[Bug 163171] crash in KIO scheduler searchIdleList

[auxsvr at yahoo.com]

http://bugs.kde.org/show_bug.cgi?id=163171





--- Comment #12 from auxsvr yahoo com  2008-10-19 22:06:58 ---
I was able to reproduce this 100% reliably when downloading a file. Here's the
output of valgrind:

==9572== Memcheck, a memory error detector.
==9572== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al.
==9572== Using LibVEX rev 1804, a library for dynamic binary translation.
==9572== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP.
==9572== Using valgrind-3.3.0, a dynamic binary instrumentation framework.
==9572== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al.
==9572== For more details, rerun with: -v
==9572== 
==9572== My PID = 9572, parent PID = 5004.  Prog and args are:
==9572==    kget
==9572==    --nofork
==9572== 
==9572== Invalid read of size 4
==9572==    at 0x4F607E6: Soprano::FilterModel::addStatement(Soprano::Statement
const&) (filtermodel.cpp:92)
==9572==    by 0x4F48208:
Soprano::Model::addStatements(QList<Soprano::Statement> const&) (model.cpp:135)
==9572==    by 0x5014D1C:
Nepomuk::ResourceFilterModel::addStatements(QList<Soprano::Statement> const&)
(resourcefiltermodel.cpp:245)
==9572==    by 0x500BED3: Nepomuk::ResourceData::store() (resourcedata.cpp:285)
==9572==    by 0x500C4BA: Nepomuk::ResourceData::setProperty(QUrl const&,
Nepomuk::Variant const&) (resourcedata.cpp:370)
==9572==    by 0x5027A81: Nepomuk::Resource::setProperty(QUrl const&,
Nepomuk::Variant const&) (resource.cpp:227)
==9572==    by 0x43C2CA1: NepomukHandler::saveFileProperties(Nepomuk::Resource
const&) (in /usr/lib/libkgetcore.so.4.1.0)
==9572==    by 0x43C2C37: NepomukHandler::saveFileProperties() (in
/usr/lib/libkgetcore.so.4.1.0)
==9572==    by 0x43B1331: Transfer::setStatus(Job::Status, QString const&,
QPixmap const&) (in /usr/lib/libkgetcore.so.4.1.0)
==9572==    by 0x43B24BE: Transfer::load(QDomElement const&) (in
/usr/lib/libkgetcore.so.4.1.0)
==9572==    by 0x43B2CA0: Transfer::Transfer(TransferGroup*, TransferFactory*,
Scheduler*, KUrl const&, KUrl const&, QDomElement const*) (in
/usr/lib/libkgetcore.so.4.1.0)
==9572==    by 0x76F095A: (within /usr/lib/kde4/kget_kiofactory.so)
==9572==  Address 0x694e878 is 0 bytes inside a block of size 24 free'd
==9572==    at 0x402371A: operator delete(void*) (in
/usr/lib/valgrind/x86-linux/vgpreload_memcheck.so)
==9572==    by 0x500F722: Nepomuk::MainModel::~MainModel()
(nepomukmainmodel.cpp:173)
==9572==    by 0x500E667: Nepomuk::ResourceManager::init()
(resourcemanager.cpp:88)
==9572==    by 0x500E75F: Nepomuk::ResourceManager::mainModel()
(resourcemanager.cpp:227)
==9572==    by 0x500EA8E: Nepomuk::ResourceManager::generateUniqueUri()
(resourcemanager.cpp:206)
==9572==    by 0x5014C2A:
Nepomuk::ResourceFilterModel::addStatements(QList<Soprano::Statement> const&)
(resourcefiltermodel.cpp:236)
==9572==    by 0x500BED3: Nepomuk::ResourceData::store() (resourcedata.cpp:285)
==9572==    by 0x500C4BA: Nepomuk::ResourceData::setProperty(QUrl const&,
Nepomuk::Variant const&) (resourcedata.cpp:370)
==9572==    by 0x5027A81: Nepomuk::Resource::setProperty(QUrl const&,
Nepomuk::Variant const&) (resource.cpp:227)
==9572==    by 0x43C2CA1: NepomukHandler::saveFileProperties(Nepomuk::Resource
const&) (in /usr/lib/libkgetcore.so.4.1.0)
==9572==    by 0x43C2C37: NepomukHandler::saveFileProperties() (in
/usr/lib/libkgetcore.so.4.1.0)
==9572==    by 0x43B1331: Transfer::setStatus(Job::Status, QString const&,
QPixmap const&) (in /usr/lib/libkgetcore.so.4.1.0)
==9572== 
==9572== Jump to the invalid address stated on the next line
==9572==    at 0x0: ???
==9572==    by 0x4F48208:
Soprano::Model::addStatements(QList<Soprano::Statement> const&) (model.cpp:135)
==9572==    by 0x5014D1C:
Nepomuk::ResourceFilterModel::addStatements(QList<Soprano::Statement> const&)
(resourcefiltermodel.cpp:245)
==9572==    by 0x500BED3: Nepomuk::ResourceData::store() (resourcedata.cpp:285)
==9572==    by 0x500C4BA: Nepomuk::ResourceData::setProperty(QUrl const&,
Nepomuk::Variant const&) (resourcedata.cpp:370)
==9572==    by 0x5027A81: Nepomuk::Resource::setProperty(QUrl const&,
Nepomuk::Variant const&) (resource.cpp:227)
==9572==    by 0x43C2CA1: NepomukHandler::saveFileProperties(Nepomuk::Resource
const&) (in /usr/lib/libkgetcore.so.4.1.0)
==9572==    by 0x43C2C37: NepomukHandler::saveFileProperties() (in
/usr/lib/libkgetcore.so.4.1.0)
==9572==    by 0x43B1331: Transfer::setStatus(Job::Status, QString const&,
QPixmap const&) (in /usr/lib/libkgetcore.so.4.1.0)
==9572==    by 0x43B24BE: Transfer::load(QDomElement const&) (in
/usr/lib/libkgetcore.so.4.1.0)
==9572==    by 0x43B2CA0: Transfer::Transfer(TransferGroup*, TransferFactory*,
Scheduler*, KUrl const&, KUrl const&, QDomElement const*) (in
/usr/lib/libkgetcore.so.4.1.0)
==9572==    by 0x76F095A: (within /usr/lib/kde4/kget_kiofactory.so)
==9572==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==9572== 
==9572== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 68 from 4)
==9572== malloc/free: in use at exit: 2,520,345 bytes in 35,620 blocks.
==9572== malloc/free: 186,546 allocs, 150,926 frees, 109,236,341 bytes
allocated.
==9572== For counts of detected errors, rerun with: -v
==9572== searching for pointers to 35,620 not-freed blocks.
==9572== checked 23,063,100 bytes.
==9572== 
==9572== LEAK SUMMARY:
==9572==    definitely lost: 9,589 bytes in 365 blocks.
==9572==      possibly lost: 25,039 bytes in 957 blocks.
==9572==    still reachable: 2,485,717 bytes in 34,298 blocks.
==9572==         suppressed: 0 bytes in 0 blocks.
==9572== Rerun with --leak-check=full to see details of leaked memory.


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