Comment 9 for bug 1818638

Thanks. Unfortunately I couldn't get more info from the crash file.

I also did a quick test with a windows 10 machine, but it connected just fine to the samba shares I prepared on xenial, with and without authentication, and your smb.conf changes. It used protocol 3.11. I don't have a win7 vm to test atm.

If you can reproduce the crash somewhat reliably, I would appreciate a test with the packages available in this ppa:

https://launchpad.net/~ahasenack/+archive/ubuntu/samba-no-protocol-segfault-1818638

It's still building as I write this. You can check the build status in this page:

https://launchpad.net/~ahasenack/+archive/ubuntu/samba-no-protocol-segfault-1818638/+packages

This package has the patch from the samba upstream bug https://bugzilla.samba.org/show_bug.cgi?id=12610