[Bug #10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Bug #10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
Subject		: Display artifacts on XOrg logout with PAT kernel and VESA framebuffer
Submitter	: Frans Pop <elendil@planet.nl>
Date		: 2008-05-31 14:04 (8 days old)

Re: [Bug #10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Frans Pop]

On Saturday 07 June 2008, Rafael J. Wysocki wrote:
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.

Yes.

> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
> Subject	: Display artifacts on XOrg logout with PAT kernel and VESA framebuffer
> Submitter	: Frans Pop <elendil@planet.nl> 
> Date		: 2008-05-31 14:04 (8 days old)

[Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
Subject		: Display artifacts on XOrg logout with PAT kernel and VESA framebuffer
Submitter	: Frans Pop <elendil@planet.nl>
Date		: 2008-05-31 14:04 (15 days old)
References	: http://lkml.org/lkml/2008/6/7/206

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Frans Pop]

On Saturday 14 June 2008, Rafael J. Wysocki wrote:
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.
>
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
> Subject	: Display artifacts on XOrg logout with PAT kernel and VESA
> 		  framebuffer
> Submitter	: Frans Pop <elendil@planet.nl> 
> Date		: 2008-05-31 14:04 (15 days old)
> References	: http://lkml.org/lkml/2008/6/7/206

Yes. See also: http://lkml.org/lkml/2008/6/13/159

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Romano Giannetti]

On Sat, 2008-06-14 at 23:59 +0200, Frans Pop wrote:
> \>
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
> > Subject	: Display artifacts on XOrg logout with PAT kernel and VESA
> > 		  framebuffer
> > Submitter	: Frans Pop <elendil@planet.nl> 
> > Date		: 2008-05-31 14:04 (15 days old)
> > References	: http://lkml.org/lkml/2008/6/7/206
> 
> Yes. See also: http://lkml.org/lkml/2008/6/13/159
> -

It happens to me too. Do you see
http://bugzilla.kernel.org/show_bug.cgi?id=10892 ?

Romano


-- 
Romano Giannetti                            Dep. de Electrónica y Automática
http://www.dea.icai.upcomillas.es/romano    Univ. Pontificia Comillas (MADRID)


--
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Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Adrian Bunk]

On Sun, Jun 15, 2008 at 12:22:59PM +0200, Romano Giannetti wrote:
> 
> On Sat, 2008-06-14 at 23:59 +0200, Frans Pop wrote:
> > \>
> > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
> > > Subject	: Display artifacts on XOrg logout with PAT kernel and VESA
> > > 		  framebuffer
> > > Submitter	: Frans Pop <elendil@planet.nl> 
> > > Date		: 2008-05-31 14:04 (15 days old)
> > > References	: http://lkml.org/lkml/2008/6/7/206
> > 
> > Yes. See also: http://lkml.org/lkml/2008/6/13/159
> > -
> 
> It happens to me too. Do you see
> http://bugzilla.kernel.org/show_bug.cgi?id=10892 ?

Does disabling CONFIG_X86_PAT also fix it for you?

> Romano

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Rafael J. Wysocki]

On Sunday, 15 of June 2008, Romano Giannetti wrote:
> 
> On Sat, 2008-06-14 at 23:59 +0200, Frans Pop wrote:
> > \>
> > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
> > > Subject	: Display artifacts on XOrg logout with PAT kernel and VESA
> > > 		  framebuffer
> > > Submitter	: Frans Pop <elendil@planet.nl> 
> > > Date		: 2008-05-31 14:04 (15 days old)
> > > References	: http://lkml.org/lkml/2008/6/7/206
> > 
> > Yes. See also: http://lkml.org/lkml/2008/6/13/159
> > -
> 
> It happens to me too. Do you see
> http://bugzilla.kernel.org/show_bug.cgi?id=10892 ?

Do these two bug entries refer to the same problem?

Rafael

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Romano Giannetti]

On Sun, 2008-06-15 at 13:39 +0300, Adrian Bunk wrote:
> On Sun, Jun 15, 2008 at 12:22:59PM +0200, Romano Giannetti wrote:
> > 

> > > Yes. See also: http://lkml.org/lkml/2008/6/13/159
> > > -
> > 
> > It happens to me too. Do you see
> > http://bugzilla.kernel.org/show_bug.cgi?id=10892 ?
> 
> Does disabling CONFIG_X86_PAT also fix it for you?

Dunno. Do I need to recompile or there is some boot option to disable
it?

Rmano
-- 
Romano Giannetti                            Dep. de Electrónica y Automática
http://www.dea.icai.upcomillas.es/romano    Univ. Pontificia Comillas (MADRID)


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Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Frans Pop]

On Sunday 15 June 2008, Rafael J. Wysocki wrote:
> On Sunday, 15 of June 2008, Romano Giannetti wrote:
> > It happens to me too.

Exactly what happens to you to? Do you also see the artifacts?
Do you also use vesafb? Do the artifacts go away if you boot 
with 'video=vfb:off' to disable the framebuffer? Do they go away if you 
compile a kernel without PAT or boot with 'nopat'?

> > Do you see http://bugzilla.kernel.org/show_bug.cgi?id=10892 ?

No. Is that related to PAT being enabled?

> Do these two bug entries refer to the same problem?

Looks unrelated to me.

Cheers,
FJP

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Romano Giannetti]

On Sun, 2008-06-15 at 12:40 +0200, Rafael J. Wysocki wrote:
> On Sunday, 15 of June 2008, Romano Giannetti wrote:
> > 
> > On Sat, 2008-06-14 at 23:59 +0200, Frans Pop wrote:
> > > \>
> > > > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
> > > > Subject	: Display artifacts on XOrg logout with PAT kernel and VESA
> > > > 		  framebuffer
> > > > Submitter	: Frans Pop <elendil@planet.nl> 
> > > > Date		: 2008-05-31 14:04 (15 days old)
> > > > References	: http://lkml.org/lkml/2008/6/7/206
> > > 
> > > Yes. See also: http://lkml.org/lkml/2008/6/13/159
> > > -
> > 
> > It happens to me too. Do you see
> > http://bugzilla.kernel.org/show_bug.cgi?id=10892 ?
> 
> Do these two bug entries refer to the same problem?
> 
> Rafael

I do not know, just a wild guess. I noticed the flashing color when
doing shutdown, and being Intel the common chipset...

-- 
Romano Giannetti                            Dep. de Electrónica y Automática
http://www.dea.icai.upcomillas.es/romano    Univ. Pontificia Comillas (MADRID)


--
La presente comunicación tiene carácter confidencial y es para el exclusivo uso del destinatario indicado en la misma. Si Ud. no es el destinatario indicado, le informamos que cualquier forma de distribución, reproducción o uso de esta comunicación y/o de la información contenida en la misma están estrictamente prohibidos por la ley. Si Ud. ha recibido esta comunicación por error, por favor, notifíquelo inmediatamente al remitente contestando a este mensaje y proceda a continuación a destruirlo. Gracias por su colaboración.

This communication contains confidential information. It is for the exclusive use of the intended addressee. If you are not the intended addressee, please note that any form of distribution, copying or use of this communication or the information in it is strictly prohibited by law. If you have received this communication in error, please immediately notify the sender by reply e-mail and destroy this message. Thank you for your cooperation. 

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Romano Giannetti]

On Sun, 2008-06-15 at 13:25 +0200, Frans Pop wrote:

> 
> > > Do you see http://bugzilla.kernel.org/show_bug.cgi?id=10892 ?
> 
> No. Is that related to PAT being enabled?
> 
> > Do these two bug entries refer to the same problem?
> 
> Looks unrelated to me.

Yes, maybe you're right. Could not test too, booting with nopat gave me
two times in a row the black screen. 

Mmhhh....

Romano 
-- 
Romano Giannetti                            Dep. de Electrónica y Automática
http://www.dea.icai.upcomillas.es/romano    Univ. Pontificia Comillas (MADRID)


--
La presente comunicación tiene carácter confidencial y es para el exclusivo uso del destinatario indicado en la misma. Si Ud. no es el destinatario indicado, le informamos que cualquier forma de distribución, reproducción o uso de esta comunicación y/o de la información contenida en la misma están estrictamente prohibidos por la ley. Si Ud. ha recibido esta comunicación por error, por favor, notifíquelo inmediatamente al remitente contestando a este mensaje y proceda a continuación a destruirlo. Gracias por su colaboración.

This communication contains confidential information. It is for the exclusive use of the intended addressee. If you are not the intended addressee, please note that any form of distribution, copying or use of this communication or the information in it is strictly prohibited by law. If you have received this communication in error, please immediately notify the sender by reply e-mail and destroy this message. Thank you for your cooperation. 

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Adrian Bunk]

On Sun, Jun 15, 2008 at 01:25:17PM +0200, Romano Giannetti wrote:
> 
> On Sun, 2008-06-15 at 13:39 +0300, Adrian Bunk wrote:
> > On Sun, Jun 15, 2008 at 12:22:59PM +0200, Romano Giannetti wrote:
> > > 
> 
> > > > Yes. See also: http://lkml.org/lkml/2008/6/13/159
> > > > -
> > > 
> > > It happens to me too. Do you see
> > > http://bugzilla.kernel.org/show_bug.cgi?id=10892 ?
> > 
> > Does disabling CONFIG_X86_PAT also fix it for you?
> 
> Dunno. Do I need to recompile or there is some boot option to disable
> it?

There's a nopat boot option.

> Rmano

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

RE: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Siddha, Suresh B]

Frans Pop wrote:
> On Saturday 14 June 2008, Rafael J. Wysocki wrote:
> > The following bug entry is on the current list of known regressions
> > from 2.6.25.  Please verify if it still should be listed.
> >
> > Bug-Entry     : http://bugzilla.kernel.org/show_bug.cgi?id=10843
> > Subject       : Display artifacts on XOrg logout with PAT kernel and VESA
> >                 framebuffer
> > Submitter     : Frans Pop <elendil@planet.nl>
> > Date          : 2008-05-31 14:04 (15 days old)
> > References    : http://lkml.org/lkml/2008/6/7/206
>
> Yes. See also: http://lkml.org/lkml/2008/6/13/159

Frans, With or with out pat, in the recent kernels (like 2.6.26-rc4/rc5 etc), ioremap()
uses  UC- and PCI mmap of /sys/devices/pci.../resource (used by X) uses UC-

And fb_mmap() also uses UC-.

It's interesting that you don't see this artifact with "nopat". Essentially with
or with out pat enabled, we use the same memory attributes. So depending on the
MTRR setup (set by X server), effective memory attribute across different mappings
should be same (which is UC- or WC with mtrr).

Can you also check, if there is any impact with kernel boot param for vesafb "mtrr:3"?

thanks,
suresh

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Frans Pop]

On Sunday 15 June 2008, Siddha, Suresh B wrote:
> > Bug-Entry     : http://bugzilla.kernel.org/show_bug.cgi?id=10843
> > Subject       : Display artifacts on XOrg logout with PAT kernel
> > and VESA framebuffer
> > Submitter     : Frans Pop <elendil@planet.nl>
> > Date          : 2008-05-31 14:04 (15 days old)
> > References    : http://lkml.org/lkml/2008/6/7/206
>
> Can you also check, if there is any impact with kernel boot param for
> vesafb "mtrr:3"?

Hello Suresh. Thanks for responding.

I've done 4 successive boots with the boot parameters as shown below.
Each boot was basically: set correct parameters in grub -> login to KDE
                         -> reboot and check for artifacts.

1) (none)                      --> clean
2) vga=791                     --> artifacts
3) vga=791 nopat               --> clean
4) vga=791 video=vesafb:mtrr:3 --> artifacts

So the mtrr option did not help (if I passed it correctly; the double ":"
is somewhat non-intuitive). The kernel log also does not show any
difference I can see in the last boot, but I don't know if the mtrr option
is supposed to show up in any way.

