That is correct. Ubuntu starts with the mainline kernel and adds patches on top. From your testing, it appears the bug may have been introduce by an Ubuntu SAUCE patch, since you cannot reproduce it with any of the upstream kernels.
We should figure out which Ubuntu kernel version introduced the bug. We can then perform a kernel bisect to identify the exact patch that caused this. The call trace looks similar to what is happening in bug 1734327. Can you see if the bug you are seeing happens with the test kernel I built for that bug: http://kernel.ubuntu.com/~jsalisbury/lp1731031/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1731031 Title: Kernel Oops with 17.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1731031/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
