Comment 10 for bug 1938013

I think all data is a little inconclusive. There are things across many places which seem to go wrong in seemingly random patterns. Which makes me a little suspicious about locking (alternatively maybe memory management). Looking over the changes there was mutex change which seems subtly different than the change made to upstream kernels. Not obviously different enough to be a clear suspect but maybe worth trying. For this I would need someone volunteering to try the kernel I prepared at https://launchpad.net/~smb/+archive/ubuntu/bionic (still needs to finish building some arches). This is not a officially signed kernel, so it only should be tried if secure-boot is not used or can be disabled.

The PPA can be added with "sudo apt-add-repository ppa:smb/bionic" (same command can also be used with --remove to get rid of it later).