What are these warnings and what should I do?
Of course you should take any and all warnings seriously until proven
otherwise, but I remember seeing that exact warning from a fairly
recently built box with a fairly new kernel on it and then doing some
Google searching and finding out that most modern kernels will false a
few warnings like that LKM Trojan warning because of some setting I
don't quite remember right now.
Some of the kernel thread used to show up in ps as pid 0 but they are
actually some higher pid and thus their actual pid doesn't show up in
ps. Thats what used to cause the problem. It currently doesn't show
that on my system, don't know when it was changed.
Check the archives, there were several threads on the subject. Don't
remember the command but there was one of the commands I think under
/usr/lib/chkrootkit that showed which processes it thinks are
lkm. Maybe someone else can help.