panic_action / ptrace: Operation not permitted

[Arran Cudbard-Bell]

> I ran the panic_action command-line as root on a running process - and
> get the ptrace just fine.
> 
> I read up on this on Google, and found that this would typically be a
> problem when using the "yama" security module, which I don't (there is
> no /proc/sys/kernel/yama subdir).
> 
> This is a very recent system, openSUSE 13.1 with current patchlevel. The
> kernel is the shipped SuSE-flavoured "default" kernel.
> 
> Before I dig into running a vanilla kernel to see if there's SUSE magic
> happening on their flavour - am I looking at the wrong place? Is this
> problem known and solved?

I had the yama problem on ubuntu, and poking the relevant file in the
yama subdir solved it. But if you're not running yama... hmm.

OK, someone reporting *exactly* the same problem back in 2008 on the
GBD list.

Here is the fix they helpfully posted:
https://www.sourceware.org/ml/gdb/2008-01/msg00246.html

Here's the original message:
http://lists.gnu.org/archive/html/bug-gdb/2008-01/msg00002.html

Googlefoo!

Arran Cudbard-Bell <a.cudbardb at freeradius.org>
FreeRADIUS Development Team

FD31 3077 42EC 7FCD 32FE 5EE2 56CF 27F9 30A8 CAA2

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