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* New staging error
@ 2010-11-09 12:58 Gary Thomas
  2010-11-09 15:28 ` Mark Hatle
  0 siblings, 1 reply; 6+ messages in thread
From: Gary Thomas @ 2010-11-09 12:58 UTC (permalink / raw)
  To: Poky

With the new staging (master of 2010-11-08), I'm seeing lots of these messages
when I build from scratch:

NOTE: Running setscene task 81 of 364 (/local/poky-amltd/meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb:do_populate_sysroot_setscene)
NOTE: package netbase-4.41-r1: task do_populate_sysroot_setscene: Started
NOTE: Staging package /home/local/poky-new2/sstate-cache/sstate-netbase-ppc603e-poky-linux-4.41-r1-ppc603e-1-83766f23e3f9013cb26b768478638f1d_populate-sysroot.tgz does not exist
ERROR: ld.so: object 'libpseudo.so' from LD_PRELOAD cannot be preloaded: ignored.
ERROR: ld.so: object 'libpseudo.so' from LD_PRELOAD cannot be preloaded: ignored.

Questions:
   * What does this mean?  Can I fix it somehow?
   * If it's ignored, it should be a WARNING, not an ERROR

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------


^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: New staging error
  2010-11-09 12:58 New staging error Gary Thomas
@ 2010-11-09 15:28 ` Mark Hatle
  2010-11-09 16:12   ` Gary Thomas
  0 siblings, 1 reply; 6+ messages in thread
From: Mark Hatle @ 2010-11-09 15:28 UTC (permalink / raw)
  To: poky

On 11/9/10 6:58 AM, Gary Thomas wrote:
> With the new staging (master of 2010-11-08), I'm seeing lots of these messages
> when I build from scratch:
>
> NOTE: Running setscene task 81 of 364 (/local/poky-amltd/meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb:do_populate_sysroot_setscene)
> NOTE: package netbase-4.41-r1: task do_populate_sysroot_setscene: Started
> NOTE: Staging package /home/local/poky-new2/sstate-cache/sstate-netbase-ppc603e-poky-linux-4.41-r1-ppc603e-1-83766f23e3f9013cb26b768478638f1d_populate-sysroot.tgz does not exist
> ERROR: ld.so: object 'libpseudo.so' from LD_PRELOAD cannot be preloaded: ignored.
> ERROR: ld.so: object 'libpseudo.so' from LD_PRELOAD cannot be preloaded: ignored.
>
> Questions:
>     * What does this mean?  Can I fix it somehow?
>     * If it's ignored, it should be a WARNING, not an ERROR
>

It is an error, but unfortunately not one that can caught.  (The error comes 
from ld.so, which will happily ignore a failed preload.  If someone knows how to 
make it fatal, we should do so!)

I've normally seen the libpseudo.so failed to preload when either you are 
running as root (as a safety precaution against tampering), you've upgraded your 
host's libc since pseudo was built, or suddenly you are running 64-bit (or 
32-bit) binaries when pseudo is built for the other architecture type.

I'd suggest checking to see if you can figure out what caused the message so we 
can get it fixed.  But if you are unable to figure it out, you'll need to clean 
and rebuild pseudo-native.  (I don't remember the clean target to ignore the 
sstate cache... or maybe we're planning on adding one and haven't yet.)  You may 
need to 'rm' pseudo from the sstate cache.  To force it to build fresh.

--Mark


^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: New staging error
  2010-11-09 15:28 ` Mark Hatle
@ 2010-11-09 16:12   ` Gary Thomas
  2010-11-09 16:14     ` Mark Hatle
  0 siblings, 1 reply; 6+ messages in thread
From: Gary Thomas @ 2010-11-09 16:12 UTC (permalink / raw)
  To: Mark Hatle; +Cc: poky

