*** This bug is a security vulnerability *** Public security bug reported:
Starting today, gnome-shell is crashing when you try to unlock the screen. It then shows you your open windows (security?), and then it restarts to the lock screen from where it will crash again if you move mouse or press key. ProblemType: Crash DistroRelease: Ubuntu 20.04 Package: gnome-shell 3.36.0-2ubuntu2 ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27 Uname: Linux 5.4.0-21-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu25 Architecture: amd64 CurrentDesktop: GNOME Date: Wed Apr 8 20:09:33 2020 DisplayManager: gdm3 ExecutablePath: /usr/bin/gnome-shell GsettingsChanges: InstallationDate: Installed on 2018-03-14 (756 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180313) ProcCmdline: /usr/bin/gnome-shell RelatedPackageVersions: mutter-common 3.36.0-2ubuntu1 SegvAnalysis: Segfault happened at: 0x7fc85dfc3aaf <st_theme_node_get_icon_style+159>: repz cmpsb %es:(%rdi),%ds:(%rsi) PC (0x7fc85dfc3aaf) ok source "%es:(%rdi)" (0x7fc85dff48f9) ok destination "%ds:(%rsi)" (0x00004d83) not located in a known VMA region (needed writable region)! SegvReason: writing NULL VMA Signal: 11 SourcePackage: gnome-shell StacktraceTop: st_theme_node_get_icon_style () at /usr/lib/gnome-shell/libst-1.0.so st_texture_cache_load_gicon () at /usr/lib/gnome-shell/libst-1.0.so () at /usr/lib/gnome-shell/libst-1.0.so () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0 Title: gnome-shell crashed with SIGSEGV in st_theme_node_get_icon_style() UpgradeStatus: Upgraded to focal on 2019-11-25 (135 days ago) UserGroups: adm cdrom dip fax input kvm lpadmin lxd plugdev sambashare sbuild sudo separator: ** Affects: gnome-shell (Ubuntu) Importance: Critical Status: New ** Tags: amd64 apport-crash champagne focal third-party-packages ** Changed in: gnome-shell (Ubuntu) Importance: Undecided => Critical -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1871684 Title: gnome-shell crashed - endlessly in a loop from lock screen - with SIGSEGV in st_theme_node_get_icon_style() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1871684/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs