2007-08-05 16:29:05

by Michal Piotrowski

[permalink] [raw]
Subject: Re: [2/2] 2.6.23-rc2: known regressions with patches

Hi all,

Here is a list of some known regressions in 2.6.23-rc2
with patches available.

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 6
Andi Kleen 4
Andrew Morton 4
Linus Torvalds 4
Al Viro 3
Cornelia Huck 3
Jens Axboe 3
Tejun Heo 3
David Woodhouse 2
Hugh Dickins 2
Trent Piepho 2



Memory management

Subject : [bug] SLUB & freeing locks
References : http://lkml.org/lkml/2007/7/26/90
Last known good : ?
Submitter : Ingo Molnar <[email protected]>
Caused-By : ?
Handled-By : Peter Zijlstra <[email protected]>
Patch : http://lkml.org/lkml/2007/7/26/97
Status : patch available



Modpost

Subject : modpost bug breaks ia64 cross compilation
References : http://lkml.org/lkml/2007/7/27/30
http://lkml.org/lkml/2007/7/27/418
Last known good : ?
Submitter : Jan Dittmer <[email protected]>
Caused-By : Thomas Renninger <[email protected]>
commit 29b71a1ca74491fab9fed09e9d835d840d042690
Handled-By : ?
Patch : http://lkml.org/lkml/2007/8/2/211
Status : patch was suggested



Networking

Subject : tg3 dead after s2ram
References : http://lkml.org/lkml/2007/7/31/121
Last known good : ?
Submitter : Joachim Deguara <[email protected]>
Caused-By : ?
Handled-By : Michael Chan <[email protected]>
Patch : http://lkml.org/lkml/2007/8/2/288
Status : patch available



SCSI

Subject : qla2xyz broken in current Linus tree
References : http://marc.info/?l=linux-scsi&m=118581420308892&w=2
Last known good : ?
Submitter : Matthew Wilcox <[email protected]>
Caused-By : Seokmann Ju <[email protected]>
commit 281afe1947d855661754850de29d7530b2ff
Handled-By : Seokmann Ju <[email protected]>
Patch : http://marc.info/?l=linux-scsi&m=118581884800073&w=2
Status : patch available



Regards,
Michal

--
LOG
http://www.stardust.webpages.pl/log/


2007-08-05 16:38:55

by Thomas Renninger

[permalink] [raw]
Subject: Re: [2/2] 2.6.23-rc2: known regressions with patches

On Sun, 2007-08-05 at 18:26 +0200, Michal Piotrowski wrote:
> Hi all,

> Modpost
>
> Subject : modpost bug breaks ia64 cross compilation
> References : http://lkml.org/lkml/2007/7/27/30
> http://lkml.org/lkml/2007/7/27/418
> Last known good : ?
> Submitter : Jan Dittmer <[email protected]>
> Caused-By : Thomas Renninger <[email protected]>
> commit 29b71a1ca74491fab9fed09e9d835d840d042690
> Handled-By : ?
> Patch : http://lkml.org/lkml/2007/8/2/211
> Status : patch was suggested

A patch was sent to Tony. AFAIK it got accepted, not sure whether it
already is in any and which git tree...

> Networking
>
> Subject : tg3 dead after s2ram
> References : http://lkml.org/lkml/2007/7/31/121
> Last known good : ?
> Submitter : Joachim Deguara <[email protected]>
> Caused-By : ?
> Handled-By : Michael Chan <[email protected]>
> Patch : http://lkml.org/lkml/2007/8/2/288
> Status : patch available
>
David Miller sent a message that it got applied.

Thanks,

Thomas

2007-08-05 17:52:52

by Ingo Molnar

[permalink] [raw]
Subject: Re: [2/2] 2.6.23-rc2: known regressions with patches


* Michal Piotrowski <[email protected]> wrote:

> Memory management
>
> Subject : [bug] SLUB & freeing locks
> References : http://lkml.org/lkml/2007/7/26/90
> Last known good : ?
> Submitter : Ingo Molnar <[email protected]>
> Caused-By : ?
> Handled-By : Peter Zijlstra <[email protected]>
> Patch : http://lkml.org/lkml/2007/7/26/97
> Status : patch available

fixed by commit 2208b764c14d0f1ad63da64b1a42db6077b6fe42.

Ingo

2007-08-06 18:45:48

by Luck, Tony

[permalink] [raw]
Subject: RE: [2/2] 2.6.23-rc2: known regressions with patches

> > Caused-By : Thomas Renninger <[email protected]>
> > commit 29b71a1ca74491fab9fed09e9d835d840d042690

> A patch was sent to Tony. AFAIK it got accepted, not sure whether it
> already is in any and which git tree...

The suggested patch adds manual padding to the acpi_device_id structure
definition in include/linux/mod_devicetable.h I didn't take it, and it
appears that nobody else did either. It is not in Linus' tree (as of 2.6.23-rc2).

I expressed doubts about whether this is the right fix. The problem
is that when cross-compiling a locally compiled utility makes a size &
alignment check. This is bogus. We shouldn't care whether this structure
compiles to the same size/alignment as the kernel that will use on the
target platform.

Is fixing this the right way (make the scripts/mod/file2alias.c understand
target alignment rules in a cross environment) just too hideous to
contemplate ... and we should just sacrifice 7 bytes of padding in
order to keep life simple?

-Tony