On 11/09/2010 08:28 AM, Mark Hatle wrote:
> On 11/9/10 6:58 AM, Gary Thomas wrote:
>> With the new staging (master of 2010-11-08), I'm seeing lots of these
>> messages
>> when I build from scratch:
>>
>> NOTE: Running setscene task 81 of 364
>> (/local/poky-amltd/meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb:do_populate_sysroot_setscene)
>>
>> NOTE: package netbase-4.41-r1: task do_populate_sysroot_setscene: Started
>> NOTE: Staging package
>> /home/local/poky-new2/sstate-cache/sstate-netbase-ppc603e-poky-linux-4.41-r1-ppc603e-1-83766f23e3f9013cb26b768478638f1d_populate-sysroot.tgz
>> does not exist
>> ERROR: ld.so: object 'libpseudo.so' from LD_PRELOAD cannot be
>> preloaded: ignored.
>> ERROR: ld.so: object 'libpseudo.so' from LD_PRELOAD cannot be
>> preloaded: ignored.
>>
>> Questions:
>> * What does this mean? Can I fix it somehow?
>> * If it's ignored, it should be a WARNING, not an ERROR
>>
>
> It is an error, but unfortunately not one that can caught. (The error
> comes from ld.so, which will happily ignore a failed preload. If someone
> knows how to make it fatal, we should do so!)
>
> I've normally seen the libpseudo.so failed to preload when either you
> are running as root (as a safety precaution against tampering), you've
> upgraded your host's libc since pseudo was built, or suddenly you are
> running 64-bit (or 32-bit) binaries when pseudo is built for the other
> architecture type.

None of these are the case.  I was simply trying to test/verify the staging
mechanism.  I think the error happens because LD_PRELOAD=libpseudo.so seems
to be set, even before the sysroots tree where it lives has been populated.

> I'd suggest checking to see if you can figure out what caused the
> message so we can get it fixed. But if you are unable to figure it out,
> you'll need to clean and rebuild pseudo-native. (I don't remember the
> clean target to ignore the sstate cache... or maybe we're planning on
> adding one and haven't yet.) You may need to 'rm' pseudo from the sstate
> cache. To force it to build fresh.


-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------


^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: New staging error
  2010-11-09 16:12   ` Gary Thomas
@ 2010-11-09 16:14     ` Mark Hatle
  2010-11-09 19:08       ` Gary Thomas
  0 siblings, 1 reply; 6+ messages in thread
From: Mark Hatle @ 2010-11-09 16:14 UTC (permalink / raw)
  To: Gary Thomas; +Cc: poky

On 11/9/10 10:12 AM, Gary Thomas wrote:
> On 11/09/2010 08:28 AM, Mark Hatle wrote:
>> On 11/9/10 6:58 AM, Gary Thomas wrote:
>>> With the new staging (master of 2010-11-08), I'm seeing lots of these
>>> messages
>>> when I build from scratch:
>>>
>>> NOTE: Running setscene task 81 of 364
>>> (/local/poky-amltd/meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb:do_populate_sysroot_setscene)
>>>
>>> NOTE: package netbase-4.41-r1: task do_populate_sysroot_setscene: Started
>>> NOTE: Staging package
>>> /home/local/poky-new2/sstate-cache/sstate-netbase-ppc603e-poky-linux-4.41-r1-ppc603e-1-83766f23e3f9013cb26b768478638f1d_populate-sysroot.tgz
>>> does not exist
>>> ERROR: ld.so: object 'libpseudo.so' from LD_PRELOAD cannot be
>>> preloaded: ignored.
>>> ERROR: ld.so: object 'libpseudo.so' from LD_PRELOAD cannot be
>>> preloaded: ignored.
>>>
>>> Questions:
>>> * What does this mean? Can I fix it somehow?
>>> * If it's ignored, it should be a WARNING, not an ERROR
>>>
>>
>> It is an error, but unfortunately not one that can caught. (The error
>> comes from ld.so, which will happily ignore a failed preload. If someone
>> knows how to make it fatal, we should do so!)
>>
>> I've normally seen the libpseudo.so failed to preload when either you
>> are running as root (as a safety precaution against tampering), you've
>> upgraded your host's libc since pseudo was built, or suddenly you are
>> running 64-bit (or 32-bit) binaries when pseudo is built for the other
>> architecture type.
>
> None of these are the case.  I was simply trying to test/verify the staging
> mechanism.  I think the error happens because LD_PRELOAD=libpseudo.so seems
> to be set, even before the sysroots tree where it lives has been populated.

