Mariusz Kozlowski | 1 Jun 10:34 2008
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Re: Kernel testing tips

Hello,

> While doing very simple testing I have come across a few themes that might
> be useful to other people who want to do light testing of the linux kernel.
> Previously I posted another post talking about checking options (things
> that would hopefully tell you if the kernel is misbehaving sooner) here -
>
http://groups.google.com/group/linux.kernel/browse_frm/thread/d73bbfdc7455cba5/d676733d10ccd21a?#d676733d10ccd21a .
> Hopefully these posts are useful even if they don't get responses...

I think your tips are generally useful. I also think you could try to improve
the Linux Kernel Testers Guide that Michal started. You'll find more info
here:

http://lwn.net/Articles/238838/

as you see there is latex source available. You can try to contact Michal
witch your patches to latex souce of lktg. I think this doc is worth
updating and keeping alive - for sure there is area for improvment.
I haven't heard from Michal for some time so just in case he is not
interested in it anymore I can host updated versions if that's needed.

	Mariusz
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Alexey Fisher | 1 Jun 11:47 2008
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BUG: sleeping function called from invalid context at mm/slab.c:3052

I get this after suspend on my PC (2.6.26-rc4-00103-g1beee8d). I do not
thing there is any reason to bisect it, supend on my PC began to work
only with 2.6.26-rc3:

[  433.110546] BUG: sleeping function called from invalid context at
mm/slab.c:3052
[  433.110550] in_atomic():1, irqs_disabled():0
[  433.110554] 5 locks held by pm-suspend/4783:
[  433.110556]  #0:  (&buffer->mutex){--..}, at: [<c01ac0b0>]
sysfs_write_file+0x24/0xe1
[  433.110572]  #1:  (pm_mutex){--..}, at: [<c0147288>] enter_state
+0x15c/0x170
[  433.110579]  #2:  (cpu_add_remove_lock){--..}, at: [<c0143138>]
disable_nonboot_cpus+0x8/0xc0
[  433.110585]  #3:  (&cpu_hotplug.lock){--..}, at: [<c014308d>]
cpu_hotplug_begin+0x17/0x3e
[  433.110590]  #4:  (smp_alt){--..}, at: [<c0106d9c>]
alternatives_smp_switch+0x14b/0x161
[  433.110598] Pid: 4783, comm: pm-suspend Not tainted
2.6.26-rc4-testing-00103-g1beee8d #35
[  433.110602]  [<c0173715>] kmem_cache_alloc+0x26/0xf2
[  433.110645]  [<c016b443>] __get_vm_area_node+0x8b/0x194
[  433.110652]  [<c016b443>] __get_vm_area_node+0x8b/0x194
[  433.110657]  [<c013ef6c>] __lock_acquire+0xbfc/0xc18
[  433.110662]  [<c016b5c8>] get_vm_area_caller+0x3b/0x40
[  433.110667]  [<c03392c2>] text_poke+0xa8/0x153
[  433.110673]  [<c016ba7d>] vmap+0x1f/0x41
[  433.110677]  [<c03392c2>] text_poke+0xa8/0x153
[  433.110682]  [<c010141c>] sys_execve+0x38/0x4a
[  433.110686]  [<c013c0d6>] get_lock_stats+0x13/0x34
(Continue reading)

Rafael J. Wysocki | 1 Jun 13:51 2008
Picon

Re: Kernel testing tips

On Sunday, 1 of June 2008, Mariusz Kozlowski wrote:
> Hello,
> 
> > While doing very simple testing I have come across a few themes that might
> > be useful to other people who want to do light testing of the linux kernel.
> > Previously I posted another post talking about checking options (things
> > that would hopefully tell you if the kernel is misbehaving sooner) here -
> >
http://groups.google.com/group/linux.kernel/browse_frm/thread/d73bbfdc7455cba5/d676733d10ccd21a?#d676733d10ccd21a .
> > Hopefully these posts are useful even if they don't get responses...
> 
> I think your tips are generally useful. I also think you could try to improve
> the Linux Kernel Testers Guide that Michal started. You'll find more info
> here:
> 
> http://lwn.net/Articles/238838/
> 
> as you see there is latex source available. You can try to contact Michal
> witch your patches to latex souce of lktg. I think this doc is worth
> updating and keeping alive - for sure there is area for improvment.
> I haven't heard from Michal for some time so just in case he is not
> interested in it anymore I can host updated versions if that's needed.

In fact I have an updated version of the guide, but I didn't have the time to
finish it and I didn't want to publish the unfinished work.  If anyone is
interested in working on it, I can provide her/him with the LaTeX sources
and/or set up a git repo.

I'm going to work on it myself a bit during the next few months.

