[gentoo-amd64] ldconfig breaks my system

[gentoo-amd64] ldconfig breaks my system

[Alex Bennee]

Hi,

Applogies for the cross-post. I'm unsure if this is and amd64 specific
problem or a more general b0rkage.

I've posted about my failing glibc emerges before:

http://thread.gmane.org/gmane.linux.gentoo.user/114627

I think I've narrowed it down to ldconfig running during the emerge. In
fact at the moment any time I run ldconfig it breaks the system so that
I cannot spawn any new shells (they segfault straight away). I can
restore my system by untaring a rescue glibc binary.

Can anyone give me any hints on how to diagnose the problem with
ldconfig and why things stop working when its done?

I'm currently building a parallel world on a second partition (in a
chrooted environment) to see if there are any differences between the
two setups (i.e a subtle breakage occured and was never picked up).

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It destroys one's nerves to be amiable every day to the same human
being. -- Benjamin Disraeli

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Re: [gentoo-amd64] ldconfig breaks my system

[Zac Medico]

Alex Bennee wrote:
> Hi,
> 
> Applogies for the cross-post. I'm unsure if this is and amd64 specific
> problem or a more general b0rkage.
> 
> I've posted about my failing glibc emerges before:
> 
> http://thread.gmane.org/gmane.linux.gentoo.user/114627
> 
> I think I've narrowed it down to ldconfig running during the emerge. In
> fact at the moment any time I run ldconfig it breaks the system so that
> I cannot spawn any new shells (they segfault straight away). I can
> restore my system by untaring a rescue glibc binary.
> 
> Can anyone give me any hints on how to diagnose the problem with
> ldconfig and why things stop working when its done?
> 
> I'm currently building a parallel world on a second partition (in a
> chrooted environment) to see if there are any differences between the
> two setups (i.e a subtle breakage occured and was never picked up).
> 
> --
> Alex, homepage: http://www.bennee.com/~alex/
> It destroys one's nerves to be amiable every day to the same human
> being. -- Benjamin Disraeli
> 

I had a similar problem (actually with plain x86) a couple months ago.  That was with glibc-2.3.4.20040808-r1.  Lately I've been using glibc-2.3.5 with no problems.  What version do you have?

Zac
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Re: [gentoo-amd64] ldconfig breaks my system

[Alex Bennee]

On Fri, 2005-07-15 at 09:13 -0700, Zac Medico wrote:

> I had a similar problem (actually with plain x86) a couple months ago.  
> That was with glibc-2.3.4.20040808-r1.

Yes that one. I've been unable to succesfully upgrade to 2.3.5 without
hitting the failure. However I left my system building a fresh partition
from scratch over the weekend - it managed to upgrade to 2.3.5 without a
problem. 

Something has obviously broken on my main partition that is preventing
the update. Perhaps the difference in ld.so.conf explain things?

malory linux-2.6.12.2 # diff
-ub /etc/ld.so.conf /mnt/sda1/etc/ld.so.conf
--- /etc/ld.so.conf     2005-07-17 13:48:21.000000000 +0000
+++ /mnt/sda1/etc/ld.so.conf    2005-07-14 22:10:29.000000000 +0000
@@ -10,12 +10,14 @@
 /usr/lib32
 /usr/local/lib32
 /usr/x86_64-pc-linux-gnu/lib
-/usr/lib/gcc/x86_64-pc-linux-gnu/3.4.3
-/usr/lib/gcc-lib/x86_64-pc-linux-gnu/3.4.2
-/usr/lib/gcc-lib/x86_64-pc-linux-gnu/3.4.2/32
-/usr//lib/MozillaFirefox
+/usr/lib/gcc/x86_64-pc-linux-gnu/3.4.3/.
+/usr/lib/MozillaFirefox
 /usr/lib/mozilla
 /usr/lib
+/opt/blackdown-jdk-1.4.2.02/jre/lib/amd64/
+/opt/blackdown-jdk-1.4.2.02/jre/lib/amd64/native_threads/
+/opt/blackdown-jdk-1.4.2.02/jre/lib/amd64/classic/
+/opt/blackdown-jdk-1.4.2.02/jre/lib/amd64/server/
 /emul/linux/x86/lib
 /emul/linux/x86/usr/lib
 /usr/qt/3/lib


>   Lately I've been using glibc-2.3.5 with no problems.  What version do you have?
> 
> Zac
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[gentoo-amd64] Re: ldconfig breaks my system

[Duncan]

Alex Bennee posted <1121624098.9429.5.camel@malory>, excerpted below,  on
Sun, 17 Jul 2005 18:14:57 +0000:

> On Fri, 2005-07-15 at 09:13 -0700, Zac Medico wrote:
> 
>> I had a similar problem (actually with plain x86) a couple months ago.
>> That was with glibc-2.3.4.20040808-r1.
> 
> Yes that one. I've been unable to succesfully upgrade to 2.3.5 without
> hitting the failure. However I left my system building a fresh partition
> from scratch over the weekend - it managed to upgrade to 2.3.5 without a
> problem.
> 
> Something has obviously broken on my main partition that is preventing the
> update. Perhaps the difference in ld.so.conf explain things?

I've been running glibc-2.3.5 fine since April, save for the time I was
running 2.3.5-20050421, the snapshot with gcc-4.x fixes.  (The snapshot
worked in amd64 mode, compiled with gcc4 of course, but the x86 ABI
version failed, causing further gcc/glibc/sandbox emerge failures because
they have multilib elements and failed during the 32-bit configure step
due to being unable to load a library, presumably glibc, when testing for
a working (32-bit) gcc-compiler.  After I figured out that was the
problem, I simply returned to the normal 2.3.5 version, compiled with
gcc-3.4.x since it didn't have the gcc4 patches applied.)