>From the kernel log for each boot:
1) x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
   Console: colour VGA+ 80x25
   console [tty0] enabled

2) x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
   Console: colour dummy device 80x25
   console [tty0] enabled
   vesafb: framebuffer at 0x80000000, mapped to 0xffffc20000900000, using 3072k, total 7872k
   vesafb: mode is 1024x768x16, linelength=2048, pages=4
   vesafb: scrolling: redraw
   vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0
   Console: switching to colour frame buffer device 128x48
   fb0: VESA VGA frame buffer device

3) PAT support disabled
   Console: colour dummy device 80x25
   console [tty0] enabled
   vesafb: framebuffer at 0x80000000, mapped to 0xffffc20000900000, using 3072k, total 7872k
   vesafb: mode is 1024x768x16, linelength=2048, pages=4
   vesafb: scrolling: redraw
   vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0
   Console: switching to colour frame buffer device 128x48
   fb0: VESA VGA frame buffer device

4) x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
   Console: colour dummy device 80x25
   console [tty0] enabled
   vesafb: framebuffer at 0x80000000, mapped to 0xffffc20000900000, using 3072k, total 7872k
   vesafb: mode is 1024x768x16, linelength=2048, pages=4
   vesafb: scrolling: redraw
   vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0
   Console: switching to colour frame buffer device 128x48
   fb0: VESA VGA frame buffer device

Hope that helps. If you need any additional information, please ask.

Cheers,
FJP

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Suresh Siddha]

On Sun, Jun 15, 2008 at 04:02:10PM -0700, Frans Pop wrote:
> I've done 4 successive boots with the boot parameters as shown below.
> Each boot was basically: set correct parameters in grub -> login to KDE
>                          -> reboot and check for artifacts.
> 
> 1) (none)                      --> clean
> 2) vga=791                     --> artifacts
> 3) vga=791 nopat               --> clean
> 4) vga=791 video=vesafb:mtrr:3 --> artifacts
> 
> So the mtrr option did not help (if I passed it correctly; the double ":"
> is somewhat non-intuitive). The kernel log also does not show any
> difference I can see in the last boot, but I don't know if the mtrr option
> is supposed to show up in any way.

If the initlevel is '3', then the mtrr option will show up in /proc/mtrr
otheriwse not. In init level '5', X server will add the mtrr (irrespective
of boot option, if it's not already there) and will remove it when the X process
completes its execution.

Can you also please try if "mtrr:1" makes any difference. This will setup the
mapping as UC during boot. Apart from PAT WC mapping(which we shouldn't be using
in your current setup), UC MTRR should override all the other PAT mappings and
should be consistent across X and VT console mappings. As such, if the
problem is because of improper aliasing, then with this UC MTRR,
my understanding is that we shouldn't see any artifacts with the "mtrr:1".

with this mtrr:1, we should now see a UC mtrr setting in /proc/mtrr.

thanks,
suresh

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Frans Pop]

[-- Attachment #1: Type: text/plain, Size: 3700 bytes --]

On Monday 16 June 2008, Suresh Siddha wrote:
> If the initlevel is '3', then the mtrr option will show up in
> /proc/mtrr otherwise not.

What is this init level and how would I set it? Do I need to?

> In init level '5', X server will add the mtrr 
> (irrespective of boot option, if it's not already there) and will
> remove it when the X process completes its execution.

That was a useful pointer. I do see some differences when I compare
Xorg logs; see below.

> Can you also please try if "mtrr:1" makes any difference. This will
> setup the mapping as UC during boot. Apart from PAT WC mapping(which we
> shouldn't be using in your current setup), UC MTRR should override all
> the other PAT mappings and should be consistent across X and VT console
> mappings. As such, if the problem is because of improper aliasing, then
> with this UC MTRR, my understanding is that we shouldn't see any
> artifacts with the "mtrr:1".
> with this mtrr:1, we should now see a UC mtrr setting in /proc/mtrr.

mtrr:1 still gives the artifacts and no any difference to /proc/mtrr.

Here's /proc/cmdline + /proc/mtrr for three different boots:
root=/dev/mapper/main-root ro vga=791 quiet
reg00: base=0x00000000 (   0MB), size=2048MB: write-back, count=1
reg01: base=0x7f800000 (2040MB), size=   8MB: uncachable, count=1
reg02: base=0x7f700000 (2039MB), size=   1MB: uncachable, count=1
reg03: base=0x80000000 (2048MB), size= 256MB: write-combining, count=1

root=/dev/mapper/main-root ro vga=791 quiet video=vesafb:mtrr:1
reg00: base=0x00000000 (   0MB), size=2048MB: write-back, count=1
reg01: base=0x7f800000 (2040MB), size=   8MB: uncachable, count=1
reg02: base=0x7f700000 (2039MB), size=   1MB: uncachable, count=1
reg03: base=0x80000000 (2048MB), size= 256MB: write-combining, count=1

root=/dev/mapper/main-root ro vga=791 quiet video=vesafb:mtrr:3
reg00: base=0x00000000 (   0MB), size=2048MB: write-back, count=1
reg01: base=0x7f800000 (2040MB), size=   8MB: uncachable, count=1
reg02: base=0x7f700000 (2039MB), size=   1MB: uncachable, count=1
reg03: base=0x80000000 (2048MB), size= 256MB: write-combining, count=1


I do see some differences in Xorg logs, so it does seem that the mtrr
options _are_ being recognized.
Attached my "normal" Xorg log (with 'vga=791') which I used as the base
for the diffs below. Other than shown, the logs are identical.

With mtrr:1 I get (added at the end of the log):
@@ -688,3 +688,11 @@
 (II) evaluating device (Generic Keyboard)
 (II) XINPUT: Adding extended input device "Generic Keyboard" (type: KEYBOARD)
 (II) Configured Mouse: ps2EnableDataReporting: succeeded
+(II) intel(0): xf86UnbindGARTMemory: unbind key 0
+(II) intel(0): xf86UnbindGARTMemory: unbind key 1
+(II) intel(0): xf86UnbindGARTMemory: unbind key 2
+(II) intel(0): xf86UnbindGARTMemory: unbind key 3
+(II) intel(0): xf86UnbindGARTMemory: unbind key 4
+(II) intel(0): [drm] removed 1 reserved context for kernel
+(II) intel(0): [drm] unmapping 8192 bytes of SAREA 0x2efff000 at 0x7f2788ab9000
+(II) intel(0): [drm] Closed DRM master.

And with mtrr:3 (added in the middle):
@@ -577,6 +577,7 @@
 (II) intel(0): [drm] Initialized kernel agp heap manager, 33554432
 (II) intel(0): [dri] visual configs initialized
 (II) intel(0): Page Flipping disabled
+(==) intel(0): Removed MMIO write-combining range (0x80000000,0x400000)
 (==) intel(0): Write-combining range (0x80000000,0x10000000)
 (II) intel(0): vgaHWGetIOBase: hwp->IOBase is 0x03d0, hwp->PIOOffset is 0x0000
 (II) EXA(0): Offscreen pixmap area of 39321600 bytes


I've also checked with 'nopat'. That gives no differences in /proc/mtrr,
and also no differences in the Xorg log when compared with my normal boot
(vga=791).

Cheers,
FJP


[-- Attachment #2: Xorg.0.log.gz --]
[-- Type: application/x-gzip, Size: 7129 bytes --]

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Frans Pop]

On Monday 16 June 2008, Frans Pop wrote:
> I do see some differences in Xorg logs, so it does seem that the mtrr
> options _are_ being recognized.
> Attached my "normal" Xorg log (with 'vga=791') which I used as the base
> for the diffs below. Other than shown, the logs are identical.
>
> With mtrr:1 I get (added at the end of the log):
> @@ -688,3 +688,11 @@
>  (II) evaluating device (Generic Keyboard)
>  (II) XINPUT: Adding extended input device "Generic Keyboard" (type:
> KEYBOARD)
> (II) Configured Mouse: ps2EnableDataReporting: succeeded 
> +(II) intel(0): xf86UnbindGARTMemory: unbind key 0
> +(II) intel(0): xf86UnbindGARTMemory: unbind key 1
> +(II) intel(0): xf86UnbindGARTMemory: unbind key 2
> +(II) intel(0): xf86UnbindGARTMemory: unbind key 3
> +(II) intel(0): xf86UnbindGARTMemory: unbind key 4
> +(II) intel(0): [drm] removed 1 reserved context for kernel
> +(II) intel(0): [drm] unmapping 8192 bytes of SAREA 0x2efff000 at
> 0x7f2788ab9000
> +(II) intel(0): [drm] Closed DRM master. 

Oops. Just realized that this is completely bogus. I used the .old log for 
this one while I used logs for still running Xorg sessions for the 
others. So this was actually the only one that contains Xorg shutdown 
messages at all.

> And with mtrr:3 (added in the middle):
> @@ -577,6 +577,7 @@
>  (II) intel(0): [drm] Initialized kernel agp heap manager, 33554432
>  (II) intel(0): [dri] visual configs initialized
>  (II) intel(0): Page Flipping disabled
> +(==) intel(0): Removed MMIO write-combining range
> (0x80000000,0x400000)
> (==) intel(0): Write-combining range (0x80000000,0x10000000)
>  (II) intel(0): vgaHWGetIOBase: hwp->IOBase is 0x03d0, hwp->PIOOffset
> is 0x0000
> (II) EXA(0): Offscreen pixmap area of 39321600 bytes 

This is still valid though.

Sorry for the confusion.

[Bug #10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
Subject		: Display artifacts on XOrg logout with PAT kernel and VESA framebuffer
Submitter	: Frans Pop <elendil@planet.nl>
Date		: 2008-05-31 14:04 (23 days old)
References	: http://lkml.org/lkml/2008/6/7/206
		  http://lkml.org/lkml/2008/6/15/119

Re: [Bug #10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Frans Pop]

On Sunday 22 June 2008, Rafael J. Wysocki wrote:
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.
>
>
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
> Subject	: Display artifacts on XOrg logout with PAT kernel and VESA
> 		  framebuffer
> Submitter	: Frans Pop <elendil@planet.nl> 
> Date		: 2008-05-31 14:04 (23 days old)
> References	: http://lkml.org/lkml/2008/6/7/206
> 		  http://lkml.org/lkml/2008/6/15/119

Yes.

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Frans Pop]

On Sunday 15 June 2008, Siddha, Suresh B wrote:
> Frans Pop wrote:
> > On Saturday 14 June 2008, Rafael J. Wysocki wrote:
> > > Bug-Entry     : http://bugzilla.kernel.org/show_bug.cgi?id=10843
> > > Subject       : Display artifacts on XOrg logout with PAT kernel
> > > and VESA framebuffer
> > > Submitter     : Frans Pop <elendil@planet.nl>
> > > Date          : 2008-05-31 14:04 (15 days old)
> > > References    : http://lkml.org/lkml/2008/6/7/206
> >
> > Yes. See also: http://lkml.org/lkml/2008/6/13/159
>
> Frans, With or without pat, in the recent kernels (like 2.6.26-rc4/rc5
> etc), ioremap() uses  UC- and PCI mmap of /sys/devices/pci.../resource
> (used by X) uses UC-
>
> And fb_mmap() also uses UC-.
>
> It's interesting that you don't see this artifact with "nopat".
> Essentially with or with out pat enabled, we use the same memory
> attributes. So depending on the MTRR setup (set by X server), effective
> memory attribute across different mappings should be same (which is UC-
> or WC with mtrr).

Any progress on this issue? It's still there with -rc7, but I doubt that 
comes as a surprise.

Has anyone tried to reproduce this? I would think that should be trivial.

Just as a summary:
- Intel 82945G/GZ graphics [8086:2772] (ICH7 based system)
- FB_VESA=y, FRAMEBUFFER_CONSOLE=y
- boot with vga=791
- Log in to X and KDE; I do need to really log in there are no artifacts
  if I exit X from the kdm login dialog
- artifacts show on logout

I doubt it's KDE related or even related to my specific graphics card.

It may well be related to what is or has been displayed on the display 
before logging out, so running some apps may make sense. Seems like I do 
see remnants of for example aptitude (Debian apt frontend) after I've run 
it in an X term (KDE's konsole).

