gnome-shell-calendar-server crashed with SIGSEGV in icaltimezone_get_utc_offset()

[Alexander Charters]

https://errors.ubuntu.com/problem/6beead7e96eaeffc4ef77511ca7b9e70982af8c0

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gnome-shell-calendar-server crashed with SIGSEGV in icaltimezone_get_utc_offset()

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: gnome-shell 3.26.2-0ubuntu2
ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8
Uname: Linux 4.13.0-17-generic x86_64
ApportVersion: 2.20.8-0ubuntu3
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Dec 11 11:57:30 2017
DisplayManager: gdm3
ExecutablePath: /usr/lib/gnome-shell/gnome-shell-calendar-server
GsettingsChanges:
 b'org.gnome.shell' b'app-picker-view' b'uint32 1'
 b'org.gnome.shell' b'favorite-apps' b"['org.gnome.Nautilus.desktop', 'firefox.desktop', 'google-chrome.desktop', 'libreoffice-startcenter.desktop', 'org.gnome.Software.desktop', 'gnome-control-center.desktop', 'org.gnome.Screenshot.desktop']"
 b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
InstallationDate: Installed on 2017-11-15 (26 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20171114)
ProcCmdline: /usr/lib/gnome-shell/gnome-shell-calendar-server
ProcEnviron:
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
 PATH=(custom, no user)
 LANGUAGE=en_GB:en
 LANG=en_GB.UTF-8
SegvAnalysis:
 Segfault happened at: 0x7feb6b6963a8 <icaltimezone_get_utc_offset+72>: mov 0x30(%rdi),%rbp
 PC (0x7feb6b6963a8) ok
 source "0x30(%rdi)" (0x00000031) not located in a known VMA region (needed readable region)!
 destination "%rbp" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gnome-shell
StacktraceTop:
 icaltimezone_get_utc_offset () from /usr/lib/x86_64-linux-gnu/libical.so.3
 icaltimezone_convert_time () from /usr/lib/x86_64-linux-gnu/libical.so.3
 icaltime_convert_to_zone () from /usr/lib/x86_64-linux-gnu/libical.so.3
 icaltime_compare () from /usr/lib/x86_64-linux-gnu/libical.so.3
 ?? () from /usr/lib/x86_64-linux-gnu/libecal-1.2.so.19
Title: gnome-shell-calendar-server crashed with SIGSEGV in icaltimezone_get_utc_offset()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 icaltimezone_get_utc_offset (zone=0x1, tt=0x7ffd708df390, is_daylight=0x0) at ./src/libical/icaltimezone.c:841
 icaltimezone_convert_time (tt=tt@entry=0x7ffd708df390, from_zone=from_zone@entry=0x1, to_zone=to_zone@entry=0x7feb6b8c4420 <utc_timezone>) at ./src/libical/icaltimezone.c:808
 icaltime_convert_to_zone (tt=..., zone=0x7feb6b8c4420 <utc_timezone>) at ./src/libical/icaltime.c:981
 icaltime_compare (a_in=..., b_in=...) at ./src/libical/icaltime.c:737
 cal_obj_remove_duplicates_and_invalid_dates (occs=<optimized out>) at ./src/calendar/libecal/e-cal-recur.c:2712

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Also tracking in:
https://errors.ubuntu.com/problem/6beead7e96eaeffc4ef77511ca7b9e70982af8c0

[Daniel van Vugt (vanvugt)]

Zero crashes after 18.04 so consider it fixed.