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Why do I get this message - tainted kernel

asked 2016-01-18 12:42:41 -0500

gressj gravatar image

Why am I unable to report this error. The message reads - A kernel problem occurred, but your kernel has been tainted (flags:GW). Kernel maintainers are unable to diagnose tainted reports. What if anything should I do please?

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answered 2016-01-18 12:45:53 -0500

BRPocock gravatar image

Why you're getting the message: You've loaded a kernel module that is not under the GNU General Public License. The running copy of your kernel is no longer the “stock” kernel. Think of it a bit like “voiding your warranty.” The most common culprits are vendor-supplied 3D graphics kernel modules.

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Thanks - but I'm not aware that I have included anything which has not been loaded from one of the mirror sites. How would I find out if what you suggest has in fact happened please. (I'm a newby)

gressj gravatar imagegressj ( 2016-01-18 12:51:58 -0500 )edit

If you have more than one kernel crash, all of them except the first are marked as being tainted by the first crash. The count only resets when you reboot. Also, what graphics do you have? If you have nVidia and aren't using the OSS nouveau module, your kernel is considered tainted.

sideburns gravatar imagesideburns ( 2016-01-18 13:49:14 -0500 )edit

Thanks - but I have not installed any other than the nouveau module from the mirror site (Fedora 22 is my first Fedora system on my laptop having ditched Windows), and whilst I have had to re-boot because of an unresponsive desktop I am not aware that the kernel has crashed.

gressj gravatar imagegressj ( 2016-01-21 15:36:30 -0500 )edit

Nouveau won't taint the kernel, although the proprietary drivers will. And, once you reboot, you've loaded a clean copy of the kernel, so it's no longer tainted by the crash.

sideburns gravatar imagesideburns ( 2016-01-21 15:55:17 -0500 )edit

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Asked: 2016-01-18 12:42:41 -0500

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Last updated: Jan 18 '16