Cheers,
FJP

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Suresh Siddha]

On Mon, Jun 23, 2008 at 05:38:59AM -0700, Frans Pop wrote:
> On Sunday 15 June 2008, Siddha, Suresh B wrote:
> > Frans Pop wrote:
> > > On Saturday 14 June 2008, Rafael J. Wysocki wrote:
> > > > Bug-Entry     : http://bugzilla.kernel.org/show_bug.cgi?id=10843
> > > > Subject       : Display artifacts on XOrg logout with PAT kernel
> > > > and VESA framebuffer
> > > > Submitter     : Frans Pop <elendil@planet.nl>
> > > > Date          : 2008-05-31 14:04 (15 days old)
> > > > References    : http://lkml.org/lkml/2008/6/7/206
> > >
> > > Yes. See also: http://lkml.org/lkml/2008/6/13/159
> >
> > Frans, With or without pat, in the recent kernels (like 2.6.26-rc4/rc5
> > etc), ioremap() uses  UC- and PCI mmap of /sys/devices/pci.../resource
> > (used by X) uses UC-
> >
> > And fb_mmap() also uses UC-.
> >
> > It's interesting that you don't see this artifact with "nopat".
> > Essentially with or with out pat enabled, we use the same memory
> > attributes. So depending on the MTRR setup (set by X server), effective
> > memory attribute across different mappings should be same (which is UC-
> > or WC with mtrr).
> 
> Any progress on this issue? It's still there with -rc7, but I doubt that
> comes as a surprise.
> 
> Has anyone tried to reproduce this? I would think that should be trivial.
> 
> Just as a summary:
> - Intel 82945G/GZ graphics [8086:2772] (ICH7 based system)
> - FB_VESA=y, FRAMEBUFFER_CONSOLE=y
> - boot with vga=791
> - Log in to X and KDE; I do need to really log in there are no artifacts
>   if I exit X from the kdm login dialog
> - artifacts show on logout
> 
> I doubt it's KDE related or even related to my specific graphics card.
> 
> It may well be related to what is or has been displayed on the display
> before logging out, so running some apps may make sense. Seems like I do
> see remnants of for example aptitude (Debian apt frontend) after I've run
> it in an X term (KDE's konsole).

FJP, We will try to reproduce this and getback. Your earlier responses did not
give many clues.

thanks,
suresh

2.6.26-rc8: Reported regressions from 2.6.25

[Rafael J. Wysocki]

This message contains a list of some regressions from 2.6.25, for which there
are no fixes in the mainline I know of.  If any of them have been fixed already,
please let me know.

If you know of any other unresolved regressions from 2.6.25, please let me know
either and I'll add them to the list.  Also, please let me know if any of the
entries below are invalid.

Each entry from the list will be sent additionally in an automatic reply to
this message with CCs to the people involved in reporting and handling the
issue.


Listed regressions statistics:

  Date          Total  Pending  Unresolved
  ----------------------------------------
  2008-06-29      158       43          31
  2008-06-22      148       39          28
  2008-06-14      130       37          28
  2008-06-07      125       48          33
  2008-05-31      115       52          31
  2008-05-24       94       47          28
  2008-05-18       80       51          37
  2008-05-11       53       46          34


Unresolved regressions
----------------------

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11009
Subject		: No console on Riva TNT since 2.6.26-0.rc4
Submitter	: Quel Qun <kelk1@comcast.net>
Date		: 2008-06-26 20:04 (4 days old)
References	: http://marc.info/?l=linux-kernel&m=121451344229718&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11008
Subject		: after laptop re-dock: usb-storage device no longer detected
Submitter	: Lukas Hejtmanek <xhejtman@ics.muni.cz>
Date		: 2008-06-26 17:37 (4 days old)
References	: http://lkml.org/lkml/2008/6/26/391
Handled-By	: Alan Stern <stern@rowland.harvard.edu>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11007
Subject		: [BISECT] Boot failure on ia64.
Submitter	: Robin Holt <holt@sgi.com>
Date		: 2008-06-24 07:30 (6 days old)
References	: http://lkml.org/lkml/2008/6/24/196
Handled-By	: Alex Chiang <achiang@hp.com>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11006
Subject		: 2.6.26-rc6: pcmcia stopped working
Submitter	: Pavel Machek <pavel@suse.cz>
Date		: 2008-06-22 22:40 (8 days old)
References	: http://marc.info/?l=linux-kernel&m=121420740806363&w=4
		  http://marc.info/?t=121439185700001&r=1&w=4
Handled-By	: Tejun Heo <htejun@gmail.com>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11005
Subject		: 2.6.26-rc5-git2: snd-emu10k1 does not work
Submitter	: Rafael J. Wysocki <rjw@sisk.pl>
Date		: 2008-06-08 21:03 (22 days old)
References	: http://marc.info/?l=linux-kernel&m=121295902917875&w=4
Handled-By	: Takashi Iwai <tiwai@suse.de>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10989
Subject		: kernel oopses when wiggling the mouse to make it known to hidd
Submitter	: Daniel Vetter <daniel@ffwll.ch>
Date		: 2008-06-26 10:32 (4 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10985
Subject		: backlight doesn't come on after resume with i915 video
Submitter	: Jon Dowland <jon+bugzilla.kernel.org@alcopop.org>
Date		: 2008-06-26 02:09 (4 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10984
Subject		: MMC print trace information when resume from suspend
Submitter	: Jie Luo <clotho67@gmail.com>
Date		: 2008-06-26 01:15 (4 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10971
Subject		: radeonfb : radeon X800 family support (atombios)
Submitter	: Jimmy.Jazz@gmx.net
Date		: 2008-06-23 14:35 (7 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10965
Subject		: system hang on closing T60 panel lid when in dual screen mode 2.6.26 regression
Submitter	: Franklin Piat <fpiat@bigfoot.com>
Date		: 2008-06-23 09:10 (7 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10962
Subject		: 2.6.26-rc2 WARNING from usb-serial, and then my gps is dead
Submitter	: Helge Hafting <helge.hafting@aitel.hist.no>
Date		: 2008-06-22 18:22 (8 days old)
References	: http://marc.info/?l=linux-kernel&m=121415899320685&w=4
Handled-By	: Greg Kroah-Hartman <greg@kroah.com>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10961
Subject		: 2.6.26-rc: nfsd hangs for a few sec
Submitter	: Alexander Beregalov <a.beregalov@gmail.com>
Date		: 2008-06-21 12:57 (9 days old)
References	: http://marc.info/?l=linux-kernel&m=121405308328004&w=4
		  http://marc.info/?l=linux-kernel&m=121412880115289&w=4
Handled-By	: Linus Torvalds <torvalds@linux-foundation.org>
		  Mel Gorman <mel@csn.ul.ie>
		  Christoph Lameter <clameter@sgi.com>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10960
Subject		: 2.6.26-rc: SPARC: Sun Ultra 10 can not boot
Submitter	: Alexander Beregalov <a.beregalov@gmail.com>
Date		: 2008-06-19 14:07 (11 days old)
References	: http://marc.info/?l=linux-kernel&m=121388456519637&w=4
Handled-By	: David Miller <davem@davemloft.net>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10959
Subject		: stuck tcp connections 2.6.26-rc7
Submitter	: Justin Mattock <justinmattock@gmail.com>
Date		: 2008-06-22 18:09 (8 days old)
References	: http://marc.info/?l=linux-kernel&m=121415821219644&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10957
Subject		: pata_pcmcia with Sandisk Extreme III 8GB
Submitter	: Komuro <komurojun-mbn@nifty.com>
Date		: 2008-06-07 13:37 (23 days old)
References	: http://marc.info/?l=linux-kernel&m=121284627119861&w=4
Handled-By	: Tejun Heo <htejun@gmail.com>
		  Dominik Brodowski <linux@dominikbrodowski.net>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10955
Subject		: v2.6.26-rc7: BUG task_struct: Poison overwritten
Submitter	: Vegard Nossum <vegard.nossum@gmail.com>
Date		: 2008-06-21 19:24 (9 days old)
References	: http://marc.info/?l=linux-kernel&m=121407641925121&w=4
Handled-By	: Peter Zijlstra <a.p.zijlstra@chello.nl>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10954
Subject		: hda_intel: azx_get_response timeout, switching to polling mode: last cmd=0x011f000c
Submitter	: Justin Mattock <justinmattock@gmail.com>
Date		: 2008-06-21 2:05 (9 days old)
References	: http://marc.info/?l=linux-kernel&m=121401399622190&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10923
Subject		: System turns off during wake from S3, Wake Regression from 2.6.25 (SMP related)
Submitter	: Dionisus Torimens <djtm@gmx.net>
Date		: 2008-06-15 16:24 (15 days old)


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10919
Subject		: [regression] display dimming is slow and laggy - Acer Travelmate 661lci
Submitter	: Maximilian Engelhardt <maxi@daemonizer.de>
Date		: 2008-06-14 22:31 (16 days old)
References	: http://marc.info/?l=linux-kernel&m=121348428828320&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10906
Subject		: repeatable slab corruption with LTP msgctl08
Submitter	: Andrew Morton <akpm@linux-foundation.org>
Date		: 2008-06-12 5:13 (18 days old)
References	: http://marc.info/?l=linux-kernel&m=121324775927704&w=4
Handled-By	: Pekka J Enberg <penberg@cs.helsinki.fi>
		  Christoph Lameter <clameter@sgi.com>
		  Manfred Spraul <manfred@colorfullife.com>
		  Andi Kleen <andi@firstfloor.org>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10872
Subject		: x86_64 boot hang when CONFIG_NUMA=n
Submitter	: Randy Dunlap <randy.dunlap@oracle.com>
Date		: 2008-06-05 21:50 (25 days old)
References	: http://marc.info/?l=linux-kernel&m=121270308607116&w=4
		  http://lkml.org/lkml/2008/6/11/355
		  http://lkml.org/lkml/2008/6/15/117
Handled-By	: Yinghai Lu <yhlu.kernel@gmail.com>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10868
Subject		: Oops on loading ipaq module since 2.6.26, prevents use of device
Submitter	: Adam Williamson <awilliamson@mandriva.com>
Date		: 2008-06-05 17:39 (25 days old)
References	: http://marc.info/?t=121287647600002&r=1&w=4
Handled-By	: Oliver Neukum <oliver@neukum.org>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10865
Subject		: Oops trying to mount an ntfs partition on thinkpad
Submitter	: Alex Romosan <romosan@sycorax.lbl.gov>
Date		: 2008-06-05 14:47 (25 days old)
References	: http://marc.info/?l=linux-kernel&m=121267834421414&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10862
Subject		: forcedeth: lockdep warning on ethtool -s
Submitter	: Tobias Diedrich <ranma+kernel@tdiedrich.de>
Date		: 2008-06-01 8:37 (29 days old)
References	: http://marc.info/?l=linux-kernel&m=121230964032247&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10861
Subject		: 2.6.26-rc4-git2 - long pause during boot
Submitter	: Chris Clayton <chris2553@googlemail.com>
Date		: 2008-06-01 4:15 (29 days old)
References	: http://marc.info/?l=linux-kernel&m=121229382917834&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
Subject		: Display artifacts on XOrg logout with PAT kernel and VESA framebuffer
Submitter	: Frans Pop <elendil@planet.nl>
Date		: 2008-05-31 14:04 (30 days old)
References	: http://lkml.org/lkml/2008/6/7/206
		  http://lkml.org/lkml/2008/6/15/119
		  http://lkml.org/lkml/2008/6/23/160


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10821
Subject		: rt25xx: lock dependency warning, association failure, and kmalloc corruption
Submitter	: Christian Casteyde <casteyde.christian@free.fr>
Date		: 2008-05-29 14:30 (32 days old)
Handled-By	: Ivo van Doorn <IvDoorn@gmail.com>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10786
Subject		: parisc: 64bit SMP does not boot on J5600
Submitter	: Domenico Andreoli <cavokz@gmail.com>
Date		: 2008-05-22 16:14 (39 days old)
References	: http://marc.info/?l=linux-kernel&m=121147328028081&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10741
Subject		: bug in `tty: BKL pushdown'?
Submitter	: Johannes Weiner <hannes@saeurebad.de>
Date		: 2008-05-18 2:16 (43 days old)
References	: http://marc.info/?l=linux-kernel&m=121107706506181&w=4
		  http://lkml.org/lkml/2008/6/16/104
Handled-By	: Alan Cox <alan@lxorguk.ukuu.org.uk>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10714
Subject		: powerpc: Badness seen on 2.6.26-rc2 with lockdep enabled
Submitter	: Balbir Singh <balbir@linux.vnet.ibm.com>
Date		: 2008-05-14 12:57 (47 days old)
References	: http://marc.info/?l=linux-kernel&m=121076917429133&w=4
Handled-By	: Benjamin Herrenschmidt <benh@kernel.crashing.org>


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10629
Subject		: 2.6.26-rc1-$sha1: RIP __d_lookup+0x8c/0x160
Submitter	: Alexey Dobriyan <adobriyan@gmail.com>
Date		: 2008-05-05 09:59 (56 days old)
References	: http://lkml.org/lkml/2008/5/5/28
Handled-By	: Paul E. McKenney <paulmck@linux.vnet.ibm.com>


Regressions with patches
------------------------

Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10958
Subject		: LMSENSORS: 2.6.26-rc, enabling ACPI Termal Zone support costs sensors
Submitter	: Rene Herman <rene.herman@keyaccess.nl>
Date		: 2008-06-22 0:47 (8 days old)
References	: http://marc.info/?l=linux-kernel&m=121409569819064&w=4
Handled-By	: Hans de Goede <j.w.r.degoede@hhs.nl>
		  Rene Herman <rene.herman@keyaccess.nl>
Patch		: http://lkml.org/lkml/2008/6/22/83


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10956
Subject		: v2.6.26-rc7: BUG: unable to handle kernel NULL pointer dereference
Submitter	: Vegard Nossum <vegard.nossum@gmail.com>
Date		: 2008-06-22 12:56 (8 days old)
References	: http://marc.info/?l=linux-kernel&m=121413950227884&w=4
Handled-By	: Rusty Russell <rusty@rustcorp.com.au>
		  Zhang, Yanmin <yanmin_zhang@linux.intel.com>
		  Mike Travis <travis@sgi.com>
Patch		: http://marc.info/?l=linux-kernel&m=121429495914484&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10927
Subject		: Dell laptops: reboot instead of resume
Submitter	: Kirill A. Shutemov <kirill@shutemov.name>
Date		: 2008-06-16 07:31 (14 days old)
References	: http://marc.info/?l=linux-kernel&m=121446903218446&w=4
Handled-By	: H. Peter Anvin <hpa@kernel.org>
Patch		: http://bugzilla.kernel.org/attachment.cgi?id=16549&action=view


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10918
Subject		: 2.6.26-rc5: SLUB debug, lockdep warning...
Submitter	: Daniel J Blueman <daniel.blueman@gmail.com>
Date		: 2008-06-14 10:54 (16 days old)
References	: http://marc.info/?l=linux-kernel&m=121344091109597&w=4
Handled-By	: Vegard Nossum <vegard.nossum@gmail.com>
		  Daniel J Blueman <daniel.blueman@gmail.com>
Patch		: http://bugzilla.kernel.org/show_bug.cgi?id=10918#c2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10860
Subject		: total system freeze at boot with 2.6.26-rc
Submitter	: Christian Casteyde <casteyde.christian@free.fr>
Date		: 2008-06-05 12:38 (25 days old)
Handled-By	: Tejun Heo <htejun@gmail.com>
Patch		: http://bugzilla.kernel.org/attachment.cgi?id=16556


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10815
Subject		: 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0
Submitter	: Alexey Dobriyan <adobriyan@gmail.com>
Date		: 2008-05-27 09:23 (34 days old)
References	: http://lkml.org/lkml/2008/5/27/9
		  http://lkml.org/lkml/2008/6/14/87
Handled-By	: Oleg Nesterov <oleg@tv-sign.ru>
		  Linus Torvalds <torvalds@linux-foundation.org>
		  Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Patch		: http://lkml.org/lkml/2008/5/28/16


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10730
Subject		: build issue #503 for v2.6.26-rc2-433-gf26a398 : undefined reference to `request_firmware'
Submitter	: Toralf Förster <toralf.foerster@gmx.de>
Date		: 2008-05-16 17:06 (45 days old)
References	: http://marc.info/?l=linux-kernel&m=121095777616792&w=4
Handled-By	: James Bottomley <James.Bottomley@HansenPartnership.com>
Patch		: http://marc.info/?l=linux-scsi&m=121101871800303&w=4


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10726
Subject		: x86-64 NODES_SHIFT compile failure.
Submitter	: Dave Jones <davej@codemonkey.org.uk>
Date		: 2008-05-16 12:54 (45 days old)
References	: http://lkml.org/lkml/2008/5/16/312
Handled-By	: Mike Travis <travis@sgi.com>
Patch		: http://lkml.org/lkml/2008/5/16/343


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10725
Subject		: USB Mass storage mount fails: Write protect on
Submitter	: Maciej Rutecki <maciej.rutecki@gmail.com>
Date		: 2008-05-16 14:55 (45 days old)
References	: http://marc.info/?l=linux-kernel&m=121095168003572&w=4
Handled-By	: Alan Stern <stern@rowland.harvard.edu>
Patch		: http://marc.info/?l=linux-scsi&m=121433068314568&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10724
Subject		: ACPI: EC: GPE storm detected, disabling EC GPE
Submitter	: Justin Mattock <justinmattock@gmail.com>
Date		: 2008-05-16 6:17 (45 days old)
References	: http://marc.info/?l=linux-kernel&m=121091875711824&w=4
		  http://lkml.org/lkml/2008/5/18/168
		  http://lkml.org/lkml/2008/5/25/195
Patch		: http://bugzilla.kernel.org/attachment.cgi?id=16364&action=view
		  http://bugzilla.kernel.org/attachment.cgi?id=16365&action=view


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10493
Subject		: mips BCM47XX compile error
Submitter	: Adrian Bunk <adrian.bunk@movial.fi>
Date		: 2008-04-20 17:07 (71 days old)
References	: http://lkml.org/lkml/2008/4/20/34
		  http://lkml.org/lkml/2008/5/12/30
		  http://lkml.org/lkml/2008/5/18/131
		  http://lkml.org/lkml/2008/5/31/202
		  http://lkml.org/lkml/2008/6/7/154
Patch		: http://marc.info/?l=linux-kernel&m=120876451216558&w=2


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=9791
Subject		: Clock is running too fast^Wslow using acpi_pm clocksource
Submitter	: tosn00j02@sneakemail.com
Date		: 2008-05-03 05:09 (58 days old)
Handled-By	: Maciej W. Rozycki <macro@linux-mips.org>
Patch		: http://bugzilla.kernel.org/attachment.cgi?id=16180


For details, please visit the bug entries and follow the links given in
references.

As you can see, there is a Bugzilla entry for each of the listed regressions.
There also is a Bugzilla entry used for tracking the regressions from 2.6.25,
unresolved as well as resolved, at:

http://bugzilla.kernel.org/show_bug.cgi?id=10492

Please let me know if there are any Bugzilla entries that should be added to
the list in there.

Thanks,
Rafael

[Bug #10493] mips BCM47XX compile error

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10493
Subject		: mips BCM47XX compile error
Submitter	: Adrian Bunk <adrian.bunk@movial.fi>
Date		: 2008-04-20 17:07 (71 days old)
References	: http://lkml.org/lkml/2008/4/20/34
		  http://lkml.org/lkml/2008/5/12/30
		  http://lkml.org/lkml/2008/5/18/131
		  http://lkml.org/lkml/2008/5/31/202
		  http://lkml.org/lkml/2008/6/7/154
Patch		: http://marc.info/?l=linux-kernel&m=120876451216558&w=2

[Bug #10629] 2.6.26-rc1-$sha1: RIP __d_lookup+0x8c/0x160

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10629
Subject		: 2.6.26-rc1-$sha1: RIP __d_lookup+0x8c/0x160
Submitter	: Alexey Dobriyan <adobriyan@gmail.com>
Date		: 2008-05-05 09:59 (56 days old)
References	: http://lkml.org/lkml/2008/5/5/28
Handled-By	: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

[Bug #10714] powerpc: Badness seen on 2.6.26-rc2 with lockdep enabled

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10714
Subject		: powerpc: Badness seen on 2.6.26-rc2 with lockdep enabled
Submitter	: Balbir Singh <balbir@linux.vnet.ibm.com>
Date		: 2008-05-14 12:57 (47 days old)
References	: http://marc.info/?l=linux-kernel&m=121076917429133&w=4
Handled-By	: Benjamin Herrenschmidt <benh@kernel.crashing.org>

[Bug #10724] ACPI: EC: GPE storm detected, disabling EC GPE

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10724
Subject		: ACPI: EC: GPE storm detected, disabling EC GPE
Submitter	: Justin Mattock <justinmattock@gmail.com>
Date		: 2008-05-16 6:17 (45 days old)
References	: http://marc.info/?l=linux-kernel&m=121091875711824&w=4
		  http://lkml.org/lkml/2008/5/18/168
		  http://lkml.org/lkml/2008/5/25/195
Patch		: http://bugzilla.kernel.org/attachment.cgi?id=16364&action=view
		  http://bugzilla.kernel.org/attachment.cgi?id=16365&action=view

[Bug #10725] USB Mass storage mount fails: Write protect on

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10725
Subject		: USB Mass storage mount fails: Write protect on
Submitter	: Maciej Rutecki <maciej.rutecki@gmail.com>
Date		: 2008-05-16 14:55 (45 days old)
References	: http://marc.info/?l=linux-kernel&m=121095168003572&w=4
Handled-By	: Alan Stern <stern@rowland.harvard.edu>
Patch		: http://marc.info/?l=linux-scsi&m=121433068314568&w=2

[Bug #10726] x86-64 NODES_SHIFT compile failure.

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10726
Subject		: x86-64 NODES_SHIFT compile failure.
Submitter	: Dave Jones <davej@codemonkey.org.uk>
Date		: 2008-05-16 12:54 (45 days old)
References	: http://lkml.org/lkml/2008/5/16/312
Handled-By	: Mike Travis <travis@sgi.com>
Patch		: http://lkml.org/lkml/2008/5/16/343

[Bug #10730] build issue #503 for v2.6.26-rc2-433-gf26a398 : undefined reference to `request_firmware'

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10730
Subject		: build issue #503 for v2.6.26-rc2-433-gf26a398 : undefined reference to `request_firmware'
Submitter	: Toralf Förster <toralf.foerster@gmx.de>
Date		: 2008-05-16 17:06 (45 days old)
References	: http://marc.info/?l=linux-kernel&m=121095777616792&w=4
Handled-By	: James Bottomley <James.Bottomley@HansenPartnership.com>
Patch		: http://marc.info/?l=linux-scsi&m=121101871800303&w=4

[Bug #10741] bug in `tty: BKL pushdown'?

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10741
Subject		: bug in `tty: BKL pushdown'?
Submitter	: Johannes Weiner <hannes@saeurebad.de>
Date		: 2008-05-18 2:16 (43 days old)
References	: http://marc.info/?l=linux-kernel&m=121107706506181&w=4
		  http://lkml.org/lkml/2008/6/16/104
Handled-By	: Alan Cox <alan@lxorguk.ukuu.org.uk>

[Bug #10786] parisc: 64bit SMP does not boot on J5600

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10786
Subject		: parisc: 64bit SMP does not boot on J5600
Submitter	: Domenico Andreoli <cavokz@gmail.com>
Date		: 2008-05-22 16:14 (39 days old)
References	: http://marc.info/?l=linux-kernel&m=121147328028081&w=4

[Bug #10815] 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10815
Subject		: 2.6.26-rc4: RIP find_pid_ns+0x6b/0xa0
Submitter	: Alexey Dobriyan <adobriyan@gmail.com>
Date		: 2008-05-27 09:23 (34 days old)
References	: http://lkml.org/lkml/2008/5/27/9
		  http://lkml.org/lkml/2008/6/14/87
Handled-By	: Oleg Nesterov <oleg@tv-sign.ru>
		  Linus Torvalds <torvalds@linux-foundation.org>
		  Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Patch		: http://lkml.org/lkml/2008/5/28/16

[Bug #10821] rt25xx: lock dependency warning, association failure, and kmalloc corruption

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10821
Subject		: rt25xx: lock dependency warning, association failure, and kmalloc corruption
Submitter	: Christian Casteyde <casteyde.christian@free.fr>
Date		: 2008-05-29 14:30 (32 days old)
Handled-By	: Ivo van Doorn <IvDoorn@gmail.com>

[Bug #10860] total system freeze at boot with 2.6.26-rc

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10860
Subject		: total system freeze at boot with 2.6.26-rc
Submitter	: Christian Casteyde <casteyde.christian@free.fr>
Date		: 2008-06-05 12:38 (25 days old)
Handled-By	: Tejun Heo <htejun@gmail.com>
Patch		: http://bugzilla.kernel.org/attachment.cgi?id=16556

[Bug #10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
Subject		: Display artifacts on XOrg logout with PAT kernel and VESA framebuffer
Submitter	: Frans Pop <elendil@planet.nl>
Date		: 2008-05-31 14:04 (30 days old)
References	: http://lkml.org/lkml/2008/6/7/206
		  http://lkml.org/lkml/2008/6/15/119
		  http://lkml.org/lkml/2008/6/23/160

[Bug #10861] 2.6.26-rc4-git2 - long pause during boot

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10861
Subject		: 2.6.26-rc4-git2 - long pause during boot
Submitter	: Chris Clayton <chris2553@googlemail.com>
Date		: 2008-06-01 4:15 (29 days old)
References	: http://marc.info/?l=linux-kernel&m=121229382917834&w=4

[Bug #10865] Oops trying to mount an ntfs partition on thinkpad

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10865
Subject		: Oops trying to mount an ntfs partition on thinkpad
Submitter	: Alex Romosan <romosan@sycorax.lbl.gov>
Date		: 2008-06-05 14:47 (25 days old)
References	: http://marc.info/?l=linux-kernel&m=121267834421414&w=4

[Bug #10868] Oops on loading ipaq module since 2.6.26, prevents use of device

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10868
Subject		: Oops on loading ipaq module since 2.6.26, prevents use of device
Submitter	: Adam Williamson <awilliamson@mandriva.com>
Date		: 2008-06-05 17:39 (25 days old)
References	: http://marc.info/?t=121287647600002&r=1&w=4
Handled-By	: Oliver Neukum <oliver@neukum.org>

[Bug #10862] forcedeth: lockdep warning on ethtool -s

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10862
Subject		: forcedeth: lockdep warning on ethtool -s
Submitter	: Tobias Diedrich <ranma+kernel@tdiedrich.de>
Date		: 2008-06-01 8:37 (29 days old)
References	: http://marc.info/?l=linux-kernel&m=121230964032247&w=4

[Bug #10872] x86_64 boot hang when CONFIG_NUMA=n

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10872
Subject		: x86_64 boot hang when CONFIG_NUMA=n
Submitter	: Randy Dunlap <randy.dunlap@oracle.com>
Date		: 2008-06-05 21:50 (25 days old)
References	: http://marc.info/?l=linux-kernel&m=121270308607116&w=4
		  http://lkml.org/lkml/2008/6/11/355
		  http://lkml.org/lkml/2008/6/15/117
Handled-By	: Yinghai Lu <yhlu.kernel@gmail.com>

[Bug #10906] repeatable slab corruption with LTP msgctl08

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10906
Subject		: repeatable slab corruption with LTP msgctl08
Submitter	: Andrew Morton <akpm@linux-foundation.org>
Date		: 2008-06-12 5:13 (18 days old)
References	: http://marc.info/?l=linux-kernel&m=121324775927704&w=4
Handled-By	: Pekka J Enberg <penberg@cs.helsinki.fi>
		  Christoph Lameter <clameter@sgi.com>
		  Manfred Spraul <manfred@colorfullife.com>
		  Andi Kleen <andi@firstfloor.org>

[Bug #10918] 2.6.26-rc5: SLUB debug, lockdep warning...

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10918
Subject		: 2.6.26-rc5: SLUB debug, lockdep warning...
Submitter	: Daniel J Blueman <daniel.blueman@gmail.com>
Date		: 2008-06-14 10:54 (16 days old)
References	: http://marc.info/?l=linux-kernel&m=121344091109597&w=4
Handled-By	: Vegard Nossum <vegard.nossum@gmail.com>
		  Daniel J Blueman <daniel.blueman@gmail.com>
Patch		: http://bugzilla.kernel.org/show_bug.cgi?id=10918#c2

[Bug #10919] [regression] display dimming is slow and laggy - Acer Travelmate 661lci

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10919
Subject		: [regression] display dimming is slow and laggy - Acer Travelmate 661lci
Submitter	: Maximilian Engelhardt <maxi@daemonizer.de>
Date		: 2008-06-14 22:31 (16 days old)
References	: http://marc.info/?l=linux-kernel&m=121348428828320&w=4

[Bug #10923] System turns off during wake from S3, Wake Regression from 2.6.25 (SMP related)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10923
Subject		: System turns off during wake from S3, Wake Regression from 2.6.25 (SMP related)
Submitter	: Dionisus Torimens <djtm@gmx.net>
Date		: 2008-06-15 16:24 (15 days old)

[Bug #10954] hda_intel: azx_get_response timeout, switching to polling mode: last cmd=0x011f000c

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10954
Subject		: hda_intel: azx_get_response timeout, switching to polling mode: last cmd=0x011f000c
Submitter	: Justin Mattock <justinmattock@gmail.com>
Date		: 2008-06-21 2:05 (9 days old)
References	: http://marc.info/?l=linux-kernel&m=121401399622190&w=4

[Bug #10927] Dell laptops: reboot instead of resume

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10927
Subject		: Dell laptops: reboot instead of resume
Submitter	: Kirill A. Shutemov <kirill@shutemov.name>
Date		: 2008-06-16 07:31 (14 days old)
References	: http://marc.info/?l=linux-kernel&m=121446903218446&w=4
Handled-By	: H. Peter Anvin <hpa@kernel.org>
Patch		: http://bugzilla.kernel.org/attachment.cgi?id=16549&action=view

[Bug #10955] v2.6.26-rc7: BUG task_struct: Poison overwritten

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10955
Subject		: v2.6.26-rc7: BUG task_struct: Poison overwritten
Submitter	: Vegard Nossum <vegard.nossum@gmail.com>
Date		: 2008-06-21 19:24 (9 days old)
References	: http://marc.info/?l=linux-kernel&m=121407641925121&w=4
Handled-By	: Peter Zijlstra <a.p.zijlstra@chello.nl>

[Bug #10956] v2.6.26-rc7: BUG: unable to handle kernel NULL pointer dereference

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10956
Subject		: v2.6.26-rc7: BUG: unable to handle kernel NULL pointer dereference
Submitter	: Vegard Nossum <vegard.nossum@gmail.com>
Date		: 2008-06-22 12:56 (8 days old)
References	: http://marc.info/?l=linux-kernel&m=121413950227884&w=4
Handled-By	: Rusty Russell <rusty@rustcorp.com.au>
		  Zhang, Yanmin <yanmin_zhang@linux.intel.com>
		  Mike Travis <travis@sgi.com>
Patch		: http://marc.info/?l=linux-kernel&m=121429495914484&w=4

[Bug #10957] pata_pcmcia with Sandisk Extreme III 8GB

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10957
Subject		: pata_pcmcia with Sandisk Extreme III 8GB
Submitter	: Komuro <komurojun-mbn@nifty.com>
Date		: 2008-06-07 13:37 (23 days old)
References	: http://marc.info/?l=linux-kernel&m=121284627119861&w=4
Handled-By	: Tejun Heo <htejun@gmail.com>
		  Dominik Brodowski <linux@dominikbrodowski.net>

[Bug #10958] LMSENSORS: 2.6.26-rc, enabling ACPI Termal Zone support costs sensors

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10958
Subject		: LMSENSORS: 2.6.26-rc, enabling ACPI Termal Zone support costs sensors
Submitter	: Rene Herman <rene.herman@keyaccess.nl>
Date		: 2008-06-22 0:47 (8 days old)
References	: http://marc.info/?l=linux-kernel&m=121409569819064&w=4
Handled-By	: Hans de Goede <j.w.r.degoede@hhs.nl>
		  Rene Herman <rene.herman@keyaccess.nl>
Patch		: http://lkml.org/lkml/2008/6/22/83

[Bug #10959] stuck tcp connections 2.6.26-rc7

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10959
Subject		: stuck tcp connections 2.6.26-rc7
Submitter	: Justin Mattock <justinmattock@gmail.com>
Date		: 2008-06-22 18:09 (8 days old)
References	: http://marc.info/?l=linux-kernel&m=121415821219644&w=4

[Bug #10960] 2.6.26-rc: SPARC: Sun Ultra 10 can not boot

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10960
Subject		: 2.6.26-rc: SPARC: Sun Ultra 10 can not boot
Submitter	: Alexander Beregalov <a.beregalov@gmail.com>
Date		: 2008-06-19 14:07 (11 days old)
References	: http://marc.info/?l=linux-kernel&m=121388456519637&w=4
Handled-By	: David Miller <davem@davemloft.net>

[Bug #10961] 2.6.26-rc: nfsd hangs for a few sec

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10961
Subject		: 2.6.26-rc: nfsd hangs for a few sec
Submitter	: Alexander Beregalov <a.beregalov@gmail.com>
Date		: 2008-06-21 12:57 (9 days old)
References	: http://marc.info/?l=linux-kernel&m=121405308328004&w=4
		  http://marc.info/?l=linux-kernel&m=121412880115289&w=4
Handled-By	: Linus Torvalds <torvalds@linux-foundation.org>
		  Mel Gorman <mel@csn.ul.ie>
		  Christoph Lameter <clameter@sgi.com>

[Bug #10962] 2.6.26-rc2 WARNING from usb-serial, and then my gps is dead

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10962
Subject		: 2.6.26-rc2 WARNING from usb-serial, and then my gps is dead
Submitter	: Helge Hafting <helge.hafting@aitel.hist.no>
Date		: 2008-06-22 18:22 (8 days old)
References	: http://marc.info/?l=linux-kernel&m=121415899320685&w=4
Handled-By	: Greg Kroah-Hartman <greg@kroah.com>

[Bug #10965] system hang on closing T60 panel lid when in dual screen mode 2.6.26 regression

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10965
Subject		: system hang on closing T60 panel lid when in dual screen mode 2.6.26 regression
Submitter	: Franklin Piat <fpiat@bigfoot.com>
Date		: 2008-06-23 09:10 (7 days old)

[Bug #10971] radeonfb : radeon X800 family support (atombios)

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10971
Subject		: radeonfb : radeon X800 family support (atombios)
Submitter	: Jimmy.Jazz@gmx.net
Date		: 2008-06-23 14:35 (7 days old)

[Bug #10989] kernel oopses when wiggling the mouse to make it known to hidd

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10989
Subject		: kernel oopses when wiggling the mouse to make it known to hidd
Submitter	: Daniel Vetter <daniel@ffwll.ch>
Date		: 2008-06-26 10:32 (4 days old)

[Bug #9791] Clock is running too fast^Wslow using acpi_pm clocksource

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=9791
Subject		: Clock is running too fast^Wslow using acpi_pm clocksource
Submitter	: tosn00j02@sneakemail.com
Date		: 2008-05-03 05:09 (58 days old)
Handled-By	: Maciej W. Rozycki <macro@linux-mips.org>
Patch		: http://bugzilla.kernel.org/attachment.cgi?id=16180

[Bug #11008] after laptop re-dock: usb-storage device no longer detected

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11008
Subject		: after laptop re-dock: usb-storage device no longer detected
Submitter	: Lukas Hejtmanek <xhejtman@ics.muni.cz>
Date		: 2008-06-26 17:37 (4 days old)
References	: http://lkml.org/lkml/2008/6/26/391
Handled-By	: Alan Stern <stern@rowland.harvard.edu>

[Bug #11009] No console on Riva TNT since 2.6.26-0.rc4

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11009
Subject		: No console on Riva TNT since 2.6.26-0.rc4
Submitter	: Quel Qun <kelk1@comcast.net>
Date		: 2008-06-26 20:04 (4 days old)
References	: http://marc.info/?l=linux-kernel&m=121451344229718&w=4

[Bug #11007] [BISECT] Boot failure on ia64.

