[lug] Binary compatibility and segfaults

[Hugh Brown]

On Sun, 17 Sep 2006, Daniel Webb wrote:

> I'm running a lot of simulations for some research, and I'm trying to use as
> many computers as possible.  Something strange though: one of my machines
> seems to have something wrong somewhere, and I'm at a loss.
>
> If I do variable dumps prinf style as the program runs, it's clear the data in
> the variables is off by one from what it should be (if a=1, b=2, then when run
> on this machine b == 1 and a == something unknown.
>
> I even tried to compile the code on this machine, and it compiles without
> error, but still segfaults when run.  I'm running this same code on three
> other machines with no problems (and it runs valgrind clean).
>
> I thought corruption, but I did a debsums check of everything on the system,
> and I put a new kernel in from another machine.  Still the same.  Any ideas?
>
> This is a Debian stable system and the problem happened with both a 2.4.27
> kernel and 2.6.15 kernel.


strace -s 2048 -fvvvto output.strace <binarytorun>

will sometimes give useful info.


I'd also look at ldd and ldtrace output.

It's possible that you've got bad memory in the box, try running memcheck.

Hugh