This line certainly looks suspicious: source "(%rdi)" (0x2c6e616d656c6f63) not located in a known VMA
That hex represents the ascii string ",cameloc". Does this look familiar? Have you filed a bug report upstream yet? If you have, could you paste the bug url here? Thanks ** Information type changed from Private Security to Public Security -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-calendar in Ubuntu. https://bugs.launchpad.net/bugs/1756901 Title: GNOME Calendar crashes when I try to add my Google Calendar account Status in gnome-calendar package in Ubuntu: New Bug description: I clicked the following: Manage your calendars -> Calendar settings, which led me to the Settings program, the Online Accounts section, selected "Google account", entered my data. My data was successfully taken. GNOME Calendar did not load my calendar and crashed. Upon restarting GNOME Calendar/restarting Ubuntu, it did not load my calendar either. Clicking "Synchronise" did not fix the situation either. Why do I think this is a security vulnerability? I am just a Computer Science student, but I imagine something might possibly come in the way so that personal data could be taken. It happens if I run the vanilla gnome-session as well. -Ubuntu Bionic Beaver (development branch), 18.04, on a fresh install. -GNOME Calendar version: 3.28.0-1 (Version table: 3.28.0-1 500) -What I expected to happen: load my Google Calendar data. -What happened instead: crashed, didn't load my Google Calendar data, even if my Google account data is loaded my GNOME. I hope Apport uploaded the debug information properly. If not, I can try to recreate the bug and upload the debug data, if necessary. ProblemType: Crash DistroRelease: Ubuntu 18.04 Package: gnome-calendar 3.28.0-1 ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7 Uname: Linux 4.15.0-12-generic x86_64 ApportVersion: 2.20.8-0ubuntu10 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Mar 19 16:40:14 2018 ExecutablePath: /usr/bin/gnome-calendar InstallationDate: Installed on 2018-03-19 (0 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180319) ProcCmdline: /usr/bin/gnome-calendar --gapplication-service SegvAnalysis: Segfault happened at: 0x7f3513ec4d12 <g_type_check_instance_cast+34>: mov (%rdi),%rbp PC (0x7f3513ec4d12) ok source "(%rdi)" (0x2c6e616d656c6f63) not located in a known VMA region (needed readable region)! destination "%rbp" ok SegvReason: reading unknown VMA Signal: 11 SourcePackage: gnome-calendar StacktraceTop: g_type_check_instance_cast () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 ?? () g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 Title: gnome-calendar crashed with SIGSEGV in g_type_check_instance_cast() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-calendar/+bug/1756901/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp