2007-09-03 10:11:15

by Michal Piotrowski

[permalink] [raw]
Subject: Re: [2/4] 2.6.23-rc5: known regressions

Hi all,

Here is a list of some known regressions in 2.6.23-rc5.

Feel free to add new regressions/remove fixed etc.
http://kernelnewbies.org/known_regressions

List of Aces

Name Regressions fixed since 21-Jun-2007
Adrian Bunk 9
Linus Torvalds 6
Andi Kleen 5
Hugh Dickins 5
Andrew Morton 4
Al Viro 3
Alan Stern 3
Alexey Starikovskiy 3
Cornelia Huck 3
Jens Axboe 3
Stephen Hemminger 3
Tejun Heo 3



Unclassified

Subject : console is messed up after resume from s2ram or switching to console from X
References : http://lkml.org/lkml/2007/8/4/6
Last known good : ?
Submitter : Jeff Chua <[email protected]>
Caused-By : ?
Handled-By : H. Peter Anvin <[email protected]>
Antonino A. Daplas <[email protected]>
Workaround : "s2ram --force --acpi_sleep 1 --vbe_mode"
Status : problem is being debugged

Subject : konqueror suddenly vanishing, "konqueror: Fatal IO error: client killed"
References : http://lkml.org/lkml/2007/7/22/86
Last known good : ?
Submitter : Markus <[email protected]>
Caused-By : ?
Handled-By : Ingo Molnar <[email protected]>
Status : problem is being debugged



CPUFREQ

Subject : ide problems: 2.6.22-git17 working, 2.6.23-rc1* is not
References : http://lkml.org/lkml/2007/7/27/298
http://lkml.org/lkml/2007/7/29/371
Last known good : ?
Submitter : dth <[email protected]>
Caused-By : Len Brown <[email protected]>
commit f79e3185dd0f8650022518d7624c876d8929061b
Handled-By : Len Brown <[email protected]>
Status : problem is being debugged


FS

Subject : NFSv3 server error in LOOKUP after READDIRPLUS Call
References : http://bugzilla.kernel.org/show_bug.cgi?id=8966
Last known good : ?
Submitter : Peter Kovar <[email protected]>
Caused-By : ?
Handled-By : ?
Status : unknown

Subject : [NFSD OOPS] 2.6.23-rc1-git10
References : http://lkml.org/lkml/2007/8/2/462
Last known good : ?
Submitter : Andrew Clayton <[email protected]>
Caused-By : ?
Handled-By : ?
Status : unknown



Regards,
Michal

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2007-09-03 10:50:37

by H. Peter Anvin

[permalink] [raw]
Subject: Re: [2/4] 2.6.23-rc5: known regressions

Michal Piotrowski wrote:
>
> Unclassified
>
> Subject : console is messed up after resume from s2ram or switching to console from X
> References : http://lkml.org/lkml/2007/8/4/6
> Last known good : ?
> Submitter : Jeff Chua <[email protected]>
> Caused-By : ?
> Handled-By : H. Peter Anvin <[email protected]>
> Antonino A. Daplas <[email protected]>
> Workaround : "s2ram --force --acpi_sleep 1 --vbe_mode"
> Status : problem is being debugged
>

I'm inclined to write this one off as general STR weirdness. The
problem is reproducible on 2.6.22 if CONFIG_FB is enabled (even if not
*used*!), and there is a working workaround that is required on a lot of
machines.

This is suboptimal, of course, but it seems to require a pretty deep
investigation into the intricacies of this particular platform.

-hpa

2007-09-03 12:36:45

by Jeff Chua

[permalink] [raw]
Subject: Re: [2/4] 2.6.23-rc5: known regressions

On 9/3/07, Michal Piotrowski <[email protected]> wrote:

> Subject : console is messed up after resume from s2ram or switching to console from X
> References : http://lkml.org/lkml/2007/8/4/6
> Last known good : ?
> Submitter : Jeff Chua <[email protected]>
> Caused-By : ?
> Handled-By : H. Peter Anvin <[email protected]>
> Antonino A. Daplas <[email protected]>
> Workaround : "s2ram --force --acpi_sleep 1 --vbe_mode"
> Status : problem is being debugged

Michal,

Can you please close this case. I'm using the workaround and satisfied with it.

Thanks,
Jeff.

2007-09-03 12:47:06

by Andrew Morton

[permalink] [raw]
Subject: Re: [2/4] 2.6.23-rc5: known regressions

> On Mon, 03 Sep 2007 11:48:00 +0100 "H. Peter Anvin" <[email protected]> wrote:
> Michal Piotrowski wrote:
> >
> > Unclassified
> >
> > Subject : console is messed up after resume from s2ram or switching to console from X
> > References : http://lkml.org/lkml/2007/8/4/6
> > Last known good : ?
> > Submitter : Jeff Chua <[email protected]>
> > Caused-By : ?
> > Handled-By : H. Peter Anvin <[email protected]>
> > Antonino A. Daplas <[email protected]>
> > Workaround : "s2ram --force --acpi_sleep 1 --vbe_mode"
> > Status : problem is being debugged
> >
>
> I'm inclined to write this one off as general STR weirdness.

Both suspend-to-ram and suspend-to-disk are broken on this Vaio. Running
2.6.23-rc4.


suspend-to-RAM:

a) sometimes hangs during suspend

b) frequently hangs during resume

c) occasionally acts weird after resume. system requires repeated
keypresses to make forward progress.

d) on those occasions where resume-from-RAM _does_ work, it takes much
longer to resume than it used to.

suspend-to-disk:

a) always hangs when netconsole-over-e100 is enabled (might have been a
2.6.21->2.6.22 regression).

b) usually hangs during suspend


Apart from suspend-to-disk's a), all of the above are post-2.6.21
regressions.


