From: Andrew Morton <akpm@linux-foundation.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Fabio Comolli <fabio.comolli@gmail.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
LKML <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Greg KH <gregkh@suse.de>, Len Brown <lenb@kernel.org>,
Alexey Starikovskiy <astarikovskiy@suse.de>
Subject: Re: 2.6.24-rc4-git5: Reported regressions from 2.6.23
Date: Sat, 8 Dec 2007 01:23:54 -0800 [thread overview]
Message-ID: <20071208012354.c808f9d7.akpm@linux-foundation.org> (raw)
In-Reply-To: <20071208082815.GB30997@elte.hu>
On Sat, 8 Dec 2007 09:28:15 +0100 Ingo Molnar <mingo@elte.hu> wrote:
>
> * Fabio Comolli <fabio.comolli@gmail.com> wrote:
>
> > <snip>
> >
> > > Subject : Battery shows up twice in kpowersave
> > > Submitter : Rolf Eike Beer <eike-kernel@sf-tec.de>
> > > References : http://bugzilla.kernel.org/show_bug.cgi?id=9494
> > > Handled-By : Alexey Starikovskiy <astarikovskiy@suse.de>
> > > Patch :
> > >
> >
> > I don't think that this is a regression: I reported on RedHat bugzilla
> > when I switched from F7 to F8 and I was using 2.6.23.8 at that time.
> > It looks to me an HAL regression, but of course I may be wrong :-) as
> > the reported bisected to a bad commit.
> >
> > https://bugzilla.redhat.com/show_bug.cgi?id=373041
> >
> > By the way, I now switched to Fedrora Rawhide with a 2.6.24-rc4-git5
> > custom kernel and Gnome desktop and the problem is still present, even
> > with gnome-power-manager.
>
> to me this looks like an ABI regression - utilities should work without
> change. Something changed in /sys output that caused HAL to think that
> there are two batteries:
Yep. Although HAL is of course a most special case of "userspace".
> | The output of lshal shows that there are two UDI's with
> | info.capabilities = { 'battery' }:
> |
> | udi = '/org/freedesktop/Hal/devices/acpi_BAT0'
> | udi = '/org/freedesktop/Hal/devices/computer_power_supply_0'
>
> whether it's a HAL bug or a kernel bug, the original state should be
> restored and it should be worked out without breaking users of older HAL
> versions.
"breaking users of older HAL versions" == "breaking machines".
The patch should be reverted. Do we know which one it was?
> grumble: way too many times do various system utilities break when i
> upgrade the kernel on my laptop. Maybe a new debug mechanism: we should
> start fingerprinting the exact /sys and /proc output and enforce that
> it's immutable across kernel releases as long as the hardware is
> unmodified?
That would be neat. It would need to be executed on a lot of different
machines.
I wonder if there's something sneaky we can do here. Install the script in
/lib/modules/$(uname -r) and then run it from the kernel when the fork
count reaches 1000 ;)
(hey, I've seen worse: /proc files which start with #!/bin/sh)
next prev parent reply other threads:[~2007-12-08 9:24 UTC|newest]
Thread overview: 103+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-08 2:40 2.6.24-rc4-git5: Reported regressions from 2.6.23 Rafael J. Wysocki
2007-12-08 6:53 ` Fabio Comolli
2007-12-08 8:28 ` Ingo Molnar
2007-12-08 9:23 ` Andrew Morton [this message]
2007-12-08 22:11 ` Rafael J. Wysocki
2007-12-08 9:29 ` Andrew Morton
2007-12-08 22:17 ` Rafael J. Wysocki
2007-12-08 9:30 ` tipc_init(), WARNING: at arch/x86/mm/highmem_32.c:52, [2.6.24-rc4-git5: Reported regressions from 2.6.23] Ingo Molnar
