After a few minutes of running KTorrent, my torrents become stalled, and all peers on the torrents show up as choked. Only a restart of KTorrent fixes it, and there are no significant log messages at all.

When this happens, and I quit KTorrent, it crashes with this error:

Code: Select all

Application: KTorrent (ktorrent), signal SIGABRT
[Current thread is 0 (LWP 9912)]

Thread 2 (Thread 0xb417ab90 (LWP 10081)):
#0  0xb7f84430 in __kernel_vsyscall ()
#1  0xb6637a77 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0xb7e8cb43 in net::DownloadThread::waitForSocketReady (this=0x9af2498, timeout=200) at /home/adam/sources/ktorrent/libbtcore/net/downloadthread.cpp:183
#3  0xb7e8cc39 in net::DownloadThread::update (this=0x9af2498) at /home/adam/sources/ktorrent/libbtcore/net/downloadthread.cpp:53
#4  0xb7e8d738 in net::NetworkThread::run (this=0x9af2498) at /home/adam/sources/ktorrent/libbtcore/net/networkthread.cpp:48
#5  0xb715474e in ?? () from /usr/lib/libQtCore.so.4
#6  0xb5d2b4ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb66423fe in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5861700 (LWP 9912)):
[KCrash Handler]
#6  0xb7f84430 in __kernel_vsyscall ()
#7  0xb65896a0 in raise () from /lib/tls/i686/cmov/libc.so.6
#8  0xb658b068 in abort () from /lib/tls/i686/cmov/libc.so.6
#9  0xb65c71ed in ?? () from /lib/tls/i686/cmov/libc.so.6
#10 0xb65cdfa9 in ?? () from /lib/tls/i686/cmov/libc.so.6
#11 0xb65cfb2d in ?? () from /lib/tls/i686/cmov/libc.so.6
#12 0xb65d1965 in malloc () from /lib/tls/i686/cmov/libc.so.6
#13 0xb714efcd in qMalloc () from /usr/lib/libQtCore.so.4
#14 0xb7157326 in QByteArray::QByteArray () from /usr/lib/libQtCore.so.4
#15 0xb714cba9 in qt_error_string () from /usr/lib/libQtCore.so.4
#16 0xb7153b5f in ?? () from /usr/lib/libQtCore.so.4
#17 0xb7153cdb in ?? () from /usr/lib/libQtCore.so.4
#18 0xb714f41a in QMutex::lock () from /usr/lib/libQtCore.so.4
#19 0xb7e7e7c3 in bt::Log::lock (this=0xb7f5d538) at /home/adam/sources/ktorrent/libbtcore/util/log.cpp:263
#20 0xb7e7e804 in bt::Out (arg=19) at /home/adam/sources/ktorrent/libbtcore/util/log.cpp:271
#21 0xb7e7f0cc in QtMessageOutput (type=QtDebugMsg, msg=0xbf89e844 "QThread: Destroyed while thread is still running") at /home/adam/sources/ktorrent/libbtcore/util/log.cpp:298
#22 0xb714c7a5 in qt_message_output () from /usr/lib/libQtCore.so.4
#23 0xb714ca72 in qWarning () from /usr/lib/libQtCore.so.4
#24 0xb7151c46 in QThread::~QThread () from /usr/lib/libQtCore.so.4
#25 0xb7e8ddb3 in ~NetworkThread (this=0x9af2498) at /home/adam/sources/ktorrent/libbtcore/net/networkthread.cpp:41
#26 0xb7e8c967 in ~DownloadThread (this=0x9af2498) at /home/adam/sources/ktorrent/libbtcore/net/downloadthread.cpp:49
#27 0xb7e8b6cd in ~SocketMonitor (this=0xb7f6156c) at /home/adam/sources/ktorrent/libbtcore/net/socketmonitor.cpp:69
#28 0xb658cf21 in __cxa_finalize () from /lib/tls/i686/cmov/libc.so.6
#29 0xb7e73b14 in __do_global_dtors_aux () from /usr/lib/libbtcore.so.9
#30 0xb7f28260 in _fini () from /usr/lib/libbtcore.so.9
#31 0xb7f93a43 in ?? () from /lib/ld-linux.so.2
#32 0xb658cb89 in exit () from /lib/tls/i686/cmov/libc.so.6
#33 0xb657477d in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#34 0x08062661 in _start () at ../sysdeps/i386/elf/start.S:119

This is an svn build from yesterday; the problem has been occuring for a few days.

Do you know what the abort message was ?

I don't know what the abort message was. Here is another crash.

