LDT allocated for cloned task!

LDT allocated for cloned task!

[Pau]

I've been running 2.4.3-pre4 for a few days now and today I've got this
message in the logs a couple of times. Is it harmless?

Pau

Re: LDT allocated for cloned task!

[Linus Torvalds]

In article <Pine.LNX.4.33.0103201745080.1701-100000@pau.intranet.ct>,
Pau  <linuxnow@terra.es> wrote:
>
>I've been running 2.4.3-pre4 for a few days now and today I've got this
>message in the logs a couple of times. Is it harmless?

It's harmless.

It's really a warning that says: the mm that you allocated a new LDT for
may have multiple users, and while the LDT is added to all of them, we
don't guarantee _when_ the other users will actually see the LDT.

It so happens that the other users are probably just something like
"top" or similar, that increment the MM count to make sure that the MM
doesn't go away while they get information about the process. And those
users don't care about the LDT in the least.

		Linus

Re: LDT allocated for cloned task!

[Simon Kirby]

On Tue, Mar 20, 2001 at 09:23:14AM -0800, Linus Torvalds wrote:

> It's harmless.
> 
> It's really a warning that says: the mm that you allocated a new LDT for
> may have multiple users, and while the LDT is added to all of them, we
> don't guarantee _when_ the other users will actually see the LDT.
> 
> It so happens that the other users are probably just something like
> "top" or similar, that increment the MM count to make sure that the MM
> doesn't go away while they get information about the process. And those
> users don't care about the LDT in the least.

xmms with the xmms-avi (or avi-xmms?) plugin reproduces the message each
and every time xmms starts up.

Simon-

[  Stormix Technologies Inc.  ][  NetNation Communications Inc. ]
[       sim@stormix.com       ][       sim@netnation.com        ]
[ Opinions expressed are not necessarily those of my employers. ]

LDT allocated for cloned task!

[Pozsar Balazs]

hi all,

When I was starting X, I got this in the syslog:

Mar 17 10:19:20 brefatox kernel: LDT allocated for cloned task!

_What is this?_. A grep on /var/log/messages shows that I had this several
times. I'm using ext2fs on an IDE drive.

Tell me what more info I can provide.

Balazs Pozsar.

LDT allocated for cloned task!

[Simon Kirby]

LDT allocated for cloned task!

I'm seeing this message come up fairly often while running vanilla
2.4.2-pre3 on my dual Celeron system.  I don't think I saw it before
while running 2.4.1, but I may have just missed it.

My system has been up around two days and has 11 of these messages in the
ring buffer.

Actually, I just remembered that I'm using the mga DRI driver module
from the DRI CVS tree rather than the built-in module, so that's not part
of the official kernel...maybe that is causing the messages.

Simon-

[  Stormix Technologies Inc.  ][  NetNation Communications Inc. ]
[       sim@stormix.com       ][       sim@netnation.com        ]
[ Opinions expressed are not necessarily those of my employers. ]

Re: LDT allocated for cloned task!

[Alan Cox]

> LDT allocated for cloned task!
> 
> I'm seeing this message come up fairly often while running vanilla
> 2.4.2-pre3 on my dual Celeron system.  I don't think I saw it before
> while running 2.4.1, but I may have just missed it.

Are you running wine or dosemu ?

Re: LDT allocated for cloned task!

[Simon Kirby]

On Tue, Feb 13, 2001 at 06:22:26PM +0000, Alan Cox wrote:

> > LDT allocated for cloned task!
> > 
> > I'm seeing this message come up fairly often while running vanilla
> > 2.4.2-pre3 on my dual Celeron system.  I don't think I saw it before
> > while running 2.4.1, but I may have just missed it.
> 
> Are you running wine or dosemu ?

Actually, I've ran both of them at least a few times this boot.

I think I've found what's doing it...xmms with the avi-xmms plugin will
cause the message to appear at startup even without playing anything. 
Moving the libraries out of the /usr/lib/xmms/Input directory and
starting xmms again will not produce any message.  I only just recently
downloaded this plugin which is probably why I didn't see it before.

