Re: useradd segmentation fault
On Sat, 08 Nov 2014, Joris Bolsens wrote:
> Sorry, pretty new to linux still. put a few questions in-line.
No worries.
> On 11/08/2014 09:39 AM, Don Armstrong wrote:
>
> > Before filing a bug, please
> >
> > 1) Enable coredumps
> Did some googling, I have to recompile the kernel for this?
> the one thing i did find on how to do it without was for the fedora
> kernel.
Nah. All you have to do is something like the following:
ulimit -c unlimited;
useradd foo;
gdb /usr/sbin/useradd core;
bt full;
or similar.
You'll also want to install libc6-dbg gdb; and similar.
This will give you an idea of where the code is segfaulting, and whether
it's in a library which useradd is calling, or something else entirely.
If the backtrace doesn't look at all useful, something like:
apt-get build-dep passwd;
DEB_BUILD_OPTS="nostrip,noopt" apt-get source -b passwd;
should in theory give you a passwd .deb file with debugging symbols and
no optimization which you can then install to give you a more useful
backtrace.
You also might start by just reinstalling passwd in case there was some
corruption somewhere to make sure you can replicate the segfault.
--
Don Armstrong http://www.donarmstrong.com
I finally developed
a computer with feelings.
It just doesn't have
feelings for me.
-- a softer world #633
http://www.asofterworld.com/index.php?id=633
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