Re: Tainted kernel possible caused by postgresql

Hi Merlin,

Yes it is running on kvm.

Regards,
Norbert
On Jun 11, 2015 2:37 AM, "Merlin Moncure" <mmoncure(at)gmail(dot)com> wrote:

> On Tue, Jun 9, 2015 at 3:32 AM, Albe Laurenz <laurenz(dot)albe(at)wien(dot)gv(dot)at>
> wrote:
> > Norbert Kiam Maclang wrote:
> >> I've been experiencing tainted kernel which is my guess caused by
> postgresql and I don't know where to
> >> start. I also guess that this might be a kernel issue. I tried
> 3.13.0-49 and 3.13.0-53 but no good
> >> results. This is happening on 2 of our Ubuntu 14.04.2 servers with
> postgresql-9.3 version 9.3.5-
> >> 0ubuntu0.14.04.1. I am also using the same postgresql version and
> kernel to other 10 14.04.2 servers
> >> and doesn't seem to encounter this problem. Below is the kernel log:
> >
> > [...]
> >> kernel: [653314.516073] CPU: 1 PID: 32055 Comm: postgres Tainted: G
> W 3.13.0-53-generic #89-Ubuntu
> > [...]
> >
> > I don't see how PostgreSQL, which runs entirely in user space, could
> taint a kernel.
>
> Agreed. Even if postgres caused the kernel issues, the problem
> fundamentally lies with the kernel since userspace programs are not
> supposed to be able to harm the underlying operating system. Kernel
> bugs do happen and so do hardware issues which can sometimes
> masquerade as software issues. Is this system virtualized?
>
> merlin
>