This may be https://bugzilla.samba.org/show_bug.cgi?id=13315, found also
in https://bugzilla.samba.org/show_bug.cgi?id=13315, but we don't even
have the crash file and I can't reproduce it at the moment by just
connecting using SMB1: it won't crash.
** Bug watch added: Samba Bugzilla #13315
Is samba running fine now, or you really don't use it, in which case it
could be uninstalled perhaps?
In any case, there isn't much we can do without the crash file. If this
is recurring, I'd suggest you collect logs with apport and attach them
to this bug. This can be done by running this