It's also happening on my second (non-DRI) head, so it's probably not
related to that (I'll reboot and try again without any DRI modules loaded
and see).

Simon-

[  Stormix Technologies Inc.  ][  NetNation Communications Inc. ]
[       sim@stormix.com       ][       sim@netnation.com        ]
[ Opinions expressed are not necessarily those of my employers. ]

Re: LDT allocated for cloned task!

[Ville Herva]

On Tue, Feb 13, 2001 at 10:48:23AM -0800, you [Simon Kirby] claimed:
> On Tue, Feb 13, 2001 at 06:22:26PM +0000, Alan Cox wrote:
> 
> > > LDT allocated for cloned task!
> > > 
> > > I'm seeing this message come up fairly often while running vanilla
> > > 2.4.2-pre3 on my dual Celeron system.  I don't think I saw it before
> > > while running 2.4.1, but I may have just missed it.
> > 
> > Are you running wine or dosemu ?
> 
> Actually, I've ran both of them at least a few times this boot.
> 
> I think I've found what's doing it...xmms with the avi-xmms plugin will
> cause the message to appear at startup even without playing anything. 
> Moving the libraries out of the /usr/lib/xmms/Input directory and
> starting xmms again will not produce any message.  I only just recently
> downloaded this plugin which is probably why I didn't see it before.
> 
> It's also happening on my second (non-DRI) head, so it's probably not
> related to that (I'll reboot and try again without any DRI modules loaded
> and see).

I saw/see a lot of those messages on 2.2.18pre19 as well. I hacked the
kernel to show the process in question, and it's always xmms:

LDT allocated for cloned task (pid=20272; count=3)!

20272 pts/10   RN   186:01 xmms

And I do have the xmms-avi plugin in the plugin directory. So if you find a
bug/fix to 2.4, could you please check 2.2 as well? (I'm afraid I'm not
nearly clueful enough.) 

Are these messages serious anyway?


-- v --

v@iki.fi

Re: LDT allocated for cloned task!

[Gábor Lénárt]

On Wed, Feb 14, 2001 at 04:06:49PM +0200, Ville Herva wrote:
> > I think I've found what's doing it...xmms with the avi-xmms plugin will
> > cause the message to appear at startup even without playing anything. 
> > Moving the libraries out of the /usr/lib/xmms/Input directory and
> > starting xmms again will not produce any message.  I only just recently
> > downloaded this plugin which is probably why I didn't see it before.
> > 
> > It's also happening on my second (non-DRI) head, so it's probably not
> > related to that (I'll reboot and try again without any DRI modules loaded
> > and see).
> 
> I saw/see a lot of those messages on 2.2.18pre19 as well. I hacked the
> kernel to show the process in question, and it's always xmms:
> 
> LDT allocated for cloned task (pid=20272; count=3)!
> 
> 20272 pts/10   RN   186:01 xmms
> 
> And I do have the xmms-avi plugin in the plugin directory. So if you find a
> bug/fix to 2.4, could you please check 2.2 as well? (I'm afraid I'm not
> nearly clueful enough.) 

xmms-avi uses DLL loader from wine too? I mean does it use windows codecs
to play AVIs? In this case, the dll loader set up some LDT settings and
this casue that message. However with our player - mplayer - it does not
detected my myself (it can use DLLs to play DivX movies, as well).

-- 
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Re: LDT allocated for cloned task!

[Ville Herva]

On Wed, Feb 14, 2001 at 03:12:29PM +0100, you [Gábor Lénárt] claimed:
> 
> xmms-avi uses DLL loader from wine too? 

AFAIK: yes.

> I mean does it use windows codecs
> to play AVIs? In this case, the dll loader set up some LDT settings and
> this casue that message. 

So this is a harmless message?

> However with our player - mplayer - it does not
> detected my myself (it can use DLLs to play DivX movies, as well).

Cool. 


-- v --

v@iki.fi