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11007
Subject		: [BISECT] Boot failure on ia64.
Submitter	: Robin Holt <holt@sgi.com>
Date		: 2008-06-24 07:30 (6 days old)
References	: http://lkml.org/lkml/2008/6/24/196
Handled-By	: Alex Chiang <achiang@hp.com>

[Bug #11006] 2.6.26-rc6: pcmcia stopped working

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11006
Subject		: 2.6.26-rc6: pcmcia stopped working
Submitter	: Pavel Machek <pavel@suse.cz>
Date		: 2008-06-22 22:40 (8 days old)
References	: http://marc.info/?l=linux-kernel&m=121420740806363&w=4
		  http://marc.info/?t=121439185700001&r=1&w=4
Handled-By	: Tejun Heo <htejun@gmail.com>

[Bug #10985] backlight doesn't come on after resume with i915 video

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10985
Subject		: backlight doesn't come on after resume with i915 video
Submitter	: Jon Dowland <jon+bugzilla.kernel.org@alcopop.org>
Date		: 2008-06-26 02:09 (4 days old)

[Bug #11005] 2.6.26-rc5-git2: snd-emu10k1 does not work

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11005
Subject		: 2.6.26-rc5-git2: snd-emu10k1 does not work
Submitter	: Rafael J. Wysocki <rjw@sisk.pl>
Date		: 2008-06-08 21:03 (22 days old)
References	: http://marc.info/?l=linux-kernel&m=121295902917875&w=4
Handled-By	: Takashi Iwai <tiwai@suse.de>

[Bug #10984] MMC print trace information when resume from suspend

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10984
Subject		: MMC print trace information when resume from suspend
Submitter	: Jie Luo <clotho67@gmail.com>
Date		: 2008-06-26 01:15 (4 days old)

Re: [Bug #10958] LMSENSORS: 2.6.26-rc, enabling ACPI Termal Zone support costs sensors

[Rene Herman]

On 29-06-08 20:18, Rafael J. Wysocki wrote:

> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10958
> Subject	: LMSENSORS: 2.6.26-rc, enabling ACPI Termal Zone support costs sensors
> Submitter	: Rene Herman <rene.herman@keyaccess.nl>
> Date		: 2008-06-22 0:47 (8 days old)
> References	: http://marc.info/?l=linux-kernel&m=121409569819064&w=4
> Handled-By	: Hans de Goede <j.w.r.degoede@hhs.nl>
> 		  Rene Herman <rene.herman@keyaccess.nl>
> Patch		: http://lkml.org/lkml/2008/6/22/83

An updated version of the patch as linked to above has been merged to 
the ACPI release branch (for details, see the bugzilla entry) and will 
be pushed to Linus for .26.

Rene.

Re: [Bug #10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Frans Pop]

On Sunday 29 June 2008, you wrote:
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.
>
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
> Subject	: Display artifacts on XOrg logout with PAT kernel and VESA
> 		  framebuffer

Yes.

Re: [Bug #10959] stuck tcp connections 2.6.26-rc7

[Ray Lee]

On Sun, Jun 29, 2008 at 11:18 AM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.
>
>
> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=10959
> Subject         : stuck tcp connections 2.6.26-rc7
> Submitter       : Justin Mattock <justinmattock@gmail.com>
> Date            : 2008-06-22 18:09 (8 days old)
> References      : http://marc.info/?l=linux-kernel&m=121415821219644&w=4

Last word on this was that it was traced down to a problem with
madwifi / wpa_supplicant that was independent of kernel version
(reverting to an earlier wpa_supplicant fixed the problem), so I think
this can be closed.

Re: [Bug #10493] mips BCM47XX compile error

[Adrian Bunk]

On Sun, Jun 29, 2008 at 08:15:29PM +0200, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.

yes

> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10493
> Subject		: mips BCM47XX compile error
> Submitter	: Adrian Bunk <adrian.bunk@movial.fi>
> Date		: 2008-04-20 17:07 (71 days old)
> References	: http://lkml.org/lkml/2008/4/20/34
> 		  http://lkml.org/lkml/2008/5/12/30
> 		  http://lkml.org/lkml/2008/5/18/131
> 		  http://lkml.org/lkml/2008/5/31/202
> 		  http://lkml.org/lkml/2008/6/7/154
> Patch		: http://marc.info/?l=linux-kernel&m=120876451216558&w=2

cu
Adrian

Re: [Bug #10959] stuck tcp connections 2.6.26-rc7

[Justin Mattock]

On Sun, Jun 29, 2008 at 8:04 PM, Ray Lee <ray@madrabbit.org> wrote:
> On Sun, Jun 29, 2008 at 11:18 AM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> This message has been generated automatically as a part of a report
>> of recent regressions.
>>
>> The following bug entry is on the current list of known regressions
>> from 2.6.25.  Please verify if it still should be listed.
>>
>>
>> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=10959
>> Subject         : stuck tcp connections 2.6.26-rc7
>> Submitter       : Justin Mattock <justinmattock@gmail.com>
>> Date            : 2008-06-22 18:09 (8 days old)
>> References      : http://marc.info/?l=linux-kernel&m=121415821219644&w=4
>
> Last word on this was that it was traced down to a problem with
> madwifi / wpa_supplicant that was independent of kernel version
> (reverting to an earlier wpa_supplicant fixed the problem), so I think
> this can be closed.
>

Yes; That was the case with me, I'm not too sure about the other
reports. But from over here I'm a yes too closing.
regards;

-- 
Justin P. Mattock

Re: [Bug #10954] hda_intel: azx_get_response timeout, switching to polling mode: last cmd=0x011f000c

[Justin Mattock]

On Sun, Jun 29, 2008 at 6:18 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.
>
>
> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=10954
> Subject         : hda_intel: azx_get_response timeout, switching to polling mode: last cmd=0x011f000c
> Submitter       : Justin Mattock <justinmattock@gmail.com>
> Date            : 2008-06-21 2:05 (9 days old)
> References      : http://marc.info/?l=linux-kernel&m=121401399622190&w=4
>
>
>

yes; still seeing this pop up,(problem is I can't reproduce this)

-- 
Justin P. Mattock

Re: [Bug #10724] ACPI: EC: GPE storm detected, disabling EC GPE

[Justin Mattock]

On Sun, Jun 29, 2008 at 6:18 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.
>
>
> Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=10724
> Subject         : ACPI: EC: GPE storm detected, disabling EC GPE
> Submitter       : Justin Mattock <justinmattock@gmail.com>
> Date            : 2008-05-16 6:17 (45 days old)
> References      : http://marc.info/?l=linux-kernel&m=121091875711824&w=4
>                  http://lkml.org/lkml/2008/5/18/168
>                  http://lkml.org/lkml/2008/5/25/195
> Patch           : http://bugzilla.kernel.org/attachment.cgi?id=16364&action=view
>                  http://bugzilla.kernel.org/attachment.cgi?id=16365&action=view
>
>
>

yes; still having this message show up. with a patched kernel and
external modules, and with
a fresh kernel with no external modules, or patches.

-- 
Justin P. Mattock

Re: [Bug #10954] hda_intel: azx_get_response timeout, switching to polling mode: last cmd=0x011f000c

[Ville Syrjälä]

On Sun, Jun 29, 2008 at 08:28:58PM +0000, Justin Mattock wrote:
> On Sun, Jun 29, 2008 at 6:18 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> >
> > The following bug entry is on the current list of known regressions
> > from 2.6.25.  Please verify if it still should be listed.
> >
> >
> > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=10954
> > Subject         : hda_intel: azx_get_response timeout, switching to polling mode: last cmd=0x011f000c
> > Submitter       : Justin Mattock <justinmattock@gmail.com>
> > Date            : 2008-06-21 2:05 (9 days old)
> > References      : http://marc.info/?l=linux-kernel&m=121401399622190&w=4
> >
> >
> >
> 
> yes; still seeing this pop up,(problem is I can't reproduce this)

This happened to me a few times a while back. It happened when watching
videos with mplayer. It only occured sometimes when switching from one
video file to the next. I haven't seen it in a while though.

Right now I have the HDA power save timeout set to 2 seconds. It is
possible I had it set to 1 second when I saw the problem, however I
can't be absolutely certain about that.

-- 
Ville Syrjälä
syrjala@sci.fi
http://www.sci.fi/~syrjala/

Re: [Bug #10954] hda_intel: azx_get_response timeout, switching to polling mode: last cmd=0x011f000c

[Justin Mattock]

On Sun, Jun 29, 2008 at 9:07 PM, Ville Syrjälä <syrjala@sci.fi> wrote:
> On Sun, Jun 29, 2008 at 08:28:58PM +0000, Justin Mattock wrote:
>> On Sun, Jun 29, 2008 at 6:18 PM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
>> > This message has been generated automatically as a part of a report
>> > of recent regressions.
>> >
>> > The following bug entry is on the current list of known regressions
>> > from 2.6.25.  Please verify if it still should be listed.
>> >
>> >
>> > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=10954
>> > Subject         : hda_intel: azx_get_response timeout, switching to polling mode: last cmd=0x011f000c
>> > Submitter       : Justin Mattock <justinmattock@gmail.com>
>> > Date            : 2008-06-21 2:05 (9 days old)
>> > References      : http://marc.info/?l=linux-kernel&m=121401399622190&w=4
>> >
>> >
>> >
>>
>> yes; still seeing this pop up,(problem is I can't reproduce this)
>
> This happened to me a few times a while back. It happened when watching
> videos with mplayer. It only occured sometimes when switching from one
> video file to the next. I haven't seen it in a while though.
>
> Right now I have the HDA power save timeout set to 2 seconds. It is
> possible I had it set to 1 second when I saw the problem, however I
> can't be absolutely certain about that.
>
> --
> Ville Syrjälä
> syrjala@sci.fi
> http://www.sci.fi/~syrjala/
>

Hello; thanks for the info. I'll have a look into that and see if I
can reproduce this.
regards;

-- 
Justin P. Mattock

Re: [Bug #10868] Oops on loading ipaq module since 2.6.26, prevents use of device

[Oliver Neukum]

Am Sonntag 29 Juni 2008 20:18:42 schrieb Rafael J. Wysocki:
> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10868
> Subject		: Oops on loading ipaq module since 2.6.26, prevents use of device
> Submitter	: Adam Williamson <awilliamson@mandriva.com>
> Date		: 2008-06-05 17:39 (25 days old)
> References	: http://marc.info/?t=121287647600002&r=1&w=4
> Handled-By	: Oliver Neukum <oliver@neukum.org>

It should be listed. The cause is as yet unknown.

	Regards
		Oliver

Re: [Bug #10861] 2.6.26-rc4-git2 - long pause during boot

[Chris Clayton]

Rafael

On Sunday 29 June 2008, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.
>

As far as I'm concerned, the entry can be closed.. As I've said before, the 
patch did have a bad effect on existing user space, but, as Kay pointed out, 
there's no getting away from the fact that the rule in Slackware rules 
distributed with udev is a bad rule. the Slackware distribution does not 
include that rule in its udev rules.

I assume Kay will fix it in the udev package.

>
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10861
> Subject		: 2.6.26-rc4-git2 - long pause during boot
> Submitter	: Chris Clayton <chris2553@googlemail.com>
> Date		: 2008-06-01 4:15 (29 days old)
> References	: http://marc.info/?l=linux-kernel&m=121229382917834&w=4

Thanks,

Chris

-- 
Beauty is in the eye of the beerholder.

Re: [Bug #10861] 2.6.26-rc4-git2 - long pause during boot

[Kay Sievers]

On Mon, 2008-06-30 at 16:01 +0000, Chris Clayton wrote:
> On Sunday 29 June 2008, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> >
> > The following bug entry is on the current list of known regressions
> > from 2.6.25.  Please verify if it still should be listed.
> >
> 
> As far as I'm concerned, the entry can be closed..

I think so too.

> As I've said before, the 
> patch did have a bad effect on existing user space, but, as Kay pointed out, 
> there's no getting away from the fact that the rule in Slackware rules 
> distributed with udev is a bad rule. the Slackware distribution does not 
> include that rule in its udev rules.
> 
> I assume Kay will fix it in the udev package.

It was fixed in the udev package on 11 Mar 2007. But since a while, the
whole rule is deleted, as it is not needed for newer kernels, which have
proper SCSI sysfs timing.

