* How can I know what is tainting my kernel
@ 2011-11-12 22:23 Daniel Hilst Selli
2011-11-12 23:49 ` Greg KH
0 siblings, 1 reply; 6+ messages in thread
From: Daniel Hilst Selli @ 2011-11-12 22:23 UTC (permalink / raw)
To: kernelnewbies
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?
2. I was studying char devices, and have writed some code. I have put
the MODULE_LICENSE("GPL"); on the module, build it, put it on a initrd
image and boot with qemu using -kernel and -initrd options. When I
loadit with modprobe I receives a message on console saying that kernel
was tainted and /proc/sys/kernel/tainted gives me 4024. There is any
other thing on module, besides license that can taint the kernel?
Here is the code -> http://sprunge.us/RHNa?c
[]'s
^ permalink raw reply [flat|nested] 6+ messages in thread
* How can I know what is tainting my kernel
2011-11-12 22:23 How can I know what is tainting my kernel Daniel Hilst Selli
@ 2011-11-12 23:49 ` Greg KH
2011-11-13 0:18 ` Jonathan Neuschäfer
0 siblings, 1 reply; 6+ messages in thread
From: Greg KH @ 2011-11-12 23:49 UTC (permalink / raw)
To: kernelnewbies
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.
> 2. I was studying char devices, and have writed some code. I have put
> the MODULE_LICENSE("GPL"); on the module, build it, put it on a initrd
> image and boot with qemu using -kernel and -initrd options. When I
> loadit with modprobe I receives a message on console saying that kernel
> was tainted and /proc/sys/kernel/tainted gives me 4024. There is any
> other thing on module, besides license that can taint the kernel?
Yes, lots of things, look at kernel.h for the full list.
hope this helps,
greg k-h
^ permalink raw reply [flat|nested] 6+ messages in thread
* How can I know what is tainting my kernel
2011-11-12 23:49 ` Greg KH
@ 2011-11-13 0:18 ` Jonathan Neuschäfer
2011-11-13 0:39 ` Greg KH
0 siblings, 1 reply; 6+ messages in thread
From: Jonathan Neuschäfer @ 2011-11-13 0:18 UTC (permalink / raw)
To: kernelnewbies
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.
>
> > 2. I was studying char devices, and have writed some code. I have put
> > the MODULE_LICENSE("GPL"); on the module, build it, put it on a initrd
> > image and boot with qemu using -kernel and -initrd options. When I
> > loadit with modprobe I receives a message on console saying that kernel
> > was tainted and /proc/sys/kernel/tainted gives me 4024. There is any
> > other thing on module, besides license that can taint the kernel?
>
> Yes, lots of things, look at kernel.h for the full list.
It's also documented in Documentation/sysctl/kernel.txt, but
TAINT_FIRMWARE_WORKAROUND and TAINT_OOT_MODULE are not.
Thanks,
Jonathan Neusch?fer
^ permalink raw reply [flat|nested] 6+ messages in thread
* How can I know what is tainting my kernel
2011-11-13 0:18 ` Jonathan Neuschäfer
@ 2011-11-13 0:39 ` Greg KH
2011-11-13 18:47 ` Jonathan Neuschäfer
0 siblings, 1 reply; 6+ messages in thread
From: Greg KH @ 2011-11-13 0:39 UTC (permalink / raw)
To: kernelnewbies
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?
> > > 2. I was studying char devices, and have writed some code. I have put
> > > the MODULE_LICENSE("GPL"); on the module, build it, put it on a initrd
> > > image and boot with qemu using -kernel and -initrd options. When I
> > > loadit with modprobe I receives a message on console saying that kernel
> > > was tainted and /proc/sys/kernel/tainted gives me 4024. There is any
> > > other thing on module, besides license that can taint the kernel?
> >
> > Yes, lots of things, look at kernel.h for the full list.
>
> It's also documented in Documentation/sysctl/kernel.txt, but
> TAINT_FIRMWARE_WORKAROUND and TAINT_OOT_MODULE are not.
TAINT_OOT_MODULE is not in 3.0.
greg k-h
^ permalink raw reply [flat|nested] 6+ messages in thread
* How can I know what is tainting my kernel
2011-11-13 0:39 ` Greg KH
@ 2011-11-13 18:47 ` Jonathan Neuschäfer
2011-11-16 0:24 ` Greg KH
0 siblings, 1 reply; 6+ messages in thread
From: Jonathan Neuschäfer @ 2011-11-13 18:47 UTC (permalink / raw)
To: kernelnewbies
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.
>
> > > > 2. I was studying char devices, and have writed some code. I have put
> > > > the MODULE_LICENSE("GPL"); on the module, build it, put it on a initrd
> > > > image and boot with qemu using -kernel and -initrd options. When I
> > > > loadit with modprobe I receives a message on console saying that kernel
> > > > was tainted and /proc/sys/kernel/tainted gives me 4024. There is any
> > > > other thing on module, besides license that can taint the kernel?
> > >
> > > Yes, lots of things, look at kernel.h for the full list.
> >
> > It's also documented in Documentation/sysctl/kernel.txt, but
> > TAINT_FIRMWARE_WORKAROUND and TAINT_OOT_MODULE are not.
>
> TAINT_OOT_MODULE is not in 3.0.
Okay, that was a bit off-topic. My point was that the "tainted" entry is
only documented up to TAINT_CRAP in the current mainline kernel.
thanks,
Jonathan Neusch?fer
^ permalink raw reply [flat|nested] 6+ messages in thread
* How can I know what is tainting my kernel
2011-11-13 18:47 ` Jonathan Neuschäfer
@ 2011-11-16 0:24 ` Greg KH
0 siblings, 0 replies; 6+ messages in thread
From: Greg KH @ 2011-11-16 0:24 UTC (permalink / raw)
To: kernelnewbies
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
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2011-11-16 0:24 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-11-12 22:23 How can I know what is tainting my kernel Daniel Hilst Selli
2011-11-12 23:49 ` Greg KH
2011-11-13 0:18 ` Jonathan Neuschäfer
2011-11-13 0:39 ` Greg KH
2011-11-13 18:47 ` Jonathan Neuschäfer
2011-11-16 0:24 ` Greg KH
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