How can I know what is tainting my kernel

[greg@kroah.com (Greg KH)]

On Sun, Nov 13, 2011 at 07:47:11PM +0100, Jonathan Neusch?fer wrote:
> On Sat, Nov 12, 2011 at 04:39:59PM -0800, Greg KH wrote:
> > On Sun, Nov 13, 2011 at 01:18:47AM +0100, Jonathan Neusch?fer wrote:
> > > On Sat, Nov 12, 2011 at 03:49:53PM -0800, Greg KH wrote:
> > > > On Sat, Nov 12, 2011 at 08:23:32PM -0200, Daniel Hilst Selli wrote:
> > > > > Two questions about taint system..
> > > > > 
> > > > > 1. I have a installation of archlinux with kernel 3.0, just after boot I 
> > > > > cat /proc/sys/kenrel/tainted and receives 1024, but cat 
> > > > > /var/log/messages | grep -i taint gives me no output. How can I know 
> > > > > what is tainting my kernel?
> > > > 
> > > > Look for the "BIOS is broken..." message, 1024 is
> > > > TAINT_FIRMWARE_WORKAROUND.
> > > 
> > > No, it's TAINT_CRAP.
> > 
> > Really?  As the person who added TAINT_CRAP to the kernel, for some
> > foolish reason I thought that was the 10th bit, not the 11th bit, which
> > would be 1024, right?
> 
> It's defined as 10 in kernel.h, which makes it actually the 11th bit,
> and it's documented as 1024 in Documentation/sysctl/kernel.txt.

Doh, you are right, I was thinking that set_bit() started with 1 as the
rightmost bit, when that would be 0.

greg k-h