KAnagram QML WebView crash
Jeremy Whiting
jpwhiting at kde.org
Sun Aug 24 00:45:31 UTC 2014
Ok, I rebuilt frameworks and such on a fresh debian jessie vm with
frameworks build from git and kanagram crashes here with this
backtrace I got from gdb:
Set qml file location
[New Thread 0xa6e99b40 (LWP 10760)]
Program received signal SIGSEGV, Segmentation fault.
0x00000000 in ?? ()
(gdb) bt
#0 0x00000000 in ?? ()
#1 0xb657b980 in TSymbolTableLevel::~TSymbolTableLevel() ()
at src/compiler/SymbolTable.cpp:174
#2 0xb653d0a1 in TCompiler::compile (this=0x9094f88, shaderStrings=0x0,
numStrings=<unknown type>, compileOptions=-1218551960)
at src/compiler/SymbolTable.h:270
#3 0xb657ad64 in ShCompile (
handle=<error reading variable: Unknown argument list address for
`handle'.>,
shaderStrings=<error reading variable: Unknown argument list
address for `shaderStrings'.>,
numStrings=<error reading variable: Unknown argument list address
for `numStrings'.>,
compileOptions=<error reading variable: Unknown argument list
address for `compileOptions'.>) at src/compiler/ShaderLang.cpp:200
#4 0xb587e4c2 in WebCore::ANGLEWebKitBridge::compileShaderSource(char
const*, WebCore::ANGLEShaderType, WTF::String&, WTF::String&,
WTF::Vector<WebCore::ANGLEShaderSymbol, 0u, WTF::CrashOnOverflow>&,
int) () at ../WTF/wtf/HashTable.h:690
#5 0xb588bc57 in
WebCore::Extensions3DOpenGLCommon::getTranslatedShaderSourceANGLE(unsigned
int) () at ../WTF/wtf/HashTable.h:690
#6 0xb58881d0 in WebCore::GraphicsContext3D::compileShader(unsigned int) ()
at ../WTF/wtf/HashTable.h:690
#7 0xb5895b42 in
WebCore::TextureMapperShaderProgram::TextureMapperShaderProgra---Type
<return> to continue, or q <return> to quit---
m(WTF::PassRefPtr<WebCore::GraphicsContext3D>, WTF::String const&,
WTF::String const&) () at ../WTF/wtf/HashTable.h:690
#8 0xb5895fff in
WebCore::TextureMapperShaderProgram::create(WTF::PassRefPtr<WebCore::GraphicsContext3D>,
unsigned int) () at ../WTF/wtf/HashTable.h:690
#9 0xb58938b1 in WebCore::TextureMapperGL::drawTexture(unsigned int,
int, WebCore::IntSize const&, WebCore::FloatRect const&,
WebCore::TransformationMatrix const&, float, unsigned int) () at
../WTF/wtf/HashTable.h:690
#10 0xb588f45a in
WebCore::TextureMapperGL::drawTexture(WebCore::BitmapTexture const&,
WebCore::FloatRect const&, WebCore::TransformationMatrix const&,
float, unsigned int) () at ../WTF/wtf/HashTable.h:690
#11 0xb56e7ab7 in
WebCore::TextureMapperTile::paint(WebCore::TextureMapper*,
WebCore::TransformationMatrix const&, float, unsigned int) ()
at ../WTF/wtf/Vector.h:1053
#12 0xb589b8d5 in
WebCore::CoordinatedBackingStore::paintTilesToTextureMapper(WTF::Vector<WebCore::TextureMapperTile*,
0u, WTF::CrashOnOverflow>&, WebCore::TextureMapper*,
WebCore::TransformationMatrix const&, float, WebCore::FloatRect
const&) () at ../WTF/wtf/HashTable.h:690
#13 0xb589c150 in
WebCore::CoordinatedBackingStore::paintToTextureMapper(WebCore::TextureMapper*,
WebCore::FloatRect const&, WebCore::TransformationMatrix const&,
float) [clone .part.62] () at ../WTF/wtf/HashTable.h:690
#14 0xb56e3994 in
WebCore::TextureMapperLayer::paintSelf(WebCore::TextureMapperPaintOptions
const&) () at platform/graphics/texmap/TextureMapper.h:90
#15 0xb56e6d94 in
WebCore::TextureMapperLayer::paintSelfAndChildren(WebCore::Tex---Type
<return> to continue, or q <return> to quit---
tureMapperPaintOptions const&) ()
at platform/graphics/texmap/TextureMapper.h:90
#16 0xb56e6efb in
WebCore::TextureMapperLayer::paintSelfAndChildrenWithReplica(WebCore::TextureMapperPaintOptions
const&) ()
at platform/graphics/texmap/TextureMapper.h:90
#17 0xb56e6a94 in
WebCore::TextureMapperLayer::paintRecursive(WebCore::TextureMapperPaintOptions
const&) () at platform/graphics/texmap/TextureMapper.h:90
#18 0xb56e6d1a in
WebCore::TextureMapperLayer::paintSelfAndChildren(WebCore::TextureMapperPaintOptions
const&) [clone .part.99] ()
at platform/graphics/texmap/TextureMapper.h:90
#19 0xb56e6efb in
WebCore::TextureMapperLayer::paintSelfAndChildrenWithReplica(WebCore::TextureMapperPaintOptions
const&) ()
at platform/graphics/texmap/TextureMapper.h:90