Odd -- we definitely want to fix this.  Sounds like a bug in the staging code.. 
(Note, we're working on changing some of the way pseudo loads into memory as 
well as operates through the run sequence -- so it might have the side effect of 
fixing this issue....  but it's worth filing this as a bug, and if you have a 
way to reproduce it file that as well.)

--Mark

>> I'd suggest checking to see if you can figure out what caused the
>> message so we can get it fixed. But if you are unable to figure it out,
>> you'll need to clean and rebuild pseudo-native. (I don't remember the
>> clean target to ignore the sstate cache... or maybe we're planning on
>> adding one and haven't yet.) You may need to 'rm' pseudo from the sstate
>> cache. To force it to build fresh.
>
>



^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: New staging error
  2010-11-09 16:14     ` Mark Hatle
@ 2010-11-09 19:08       ` Gary Thomas
  2010-11-09 23:52         ` Richard Purdie
  0 siblings, 1 reply; 6+ messages in thread
From: Gary Thomas @ 2010-11-09 19:08 UTC (permalink / raw)
  To: Mark Hatle; +Cc: poky

On 11/09/2010 09:14 AM, Mark Hatle wrote:
> On 11/9/10 10:12 AM, Gary Thomas wrote:
>> On 11/09/2010 08:28 AM, Mark Hatle wrote:
>>> On 11/9/10 6:58 AM, Gary Thomas wrote:
>>>> With the new staging (master of 2010-11-08), I'm seeing lots of these
>>>> messages
>>>> when I build from scratch:
>>>>
>>>> NOTE: Running setscene task 81 of 364
>>>> (/local/poky-amltd/meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb:do_populate_sysroot_setscene)
>>>>
>>>>
>>>> NOTE: package netbase-4.41-r1: task do_populate_sysroot_setscene:
>>>> Started
>>>> NOTE: Staging package
>>>> /home/local/poky-new2/sstate-cache/sstate-netbase-ppc603e-poky-linux-4.41-r1-ppc603e-1-83766f23e3f9013cb26b768478638f1d_populate-sysroot.tgz
>>>>
>>>> does not exist
>>>> ERROR: ld.so: object 'libpseudo.so' from LD_PRELOAD cannot be
>>>> preloaded: ignored.
>>>> ERROR: ld.so: object 'libpseudo.so' from LD_PRELOAD cannot be
>>>> preloaded: ignored.
>>>>
>>>> Questions:
>>>> * What does this mean? Can I fix it somehow?
>>>> * If it's ignored, it should be a WARNING, not an ERROR
>>>>
>>>
>>> It is an error, but unfortunately not one that can caught. (The error
>>> comes from ld.so, which will happily ignore a failed preload. If someone
>>> knows how to make it fatal, we should do so!)
>>>
>>> I've normally seen the libpseudo.so failed to preload when either you
>>> are running as root (as a safety precaution against tampering), you've
>>> upgraded your host's libc since pseudo was built, or suddenly you are
>>> running 64-bit (or 32-bit) binaries when pseudo is built for the other
>>> architecture type.
>>
>> None of these are the case. I was simply trying to test/verify the
>> staging
>> mechanism. I think the error happens because LD_PRELOAD=libpseudo.so
>> seems
>> to be set, even before the sysroots tree where it lives has been
>> populated.
>
> Odd -- we definitely want to fix this. Sounds like a bug in the staging
> code.. (Note, we're working on changing some of the way pseudo loads
> into memory as well as operates through the run sequence -- so it might
> have the side effect of fixing this issue.... but it's worth filing this
> as a bug, and if you have a way to reproduce it file that as well.)

Verified against the latest master.  Bug #526 filed, including a template
to reproduce the error.

>>> I'd suggest checking to see if you can figure out what caused the
>>> message so we can get it fixed. But if you are unable to figure it out,
>>> you'll need to clean and rebuild pseudo-native. (I don't remember the
>>> clean target to ignore the sstate cache... or maybe we're planning on
>>> adding one and haven't yet.) You may need to 'rm' pseudo from the sstate
>>> cache. To force it to build fresh.
>>
>>

-- 
------------------------------------------------------------
Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
------------------------------------------------------------


^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: New staging error
  2010-11-09 19:08       ` Gary Thomas
@ 2010-11-09 23:52         ` Richard Purdie
  0 siblings, 0 replies; 6+ messages in thread
From: Richard Purdie @ 2010-11-09 23:52 UTC (permalink / raw)
  To: Gary Thomas; +Cc: poky

On Tue, 2010-11-09 at 12:08 -0700, Gary Thomas wrote:
> On 11/09/2010 09:14 AM, Mark Hatle wrote:
> > On 11/9/10 10:12 AM, Gary Thomas wrote:
> >> On 11/09/2010 08:28 AM, Mark Hatle wrote:
> >>> On 11/9/10 6:58 AM, Gary Thomas wrote:
> >>>> With the new staging (master of 2010-11-08), I'm seeing lots of these
> >>>> messages
> >>>> when I build from scratch:
> >>>>
> >>>> NOTE: Running setscene task 81 of 364
> >>>> (/local/poky-amltd/meta/recipes-core/sysvinit/sysvinit_2.88dsf.bb:do_populate_sysroot_setscene)
> >>>>
> >>>>
> >>>> NOTE: package netbase-4.41-r1: task do_populate_sysroot_setscene:
> >>>> Started
> >>>> NOTE: Staging package
> >>>> /home/local/poky-new2/sstate-cache/sstate-netbase-ppc603e-poky-linux-4.41-r1-ppc603e-1-83766f23e3f9013cb26b768478638f1d_populate-sysroot.tgz
> >>>>
> >>>> does not exist
> >>>> ERROR: ld.so: object 'libpseudo.so' from LD_PRELOAD cannot be
> >>>> preloaded: ignored.
> >>>> ERROR: ld.so: object 'libpseudo.so' from LD_PRELOAD cannot be
> >>>> preloaded: ignored.
> >>>>
> >>>> Questions:
> >>>> * What does this mean? Can I fix it somehow?
> >>>> * If it's ignored, it should be a WARNING, not an ERROR
> >>>>
> >>>
> >>> It is an error, but unfortunately not one that can caught. (The error
> >>> comes from ld.so, which will happily ignore a failed preload. If someone
> >>> knows how to make it fatal, we should do so!)
> >>>
> >>> I've normally seen the libpseudo.so failed to preload when either you
> >>> are running as root (as a safety precaution against tampering), you've
> >>> upgraded your host's libc since pseudo was built, or suddenly you are
> >>> running 64-bit (or 32-bit) binaries when pseudo is built for the other
> >>> architecture type.
> >>
> >> None of these are the case. I was simply trying to test/verify the
> >> staging
> >> mechanism. I think the error happens because LD_PRELOAD=libpseudo.so
> >> seems
> >> to be set, even before the sysroots tree where it lives has been
> >> populated.
> >
> > Odd -- we definitely want to fix this. Sounds like a bug in the staging
> > code.. (Note, we're working on changing some of the way pseudo loads
> > into memory as well as operates through the run sequence -- so it might
> > have the side effect of fixing this issue.... but it's worth filing this
> > as a bug, and if you have a way to reproduce it file that as well.)
> 
> Verified against the latest master.  Bug #526 filed, including a template
> to reproduce the error.

I can at least explain the bug. What is happening is that the sysroot
directories are totally empty and you're building them from scratch from
the sstate binaries. Some sstate binaries require pseudo to install as
there is permission information that needs to be tracked. The system
therefore tries to load pseudo but since it isn't in the empty sysroot
directory, you see the error.

To confirm the problem, try first running:

bitbake pseudo-native

then whatever the thing you want is.

I'm guessing you will not see the error if you do this in these two
stages. I agree we need to find a way to fix this, if this is the case
but this should at least give you a workaround.

Cheers,

Richard




^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2010-11-10  0:35 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2010-11-09 12:58 New staging error Gary Thomas
2010-11-09 15:28 ` Mark Hatle
2010-11-09 16:12   ` Gary Thomas
2010-11-09 16:14     ` Mark Hatle
2010-11-09 19:08       ` Gary Thomas
2010-11-09 23:52         ` Richard Purdie

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