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List:       kde-devel
Subject:    Re: KPluginLoader ==> cannot load any more object with static TLS
From:       Thiago Macieira <thiago () kde ! org>
Date:       2012-11-03 22:32:26
Message-ID: 4616076.QEy8eCdMP0 () tjmaciei-mobl2
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On quarta-feira, 31 de outubro de 2012 14.30.08, Sune Vuorela wrote:
> On 2012-10-30, Stephane MANKOWSKI <stephane@mankowski.fr> wrote:
> > On kubuntu 12.04 (with KDE 4.9.1), all plugins were successfully loaded.
> > On kubuntu 12.10 (with KDE 4.9.2), some plugins are not loaded due to a 
> > NULL pointer returned by /*loader.factory()*/
> > I didn't change the code of Skrooge in between.
> >
> > If I print the error message returned by /*loader.errorString()*/, I
> > get 
> > this:
> > /*dlopen: cannot load any more object with static TLS*/
> >
> > I don't understand this error.
> > What does it mean?
> > What should I do to be able to load all plugins like on previous version?
>
> the error is coming from libdl (the thing that is a few layers
> underneath kpluginloader). And it is apparantly because there isn't room
> in the DTV to initalize the static TLS.
> TLS is short for Threaded Local Storage (not related to ssl-TLS)
>
> the code is in
> http://sourceware.org/git/?p=glibc.git;a=blob;f=elf/dl-open.c;hœ39a34a4b0b
> aafd93f37b1364c10724b0fa6d9b;hb=HEAD line 546

That means there are some wrong build options for that plugin.

It means the TLS model used is invalid for loadable plugins. It should be a
dynamic mode.

Check if:
 - there's any -ftls-model= option being passed during the build of that
plugin
 - if the -fPIC option *is* there. If it's not, add it.

--
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
   Software Architect - Intel Open Source Technology Center
      PGP/GPG: 0x6EF45358; fingerprint:
      E067 918B B660 DBD1 105C  966C 33F5 F005 6EF4 5358

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