Thanks,
Kay

Re: [Bug #11005] 2.6.26-rc5-git2: snd-emu10k1 does not work

[Rafael J. Wysocki]

On Sunday, 29 of June 2008, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=11005
> Subject		: 2.6.26-rc5-git2: snd-emu10k1 does not work
> Submitter	: Rafael J. Wysocki <rjw@sisk.pl>
> Date		: 2008-06-08 21:03 (22 days old)
> References	: http://marc.info/?l=linux-kernel&m=121295902917875&w=4
> Handled-By	: Takashi Iwai <tiwai@suse.de>

It's not a recent regression, dropped from the list.

Thanks,
Rafael

Re: [Bug #10961] 2.6.26-rc: nfsd hangs for a few sec

[Mel Gorman]

On (29/06/08 20:18), Rafael J. Wysocki didst pronounce:
> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10961
> Subject		: 2.6.26-rc: nfsd hangs for a few sec
> Submitter	: Alexander Beregalov <a.beregalov@gmail.com>
> Date		: 2008-06-21 12:57 (9 days old)
> References	: http://marc.info/?l=linux-kernel&m=121405308328004&w=4
> 		  http://marc.info/?l=linux-kernel&m=121412880115289&w=4
> Handled-By	: Linus Torvalds <torvalds@linux-foundation.org>
> 		  Mel Gorman <mel@csn.ul.ie>
> 		  Christoph Lameter <clameter@sgi.com>

I still have no useful reaction to this. According to Christoph Hellwig,
this lockup has been appearing since lockdep was introduced but for some
reason is easier to trigger now. It bisected to the two-zonelist changes
but it still looks like a red herring as I cannot see how reclaim has
changed significantly as a result of that patch.

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab

Re: [Bug #10957] pata_pcmcia with Sandisk Extreme III 8GB

[Komuro]

Hi,

This problem is not fixed yet.



Best Regards
Komuro


> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.
> 
> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10957
> Subject		: pata_pcmcia with Sandisk Extreme III 8GB
> Submitter	: Komuro <komurojun-mbn@nifty.com>
> Date		: 2008-06-07 13:37 (23 days old)
> References	: http://marc.info/?l=linux-kernel&m=121284627119861&w=4
> Handled-By	: Tejun Heo <htejun@gmail.com>
> 		  Dominik Brodowski <linux@dominikbrodowski.net>
> 
> 

Re: [Bug #10961] 2.6.26-rc: nfsd hangs for a few sec

[Alexander Beregalov]

2008/7/1 Mel Gorman <mel@csn.ul.ie>:
> I still have no useful reaction to this. According to Christoph Hellwig,
> this lockup has been appearing since lockdep was introduced but for some
> reason is easier to trigger now. It bisected to the two-zonelist changes
> but it still looks like a red herring as I cannot see how reclaim has
> changed significantly as a result of that patch.

Do you wait reaction from me? Can I help?
As I mentioned, the lockup does not happen when lockdep is disabled.

Re: 2.6.26-rc8: Reported regressions from 2.6.25

[Stefan Becker]

Hi Rafael,

Rafael J. Wysocki <rjw <at> sisk.pl> writes:
> 
> This message contains a list of some regressions from 2.6.25, for which there
> are no fixes in the mainline I know of.  If any of them have been fixed
> already, please let me know.

I started a discussion about a USB lockup regression for 2.6.24/25 under the
following thread:

<http://thread.gmane.org/gmane.linux.kernel/696589>

I prepared a patch for 2.6.26-final and sent it to Greg:

<http://article.gmane.org/gmane.linux.usb.general/6996>

This will fix IRQF_SHARED|IRQF_DISABLED at least for USB and probably solve
various problems people have reported...

Regards,

     Stefan

Re: [Bug #10865] Oops trying to mount an ntfs partition on thinkpad

[Alex Romosan]

"Rafael J. Wysocki" <rjw@sisk.pl> writes:

> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.
>
>
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10865
> Subject		: Oops trying to mount an ntfs partition on thinkpad
> Submitter	: Alex Romosan <romosan@sycorax.lbl.gov>
> Date		: 2008-06-05 14:47 (25 days old)
> References	: http://marc.info/?l=linux-kernel&m=121267834421414&w=4
>
>

sorry for the delay, just came back from vacation. the oops still
happens with 2.6.26-rc8.

--alex--

-- 
| I believe the moment is at hand when, by a paranoiac and active |
|  advance of the mind, it will be possible (simultaneously with  |
|  automatism and other passive states) to systematize confusion  |
|  and thus to help to discredit completely the world of reality. |

Re: [Bug #10961] 2.6.26-rc: nfsd hangs for a few sec

[Mel Gorman]

On (01/07/08 18:04), Alexander Beregalov didst pronounce:
> 2008/7/1 Mel Gorman <mel@csn.ul.ie>:
> > I still have no useful reaction to this. According to Christoph Hellwig,
> > this lockup has been appearing since lockdep was introduced but for some
> > reason is easier to trigger now. It bisected to the two-zonelist changes
> > but it still looks like a red herring as I cannot see how reclaim has
> > changed significantly as a result of that patch.
> 
> Do you wait reaction from me? Can I help?
> As I mentioned, the lockup does not happen when lockdep is disabled.
> 

Sorry for the slow response Alexander.

This bug is likely fixed by commit 494de90098784b8e2797598cefdd34188884ec2e
which will be visible publicly later when maintenance on master.kernel.org
finishes. I included it below for convenience.

The lockdep warning still exists but it is a false positive and should be
relatively hard to trigger again. It would be nice to have confirmation
of this.

commit 494de90098784b8e2797598cefdd34188884ec2e
Author: Mel Gorman <mel@csn.ul.ie>
Date:   Thu Jul 3 05:27:51 2008 +0100

    Do not overwrite nr_zones on !NUMA when initialising zlcache_ptr
    
    The non-NUMA case of build_zonelist_cache() would initialize the
    zlcache_ptr for both node_zonelists[] to NULL.
    
    Which is problematic, since non-NUMA only has a single node_zonelists[]
    entry, and trying to zero the non-existent second one just overwrote the
    nr_zones field instead.
    
    As kswapd uses this value to determine what reclaim work is necessary,
    the result is that kswapd never reclaims.  This causes processes to
    stall frequently in low-memory situations as they always direct reclaim.
    This patch initialises zlcache_ptr correctly.
    
    Signed-off-by: Mel Gorman <mel@csn.ul.ie>
    Tested-by: Dan Williams <dan.j.williams@intel.com>
    [ Simplified patch a bit ]
    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 mm/page_alloc.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 2f55295..f32fae3 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2328,7 +2328,6 @@ static void build_zonelists(pg_data_t *pgdat)
 static void build_zonelist_cache(pg_data_t *pgdat)
 {
 	pgdat->node_zonelists[0].zlcache_ptr = NULL;
-	pgdat->node_zonelists[1].zlcache_ptr = NULL;
 }
 
 #endif	/* CONFIG_NUMA */

Re: [Bug #10741] bug in `tty: BKL pushdown'?

[Johannes Weiner]

Hi,

"Rafael J. Wysocki" <rjw@sisk.pl> writes:

> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.

Yeah, it still exists.

> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10741
> Subject		: bug in `tty: BKL pushdown'?
> Submitter	: Johannes Weiner <hannes@saeurebad.de>
> Date		: 2008-05-18 2:16 (43 days old)
> References	: http://marc.info/?l=linux-kernel&m=121107706506181&w=4
> 		  http://lkml.org/lkml/2008/6/16/104
> Handled-By	: Alan Cox <alan@lxorguk.ukuu.org.uk>

	Hannes

Re: [Bug #10961] 2.6.26-rc: nfsd hangs for a few sec

[Alexander Beregalov]

2008/7/3 Mel Gorman <mel@csn.ul.ie>:
> This bug is likely fixed by commit 494de90098784b8e2797598cefdd34188884ec2e
> which will be visible publicly later when maintenance on master.kernel.org
> finishes. I included it below for convenience.
>
> The lockdep warning still exists but it is a false positive and should be
> relatively hard to trigger again. It would be nice to have confirmation
> of this.

Thanks! It helps.
No hangs and lockdep warnings now.

Rafael, please close it.

Re: [Bug #10872] x86_64 boot hang when CONFIG_NUMA=n

[Randy Dunlap]

On Sun, 29 Jun 2008 20:18:43 +0200 (CEST) Rafael J. Wysocki wrote:

> This message has been generated automatically as a part of a report
> of recent regressions.
> 
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.

Yes, boot still hangs in 2.6.26-rc8-git4 when CONFIG_NUMA=n.
CONFIG_NUMA=y boots OK.

> 
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10872
> Subject		: x86_64 boot hang when CONFIG_NUMA=n
> Submitter	: Randy Dunlap <randy.dunlap@oracle.com>
> Date		: 2008-06-05 21:50 (25 days old)
> References	: http://marc.info/?l=linux-kernel&m=121270308607116&w=4
> 		  http://lkml.org/lkml/2008/6/11/355
> 		  http://lkml.org/lkml/2008/6/15/117
> Handled-By	: Yinghai Lu <yhlu.kernel@gmail.com>


---
~Randy
Linux Plumbers Conference, 17-19 September 2008, Portland, Oregon USA
http://linuxplumbersconf.org/

[Bug #10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
Subject		: Display artifacts on XOrg logout with PAT kernel and VESA framebuffer
Submitter	: Frans Pop <elendil-EIBgga6/0yRmR6Xm/wNWPw@public.gmane.org>
Date		: 2008-05-31 14:04 (37 days old)
References	: http://lkml.org/lkml/2008/6/7/206
		  http://lkml.org/lkml/2008/6/15/119
		  http://lkml.org/lkml/2008/6/23/160

[Bug #10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
Subject		: Display artifacts on XOrg logout with PAT kernel and VESA framebuffer
Submitter	: Frans Pop <elendil@planet.nl>
Date		: 2008-05-31 14:04 (37 days old)
References	: http://lkml.org/lkml/2008/6/7/206
		  http://lkml.org/lkml/2008/6/15/119
		  http://lkml.org/lkml/2008/6/23/160

Re: [Bug #10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Frans Pop]

On Sunday 06 July 2008, you wrote:
> The following bug entry is on the current list of known regressions
> from 2.6.25.  Please verify if it still should be listed.
>
> Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
> Subject	: Display artifacts on XOrg logout with PAT kernel and VESA
> 		  framebuffer

Yes.

[Bug #10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
Subject		: Display artifacts on XOrg logout with PAT kernel and VESA framebuffer
Submitter	: Frans Pop <elendil-EIBgga6/0yRmR6Xm/wNWPw@public.gmane.org>
Date		: 2008-05-31 14:04 (44 days old)
References	: http://lkml.org/lkml/2008/6/7/206
		  http://lkml.org/lkml/2008/6/15/119
		  http://lkml.org/lkml/2008/6/23/160

[Bug #10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Rafael J. Wysocki]

This message has been generated automatically as a part of a report
of recent regressions.

The following bug entry is on the current list of known regressions
from 2.6.25.  Please verify if it still should be listed.


Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=10843
Subject		: Display artifacts on XOrg logout with PAT kernel and VESA framebuffer
Submitter	: Frans Pop <elendil@planet.nl>
Date		: 2008-05-31 14:04 (44 days old)
References	: http://lkml.org/lkml/2008/6/7/206
		  http://lkml.org/lkml/2008/6/15/119
		  http://lkml.org/lkml/2008/6/23/160

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Frans Pop]

Bug-Entry  : http://bugzilla.kernel.org/show_bug.cgi?id=10843

On Wednesday 25 June 2008, Suresh Siddha wrote:
> On Mon, Jun 23, 2008 at 05:38:59AM -0700, Frans Pop wrote:
> > On Sunday 15 June 2008, Siddha, Suresh B wrote:
> > > Frans, With or without pat, in the recent kernels (like
> > > 2.6.26-rc4/rc5 etc), ioremap() uses  UC- and PCI mmap of
> > > /sys/devices/pci.../resource (used by X) uses UC-
> > >
> > > And fb_mmap() also uses UC-.
> > >
> > > It's interesting that you don't see this artifact with "nopat".
> > > Essentially with or with out pat enabled, we use the same memory
> > > attributes. So depending on the MTRR setup (set by X server),
> > > effective memory attribute across different mappings should be same
> > > (which is UC- or WC with mtrr).
> >
> > Any progress on this issue? It's still there with -rc7, but I doubt
> > that comes as a surprise.
> >
> > Has anyone tried to reproduce this? I would think that should be
> > trivial.
> >
> > Just as a summary:
> > - Intel 82945G/GZ graphics [8086:2772] (ICH7 based system)
> > - FB_VESA=y, FRAMEBUFFER_CONSOLE=y
> > - boot with vga=791
> > - Log in to X and KDE; I do need to really log in there are no
> >   artifacts if I exit X from the kdm login dialog
> > - artifacts show on logout
> >
>
> FJP, We will try to reproduce this and getback.

