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Message #01664
[Bug 1015292] Re: Snowshoe fails with QT5 with a segmentation fault while starting the application
Trace from the core dump (with qt enabled with dbg symbols):
root@ubuntu-desktop:/home/ubuntu/qt5/snowshoe-1.0~git+20120608# gdb ./snowshoe core
GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2) 7.4-2012.04
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "arm-linux-gnueabihf".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>...
Reading symbols from /home/ubuntu/qt5/snowshoe-1.0~git+20120608/snowshoe...done.
[New LWP 8591]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".
Core was generated by `./snowshoe'.
Program terminated with signal 11, Segmentation fault.
#0 0xb2453698 in QXcbConnection::initializeXFixes (this=0x210bc70) at qxcbconnection.cpp:1045
1045 xfixes_first_event = reply->first_event;
(gdb) l
1040
1041 void QXcbConnection::initializeXFixes()
1042 {
1043 xcb_generic_error_t *error = 0;
1044 const xcb_query_extension_reply_t *reply = xcb_get_extension_data(m_connection, &xcb_xfixes_id);
1045 xfixes_first_event = reply->first_event;
1046
1047 xcb_xfixes_query_version_cookie_t xfixes_query_cookie = xcb_xfixes_query_version(m_connection,
1048 XCB_XFIXES_MAJOR_VERSION,
1049 XCB_XFIXES_MINOR_VERSION);
(gdb) bt full
#0 0xb2453698 in QXcbConnection::initializeXFixes (this=0x210bc70) at qxcbconnection.cpp:1045
xfixes_query_cookie = {sequence = 0}
xfixes_query = 0xffffffff
__PRETTY_FUNCTION__ = "void QXcbConnection::initializeXFixes()"
error = 0x0
reply = 0x0
#1 0xb2451d70 in QXcbConnection::QXcbConnection (this=0x210bc70, nativeInterface=0x210bc08, displayName=0x0) at qxcbconnection.cpp:180
dpy = 0x210bf38
it = {data = 0x211286c, rem = 0, index = 1632}
screenNumber = 2
#2 0xb24558ac in QXcbIntegration::QXcbIntegration (this=0x21047e8, parameters=...) at qxcbintegration.cpp:101
No locals.
#3 0xb24663be in QXcbIntegrationPlugin::create (this=0x21005e8, system=..., parameters=...) at main.cpp:66
No locals.
#4 0xb49db386 in qLoadPlugin1<QPlatformIntegration, QPlatformIntegrationFactoryInterface, QStringList> (loader=0x2100408, key=..., parameter1=...)
at ../../include/QtCore/5.0.0/QtCore/private/../../../../../src/corelib/plugin/qfactoryloader_p.h:118
result = 0xbecd8650
factory = 0x21005f0
factoryObject = 0x21005e8
index = 3
#5 0xb49dac0e in QPlatformIntegrationFactory::create (key=..., platformPluginPath=...) at kernel/qplatformintegrationfactory_qpa.cpp:72
ret = 0xbecd8464
paramList = {<QList<QString>> = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}},
d = 0x21003b0}, d = 0x21003b0}}, <No data fields>}
platform = {static null = {<No data fields>}, d = 0x2100390}
#6 0xb49e0570 in init_platform (pluginArgument=..., platformPluginPath=...) at kernel/qguiapplication.cpp:629
name = {static null = {<No data fields>}, d = 0x2100390}
arguments = {<QList<QString>> = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}},
d = 0xb478ece8}, d = 0xb478ece8}}, <No data fields>}
__PRETTY_FUNCTION__ = "void init_platform(const QString&, const QString&)"
themeNames = {<QList<QString>> = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}},
d = 0xbecd84e8}, d = 0xbecd84e8}}, <No data fields>}
#7 0xb49e110a in QGuiApplicationPrivate::createPlatformIntegration (this=0x20ff968) at kernel/qguiapplication.cpp:753
platformPluginPath = {static null = {<No data fields>}, d = 0xb478d16c}
platformName = {d = 0x20ff898}
platformNameEnv = {d = 0xb478d0b4}
j = 1
#8 0xb49e11b8 in QGuiApplicationPrivate::createEventDispatcher (this=0x20ff968) at kernel/qguiapplication.cpp:760
No locals.
