This bug has been copied from bug #1559692 and has been proposed to be backported to 7.5 z-stream (EUS).
Using the reproducer I was not able to get vdo to hang or get any calltrace. Reading from /sys correctly produces either value ('0') or error ('cat: /sys/kvdo/vdo0/statistics/data_blocks_used: No such file or directory'). The start/stop cycle keeps going.
No regressions found as regression testing passed.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.