MSIX failure

Kurt Jaeger pi at opsec.eu
Thu Sep 9 14:33:56 UTC 2010


Hi!

> > Is this within a jail or something else along those lines?  I can't
> > reproduce the problem otherwise.  Frustrating!  Someone else on the list
> > might have ideas as to what could cause this.
> 
> Nope, this's a normal host. I've got securelevel on 1, but doubt that
> would affect this?

I assume it affects it.

http://www.freebsd.org/doc/en/books/faq/security.html#SECURELEVEL

Basically, when the securelevel is positive, the kernel restricts
certain tasks; not even the superuser (i.e., root) is allowed to
do them.

There:

# Write to kernel memory via /dev/mem and /dev/kmem.

So I assume it also restricts reading /dev/kmem ?


-- 
pi at opsec.eu            +49 171 3101372                        10 years to go !


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