-- 
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"Every nonfree program has a lord, a master --
and if you use the program, he is your master."  Richard Stallman in
http://www.linuxdevcenter.com/pub/a/linux/2004/12/22/rms_interview.html


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Re: [gentoo-amd64] ldconfig breaks my system

[Zac Medico]

Alex Bennee wrote:
> 
> Yes that one. I've been unable to succesfully upgrade to 2.3.5 without
> hitting the failure. However I left my system building a fresh partition
> from scratch over the weekend - it managed to upgrade to 2.3.5 without a
> problem. 
> 
> Something has obviously broken on my main partition that is preventing
> the update. Perhaps the difference in ld.so.conf explain things?
> 

So, your system is still broken?  You can use quickpkg to make a binary package from the glibc that you built on the fresh partition.  Try to install that binary package.  If that doesn't work then you can do it by brute force: untar the binary package directly onto your broken system and run ldconfig.

Zac
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Re: [gentoo-amd64] ldconfig breaks my system

[Alex Bennee]

On Sun, 2005-07-17 at 18:59 -0700, Zac Medico wrote:
> Alex Bennee wrote:
> > 
> > Yes that one. I've been unable to succesfully upgrade to 2.3.5 without
> > hitting the failure. However I left my system building a fresh partition
> > from scratch over the weekend - it managed to upgrade to 2.3.5 without a
> > problem. 
> > 
> > Something has obviously broken on my main partition that is preventing
> > the update. Perhaps the difference in ld.so.conf explain things?
> > 
> 
> So, your system is still broken?  You can use quickpkg to make a binary package
> from the glibc that you built on the fresh partition.  Try to install that binary package.
> If that doesn't work then you can do it by brute force: untar the binary package directly
>  onto your broken system and run ldconfig.

I wasn't able to install the binary package properly (as ldconfig is
called during the emerge process). However as I was stracing the
ldconfig output to compare with the working setup I realised I wasn't
logging stderr so hit Ctrl-C and restarted ldconfig.

This seems to of "unstuck" the ldconfig failure and I have been able to
run ldconfig without breaking things since. I've done a proper src
emerge of glibc on a chrooted in my original partiton and everything
seems to be working ok now.

The config has been updated during the env-update so I wonder if it was
a subtle breakage in the config that was causing the failure?

malory etc # diff -ub ld.so.conf ldconfig.backup/ld.so.conf
--- ld.so.conf  2005-07-17 22:41:47.000000000 +0100
+++ ldconfig.backup/ld.so.conf  2005-06-19 23:31:13.000000000 +0100
@@ -10,9 +10,7 @@
 /usr/lib32
 /usr/local/lib32
 /usr/x86_64-pc-linux-gnu/lib
-/usr/lib/gcc/x86_64-pc-linux-gnu/3.4.3
-/usr/lib/gcc-lib/x86_64-pc-linux-gnu/3.4.2
-/usr/lib/gcc-lib/x86_64-pc-linux-gnu/3.4.2/32
+/usr/lib/gcc/x86_64-pc-linux-gnu/3.4.3/.
 /usr/lib/MozillaFirefox
 /usr/lib/mozilla
 /usr/lib


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If you had better tools, you could more effectively demonstrate your
total incompetence.

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Re: [gentoo-amd64] ldconfig breaks my system

[Zac Medico]

Alex Bennee wrote:
> On Sun, 2005-07-17 at 18:59 -0700, Zac Medico wrote:
> 
>>Alex Bennee wrote:
>>
>>>Yes that one. I've been unable to succesfully upgrade to 2.3.5 without
>>>hitting the failure. However I left my system building a fresh partition
>>>from scratch over the weekend - it managed to upgrade to 2.3.5 without a
>>>problem. 
>>>
>>>Something has obviously broken on my main partition that is preventing
>>>the update. Perhaps the difference in ld.so.conf explain things?
>>>
>>
>>So, your system is still broken?  You can use quickpkg to make a binary package
>>from the glibc that you built on the fresh partition.  Try to install that binary package.
>>If that doesn't work then you can do it by brute force: untar the binary package directly
>> onto your broken system and run ldconfig.
> 
> 
> I wasn't able to install the binary package properly (as ldconfig is
> called during the emerge process). However as I was stracing the
> ldconfig output to compare with the working setup I realised I wasn't
> logging stderr so hit Ctrl-C and restarted ldconfig.
> 
> This seems to of "unstuck" the ldconfig failure and I have been able to
> run ldconfig without breaking things since. I've done a proper src
> emerge of glibc on a chrooted in my original partiton and everything
> seems to be working ok now.
> 
> The config has been updated during the env-update so I wonder if it was
> a subtle breakage in the config that was causing the failure?
> 
> malory etc # diff -ub ld.so.conf ldconfig.backup/ld.so.conf
> --- ld.so.conf  2005-07-17 22:41:47.000000000 +0100
> +++ ldconfig.backup/ld.so.conf  2005-06-19 23:31:13.000000000 +0100
> @@ -10,9 +10,7 @@
>  /usr/lib32
>  /usr/local/lib32
>  /usr/x86_64-pc-linux-gnu/lib
> -/usr/lib/gcc/x86_64-pc-linux-gnu/3.4.3
> -/usr/lib/gcc-lib/x86_64-pc-linux-gnu/3.4.2
> -/usr/lib/gcc-lib/x86_64-pc-linux-gnu/3.4.2/32
> +/usr/lib/gcc/x86_64-pc-linux-gnu/3.4.3/.
>  /usr/lib/MozillaFirefox
>  /usr/lib/mozilla
>  /usr/lib
> 
> 

I don't know.  See if you can break it again, then we'll know for sure 8-).

Zac 
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