Comment 0 for bug 1946686

As mentioned at https://answers.launchpad.net/ubuntu/+source/zfs-linux/+question/696659, the following pull request fixes a panic acquiring a lock: https://github.com/openzfs/zfs/pull/11682

This fix does not appear to be a part of the latest Ubuntu 20.04 release:

zfsutils-linux:
  Installed: 0.8.3-1ubuntu12.12
  Candidate: 0.8.3-1ubuntu12.12
  Version table:
 *** 0.8.3-1ubuntu12.12 500
        500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     0.8.3-1ubuntu12.9 500
        500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
     0.8.3-1ubuntu12 500
        500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages

Of note is this issue where the bug is reported against the Ubuntu 0.8.3 packages: https://github.com/openzfs/zfs/issues/10642