(Continue reading)

Rafael J. Wysocki | 1 Jun 13:54 2008
Picon

Re: BUG: sleeping function called from invalid context at mm/slab.c:3052

On Sunday, 1 of June 2008, Alexey Fisher wrote:
> I get this after suspend on my PC (2.6.26-rc4-00103-g1beee8d). I do not
> thing there is any reason to bisect it, supend on my PC began to work
> only with 2.6.26-rc3:

Well, that's interesting.

I have no idea what ! <at> #$%^& happend here ...

> [  433.110546] BUG: sleeping function called from invalid context at
> mm/slab.c:3052
> [  433.110550] in_atomic():1, irqs_disabled():0
> [  433.110554] 5 locks held by pm-suspend/4783:
> [  433.110556]  #0:  (&buffer->mutex){--..}, at: [<c01ac0b0>]
> sysfs_write_file+0x24/0xe1
> [  433.110572]  #1:  (pm_mutex){--..}, at: [<c0147288>] enter_state
> +0x15c/0x170
> [  433.110579]  #2:  (cpu_add_remove_lock){--..}, at: [<c0143138>]
> disable_nonboot_cpus+0x8/0xc0
> [  433.110585]  #3:  (&cpu_hotplug.lock){--..}, at: [<c014308d>]
> cpu_hotplug_begin+0x17/0x3e
> [  433.110590]  #4:  (smp_alt){--..}, at: [<c0106d9c>]
> alternatives_smp_switch+0x14b/0x161
> [  433.110598] Pid: 4783, comm: pm-suspend Not tainted
> 2.6.26-rc4-testing-00103-g1beee8d #35
> [  433.110602]  [<c0173715>] kmem_cache_alloc+0x26/0xf2
> [  433.110645]  [<c016b443>] __get_vm_area_node+0x8b/0x194
> [  433.110652]  [<c016b443>] __get_vm_area_node+0x8b/0x194
> [  433.110657]  [<c013ef6c>] __lock_acquire+0xbfc/0xc18
> [  433.110662]  [<c016b5c8>] get_vm_area_caller+0x3b/0x40
(Continue reading)

Mariusz Kozlowski | 1 Jun 15:42 2008
Picon

Re: Kernel testing tips

Hi,

> > > While doing very simple testing I have come across a few themes that might
> > > be useful to other people who want to do light testing of the linux kernel.
> > > Previously I posted another post talking about checking options (things
> > > that would hopefully tell you if the kernel is misbehaving sooner) here -
> > >
http://groups.google.com/group/linux.kernel/browse_frm/thread/d73bbfdc7455cba5/d676733d10ccd21a?#d676733d10ccd21a .
> > > Hopefully these posts are useful even if they don't get responses...
> > 
> > I think your tips are generally useful. I also think you could try to improve
> > the Linux Kernel Testers Guide that Michal started. You'll find more info
> > here:
> > 
> > http://lwn.net/Articles/238838/
> > 
> > as you see there is latex source available. You can try to contact Michal
> > witch your patches to latex souce of lktg. I think this doc is worth
> > updating and keeping alive - for sure there is area for improvment.
> > I haven't heard from Michal for some time so just in case he is not
> > interested in it anymore I can host updated versions if that's needed.
> 
> In fact I have an updated version of the guide, but I didn't have the time to
> finish it and I didn't want to publish the unfinished work.  If anyone is
> interested in working on it, I can provide her/him with the LaTeX sources
> and/or set up a git repo.

I'd be interested. git repo is fine - maybe more people will join. Unfortunately my
TODO list at my job ends somewhere in the middle of july so I don't have much time
left even on weekends. Althouhg I'm trying :)
(Continue reading)

Sitsofe Wheeler | 1 Jun 18:22 2008
Picon

[BISECTED][NEXT] Wifi downloads capped at 105Kbytes/s

Download speeds are never more than 105Kbytes/s even though the bit rate is
54Mb/s in at least linux-net kernels from next-20080523 onwards. I have
bisected it down to commit [2e92e6f2c50b4baf85cca968f0e6f1b5c0df7d39]:

commit 2e92e6f2c50b4baf85cca968f0e6f1b5c0df7d39
Author: Johannes Berg <johannes <at> sipsolutions.net>
Date:   Thu May 15 12:55:27 2008 +0200

    mac80211: use rate index in TX control

    This patch modifies struct ieee80211_tx_control to give band
    info and the rate index (instead of rate pointers) to drivers.
    This mostly serves to reduce the TX control structure size to
    make it fit into skb->cb so that the fragmentation code can
    put it there and we can think about passing it to drivers that
    way in the future.

    The rt2x00 driver update was done by Ivo, thanks.

    Signed-off-by: Ivo van Doorn <IvDoorn <at> gmail.com>
    Signed-off-by: Johannes Berg <johannes <at> sipsolutions.net>
    Signed-off-by: John W. Linville <linville <at> tuxdriver.com>

Reverting this seemed to allow speeds up to 1.3Mbytes/s (which is expected
on this network). I believe I see this behaviour with both iwl3945 and
rt2x00 drivers. Here is the bisection log:

# bad: [7b6c98f0853b86c101948f1bf4e0a21d3065944f] Add linux-next specific
files
# good: [703d73f83f3329ebf5108553017b4a1b66b8fe19] Add linux-next specific
(Continue reading)

online | 2 Jun 09:37 2008
Picon

цифровое эфирное

ГОРЯЧАЯ ПРОПОЗИЦИЯ !!!

Комплексні SMART технології у Ваш будинок.
8(044) З6 1 -9 6 - 8 0
ТЕЛЕБАЧЕННЯ
    супутникове
    ефірне
    цифрове ефірне
    підключення до 12 ТБ крапок незалежне
    оптимізація оплати платних каналів при підключенні 
декілька тв точок.

   
БЕЗПЕКА

    сучасні бездротові системи відео спостереження. IP технологія.
    кольорові домофони
    охорона периметра
    проглядання об'єкту з будь-якої точки миру
    сповіщення SMS, про порушення периметра
    архівація відео подій до 2 місяців

МЕРЕЖІ
    WI-FI - мережі на всій території вашої ділянки
    Зв'язок між декількома видаленими об'єктами в мережу.

             
Ми працюємо індивідуально з кожним клієнтом.
Будучи імпортером устаткування, ми стараємося
зробити  проект унікальним і оптимальним за ціною.
(Continue reading)

info | 2 Jun 21:33 2008
Picon

продаж бізнесу під ключ

 Прoдaєтьcя в Києві:
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(xоpoший тopг)

тel.(067)5019882

-----Original Message-----
From: OLGA mailto:info@...
Sent: Wednesday, May 14, 2008 3:11 PM
To: iskozh200@...
Cc: dedmoroz@...
Subject: prodaetsja turoperator - kiev
Attachment (Dr7s.txt): application/octet-stream, 1208 bytes
Alexey Fisher | 3 Jun 12:02 2008
Picon

Re: BUG: sleeping function called from invalid context at mm/slab.c:3052

Am Sonntag, den 01.06.2008, 13:54 +0200 schrieb Rafael J. Wysocki:
> On Sunday, 1 of June 2008, Alexey Fisher wrote:
> > I get this after suspend on my PC (2.6.26-rc4-00103-g1beee8d). I do not
> > thing there is any reason to bisect it, supend on my PC began to work
> > only with 2.6.26-rc3:
> 
> Well, that's interesting.
> 
> I have no idea what ! <at> #$%^& happend here ...
> 
> > [  433.110546] BUG: sleeping function called from invalid context at
> > mm/slab.c:3052
> > [  433.110550] in_atomic():1, irqs_disabled():0
> > [  433.110554] 5 locks held by pm-suspend/4783:
> > [  433.110556]  #0:  (&buffer->mutex){--..}, at: [<c01ac0b0>]
> > sysfs_write_file+0x24/0xe1
> > [  433.110572]  #1:  (pm_mutex){--..}, at: [<c0147288>] enter_state
> > +0x15c/0x170
> > [  433.110579]  #2:  (cpu_add_remove_lock){--..}, at: [<c0143138>]
> > disable_nonboot_cpus+0x8/0xc0
> > [  433.110585]  #3:  (&cpu_hotplug.lock){--..}, at: [<c014308d>]

Seems like it depend on CONFIG_PREEMPT, with CONFIG_PREEMPT_VOLUNTARY
i'll get other Warning:

I try to bisect it now.

[    0.411583] Kprobe smoke test started
[    0.412042] ------------[ cut here ]------------
[    0.412049] WARNING: at kernel/lockdep.c:2658 check_flags
(Continue reading)

absolut | 3 Jun 18:51 2008
Picon

izmenim tsel ispolzovaniya zemli

  Дoброго дня,
Хтось з вaшиx nитав прo зміну цільoвoгo nризнaчення
ділянok - від рішення pади дo akтів.
Mи nрацюємo у одесі тa kиєві, мaємо рекомeндації від клієнтів.
Яkщо вaм ціkавo - nодзвоніть: 482 39 64 (київ) тa 730 53 70 (oдеcа, kод 048)
Дякуємo вaм зa увaгу тa співnрацю.

-----Original Message-----
ра $ $ bl Lki: i cq 8 88 8 6 88
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