Bug 364036

Summary:	PolicyKit-KDE-Agent1 crashes when an instance accesses it.
Product:	[Plasma] policykit-kde-agent-1	Reporter:	erald.silo86
Component:	polkit-kde-authentication-agent-1	Assignee:	Jaroslav Reznik <jreznik>
Status:	RESOLVED WORKSFORME
Severity:	crash	CC:	rdieter
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	5.5.5
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description erald.silo86 2016-06-06 19:45:51 UTC

Application: polkit-kde-authentication-agent-1 (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.1.21-14-default x86_64
Distribution: "openSUSE Leap 42.1 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:
OS: OpenSUSE Leap 42.1 64-bit with kernel version: 4.1.21-14
After an update, I rebooted the PC, and than, the PolicyKit-KDE-Agent always fails to start.

The crash can be reproduced every time.

-- Backtrace:
Application: PolicyKit1 KDE Agent (polkit-kde-authentication-agent-1), signal: Bus error
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f746ced4880 (LWP 2204))]

Thread 3 (Thread 0x7f745d2dc700 (LWP 2205)):
#0  0x00007f74698c0bbd in poll () from /lib64/libc.so.6
#1  0x00007f746752f422 in ?? () from /usr/lib64/libxcb.so.1
#2  0x00007f746753100f in xcb_wait_for_event () from /usr/lib64/libxcb.so.1
#3  0x00007f745f6313c9 in ?? () from /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007f7469fbb32f in QThreadPrivate::start (arg=0x16656f0) at thread/qthread_unix.cpp:331
#5  0x00007f746710c0a4 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f74698c8fed in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f7452641700 (LWP 2207)):
#0  0x00007f74698bcc8d in read () from /lib64/libc.so.6
#1  0x00007f7467d66b60 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007f7467d25999 in g_main_context_check () from /usr/lib64/libglib-2.0.so.0
#3  0x00007f7467d25df8 in ?? () from /usr/lib64/libglib-2.0.so.0
#4  0x00007f7467d2619a in g_main_loop_run () from /usr/lib64/libglib-2.0.so.0
#5  0x00007f7467a3c426 in gdbus_shared_thread_func (user_data=0x16df6f0) at gdbusprivate.c:274
#6  0x00007f7467d4af65 in ?? () from /usr/lib64/libglib-2.0.so.0
#7  0x00007f746710c0a4 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f74698c8fed in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f746ced4880 (LWP 2204)):
[KCrash Handler]
#6  0x00007f74699091dc in __strncmp_ssse3 () from /lib64/libc.so.6
#7  0x00007f746ba96e54 in qstrncmp (len=4096, str2=<optimized out>, str1=<optimized out>) at /usr/include/qt5/QtCore/qbytearray.h:92
#8  findNamedEntry (key=..., this=0x7f7451431000) at /usr/src/debug/kcoreaddons-5.21.0/src/lib/caching/kshareddatacache.cpp:771
#9  KSharedDataCache::find (this=0x16eb8b0, key=..., destination=destination@entry=0x7ffc4e0b34b0) at /usr/src/debug/kcoreaddons-5.21.0/src/lib/caching/kshareddatacache.cpp:1584
#10 0x00007f746c6d067a in KIconLoaderPrivate::findCachedPixmapWithPath (this=0x16eb0a0, key=..., data=..., path=...) at /usr/src/debug/kiconthemes-5.21.0/src/kiconloader.cpp:835
#11 0x00007f746c6d0a3c in KIconLoader::loadIcon (this=0x7f746c8e4bb0 <(anonymous namespace)::Q_QGS_globalIconLoader::innerFunction()::holder>, _name=..., group=group@entry=KIconLoader::NoGroup, size=size@entry=32, state=state@entry=0, overlays=..., path_store=path_store@entry=0x0, canReturnNull=canReturnNull@entry=true) at /usr/src/debug/kiconthemes-5.21.0/src/kiconloader.cpp:1142
#12 0x000000000041121b in AuthDialog::AuthDialog (this=0x17290b0, actionId=..., message=..., iconName=..., details=..., identities=..., parent=0) at /usr/src/debug/polkit-kde-agent-1-5.5.5/AuthDialog.cpp:118