#20 0xb56e6a94 in
WebCore::TextureMapperLayer::paintRecursive(WebCore::TextureMapperPaintOptions
const&) () at platform/graphics/texmap/TextureMapper.h:90
#21 0xb56e6d1a in
WebCore::TextureMapperLayer::paintSelfAndChildren(WebCore::TextureMapperPaintOptions
const&) [clone .part.99] ()
at platform/graphics/texmap/TextureMapper.h:90
#22 0xb56e6efb in
WebCore::TextureMapperLayer::paintSelfAndChildrenWithReplica(WebCore::TextureMapperPaintOptions
const&) ()
at platform/graphics/texmap/TextureMapper.h:90
#23 0xb56e6a94 in
WebCore::TextureMapperLayer::paintRecursive(WebCore::TextureMapperPaintOptions
const&) () at platform/graphics/texmap/TextureMapper.h:90
---Type <return> to continue, or q <return> to quit---
#24 0xb56e6d1a in
WebCore::TextureMapperLayer::paintSelfAndChildren(WebCore::TextureMapperPaintOptions
const&) [clone .part.99] ()
at platform/graphics/texmap/TextureMapper.h:90
#25 0xb56e6efb in
WebCore::TextureMapperLayer::paintSelfAndChildrenWithReplica(WebCore::TextureMapperPaintOptions
const&) ()
at platform/graphics/texmap/TextureMapper.h:90
#26 0xb56e6a94 in
WebCore::TextureMapperLayer::paintRecursive(WebCore::TextureMapperPaintOptions
const&) () at platform/graphics/texmap/TextureMapper.h:90
#27 0xb56e6b83 in WebCore::TextureMapperLayer::paint() ()
at platform/graphics/texmap/TextureMapper.h:90
#28 0xb58a407a in
WebCore::CoordinatedGraphicsScene::paintToCurrentGLContext(WebCore::TransformationMatrix
const&, float, WebCore::FloatRect const&, unsigned int) () at
../WTF/wtf/HashTable.h:690
#29 0xb52e438d in
WebKit::ContentsSGNode::render(QSGRenderNode::RenderState const&) ()
at /usr/include/i386-linux-gnu/qt5/QtCore/qvector.h:508
#30 0xb7cb55bf in
QSGBatchRenderer::Renderer::renderRenderNode(QSGBatchRenderer::Batch*)
() from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#31 0xb7cb5b8a in QSGBatchRenderer::Renderer::renderBatches() ()
from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#32 0xb7cb6249 in QSGBatchRenderer::Renderer::render() ()
from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#33 0xb7cc2a5b in QSGRenderer::renderScene(QSGBindable const&) ()
from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
---Type <return> to continue, or q <return> to quit---
#34 0xb7cc30c7 in QSGRenderer::renderScene() ()
from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#35 0xb7cd32ec in QSGRenderContext::renderNextFrame(QSGRenderer*, unsigned int)
() from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#36 0xb7d133b7 in QQuickWindowPrivate::renderSceneGraph(QSize const&) ()
from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#37 0xb7cef4bb in ?? () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#38 0xb7cf0628 in ?? () from /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#39 0xb365d86a in QApplicationPrivate::notify_helper (this=0x808e380, receiver=
0x80d4848, e=0xbfffef40) at kernel/qapplication.cpp:3522
#40 0xb3662e1c in QApplication::notify (this=0xbffff1ec, receiver=0x80d4848,
e=0xbfffef40) at kernel/qapplication.cpp:3487
#41 0xb7946da7 in QCoreApplication::notifyInternal (this=0xbffff1ec,
receiver=0x80d4848, event=0xbfffef40) at kernel/qcoreapplication.cpp:935
#42 0xb799dcb8 in sendEvent (event=0xbfffef40, receiver=<optimized out>)
at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:237
#43 QTimerInfoList::activateTimers (this=0x80ad04c)
at kernel/qtimerinfo_unix.cpp:643
#44 0xb799e149 in timerSourceDispatch (source=0x80ad018)
at kernel/qeventdispatcher_glib.cpp:185
#45 0xb2289f64 in g_main_context_dispatch ()
from /lib/i386-linux-gnu/libglib-2.0.so.0
#46 0xb228a279 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#47 0xb228a346 in g_main_context_iteration ()
from /lib/i386-linux-gnu/libglib-2.0.so.0
#48 0xb799edc4 in QEventDispatcherGlib::processEvents (this=0x80ad238,
flags=...) at kernel/qeventdispatcher_glib.cpp:426
#49 0xaf8fe7e1 in QPAEventDispatcherGlib::processEvents (this=0x80ad238,
flags=...) at eventdispatchers/qeventdispatcher_glib.cpp:123
#50 0xb7944183 in QEventLoop::processEvents (this=0xbffff17c, flags=...)