2007-09-03 12:53:05

by Andrew Morton

[permalink] [raw]
Subject: Re: [2/4] 2.6.23-rc5: known regressions

> On Mon, 3 Sep 2007 20:36:32 +0800 "Jeff Chua" <[email protected]> wrote:
> On 9/3/07, Michal Piotrowski <[email protected]> wrote:
>
> > Subject : console is messed up after resume from s2ram or switching to console from X
> > References : http://lkml.org/lkml/2007/8/4/6
> > Last known good : ?
> > Submitter : Jeff Chua <[email protected]>
> > Caused-By : ?
> > Handled-By : H. Peter Anvin <[email protected]>
> > Antonino A. Daplas <[email protected]>
> > Workaround : "s2ram --force --acpi_sleep 1 --vbe_mode"
> > Status : problem is being debugged
>
> Michal,
>
> Can you please close this case. I'm using the workaround and satisfied with it.
>

2.6.21 was OK, and 2.6.23-rc2 needed a manual workaround?

That's a regression.

2007-09-03 12:58:26

by Andrew Morton

[permalink] [raw]
Subject: Re: [2/4] 2.6.23-rc5: known regressions

> On Mon, 3 Sep 2007 05:46:02 -0700 Andrew Morton <[email protected]> wrote:
> Apart from suspend-to-disk's a), all of the above are post-2.6.21
> regressions.

I meant: post-2.6.22 regressions.

2007-09-03 13:09:51

by H. Peter Anvin

[permalink] [raw]
Subject: Re: [2/4] 2.6.23-rc5: known regressions

Andrew Morton wrote:
>> On Mon, 3 Sep 2007 20:36:32 +0800 "Jeff Chua" <[email protected]> wrote:
>> On 9/3/07, Michal Piotrowski <[email protected]> wrote:
>>
>>> Subject : console is messed up after resume from s2ram or switching to console from X
>>> References : http://lkml.org/lkml/2007/8/4/6
>>> Last known good : ?
>>> Submitter : Jeff Chua <[email protected]>
>>> Caused-By : ?
>>> Handled-By : H. Peter Anvin <[email protected]>
>>> Antonino A. Daplas <[email protected]>
>>> Workaround : "s2ram --force --acpi_sleep 1 --vbe_mode"
>>> Status : problem is being debugged
>> Michal,
>>
>> Can you please close this case. I'm using the workaround and satisfied with it.
>
> 2.6.21 was OK, and 2.6.23-rc2 needed a manual workaround?
>
> That's a regression.

Yes, it is. 2.6.21 was OK, but only within a narrow and
ill-characterized set of conditions (framebuffer not compiled into the
kernel, in particular.) It appears to me that the interaction between
STR and video on this system is extremely fragile, to the point that any
minor perturbations in the state can break it, and that that is the real
underlying problem here.

-hpa

2007-09-07 22:52:45

by Michal Piotrowski

[permalink] [raw]
Subject: Re: [2/4] 2.6.23-rc5: known regressions

Hi,

On 03/09/2007, Andrew Morton <[email protected]> wrote:
> > On Mon, 03 Sep 2007 11:48:00 +0100 "H. Peter Anvin" <[email protected]> wrote:
> > Michal Piotrowski wrote:
> > >
> > > Unclassified
> > >
> > > Subject : console is messed up after resume from s2ram or switching to console from X
> > > References : http://lkml.org/lkml/2007/8/4/6
> > > Last known good : ?
> > > Submitter : Jeff Chua <[email protected]>
> > > Caused-By : ?
> > > Handled-By : H. Peter Anvin <[email protected]>
> > > Antonino A. Daplas <[email protected]>
> > > Workaround : "s2ram --force --acpi_sleep 1 --vbe_mode"
> > > Status : problem is being debugged
> > >
> >
> > I'm inclined to write this one off as general STR weirdness.
>
> Both suspend-to-ram and suspend-to-disk are broken on this Vaio. Running
> 2.6.23-rc4.
>
>
> suspend-to-RAM:
>
> a) sometimes hangs during suspend
>
> b) frequently hangs during resume
>
> c) occasionally acts weird after resume. system requires repeated
> keypresses to make forward progress.

could be related with

Subject : cpu hotplug support broken in 2.6.23-rc3/highres
timers break cpu hotplug in 2.6.23-rc5
References : http://lkml.org/lkml/2007/8/27/58
http://lkml.org/lkml/2007/9/3/65
Last known good : ?
Submitter : Pavel Machek <[email protected]>
Caused-By : ?
Handled-By : ?
Status : problem is being debugged

>
> d) on those occasions where resume-from-RAM _does_ work, it takes much
> longer to resume than it used to.


Subject : resume from ram much slower
References : http://lkml.org/lkml/2007/8/10/275
Last known good : 2.6.23-rc1 ?
Submitter : Arkadiusz Miskiewicz <[email protected]>
Caused-By : ?
Handled-By : Rafael J. Wysocki <[email protected]>
Status : problem is being debugged

?

>
> suspend-to-disk:
>
> a) always hangs when netconsole-over-e100 is enabled (might have been a
> 2.6.21->2.6.22 regression).
>
> b) usually hangs during suspend
>
>
> Apart from suspend-to-disk's a), all of the above are post-2.6.21
> regressions.
>
>
>

Regards,
Michal

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LOG
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