses or
missing compatible properties.
Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
:040000 040000 849b9ecd549338cf00f024c15aaa01d5217e1806
90e49b5143a97c43b4f07040b56dc6002ad51f9b M drivers
I've duplicated this bug on several PPC G4 machines, including:
PowerBook 12 (PowerBook6,1) 12" Aluminum PowerBook G4 867 MHz PowerPC
7455 processor originally released January 7, 2003, model number A1010,
order number M8760LL/A
# cat /proc/cpuinfo
processor : 0
cpu : 7455, altivec supported
clock : 867.000000MHz
revision : 3.3 (pvr 8001 0303)
bogomips : 108.20
timebase : 33280414
platform : PowerMac
model : PowerBook6,1
machine : PowerBook6,1
motherboard : PowerBook6,1 MacRISC3 Power Macintosh
detected as : 287 (PowerBook G4 12")
pmac flags : 0000001a
L2 cache : 256K unified
pmac-generation : NewWorld
Memory : 1152 MB
iMac G4 (PowerMac6,1) 17" iMac G4 1.25GHz G4 PowerPC 7457 processor originally released Sep 8, 2003, model number M6498, order number M9168LL/A
# cat /proc/cpuinfo
processor : 0
cpu : 7455, altivec supported
clock : 1249.999995MHz
revision : 3.3 (pvr 8001 0303)
bogomips : 83.20
timebase : 41600571
platform : PowerMac
model : PowerMac6,1
machine : PowerMac6,1
motherboard : PowerMac6,1 MacRISC3 Power Macintosh
detected as : 287 (Flat panel iMac)
pmac flags : 00000010
L2 cache : 256K unified
pmac-generation : NewWorld
Memory : 512 MB
Any help would be much appreciated. Thank You.
Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1066435/comments/87
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On 2013-05-09T03:01:03+00:00 Santos-m wrote:
The kernel tree I'm using is gentoo-sources
Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1066435/comments/88
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On 2013-05-09T04:06:18+00:00 Tomwij-1 wrote:
I have no idea from a first look at the commit, you may be able to try
unapplying some of its changes to get an idea of where the fault in the
commit lies. See the URL field of this bug for the commit.
Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1066435/comments/89
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On 2013-05-20T20:11:49+00:00 Norayr wrote:
I have similar issues on ibook g4
https://bugs.gentoo.org/show_bug.cgi?id=460580
Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1066435/comments/90
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On 2013-07-19T10:07:36+00:00 Tomwij-1 wrote:
Did you try something? Let us know if you need help.
Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1066435/comments/93
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On 2013-08-11T22:46:17+00:00 Santos-m wrote:
(In reply to Tom Wijsman (TomWij) from comment #4)
> Did you try something? Let us know if you need help.
Hi Tom, yes, I'd like some help. Would you recommend just removing a
line or two in a trial-and-error fashion? I don't see anything that
reaches out to me and says "bug."
Thank You,
Bill
Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1066435/comments/94
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On 2013-08-12T21:51:36+00:00 Tomwij-1 wrote:
(In reply to GrowlTiger from comment #5)
> Hi Tom, yes, I'd like some help. Would you recommend just removing a line or
> two in a trial-and-error fashion? I don't see anything that reaches out to
> me and says "bug."
It's quite a commit, over 100 lines; I'll try to read over it soon,
let's see...
Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1066435/comments/95
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On 2013-10-14T15:39:25+00:00 Tomwij-1 wrote:
Created attachment 360882
drivers/i2c/busses/i2c-powermac.c commit log
Hmm, sorry, the commit is too big for an out-stander to understand what
really is going on and what the possible issue might be.
==> Can you try =sys-kernel/git-sources-3.12-rc5? <==
It contains a commit that might outline the problem better:
commit 874e955b171f0505e2371c1ca80a2188efdc217d
Author: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Date: Thu Jul 11 22:02:03 2013 +0100
i2c: powermac: fix return path on error
We want to bail out immediately if i2c_add_adapter failed and not try to
register child nodes with a nilled adapter structure.
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
And possibly some other fixes (see attachment).
Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1066435/comments/99
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On 2013-10-14T15:40:36+00:00 Tomwij-1 wrote:
(Ignore the second half of that attachment, apparently hit CTRL+V twice)
Reply at:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1066435/comments/100
** Changed in: linux (Gentoo Linux)
Importance: Unknown => Medium
** Bug watch added: Gentoo Bugzilla #460580
https://bugs.gentoo.org/show_bug.cgi?id=460580
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https://bugs.launchpad.net/bugs/1066435
Title:
powerpc: "Fixing recursive fault but reboot is needed!"
Status in “linux” package in Ubuntu:
Fix Committed
Status in “linux” source package in Saucy:
Fix Committed
Status in “linux” package in Debian:
Unknown
Status in “linux” package in Gentoo Linux:
Unknown
Bug description:
After what appears to be a completed installation trying to boot end
in the following statement "Fixing recursive fault but reboot is
needed!". Rebooting ends the same with scroll of text and enability
to get to terminal or other. This occurred while doing real hardware
iso testing on the 20121014 Lubuntu alternate powerpc iso doing qa
iso-testing.
Since I do have another clean installed desktop on the computer I might be able to get some of the logs.
---
ApportVersion: 2.6.1-0ubuntu3
Architecture: powerpc
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory
DistroRelease: Ubuntu 12.10
HibernationDevice: RESUME=UUID=22cec03b-37c9-46e0-b37a-227f56d90b1d
InstallationMedia: Lubuntu 12.10 "Quantal Quetzal" - Release powerpc (20121017.1)
Lsusb:
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Package: linux (not installed)
ProcFB: 0 ATI Radeon 4c66
ProcKernelCmdLine: root=UUID=afccd604-1698-439a-80e7-8e3243d1b8c8 ro quiet splash video=radeonfb:1280x854-32@60
ProcVersionSignature: Ubuntu 3.5.0-17.28-powerpc-smp 3.5.5
RelatedPackageVersions:
linux-restricted-modules-3.5.0-17-powerpc-smp N/A
linux-backports-modules-3.5.0-17-powerpc-smp N/A
linux-firmware 1.95
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
Tags: quantal
Uname: Linux 3.5.0-17-powerpc-smp ppc
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
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