/usr/sbin/smbd:6:dump_core:smb_panic_s3:smb_panic:talloc_abort_access_after_free:talloc_chunk_from_ptr

[errors.ubuntu.com bug bridge]

The Ubuntu Error Tracker has been receiving reports about a problem regarding samba. This problem was most recently seen with package version 2:4.4.5+dfsg-2ubuntu3, the problem page at https://errors.ubuntu.com/problem/a8f99d3d007864062607a86378d8851af07eeed2 contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
If you do not have access to the Ubuntu Error Tracker you can request it at http://forms.canonical.com/reports/.