Offhand, after analysing the bug and the patches mentioned in the
original description, I'm a bit skeptical that we're dealing with the
same issue here.

The upstream bug expliciltly mentions a limitation with crypt_r on RHEL
systems, and the person says that the underlying problem is that "...
libfreeblpriv3.so tries to read /tmp as a file to update as an RNG cache
during nspr init."  This doesn't seem to be the case for Ubuntu.

I inserted a few debugging statements around the crypt_rn call, ran the
samba-tool command, and noticed that there are two calls to crypt_rn:
the first one seems valid (with valid phrase and salt arguments), but
the second one contains a strange phrase which doesn't look like a
string at all, and this is the call that causes the error to be thrown.

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https://bugs.launchpad.net/bugs/1912750

Title:
  samba-tool domain provision crash with "password hash userPassword
  schemes" parameter

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