I can reproduce this issue with Raring. It doesn't seem to happen with Quantal.
The value of 2 for /proc/sys/kernel/tainted may indicate: #define TAINT_UNSAFE_SMP 2 Since I can reproduce the bug, I'll perform a kernel bisect to see what commit introduced this regression. ** Tags added: regression-release -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1096497 Title: Disabling lock debugging due to kernel taint with no apparent cause To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1096497/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
