Comment 8 for bug 1761737

Ok, I can reproduce this with a simple "smbclient -L localhost -N" and this smb.conf:

[global]
 dns proxy = No
 domain master = No
 kerberos method = secrets and keytab
 local master = No
 log file = /var/log/samba/log.%m
 map to guest = Bad User
 max log size = 1000
 obey pam restrictions = Yes
 pam password change = Yes
 panic action = /usr/share/samba/panic-action %d
 passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
 passwd program = /usr/bin/passwd %u
 security = USER
 server role = standalone server
 server string = %h %a
 syslog = 0
 unix password sync = Yes
 usershare allow guests = Yes
 idmap config * : backend = tdb

The moment I remove your "kerberos method" option (i.e., comment it), the crash no longer happens.