martinkostolny added a comment.
I've managed to get more info about the crash also by following this guide: https://community.kde.org/Guidelines_and_HOWTOs/Debugging/Debugging_IOSlaves#Attaching_gdb_to_an_io-slave Here is backtrace from gdb: F5905112: udsentry_bt.txt <https://phabricator.kde.org/F5905112> Here is debug log of sftp slave - I've added a debug line to each insert() method in `UDSEntryPrivate`: F5905116: udsentry_debug.log <https://phabricator.kde.org/F5905116> Performed test was done against a remote ssh server (Solaris), therefore IP and paths are changed by me in the debug log. But I get the same results when testing against my own localhost ssh server. I can do other tests on demand and on localhost :). I have Arch Linux with latest updates, Qt 5.11.0 installed. The rest of KDE is running in kdesrc-build environment, which was updated probably 2 days ago. REPOSITORY R241 KIO REVISION DETAIL https://phabricator.kde.org/D12696 To: jtamate, dfaure, #frameworks Cc: lbeltrame, asturmlechner, martinkostolny, kde-frameworks-devel, bruns, michaelh, ngraham