Some gdb debugging is
#1 0x00007f3abc9a1bc8 in st_label_set_text (label=0x555b3f768d10,
text=0x555b5369d360 "...")
at ../../gnome-shell/src/st/st-label.c:331
331 ctext = CLUTTER_TEXT (priv->label);
(gdb) list
326
327 g_return_if_fail (ST_IS_LABEL (label));
328 g_return_if_fail (text != NULL);
329
330 priv = label->priv;
331 ctext = CLUTTER_TEXT (priv->label);
332
333 if (clutter_text_get_editable (ctext) ||
334 g_strcmp0 (clutter_text_get_text (ctext), text) != 0)
335 {
(gdb) print label
$1 = (StLabel *) 0x555b3f768d10
(gdb) print *label
$2 = {parent_instance = {parent_instance = {parent_instance = {g_type_instance
= {g_class = 0x555b3e5ea510},
ref_count = 1, qdata = 0x555b3f759800}, flags = 0, private_flags = 0,
priv = 0x555b3f7689f0}},
priv = 0x555b3f7688b0}
(gdb) print *label->priv
$3 = {label = 0x555b3f712210, text_shadow_pipeline = 0x0, shadow_width = -1,
shadow_height = -1}
(gdb) print *label->priv->labe
There is no member named labe.
(gdb) print *label->priv->label
$4 = {parent_instance = {g_type_instance = {g_class = 0x7f3abdf80be0
<wrapped_gobj_dispose_notify(gpointer, GObject*)>}, ref_count =
1102656128, qdata = 0x30}, flags = 113,
private_flags = 0, priv = 0x68733b6572616873}
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-shell in Ubuntu.
https://bugs.launchpad.net/bugs/1759621
Title:
gnome-shell crashed with SIGSEGV in g_type_check_instance_cast() from
st_label_set_text() from ffi_call_unix64()
Status in gnome-shell package in Ubuntu:
Confirmed
Bug description:
https://errors.ubuntu.com/problem/811164cadd3e9e891f9e2d439bda59925f91a62c
---
trying to get vpn up and running
ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: gnome-shell 3.28.0-0ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
Uname: Linux 4.15.0-13-generic x86_64
ApportVersion: 2.20.9-0ubuntu1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Mar 28 18:00:19 2018
DisplayManager: gdm3
ExecutablePath: /usr/bin/gnome-shell
GsettingsChanges:
b'org.gnome.shell' b'enabled-extensions'
b"['vpn-indica...@howdoicomputer.fastmail.com']"
b'org.gnome.shell' b'app-picker-view' b'uint32 1'
b'org.gnome.shell' b'favorite-apps' b"['firefox.desktop',
'rhythmbox.desktop', 'org.gnome.Nautilus.desktop',
'org.gnome.Software.desktop', 'yelp.desktop', 'org.gnome.Terminal.desktop',
'cisco-anyconnect.desktop']"
b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
InstallationDate: Installed on 2018-03-23 (4 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.1)
ProcCmdline: /usr/bin/gnome-shell
SegvAnalysis:
Segfault happened at: 0x7fd17cf23d3d <g_type_check_instance_cast+77>:
movzbl 0x16(%rax),%edx
PC (0x7fd17cf23d3d) ok
source "0x16(%rax)" (0x00024562) not located in a known VMA region (needed
readable region)!
destination "%edx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: gnome-shell
StacktraceTop:
g_type_check_instance_cast () at
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
st_label_set_text () at /usr/lib/gnome-shell/libst-1.0.so
ffi_call_unix64 () at /usr/lib/x86_64-linux-gnu/libffi.so.6
ffi_call () at /usr/lib/x86_64-linux-gnu/libffi.so.6
() at /usr/lib/libgjs.so.0
Title: gnome-shell crashed with SIGSEGV in g_type_check_instance_cast()
UpgradeStatus: Upgraded to bionic on 2018-03-24 (4 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
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https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1759621/+subscriptions
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