[1/3] 2.6.22-rc4: known regressions v2

[1/3] 2.6.22-rc4: known regressions v2

[Michal Piotrowski]

Hi all,

Here is a list of some known regressions in 2.6.22-rc4.

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



Unclassified

Subject    : nanosleep(0) behaviour
References : http://lkml.org/lkml/2007/5/27/108
             http://lkml.org/lkml/2007/6/4/239
Submitter  : Maximilian Engelhardt <maxi@daemonizer.de>
Handled-By : Gary Zambrano <zambrano@broadcom.com>
             Michael Buesch <mb@bu3sch.de>
             Thomas Gleixner <tglx@linutronix.de>
Status     : problem is being debugged

Subject    : Kernel hang on CMOS_READ
References : http://lkml.org/lkml/2007/6/3/138
Submitter  : Rodrigo Luiz <troops.of.doom@gmail.com>
Status     : Unknown


Subject    : Device hang when offlining a CPU due to IRQ misrouting
References : http://lkml.org/lkml/2007/5/31/419
Submitter  : Darrick J. Wong <djwong@us.ibm.com>
Handled-By : Siddha, Suresh B <suresh.b.siddha@intel.com>
Status     : problem is being debugged

Subject    : long freezes on thinkpad t60
References : http://lkml.org/lkml/2007/5/24/100
Submitter  : Miklos Szeredi <miklos@szeredi.hu>
Handled-By : Ingo Molnar <mingo@elte.hu>
Status     : problem is being debugged



Regards,
Michal

--
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Re: [1/3] 2.6.22-rc4: known regressions v2

[Thomas Gleixner]

On Sat, 2007-06-09 at 19:40 +0200, Michal Piotrowski wrote:
> Subject    : nanosleep(0) behaviour
> References : http://lkml.org/lkml/2007/5/27/108
>              http://lkml.org/lkml/2007/6/4/239
> Submitter  : Maximilian Engelhardt <maxi@daemonizer.de>
> Handled-By : Gary Zambrano <zambrano@broadcom.com>
>              Michael Buesch <mb@bu3sch.de>
>              Thomas Gleixner <tglx@linutronix.de>
> Status     : problem is being debugged

Please remove this. The behavior is correct and it just affects buggy
applications like iperf, which used usleep(0) as a yield. iperf is fixed
by now.

	tglx

Re: [1/3] 2.6.22-rc4: known regressions v2

[Pavel Machek]

Hi!

Can we add 'writing to /proc/acpi/thermal/*/trip_points' no longer
works to the list? Len did it intentionally but that does not make it
right. People are using it and we did not go through deprecation
period. Plus there's no reasonable alternative.
							Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

Re: [1/3] 2.6.22-rc4: known regressions v2

[Andrew Morton]

On Tue, 12 Jun 2007 15:02:22 +0000 Pavel Machek <pavel@ucw.cz> wrote:

> Hi!
> 
> Can we add 'writing to /proc/acpi/thermal/*/trip_points' no longer
> works to the list?

I thought we had.

> Len did it intentionally but that does not make it
> right. People are using it and we did not go through deprecation
> period. Plus there's no reasonable alternative.

Was that writeability causing any actual problems in 2.6.21?

Re: [1/3] 2.6.22-rc4: known regressions v2

[Michal Piotrowski]

Andrew Morton pisze:
> On Tue, 12 Jun 2007 15:02:22 +0000 Pavel Machek <pavel@ucw.cz> wrote:
> 
>> Hi!
>>
>> Can we add 'writing to /proc/acpi/thermal/*/trip_points' no longer
>> works to the list?
> 
> I thought we had.

Len rejected this bug
http://bugzilla.kernel.org/show_bug.cgi?id=8495

> 
>> Len did it intentionally but that does not make it
>> right. People are using it and we did not go through deprecation
>> period. Plus there's no reasonable alternative.
> 
> Was that writeability causing any actual problems in 2.6.21?
> 

Regards,
Michal

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