2007-12-08 10:11 ` Andrew Morton
2007-12-08 16:37 ` Matt Mackall
2007-12-08 17:47 ` Linus Torvalds
2007-12-08 17:54 ` Linus Torvalds
2007-12-08 18:09 ` Andrew Morton
2007-12-08 18:37 ` Linus Torvalds
2007-12-08 19:52 ` Ingo Molnar
2007-12-08 20:29 ` Ingo Molnar
2007-12-09 8:20 ` Pekka Enberg
2007-12-09 8:50 ` Ingo Molnar
2007-12-09 9:18 ` Pekka Enberg
2007-12-09 11:51 ` Ingo Molnar
2007-12-09 12:34 ` Ingo Molnar
2007-12-13 22:07 ` Christoph Lameter
2007-12-09 15:59 ` Arjan van de Ven
2007-12-11 6:27 ` Dave Jones
2007-12-11 8:52 ` Ingo Molnar
2007-12-11 19:03 ` Peter Zijlstra
2007-12-14 4:07 ` Christoph Lameter
2007-12-14 7:16 ` Eric Dumazet
2007-12-14 12:49 ` Ingo Molnar
2007-12-17 19:54 ` Christoph Lameter
2007-12-09 7:58 ` Ingo Molnar
2007-12-09 14:17 ` Rafael J. Wysocki
2007-12-08 18:33 ` Matt Mackall
2007-12-08 19:00 ` Matt Mackall
2007-12-09 8:33 ` Pekka Enberg
2007-12-13 22:03 ` Christoph Lameter
2007-12-08 9:36 ` 2.6.24-rc4-git5: Reported regressions from 2.6.23 Andrew Morton
2007-12-08 10:12 ` Andreas Mohr
2007-12-08 10:20 ` Andrew Morton
2007-12-08 10:28 ` Matthew Garrett
2007-12-08 10:55 ` Andreas Mohr
2007-12-09 15:46 ` Tejun Heo
2007-12-09 19:59 ` Andreas Mohr
2007-12-09 6:52 ` Tejun Heo
2007-12-09 14:20 ` Rafael J. Wysocki
2007-12-09 15:11 ` Tejun Heo
2007-12-08 9:42 ` Andrew Morton
2007-12-08 18:57 ` Roland Dreier
2007-12-08 19:40 ` Theodore Tso
2007-12-08 19:55 ` Ingo Molnar
2007-12-08 22:30 ` Rafael J. Wysocki
2007-12-09 2:15 ` Theodore Tso
2007-12-13 10:49 ` Takashi Iwai
2007-12-20 15:42 ` Takashi Iwai
2007-12-08 9:46 ` Andrew Morton
2007-12-08 15:49 ` Alan Stern
2007-12-08 9:52 ` Andrew Morton
2007-12-09 7:00 ` Tejun Heo
2007-12-09 13:42 ` Alan Cox
2007-12-09 15:09 ` Tejun Heo
2007-12-09 15:25 ` Alan Cox
2007-12-09 15:39 ` Tejun Heo
2007-12-09 18:36 ` Linus Torvalds
2007-12-09 21:54 ` Alan Cox
2007-12-09 18:41 ` Linus Torvalds
2007-12-09 22:01 ` Alan Cox
2007-12-09 22:51 ` Ray Lee
2007-12-10 1:57 ` Linus Torvalds
2007-12-10 3:28 ` Alan Cox
2007-12-10 3:38 ` Alan Cox
2007-12-10 15:38 ` Linus Torvalds
2007-12-10 8:21 ` Ingo Molnar
2007-12-10 8:27 ` Tejun Heo
2007-12-10 8:41 ` Ingo Molnar
2007-12-08 10:44 ` Richard Purdie
2007-12-08 22:32 ` Rafael J. Wysocki
2007-12-09 11:54 ` Andrew Morton
2007-12-09 12:05 ` Ingo Molnar
2007-12-09 14:24 ` Rafael J. Wysocki
2007-12-10 20:42 ` Ingo Molnar
2007-12-10 20:57 ` Guillaume Chazarain
2007-12-10 20:59 ` Andrew Morton
2007-12-10 22:45 ` Ingo Molnar
2007-12-10 23:04 ` Ingo Molnar
2007-12-10 23:34 ` Stefano Brivio
2007-12-10 23:53 ` Guillaume Chazarain
2007-12-11 8:48 ` Ingo Molnar
2007-12-10 23:56 ` Arjan van de Ven
2007-12-11 0:01 ` Guillaume Chazarain
2007-12-11 1:06 ` Arjan van de Ven
2007-12-11 8:43 ` Ingo Molnar
2007-12-11 9:01 ` Ingo Molnar
2007-12-11 21:10 ` Stefano Brivio
2007-12-19 0:58 ` Stefano Brivio
[not found] <fa.qQhD8aJpiTOFaZqjRYwoaG7YT1c@ifi.uio.no>
[not found] ` <fa.yaP86AixGhz5Q7eXSu04pIQp6ho@ifi.uio.no>
[not found] ` <fa.c3k8VKWAx4HIo9zXWbL5Ek0oSBw@ifi.uio.no>
[not found] ` <fa.C8ACnOhs8bXB++vmugf5F34JcJg@ifi.uio.no>
[not found] ` <fa.5o6E6S0UWnARbQPxLe30TvLQIiY@ifi.uio.no>
2007-12-08 18:24 ` Robert Hancock
2007-12-09 5:59 ` Tejun Heo
2007-12-09 21:36 ` Andreas Mohr
2007-12-10 0:04 ` Andreas Mohr
2007-12-10 0:49 ` Andreas Mohr
2007-12-10 1:28 ` Robert Hancock
2007-12-10 2:25 ` Tejun Heo
2007-12-10 3:20 ` Robert Hancock
2007-12-10 2:20 ` Tejun Heo
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