Hello all,

I'd like to bring this issue to your attention once again as it is still 
present in 2.6.27-rc6.

Note also that I can trivially reproduce exactly the same behavior on 
three rather different systems. The artifacts even look similar and in 
all cases they disappear with 'nopat'.

The systems are:
Toshiba Satellite A40 laptop:
- Intel 82852/855GM Integrated Graphics Device [8086:3582]
- ICH4 based
- Mobile Intel Pentium 4 processor, i386 kernel
Intel desktop system:
- Intel 82945G/GZ Integrated Graphics Controller [8086:2772]
- ICH7 based
- Pentium D processor, x86_64 kernel
HP Compaq 2510p laptop:
- Intel Mobile GM965/GL960 Integrated Graphics Controller [8086:2a02]
- ICH8 based
- Core2 Duo processor, x86_64 kernel

Have you had any luck reproducing it?

> Your earlier responses did not give many clues.

Well, unfortunately I can only provide the info you ask for :-)

Cheers,
FJP

RE: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Pallipadi, Venkatesh]

>-----Original Message-----
>From: Frans Pop [mailto:elendil@planet.nl]
>Sent: Friday, September 12, 2008 3:54 AM
>To: Siddha, Suresh B
>Cc: Linux Kernel Mailing List; Pallipadi, Venkatesh; Ingo
>Molnar; arjan@linux.intel.com; jbarnes@virtuousgeek.org
>Subject: Re: [Bug 10843] Display artifacts on XOrg logout with
>PAT kernel and VESA framebuffer
>
>Bug-Entry  : http://bugzilla.kernel.org/show_bug.cgi?id=10843
>
>On Wednesday 25 June 2008, Suresh Siddha wrote:
>> On Mon, Jun 23, 2008 at 05:38:59AM -0700, Frans Pop wrote:
>> > On Sunday 15 June 2008, Siddha, Suresh B wrote:
>> > > Frans, With or without pat, in the recent kernels (like
>> > > 2.6.26-rc4/rc5 etc), ioremap() uses  UC- and PCI mmap of
>> > > /sys/devices/pci.../resource (used by X) uses UC-
>> > >
>> > > And fb_mmap() also uses UC-.
>> > >
>> > > It's interesting that you don't see this artifact with "nopat".
>> > > Essentially with or with out pat enabled, we use the same memory
>> > > attributes. So depending on the MTRR setup (set by X server),
>> > > effective memory attribute across different mappings
>should be same
>> > > (which is UC- or WC with mtrr).
>> >
>> > Any progress on this issue? It's still there with -rc7, but I doubt
>> > that comes as a surprise.
>> >
>> > Has anyone tried to reproduce this? I would think that should be
>> > trivial.
>> >
>> > Just as a summary:
>> > - Intel 82945G/GZ graphics [8086:2772] (ICH7 based system)
>> > - FB_VESA=y, FRAMEBUFFER_CONSOLE=y
>> > - boot with vga=791
>> > - Log in to X and KDE; I do need to really log in there are no
>> >   artifacts if I exit X from the kdm login dialog
>> > - artifacts show on logout
>> >
>>
>> FJP, We will try to reproduce this and getback.
>
>Hello all,
>
>I'd like to bring this issue to your attention once again as
>it is still
>present in 2.6.27-rc6.
>
>Note also that I can trivially reproduce exactly the same behavior on
>three rather different systems. The artifacts even look similar and in
>all cases they disappear with 'nopat'.
>
>The systems are:
>Toshiba Satellite A40 laptop:
>- Intel 82852/855GM Integrated Graphics Device [8086:3582]
>- ICH4 based
>- Mobile Intel Pentium 4 processor, i386 kernel
>Intel desktop system:
>- Intel 82945G/GZ Integrated Graphics Controller [8086:2772]
>- ICH7 based
>- Pentium D processor, x86_64 kernel
>HP Compaq 2510p laptop:
>- Intel Mobile GM965/GL960 Integrated Graphics Controller [8086:2a02]
>- ICH8 based
>- Core2 Duo processor, x86_64 kernel
>
>Have you had any luck reproducing it?
>
>> Your earlier responses did not give many clues.
>
>Well, unfortunately I can only provide the info you ask for :-)
>

Hi,

What does the output of x86/pat_memtype_list under debugfs look like?

You may need the following if you are not already mounting debugfs.
mount -t debugfs debugfs /proc/sys/debug
cat /proc/sys/debug/x86/pat_memtype_list

Thanks,
Venki

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Frans Pop]

[-- Attachment #1: Type: text/plain, Size: 210 bytes --]

On Friday 12 September 2008, Pallipadi, Venkatesh wrote:
> What does the output of x86/pat_memtype_list under debugfs look like?

I've attached that file and dmesg output for two of the machines.

Cheers,
FJP


[-- Attachment #2: pat.tgz --]
[-- Type: application/x-tgz, Size: 260902 bytes --]

RE: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Pallipadi, Venkatesh]

>-----Original Message-----
>From: Frans Pop [mailto:elendil@planet.nl]
>Sent: Friday, September 12, 2008 6:34 AM
>To: Pallipadi, Venkatesh
>Cc: Siddha, Suresh B; Linux Kernel Mailing List; Ingo Molnar;
>arjan@linux.intel.com; jbarnes@virtuousgeek.org
>Subject: Re: [Bug 10843] Display artifacts on XOrg logout with
>PAT kernel and VESA framebuffer
>
>On Friday 12 September 2008, Pallipadi, Venkatesh wrote:
>> What does the output of x86/pat_memtype_list under debugfs look like?
>
>I've attached that file and dmesg output for two of the machines.
>

OK. This is the same issue as the one on this thread here
http://www.ussg.iu.edu/hypermail/linux/kernel/0808.2/1532.html


We have too many entires in PAT list due to RAM pages being marked
UC by drivers. Unfortunately, there are no quick fixes that can fix
this for 2.6.27. However, we are aware of the problem here and
working on a more complete fix for this. We should have the patch
for it soon.

Thanks,
Venki

RE: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Pallipadi, Venkatesh]

>-----Original Message-----
>From: Pallipadi, Venkatesh
>
>>-----Original Message-----
>>From: Frans Pop [mailto:elendil@planet.nl]
>>Sent: Friday, September 12, 2008 6:34 AM
>>
>>
>>I've attached that file and dmesg output for two of the machines.
>>
>
>OK. This is the same issue as the one on this thread here
>http://www.ussg.iu.edu/hypermail/linux/kernel/0808.2/1532.html
>
>
>We have too many entires in PAT list due to RAM pages being marked
>UC by drivers. Unfortunately, there are no quick fixes that can fix
>this for 2.6.27. However, we are aware of the problem here and
>working on a more complete fix for this. We should have the patch
>for it soon.
>

Can you try the patch here
http://www.ussg.iu.edu/hypermail/linux/kernel/0809.1/2074.html
And report back whether that resolves the issue.

Thanks,
Venki

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Frans Pop]

[-- Attachment #1: Type: text/plain, Size: 1119 bytes --]

On Saturday 13 September 2008, Pallipadi, Venkatesh wrote:
> >We have too many entires in PAT list due to RAM pages being marked
> >UC by drivers. Unfortunately, there are no quick fixes that can fix
> >this for 2.6.27. However, we are aware of the problem here and
> >working on a more complete fix for this. We should have the patch
> >for it soon.
>
> Can you try the patch here
> http://www.ussg.iu.edu/hypermail/linux/kernel/0809.1/2074.html
> And report back whether that resolves the issue.

Yes, that solves the issue. The display is now free of artifacts again, 
both on logout and when I switch users in X.
The pat_memtype_list looks a lot more sane too (see attachment).

So it _was_ a regression caused by pat itself after all, and not the 
result of incorrect memory handling in the framebuffer code.
Could you take over the bug report #10843 in bugzilla (it is currently 
assigned to the framebuffer people) and ensure it gets closed once the 
patch gets accepted in Linus' tree?

I'm glad you were able to get this sorted out.

Feel free to add my:
Tested-by: Frans Pop <elendil@planet.nl>

Thanks,
FJP


[-- Attachment #2: pat_memtype_list --]
[-- Type: text/plain, Size: 1227 bytes --]

PAT memtype list:
uncached-minus @ 0x7f6e2000-0x7f6e3000
uncached-minus @ 0x7f6e4000-0x7f6e5000
uncached-minus @ 0x7f6f6000-0x7f6f7000
uncached-minus @ 0x7f6f6000-0x7f6f7000
uncached-minus @ 0x7f6f6000-0x7f6f7000
uncached-minus @ 0x7f6f6000-0x7f6f7000
uncached-minus @ 0x7f6f7000-0x7f6fc000
uncached-minus @ 0x7f6fc000-0x7f6fd000
uncached-minus @ 0x7f6fc000-0x7f6fd000
uncached-minus @ 0x7f6fc000-0x7f6fd000
uncached-minus @ 0x7f6fd000-0x7f6fe000
uncached-minus @ 0x7f6fd000-0x7f6fe000
uncached-minus @ 0x7f6fd000-0x7f6fe000
uncached-minus @ 0x7f6fd000-0x7f6fe000
uncached-minus @ 0x7f6fd000-0x7f6fe000
uncached-minus @ 0x80000000-0x90000000
uncached-minus @ 0x80000000-0x80020000
uncached-minus @ 0x80000000-0x80300000
uncached-minus @ 0x90100000-0x90120000
uncached-minus @ 0x90200000-0x90280000
uncached-minus @ 0x90200000-0x90280000
uncached-minus @ 0x90200000-0x90280000
uncached-minus @ 0x90280000-0x902c0000
uncached-minus @ 0x90280000-0x902c0000
uncached-minus @ 0x902c0000-0x902c4000
uncached-minus @ 0x902c4000-0x902c5000
uncached-minus @ 0x902c4000-0x902c5000
uncached-minus @ 0xfed00000-0xfed01000
uncached-minus @ 0xfed13000-0xfed14000
uncached-minus @ 0xfed1f000-0xfed20000
uncached-minus @ 0xfed40000-0xfed41000

Re: [Bug 10843] Display artifacts on XOrg logout with PAT kernel and VESA framebuffer

[Ingo Molnar]

* Frans Pop <elendil@planet.nl> wrote:

> On Saturday 13 September 2008, Pallipadi, Venkatesh wrote:
> > >We have too many entires in PAT list due to RAM pages being marked
> > >UC by drivers. Unfortunately, there are no quick fixes that can fix
> > >this for 2.6.27. However, we are aware of the problem here and
> > >working on a more complete fix for this. We should have the patch
> > >for it soon.
> >
> > Can you try the patch here
> > http://www.ussg.iu.edu/hypermail/linux/kernel/0809.1/2074.html
> > And report back whether that resolves the issue.
> 
> Yes, that solves the issue. The display is now free of artifacts 
> again, both on logout and when I switch users in X. The 
> pat_memtype_list looks a lot more sane too (see attachment).
> 
> So it _was_ a regression caused by pat itself after all, and not the 
> result of incorrect memory handling in the framebuffer code. Could you 
> take over the bug report #10843 in bugzilla (it is currently assigned 
> to the framebuffer people) and ensure it gets closed once the patch 
> gets accepted in Linus' tree?

ok, since those patches are only supposed to improve performance, it 
would be nice to know why this fixes the display artifacts. They were a 
rather long-living bug and we'd like to avoid such bug patterns in the 
future.

or is it the timing effect? Too slow programming of the GX chip causes 
artifacts? (but i think this is not very likely)

	Ingo