Code: Select all

Application: KTorrent (ktorrent), signal SIGSEGV
[Current thread is 0 (LWP 21259)]

Thread 2 (Thread 0xb4302b90 (LWP 21598)):
#0  0xb80c5430 in __kernel_vsyscall ()
#1  0xb67bba77 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0xb7fcebd3 in net::DownloadThread::waitForSocketReady (this=0x942d3e0, timeout=50) at /home/adam/sources/ktorrent/libbtcore/net/downloadthread.cpp:183
#3  0xb7fcecc9 in net::DownloadThread::update (this=0x942d3e0) at /home/adam/sources/ktorrent/libbtcore/net/downloadthread.cpp:53
#4  0xb7fcf7c8 in net::NetworkThread::run (this=0x942d3e0) at /home/adam/sources/ktorrent/libbtcore/net/networkthread.cpp:48
#5  0xb72d874e in ?? () from /usr/lib/libQtCore.so.4
#6  0xb5eb24ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb67c63fe in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb59edad0 (LWP 21259)):
[KCrash Handler]
#6  0xb2f57381 in kt::DownloadedChunkBar::getBitSet (this=0x9afc748) at /home/adam/sources/ktorrent/plugins/infowidget/downloadedchunkbar.cpp:44
#7  0xb2f574c7 in kt::DownloadedChunkBar::drawBarContents (this=0x9afc748, p=0xbfae1238) at /home/adam/sources/ktorrent/plugins/infowidget/downloadedchunkbar.cpp:91
#8  0xb2f57a28 in kt::DownloadedChunkBar::setTC (this=0x9afc748, tc=0x94a8e10) at /home/adam/sources/ktorrent/plugins/infowidget/downloadedchunkbar.cpp:57
#9  0xb2f58dfb in kt::StatusTab::changeTC (this=0x9af0650, tc=0x94a8e10) at /home/adam/sources/ktorrent/plugins/infowidget/statustab.cpp:88
#10 0xb2f5396d in kt::InfoWidgetPlugin::currentTorrentChanged (this=0x9af0608, tc=0x94a8e10) at /home/adam/sources/ktorrent/plugins/infowidget/infowidgetplugin.cpp:160
#11 0xb7f43996 in kt::GUIInterface::notifyViewListeners (this=0x9567b78, tc=0x94a8e10) at /home/adam/sources/ktorrent/libktcore/interfaces/guiinterface.cpp:38
#12 0x08077061 in kt::GUI::currentTabPageChanged (this=0x9567b30, page=0x9be2798) at /home/adam/sources/ktorrent/ktorrent/gui.cpp:675
#13 0x080d0e16 in ideal::MainWindow::qt_metacall (this=0x9567b30, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbfae14cc) at /home/adam/sources/ktorrent/build/ideal/mainwindow.moc:65
#14 0x08078f7f in kt::GUI::qt_metacall (this=0x9567b30, _c=QMetaObject::InvokeMetaMethod, _id=46, _a=0xbfae14cc) at /home/adam/sources/ktorrent/build/ktorrent/gui.moc:109
#15 0xb73ddc10 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#16 0xb73de992 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#17 0xb6ec0543 in QTabWidget::currentChanged () from /usr/lib/libQtGui.so.4
#18 0xb6ec23a4 in ?? () from /usr/lib/libQtGui.so.4
#19 0xb6ec2557 in QTabWidget::qt_metacall () from /usr/lib/libQtGui.so.4
#20 0xb7bad79a in KTabWidget::qt_metacall () from /usr/lib/libkdeui.so.5
#21 0xb73ddc10 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#22 0xb73de992 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#23 0xb6eb9123 in QTabBar::currentChanged () from /usr/lib/libQtGui.so.4
#24 0xb6ebddda in QTabBar::setCurrentIndex () from /usr/lib/libQtGui.so.4
#25 0xb6ebe14d in QTabBar::mousePressEvent () from /usr/lib/libQtGui.so.4
#26 0xb7bab0dd in KTabBar::mousePressEvent () from /usr/lib/libkdeui.so.5
#27 0xb6b11939 in QWidget::event () from /usr/lib/libQtGui.so.4
#28 0xb6ebe1e8 in QTabBar::event () from /usr/lib/libQtGui.so.4
#29 0xb6ab987c in QApplicationPrivate::notify_helper () from /usr/lib/libQtGui.so.4
#30 0xb6ac20b1 in QApplication::notify () from /usr/lib/libQtGui.so.4
#31 0xb7aa300d in KApplication::notify () from /usr/lib/libkdeui.so.5
#32 0xb73c8ff1 in QCoreApplication::notifyInternal () from /usr/lib/libQtCore.so.4
#33 0xb6ac133e in QApplicationPrivate::sendMouseEvent () from /usr/lib/libQtGui.so.4
#34 0xb6b2b676 in ?? () from /usr/lib/libQtGui.so.4
#35 0xb6b2aa05 in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#36 0xb6b547ea in ?? () from /usr/lib/libQtGui.so.4
#37 0xb5df6bf8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#38 0xb5dfa2a3 in ?? () from /usr/lib/libglib-2.0.so.0
#39 0xb5dfa461 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#40 0xb73f3628 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#41 0xb6b53ee5 in ?? () from /usr/lib/libQtGui.so.4
#42 0xb73c76ba in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#43 0xb73c787a in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#44 0xb73c9f35 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#45 0xb6ab96f7 in QApplication::exec () from /usr/lib/libQtGui.so.4
#46 0x08065229 in main (argc=1, argv=0xbfae28c4) at /home/adam/sources/ktorrent/ktorrent/main.cpp:171

Had the first situation occur again, but the stack was corrupted so no valid backtrace. The last line in the log again was:

Fri Feb 6 11:27:04 2009: SynchronousWait

also, when I started KTorrent again, it repeated this line:

Resetted chunk (number)

in the log for many chunks on the torrent that was attempting to download.

