Re: [Hampshire] kill -9 pid now working

--- On Tue, 12/5/09, James Courtier-Dutton <james.dutton@???> wrote:

> Hi,
>
> I have a system where "kill -9 pid" as root, is not
> working.
> As a result, even the reboot command also does nothing.

Sounds like a possible rootkit says paranoia.

Are you able to kill processes with signal 9 in 'top' ?

Are any commands segfaulting ? * use '> output 2>&1' as STDERR may not be going to where expected.

>
> Does anyone know why this might happen?
>
strace is your friend.

> renice seems to work, in that reading the new priority
> shows that the
> priority has changed.
>
> I can remotely connect to the system so it is functioning
> quite well
> up to a point.
> "sync" also just hangs.

You have enough disk space and have fsck'd ? i've seen errornous filesystems report 'no space left' incorrectly, this had a knock on effect
to many programs producing un-expected results.

>
> "dmesg" shows nothing wrong with the system. I.e. no stack
> traces, or
> HD sector errors.
>
> Any ideas?



Isaac.