kactivitymanagerd crashed with SIGSEGV in QMetaObject::invokeMethod()

[Laurent Bonnaud]

I get this crash every time I log in plasma.

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: kactivities 5.18.0-0ubuntu1
Uname: Linux 4.5.0-040500-lowlatency x86_64
ApportVersion: 2.20.1-0ubuntu1
Architecture: amd64
CurrentDesktop: KDE
Date: Sun Apr 3 12:20:28 2016
ExecutablePath: /usr/bin/kactivitymanagerd
ProcCmdline: /usr/bin/kactivitymanagerd start-daemon
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fd547ebff92 <QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument)+754>: mov (%r14),%rax
 PC (0x7fd547ebff92) ok
 source "(%r14)" (0x7575757575757575) not located in a known VMA region (needed readable region)!
 destination "%rax" ok
 Stack memory exhausted (SP below stack segment)
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: kactivities-kf5
Title: kactivitymanagerd crashed with SIGSEGV in QMetaObject::invokeMethod()
UpgradeStatus: Upgraded to xenial on 2016-03-31 (3 days ago)
UserGroups: adm admin cdrom dialout lpadmin mythtv plugdev sambashare staff

[Apport retracing service (apport)]

StacktraceTop:
 QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () from /tmp/apport_sandbox_ZNvKU8/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
 StatsPlugin::currentActivity() const () from /tmp/apport_sandbox_ZNvKU8/usr/lib/x86_64-linux-gnu/qt5/plugins/kactivitymanagerd/1/kactivitymanagerd_plugin_sqlite.so
 ResourceScoreMaintainer::Private::run() () from /tmp/apport_sandbox_ZNvKU8/usr/lib/x86_64-linux-gnu/qt5/plugins/kactivitymanagerd/1/kactivitymanagerd_plugin_sqlite.so
 QThreadPrivate::start(void*) () from /tmp/apport_sandbox_ZNvKU8/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
 start_thread (arg=0x7fd521cb0700) at pthread_create.c:333

[Launchpad Janitor (janitor)]

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

[Justa Guy (nginus)]

In my case I was able to stop the error at logon by uninstalling (purging) kactivities, while leaving libkactivities6 installed for dependencies.

[Laurent Bonnaud (laurent-bonnaud)]

This bug is now fixed.