Comment # 2 on bug 1099147 from Jeff Mahoney

This landed in btrfsprogs 5.2.2:

commit d29f475108c8c8bc104fd8b79a789023e4acc755
Author: Jeff Mahoney <jeffm@suse.com>
Date:   Tue Aug 13 21:03:59 2019 -0400

    btrfs-progs: check if adding device would overflow while scanning

    It's theoretically possible to add multiple devices with sizes that add up
    to or exceed 16EiB.  A file system will be created successfully but will
    have a superblock with incorrect values for total_bytes and other fields.

    Kernels up to v5.0 will crash when they encounter this scenario.

    We need to check for overflow and reject the device if it would overflow.

TW should already have that version.  Leap will need a backport.