at kernel/qeventloop.cpp:136
#51 0xb794459a in QEventLoop::exec (this=0xbffff17c, flags=...)
at kernel/qeventloop.cpp:212
#52 0xb794c26a in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#53 0xb3077f21 in QGuiApplication::exec () at kernel/qguiapplication.cpp:1450
#54 0xb365be04 in QApplication::exec () at kernel/qapplication.cpp:2767
#55 0x08066d79 in main (argc=1, argv=0xbffff3d4)
at /home/jeremy/devel/kde/frameworks/kde/kdeedu/kanagram/src/main.cpp:60
The only thing I'm doing in the qml is making the WebView visible and
after about one or two seconds I get this segfault. Anyone with
QtWebKit experience know what's going on here? do I need to change
some qml property to make it not crash ?
BR,
Jeremy
On Fri, Aug 22, 2014 at 4:11 PM, Jeremy Whiting <jpwhiting at kde.org> wrote:
> Sorry all, seems this is something wrong with my local setup. Though
> I've no clue what would cause these issues. If anyone has any ideas
> for me to try I'll try anything to get back to where I can work on
> fixing real issues rather than strange crashes that are only on my
> system :) I'll keep digging I guess.
>
> thanks,
> Jeremy
>
>
> On Fri, Aug 22, 2014 at 3:57 PM, Albert Astals Cid <aacid at kde.org> wrote:
>> El Divendres, 22 d'agost de 2014, a les 15:45:12, Jeremy Whiting va escriure:
>>> Hello all,
>>>
>>> I'm reaching out because I can't seem to find a solution myself.
>>>
>>> TLDR If you can get a backtrace from building and running
>>> scratch/whiting/testqmlapp which uses QtWebKit's QML WebView I'd very
>>> much appreciate it.
>>
>> "works" for me http://i.imgur.com/OVgSImV.png
>>
>> Cheers,
>> Albert
>>
>>
>>>
>>>
>>> KAnagram qt4 version from master (before frameworks branch was merged)
>>> has a qml WebView to show wikipedia data for the current word as a
>>> hint (obvious hint, but nevertheless). Now that master branch is kf5
>>> based I've disabled this feature temporarily because on my machine at
>>> least every time the WebView becomes visible KAnagram crashes. KCrash
>>> shows two lines of ?? so isn't helpful. gdb kanagram shows no ui
>>> strangely enough. At any rate I've simplified kanagram's code to a
>>> base/small set of sources that also crashes when the WebView is shown
>>> here, and I'd like to see if anyone knows why or can get me a
>>> backtrace that could help. Note I've built Qt5 myself twice to try to
>>> get a backtrace, but for some reason when building qt5 from git
>>> QtWebKit is built as a QtQuick 1 library (placed into qtbase/imports)
>>> rather than a QtQuick 2 library (placed into qtbase/qml) (If anyone
>>> can explain why this is the case I'd like to know that also...) so if
>>> you've built qt5 yourself you probably also wont be able to run this
>>> test app. If I can't solve this crash I'll simply disable this feature
>>> for the 14.12 release and look at it again once Qt 5.4 is released,
>>> which will have a Blink based WebEngine or something to try it with
>>> I'm told.
>>>
>>> thanks,
>>> Jeremy
>>> _______________________________________________
>>> kde-edu mailing list
>>> kde-edu at mail.kde.org
>>> https://mail.kde.org/mailman/listinfo/kde-edu
>>
>> _______________________________________________
>> Kde-frameworks-devel mailing list
>> Kde-frameworks-devel at kde.org
>> https://mail.kde.org/mailman/listinfo/kde-frameworks-devel
More information about the kde-edu
mailing list