#9 0xb4eadb40 in QApplicationPrivate::createEventDispatcher (this=0x20ff968) at kernel/qapplication_qpa.cpp:90
No locals.
#10 0xb46de0d0 in QCoreApplication::init (this=0xbecd8650) at kernel/qcoreapplication.cpp:567
d = 0x20ff968
#11 0xb46ddf40 in QCoreApplication::QCoreApplication (this=0xbecd8650, p=...) at kernel/qcoreapplication.cpp:508
No locals.
#12 0xb49dfb12 in QGuiApplication::QGuiApplication (this=0xbecd8650, p=...) at kernel/qguiapplication.cpp:342
No locals.
#13 0xb4e427c4 in QApplication::QApplication (this=0xbecd8650, argc=@0xbecd864c: 1, argv=0xbecd8824, _internal=327680) at kernel/qapplication.cpp:554
No locals.
#14 0x00011380 in main (argc=1, argv=0xbecd8824) at main.cpp:35
app = {<QGuiApplication> = {<QCoreApplication> = {<QObject> = {_vptr.QObject = 0xb493ca88, static staticMetaObject = {d = {superdata = 0x0,
stringdata = 0xb4816e28, data = 0xb4816f00,
static_metacall = 0xb47125c5 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0,
extradata = 0x0}}, d_ptr = {d = 0x20ff968}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0xb4890300,
data = 0xb4897bb8, static_metacall = 0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {
superdata = 0x1e6780, stringdata = 0xb4813c98, data = 0xb4813dec,
static_metacall = 0xb46e0ffd <QCoreApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0,
extradata = 0x0}}, static self = 0xbecd8650}, static staticMetaObject = {d = {superdata = 0xb493ca48, stringdata = 0xb4c738b4,
data = 0xb4c73a7c, static_metacall = 0xb49e5395 <QGuiApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>,
relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0xb4d112d8, stringdata = 0xb521013c,
data = 0xb5210418, static_metacall = 0xb4e4ae3d <QApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>,
relatedMetaObjects = 0x0, extradata = 0x0}}}
arguments = {<QList<QString>> = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}},
d = 0x3}, d = 0x3}}, <No data fields>}
window = <optimized out>
fullScreen = <optimized out>
And output from X11:
Backtrace:
Segmentation fault at address 0x68
Caught signal 11 (Segmentation fault). Server aborting
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
Please also check the log file at "/var/log/Xorg.0.log" for additional information.
--
You received this bug notification because you are a member of TI OMAP
Developers, which is subscribed to ubuntu-omap4-extras-graphics.
https://bugs.launchpad.net/bugs/1015292
Title:
Snowshoe fails with QT5 with a segmentation fault while starting the
application
Status in Ubuntu OMAP4 graphics addons:
New
Status in “pvr-omap4” package in Ubuntu:
Confirmed
Bug description:
While testing Qt 5 support on Ubuntu, and validating the support for
OpenGL ES2.0 with Pandaboard, I couldn't start Snowshoe (Qt 5 - webkit
based browser) as it gives a segmentation fault and also breaks the
X11 server (with the pvr driver).
After a quick check with Snowball (Mali 400), it worked properly and
as expected, so this could probably be related with the current SGX
driver available for Pandaboard.
How to reproduce the issue:
1) Enable https://launchpad.net/~canonical-qt5-edgers/+archive/qt5-daily
2) Install 'snowshoe-mobile' package
3) Run snowshoe: $ PATH=/opt/qt5/bin:$PATH; snowshoe
This is with Ubuntu 12.04 with pvr-omap4 1.7.10.0.1.21-0ubuntu1 (from
archive) and also 1.7.15.0.1.57-1 from TI's PPA.
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References
