Application: rekonq (1.1)
KDE Platform Version: 4.9.1
Qt Version: 4.8.2
Operating System: Linux 3.5.4-1.fc17.x86_64 x86_64
Distribution: "Fedora release 17 (Beefy Miracle)"

-- Information about the crash:
- What I was doing when the application crashed:
in webkit settings I unchecked WebGL and applied, them rechecked WebGL and applied. then attempted to load a webGL page, rekonq crashes.
next time I visit the page i get a message that my browser doesn't support webGL. unchecking and re checking webGL and refreshing the page results in a crash again. suspect WebGL support is not yet stable, just trying to help with bug reports.

The crash can be reproduced every time.

-- Backtrace:
Application: rekonq (rekonq), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
82	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7ff839662880 (LWP 21720))]

Thread 4 (Thread 0x7ff82d630700 (LWP 21721)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:166
#1  0x0000003907d84ac7 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x39080919a0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x0000003907d84af9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x0000003404407d14 in start_thread (arg=0x7ff82d630700) at pthread_create.c:309
#4  0x00000034040f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 3 (Thread 0x7ff82cd2f700 (LWP 21722)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:166
#1  0x0000003900e1677d in WTF::TCMalloc_PageHeap::scavengerThread (this=0x3901800980) at wtf/FastMalloc.cpp:2495
#2  0x0000003900e16889 in WTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at wtf/FastMalloc.cpp:1618
#3  0x0000003404407d14 in start_thread (arg=0x7ff82cd2f700) at pthread_create.c:309
#4  0x00000034040f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 2 (Thread 0x7ff82c42e700 (LWP 21723)):
#0  0x00000034040e8bcf in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x0000003406c47964 in g_main_context_poll (n_fds=1, fds=0x7ff8240029c0, timeout=2353, context=0x7ff8240009a0, priority=<optimized out>) at gmain.c:3440
#2  g_main_context_iterate (context=context@entry=0x7ff8240009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3141
#3  0x0000003406c47a84 in g_main_context_iteration (context=0x7ff8240009a0, may_block=1) at gmain.c:3207
#4  0x00000038fb1a4506 in QEventDispatcherGlib::processEvents (this=0x7ff8240008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00000038fb17513f in QEventLoop::processEvents (this=this@entry=0x7ff82c42dd20, flags=...) at kernel/qeventloop.cpp:149
#6  0x00000038fb1753c8 in QEventLoop::exec (this=0x7ff82c42dd20, flags=...) at kernel/qeventloop.cpp:204
#7  0x00000038fb078650 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#8  0x00000038fb07b5eb in QThreadPrivate::start (arg=0xca6250) at thread/qthread_unix.cpp:307
#9  0x0000003404407d14 in start_thread (arg=0x7ff82c42e700) at pthread_create.c:309
#10 0x00000034040f167d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

Thread 1 (Thread 0x7ff839662880 (LWP 21720)):
[KCrash Handler]
#6  testAndSet (n=0, this=0x18) at wtf/Bitmap.h:85
#7  testAndSetMarked (p=0x0, this=0x0) at heap/MarkedBlock.h:204
#8  testAndSetMarked (cell=0x0) at heap/MarkedSpace.h:133
#9  testAndSetMarked (cell=0x0) at heap/Heap.h:153
#10 internalAppend (cell=0x0, this=0x7ff82c453bc8) at runtime/Structure.h:300
#11 append<JSC::JSGlobalObject> (slot=0x7ff8293f8908, this=0x7ff82c453bc8) at heap/MarkStack.h:215
#12 JSC::CodeBlock::visitAggregate (this=0x7ff8293f8900, visitor=...) at bytecode/CodeBlock.cpp:1462
#13 0x0000003900e61cee in JSC::FunctionExecutable::visitChildren (this=0x7ff8291f9c50, visitor=...) at runtime/Executable.cpp:354
#14 0x0000003900e3c1c4 in visitChildren (cell=0x7ff8291f9c50, this=0x7ff82c453bc8) at heap/MarkStack.cpp:82
#15 JSC::MarkStack::drain (this=0x7ff82c453bc8) at heap/MarkStack.cpp:128
#16 0x0000003900e394ba in JSC::Heap::markRoots (this=this@entry=0x7ff82c453868) at heap/Heap.cpp:243
#17 0x0000003900e39800 in reset (sweepToggle=JSC::Heap::DoSweep, this=0x7ff82c453868) at heap/Heap.cpp:397
#18 collectAllGarbage (this=0x7ff82c453868) at heap/Heap.cpp:389
#19 JSC::Heap::reportExtraMemoryCostSlowCase (this=0x7ff82c453868, cost=128008) at heap/Heap.cpp:105
#20 0x0000003900e707e8 in reportExtraMemoryCost (cost=128008, this=<optimized out>) at heap/Heap.h:169
#21 JSC::JSArray::JSArray (this=0x7ff829cfa310, globalData=..., structure=<optimized out>, list=...) at runtime/JSArray.cpp:231
#22 0x0000003900e4aceb in constructArray (values=..., globalObject=<optimized out>, exec=<optimized out>) at runtime/JSGlobalObject.h:440
#23 constructArray (values=..., exec=<optimized out>) at runtime/JSGlobalObject.h:445
#24 JSC::cti_op_new_array (args=<optimized out>) at jit/JITStubs.cpp:2270
#25 0x00007ff7e42826a0 in ?? ()
#26 0x0000000000000000 in ?? ()

Possible duplicates by query: bug 305032, bug 300372, bug 295904, bug 287044.

Reported using DrKonqi