#13 0x000000000040df72 in PolicyKitListener::initiateAuthentication (this=this@entry=0x16c6e50, actionId=..., message=..., iconName=..., details=..., cookie=..., identities=..., result=result@entry=0x174bfb0) at /usr/src/debug/polkit-kde-agent-1-5.5.5/policykitlistener.cpp:93
#14 0x00007f746c4a3f8d in PolkitQt1::Agent::ListenerAdapter::polkit_qt_listener_initiate_authentication (this=<optimized out>, listener=listener@entry=0x16a3320, action_id=action_id@entry=0x1728df0 "org.freedesktop.NetworkManager.settings.modify.own", message=message@entry=0x1728e23 "System policy prevents modification of personal network settings", icon_name=icon_name@entry=0x1728e64 "nm-icon", details=details@entry=0x7f744c001380, cookie=cookie@entry=0x1728e9e "2-ba8d9defcf9af4a57bd66f0f8fb13d5e-1-2538d52b6022651b7fda3c49d8c757b2", identities=identities@entry=0x16e7a60, cancellable=cancellable@entry=0x16e2fa0, result=result@entry=0x16e0ae0) at /usr/src/debug/polkit-qt-1-0.112.0/agent/listeneradapter.cpp:102
#15 0x00007f746c4a4dbb in polkit_qt_listener_initiate_authentication (agent_listener=0x16a3320, action_id=0x1728df0 "org.freedesktop.NetworkManager.settings.modify.own", message=0x1728e23 "System policy prevents modification of personal network settings", icon_name=0x1728e64 "nm-icon", details=0x7f744c001380, cookie=0x1728e9e "2-ba8d9defcf9af4a57bd66f0f8fb13d5e-1-2538d52b6022651b7fda3c49d8c757b2", identities=0x16e7a60, cancellable=0x16e2fa0, callback=0x7f7468240230 <auth_cb>, user_data=0x17549c0) at /usr/src/debug/polkit-qt-1-0.112.0/agent/polkitqtlistener.cpp:137
#16 0x00007f746824005e in auth_agent_handle_begin_authentication (invocation=0x7f744c003070, parameters=0x7f7467a82755, server=0x16c97e0) at polkitagentlistener.c:678
#17 auth_agent_handle_method_call (connection=<optimized out>, sender=sender@entry=0x7f744c0011e0 ":1.5", object_path=object_path@entry=0x7f744c002cc0 "/org/kde/PolicyKit1/AuthenticationAgent", interface_name=interface_name@entry=0x7f744c005020 "org.freedesktop.PolicyKit1.AuthenticationAgent", method_name=method_name@entry=0x7f744c002d10 "BeginAuthentication", parameters=parameters@entry=0x7f744c003490, invocation=invocation@entry=0x7f744c003070, user_data=user_data@entry=0x16c97e0) at polkitagentlistener.c:291
#18 0x00007f7467a2d2b1 in call_in_idle_cb (user_data=0x7f744c003070) at gdbusconnection.c:4884
#19 0x00007f7467d25b65 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#20 0x00007f7467d25ed8 in ?? () from /usr/lib64/libglib-2.0.so.0
#21 0x00007f7467d25f7c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#22 0x00007f746a1edd6c in QEventDispatcherGlib::processEvents (this=0x1698f20, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#23 0x00007f746a194d53 in QEventLoop::exec (this=this@entry=0x7ffc4e0b3ea0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#24 0x00007f746a19c8f6 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#25 0x000000000040c5d3 in main (argc=1, argv=0x7ffc4e0b40b8) at /usr/src/debug/polkit-kde-agent-1-5.5.5/main.cpp:59

Possible duplicates by query: bug 340657, bug 339285.

Reported using DrKonqi

Comment 1 Rex Dieter 2016-06-07 13:32:09 UTC

Looks like a KSharedDataCache issue, dup of bug #340657 ?

Comment 2 erald.silo86 2016-06-11 08:20:23 UTC

I solved this problem. I was playing around with my system and I changed the look of my "Workspace Theme" (System Settings->Workspace Theme->Look and Feel). That resolved the problem and the Polkit-KDE-Authentication-Agent is working again.