Bus Errors on multiple programs, python? udev?

jstead1

I am getting bus errors on multiple programs, unfortunately including portage.
# emerge (followed by anything)
results in the following

NeddySeagoon · Posted: Wed Oct 17, 2007 7:07 pm Post subject:

jstead1,

Bus errors indicate an attempt to access memory (or a memory mapped device) you don't have.
They often indicate a hardware issue but not always memory or memory controller.
It may be somethng as simple as a clogged heatsink and fan on the CPU.

Its worth running memtest86, which is a boot option from the liveCD.
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jstead1 · Posted: Thu Oct 18, 2007 4:47 pm Post subject:

Finished running memtest86.
No errors.

I didn't really expect any, since every kde app seems to work fine. X works fine.

I know most all python scripts fail or at least indicate bus errors(emerge, dipatch-conf, revdep-rebuild).
GTK apps seem to fail (firefox, gnucash)

The odd one is wget I don't think that has all that many dependencies (can't run any portage tools, except etc-update, so I can't say for sure).
I think wget needs some sort of ssl libraries, and that may be related, but I can't rebuild openssl without portage, and I can't get portage to work.
Even using the ebuild command on packages that are already fetched fails with a bus error.
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jim

NeddySeagoon · Posted: Thu Oct 18, 2007 6:13 pm Post subject:

jstead1,

Try running python-updater which you should already have.

I'm not yet convinced its not a thermal issue. Running programs and memtest is not as thermally stressful to the CPU as compiling.
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Computer users fall into two groups:-
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those that have never had a hard drive fail.

gerard27 · Posted: Thu Oct 18, 2007 7:30 pm Post subject:

Well,he gets the error before anything is being compiled.
Gerard.
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jstead1 · Posted: Thu Oct 18, 2007 9:03 pm Post subject:

NeddySeagoon:
python-updater is broken (it is looking for information from portageq, which doesn't work because it generates a bus error).

As stated by Gerard van Vuuren, I don't get to the point of compiling anything, emerge immediately bombs out with a bus error.

I really don't think it is a thermal issue. The response is the same if the computer is off overnight, or running continuously. The errors are only in certain programs, never in others and are 100% repeatable, and never vary, regardless of thermal conditions.

The error never occurs in kde programs, even with several browser (konqueror) windows, amarok playing music, system information graphs running, un-tarring a big archive, and doing this continuously for hours. The computer is completely stable. Even when I get the bus error on certain programs, it doesn't affect any other program.

But if I boot up the cold computer, into a command prompt, and run wget, I get a bus error.

In addition, knoppix works fine on the computer.

I have untarred python from a repository, untarred portage from a repository, and no change (this is the basic solution to when you have screwed up your portage or python and need to get it back, basic gentoo survival skills). I don't know if there is some part of the ebuilds for either of these that would make changes that would't be performed from the untarring process.
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jim

Genone · Posted: Thu Oct 18, 2007 10:15 pm Post subject:

My first try would be a new (or old) kernel.

jstead1 · Posted: Fri Oct 19, 2007 12:17 am Post subject:

Tried older kernel 2.6.22-gentoo-r2, current kernel rebuilt 2.6.22-gentoo-r5, and newer kernel 2.6.22-gentoo-r8.
The only difference is X wouldn't work with the nvidia driver because I couldn't build it against the new kernel.

All the other errors remain the same.

Edit for more info: I did not experience the error previously with the r2 or r5 kernel, I used them for a while and the error started well after starting the use of the r5 kernel. So in short, the error didn't appear co-incident with a kernel upgrade.

It did appear shortly after an emerge was completed, and shortly after a possible power interruption. I know boot was not mounted even if the computer did suffer a power interruption.
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jim

jstead1 · Posted: Mon Oct 22, 2007 12:58 pm Post subject:

I couldn't figure this one out.
Eventually, I re-installed.
(I don't back-up my whole system, just my data and certain configuration files.)

That fixed the problem, at least for now.
If it was hardware related, I guess it will come back (although the computer survived about 36 hours of continuous compiling) :-)

If not, I guess I'll never know exactly what happened.
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jim

migmedia · Posted: Tue Oct 23, 2007 11:15 am Post subject: Bus Error - me too

jstead1 · Posted: Tue Oct 23, 2007 2:23 pm Post subject: Re: Bus Error - me too

migmedia · Posted: Tue Oct 23, 2007 3:05 pm Post subject: Re: Bus Error - me too

It's like in your posts above.

in addition:
qbankmanager is affected
sshd is affected

migmedia · Posted: Fri Oct 26, 2007 11:04 am Post subject: Re: Bus Error - solved for me

nephron · n00b Joined: 18 Oct 2007 Posts: 66

hey guys!

i have a new quitly nice gentoo install crypted on the way like this tutorial discribes:

SECURITY System Encryption DM-Crypt with LUKS

well now, for 3 days i had a very strange problem with Bus errors like you and i can't figure out, why the problem occured...
i disided to check your idea, but i must tell you that this not solved the problem. I can't find any precompiled packages so i downloaded the sourcecodes and compiled it by myself. After the install-procedure the problem is still killing all emerges and other programs with Bus errors.

Also very strange: i tried to boot up my system by hand to copy the files from the livecd. At env-update also the same error occured.

Has anyone some ideas to this UNSOLVED Bus Error problem?

thx a lot

nephron

nephron · n00b Joined: 18 Oct 2007 Posts: 66

anyone an idea?

Insanity5902 · Posted: Mon Nov 26, 2007 4:59 am Post subject:

might of found the problem, ran into the same problems today, tried replacing libssl and libcrypto, but no luck. thought it might be a libexpat thing, but still no.

Ended up putting trace statements into a portage bin that was producing the error (just a lot shorter than the emerge script

). Anyways, after tracing the error through all the portage includes, it took me back to the core portage 2.4 files, not sure why. The files would import find winside a shell. I am not sure why, python 2.5 isn't stable on yet.

Anyways, I package up python from a similar system (Intel 64 instead of amd 64) and reset the python symlink to python2.5 and that work. I had to mainly package up the python2.5, might of been able to use quickpkg, but i didn't think of it until afterwards.

For reference i grabbed
/usr/bin/python2.5
/usr/include/pythyon2.5/*
/usr/lib64/python2.5/*
/usrlib64/libpython2.5*

tar up those for commands, and copy over to the other box, if you don't have access to antoher box, you might be able to download them from a binhost and extarct them that way. Then symlink python to python2.5

afterthough -- i recompiled python-2.4 relinked the symlink and now everything works ...
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sentenza · n00b Joined: 05 Dec 2002 Posts: 30

Hi,

Ran also into this problem today, and finally discovered that my 32bits version of libgtk was corrupted on disk.
As I'm using XFS and got a powerloss last night, this is not surprising.

If you also experience that problem, try to use strace to identify what goes wrong before crash. This may help you to identify the library that cause these bus error. This may be harder to fix when portage is broken, otherwise try to: