Comment 16 for bug 1690485

The plot thickens.

The configuration of the build appears to be partially implicated.
Could it be that with your ./configure flags, it's failing to find a
failing PAM or something?

When I build with the ./configure that you suggested, it works.
When I build with dpkg-buildpackage, on the same source code, it fails.

Output from the failing case, with your patch to add debug output,
attached as sshd-strace-20171026.txt