On Fri, Mar 9, 2018 at 9:49 AM, Joseph Salisbury <joseph.salisb...@canonical.com> wrote: > Did this issue start happening after an update/upgrade? Was there a > prior kernel version where you were not having this particular problem?
I don't think so; how we're using/clearing/stopping bcache has changed. I can reproduce this on multiple trusty kernels: 3.13.0-101-generic (buildd@lgw01-40) #148-Ubuntu SMP Thu Oct 20 22:08:32 UTC 2016 3.13.0-107-generic (buildd@lcy01-09) #154-Ubuntu SMP Tue Dec 20 09:57:27 UTC 2016 3.13.0-137-generic (buildd@lgw01-amd64-058) #186-Ubuntu SMP Mon Dec 4 19:09:19 UTC 2017 3.13.0-143-generic (buildd@lcy01-amd64-010) #192-Ubuntu SMP Tue Feb 27 10:45:36 UTC 2018 > > Would it be possible for you to test the latest upstream kernel? Refer > to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest > v4.16 kernel[0]. I can confirm that newer kernels do not have this issue: 4.4.0-116-generic (buildd@lcy01-amd64-023) (gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.4)) Xenial, Artful and Bionic are fine. > > If this bug is fixed in the mainline kernel, please add the following > tag 'kernel-fixed-upstream'. > > If the mainline kernel does not fix this bug, please add the tag: > 'kernel-bug-exists-upstream'. > > Once testing of the upstream kernel is complete, please mark this bug as > "Confirmed". > > > Thanks in advance. > > [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16-rc4 > > ** Changed in: linux (Ubuntu Trusty) > Importance: Undecided => Medium > > ** Changed in: linux (Ubuntu) > Importance: Undecided => Medium > > ** Tags added: kernel-da-key > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1754581 > > Title: > trusty bcache NULL pointer exception > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1754581/+subscriptions -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1754581 Title: trusty bcache NULL pointer exception To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1754581/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs