Bug 265017

Application: nepomukservicestub (0.2)
KDE Platform Version: 4.6.00 (4.6.0)
Qt Version: 4.7.0
Operating System: Linux 2.6.32-28-generic x86_64
Distribution: Ubuntu 10.10

-- Information about the crash:
- What I was doing when the application crashed:
Segfault when I open a new folder in Dolphin. Have seen it just once before. But when it has happend once, it seems to happen every time I open a new folder untill restart of KDE.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Nepomuk-Dienst (nepomukservicestub), signal: Aborted
__lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
	in ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
[Current thread is 1 (Thread 0x7f2fb6353760 (LWP 7238))]

Thread 3 (Thread 0x7f2fa52d1700 (LWP 7242)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f2fb392c1dc in _L_lock_12347 () from /lib/libc.so.6
#2  0x00007f2fb392ac78 in __libc_free (mem=0x7f2fb3c2be40) at malloc.c:3736
#3  0x00007f2fb5dabdfc in QString::free (d=0x9d2540) at tools/qstring.cpp:1151
#4  0x00007f2fac5e408d in ~QString (this=0x89c0c8, sparqlFlags=<value optimized out>) at /usr/include/qt4/QtCore/qstring.h:882
#5  Nepomuk::Query::Query::toSparqlQuery (this=0x89c0c8, sparqlFlags=<value optimized out>) at ../../../nepomuk/query/query.cpp:479
#6  0x00007f2fa53027fb in Nepomuk::Query::Folder::sparqlQuery (this=<value optimized out>) at ../../../../nepomuk/services/queryservice/folder.cpp:122
#7  0x00007f2fa5305a4e in Nepomuk::Query::SearchRunnable::run (this=0x9d78e0) at ../../../../nepomuk/services/queryservice/searchrunnable.cpp:81
#8  0x00007f2fb5d5bd02 in QThreadPoolThread::run (this=0x9e7290) at concurrent/qthreadpool.cpp:106
#9  0x00007f2fb5d6627e in QThreadPrivate::start (arg=0x9e7290) at thread/qthread_unix.cpp:266
#10 0x00007f2fb3697971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#11 0x00007f2fb399392d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f2fa4ad0700 (LWP 7243)):
[KCrash Handler]
#6  0x00007f2fb38e0ba5 in raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#7  0x00007f2fb38e46b0 in abort () at abort.c:92
#8  0x00007f2fb391a43b in __libc_message (do_abort=<value optimized out>, fmt=<value optimized out>) at ../sysdeps/unix/sysv/linux/libc_fatal.c:189
#9  0x00007f2fb39244b6 in malloc_printerr (action=3, str=0x7f2fb39f8250 "malloc(): memory corruption (fast)", ptr=<value optimized out>) at malloc.c:6283
#10 0x00007f2fb3928781 in _int_malloc (av=0x7f2fb3c2be40, bytes=42) at malloc.c:4308
#11 0x00007f2fb392938e in __libc_malloc (bytes=42) at malloc.c:3660
#12 0x00007f2fb5d6911d in QByteArray::resize (this=0x7f2fa4acef10, size=10) at tools/qbytearray.cpp:1379
#13 0x00007f2fb5dab707 in toLatin1_helper (data=0x9e9eea, length=10) at tools/qstring.cpp:3491
#14 0x00007f2fb5dab8b3 in QString::toLatin1 (this=<value optimized out>) at tools/qstring.cpp:3584
#15 0x00007f2fb5e0cd66 in QUrl::toAce (domain=<value optimized out>) at io/qurl.cpp:5848
#16 0x00007f2fb5e1499e in QUrlPrivate::toEncoded (this=0x9e9cd0, options=) at io/qurl.cpp:3935
#17 0x00007f2fb5e14b1d in QUrl::toEncoded (this=<value optimized out>, options=<value optimized out>) at io/qurl.cpp:5655
#18 0x00007f2fb0a27fb9 in Soprano::Node::resourceToN3(QUrl const&) () from /usr/lib/libsoprano.so.4
#19 0x00007f2fac5de1fd in Nepomuk::Query::ResourceTypeTermPrivate::toSparqlGraphPattern (this=<value optimized out>, resName=<value optimized out>, qbd=0x7f2fa4acf310) at ../../../nepomuk/query/resourcetypeterm.cpp:50
#20 0x00007f2fac5d579d in Nepomuk::Query::AndTermPrivate::toSparqlGraphPattern (this=<value optimized out>, resourceVarName=..., qbd=0x7f2fa4acf310) at ../../../nepomuk/query/andterm.cpp:34
#21 0x00007f2fac5e2f05 in Nepomuk::Query::Query::toSparqlQuery (this=0x986eb8, sparqlFlags=<value optimized out>) at ../../../nepomuk/query/query.cpp:479
#22 0x00007f2fa53027fb in Nepomuk::Query::Folder::sparqlQuery (this=<value optimized out>) at ../../../../nepomuk/services/queryservice/folder.cpp:122
#23 0x00007f2fa5305a4e in Nepomuk::Query::SearchRunnable::run (this=0x9d2ba0) at ../../../../nepomuk/services/queryservice/searchrunnable.cpp:81
#24 0x00007f2fb5d5bd02 in QThreadPoolThread::run (this=0x9d3b30) at concurrent/qthreadpool.cpp:106
#25 0x00007f2fb5d6627e in QThreadPrivate::start (arg=0x9d3b30) at thread/qthread_unix.cpp:266
#26 0x00007f2fb3697971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#27 0x00007f2fb399392d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#28 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f2fb6353760 (LWP 7238)):
#0  __lll_lock_wait_private () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:97
#1  0x00007f2fb392c1dc in _L_lock_12347 () from /lib/libc.so.6
#2  0x00007f2fb392ac78 in __libc_free (mem=0x7f2fb3c2be40) at malloc.c:3736
#3  0x00007f2fb5e86601 in socketNotifierSourceCheck (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:92
#4  0x00007f2fb2bc866a in g_main_context_check () from /lib/libglib-2.0.so.0
#5  0x00007f2fb2bc9023 in ?? () from /lib/libglib-2.0.so.0
#6  0x00007f2fb2bc945c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#7  0x00007f2fb5e86193 in QEventDispatcherGlib::processEvents (this=0x819f90, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:415
#8  0x00007f2fb41a0a4e in QGuiEventDispatcherGlib::processEvents (this=0x7f2fb3c2be40, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#9  0x00007f2fb5e58a02 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#10 0x00007f2fb5e58dec in QEventLoop::exec (this=0x7fff253f6ba0, flags=) at kernel/qeventloop.cpp:201
#11 0x00007f2fb5e5cebb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#12 0x0000000000403b5d in main (argc=<value optimized out>, argv=<value optimized out>) at ../../../nepomuk/servicestub/main.cpp:165

This bug may be a duplicate of or related to bug 264624.

Possible duplicates by query: bug 264887, bug 264624, bug 258629, bug 257491, bug 253841.

Reported using DrKonqi