Description of problem: Started system, authenticated to Kerberos and started Evolution - which also uses Kerberos authentication to corporate e-mail account. Version-Release number of selected component: evolution-data-server-3.40.3-1.fc34 Additional info: reporter: libreport-2.15.2 backtrace_rating: 4 cmdline: /usr/libexec/evolution-calendar-factory crash_function: g_type_check_instance_cast executable: /usr/libexec/evolution-calendar-factory journald_cursor: s=4c619185ca304e839bf3dfedbd351f42;i=16ace8;b=f55d7f89dc52417e92fb5a4f32a52b30;m=1a9d1f1e;t=5c8dcca8e9c26;x=1a666948cfce6612 kernel: 5.13.6-200.fc34.x86_64 rootdir: / runlevel: N 5 type: CCpp uid: 1000 Truncated backtrace: Thread no. 1 (9 frames) #0 g_type_check_instance_cast at ../gobject/gtype.c:4114 #1 e_soup_auth_negotiate_message_finished at /usr/src/debug/evolution-ews-3.40.3-1.fc34.x86_64/src/EWS/common/e-soup-auth-negotiate.c:118 #2 _g_closure_invoke_va at ../gobject/gclosure.c:873 #5 soup_session_process_queue_item at ../libsoup/soup-session.c:2036 #7 async_run_queue at ../libsoup/soup-session.c:2085 #8 idle_run_queue at ../libsoup/soup-session.c:2112 #12 g_main_context_iterate.constprop.0 at ../glib/gmain.c:4131 #14 e_ews_soup_thread at /usr/src/debug/evolution-ews-3.40.3-1.fc34.x86_64/src/EWS/common/e-ews-connection.c:1799 #15 g_thread_proxy at ../glib/gthread.c:826
Created attachment 1811346 [details] File: backtrace
Created attachment 1811347 [details] File: cgroup
Created attachment 1811348 [details] File: core_backtrace
Created attachment 1811349 [details] File: cpuinfo
Created attachment 1811350 [details] File: dso_list
Created attachment 1811351 [details] File: environ
Created attachment 1811352 [details] File: exploitable
Created attachment 1811353 [details] File: limits
Created attachment 1811354 [details] File: maps
Created attachment 1811355 [details] File: mountinfo
Created attachment 1811356 [details] File: open_fds
Created attachment 1811357 [details] File: proc_pid_status
Thanks for a bug report. I think this is the first time I see such crash. Looking into the code I see some weak points there, which I'm going to fix.
I cannot reproduce this, but I tried to address this with [1] for 3.41.2+ and 3.40.4+. [1] https://gitlab.gnome.org/GNOME/evolution-ews/-/commit/291f86e61783337fb26dbe2f4ebb10c3c18cad18