And again. Same backtrace as in the first post. Ran ktorrent from the command line this time, here is the output:

Code: Select all

*** glibc detected *** ktorrent: corrupted double-linked list: 0x090f2dd0 ***                                                                                                     
======= Backtrace: =========                                                                                   
/lib/tls/i686/cmov/libc.so.6[0xb6607fa9]                                                                       
/lib/tls/i686/cmov/libc.so.6[0xb6609b2d]                                                                       
/lib/tls/i686/cmov/libc.so.6(__libc_malloc+0x95)[0xb660b965]                                                   
/usr/lib/libQtCore.so.4(_Z7qMallocj+0x1d)[0xb7188fcd]                                                         
/usr/lib/libQtCore.so.4(_ZN10QByteArrayC1Eic+0x36)[0xb7191326]                                                 
/usr/lib/libQtCore.so.4(_Z15qt_error_stringi+0x59)[0xb7186ba9]                                                 
/usr/lib/libQtCore.so.4[0xb718db5f]                                                                           
/usr/lib/libQtCore.so.4[0xb718dcdb]                                                                           
/usr/lib/libQtCore.so.4(_ZN6QMutex4lockEv+0xaa)[0xb718941a]                                                   
/usr/lib/libbtcore.so.9(_ZN2bt3Log4lockEv+0x23)[0xb7e768a3]                                                   
/usr/lib/libbtcore.so.9(_ZN2bt3OutEj+0x34)[0xb7e768e4]                                                         
/usr/lib/libbtcore.so.9[0xb7e771ac]                                                                           
/usr/lib/libQtCore.so.4(_Z17qt_message_output9QtMsgTypePKc+0x35)[0xb71867a5]                                   
/usr/lib/libQtCore.so.4(_Z8qWarningPKcz+0x62)[0xb7186a72]                                                     
/usr/lib/libQtCore.so.4(_ZN7QThreadD2Ev+0x86)[0xb718bc46]                                                     
/usr/lib/libbtcore.so.9[0xb7e85e93]                                                                           
/usr/lib/libbtcore.so.9[0xb7e84a47]                                                                           
/usr/lib/libbtcore.so.9(_ZN3net13SocketMonitorD1Ev+0x8d)[0xb7e837ad]                                           
/lib/tls/i686/cmov/libc.so.6(__cxa_finalize+0xc1)[0xb65c6f21]                                                 
/usr/lib/libbtcore.so.9[0xb7e6bbf4]                                                                           
/usr/lib/libbtcore.so.9[0xb7f20130]                                                                           
/lib/ld-linux.so.2[0xb7f8aa43]                                                                                 
/lib/tls/i686/cmov/libc.so.6(exit+0x89)[0xb65c6b89]                                                           
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xed)[0xb65ae77d]                                               
ktorrent[0x8062731]                                                                                           
======= Memory map: ========                                                                                   
08048000-08100000 r-xp 00000000 08:03 784083     /usr/bin/ktorrent                                             
08100000-08101000 r--p 000b7000 08:03 784083     /usr/bin/ktorrent                                             
08101000-08103000 rw-p 000b8000 08:03 784083     /usr/bin/ktorrent                                             
090eb000-09a31000 rw-p 090eb000 00:00 0          [heap]                                                       
b1c00000-b1cfe000 rw-p b1c00000 00:00 0                                                                       
b1cfe000-b1d00000 ---p b1cfe000 00:00 0                                                                       
b1de2000-b1df3000 r-xp 00000000 08:03 359409     /lib/libresolv-2.9.so                                         
b1df3000-b1df4000 r--p 00010000 08:03 359409     /lib/libresolv-2.9.so                                         
b1df4000-b1df5000 rw-p 00011000 08:03 359409     /lib/libresolv-2.9.so                                         
b1df5000-b1df7000 rw-p b1df5000 00:00 0                                                                       
b1df7000-b1df8000 ---p b1df7000 00:00 0                                                                       
b1df8000-b25f8000 rwxp b1df8000 00:00 0
b25f8000-b25f9000 ---p b25f8000 00:00 0
b25f9000-b2df9000 rwxp b25f9000 00:00 0
b2df9000-b2e3e000 r-xp 00000000 08:03 806968     /usr/lib/kde4/ktinfowidgetplugin.so
b2e3e000-b2e40000 r--p 00044000 08:03 806968     /usr/lib/kde4/ktinfowidgetplugin.so
b2e40000-b2e41000 rw-p 00046000 08:03 806968     /usr/lib/kde4/ktinfowidgetplugin.so
b2e41000-b2ee1000 r-xp 00000000 08:03 788390     /usr/lib/libsyndication.so.4.2.0
b2ee1000-b2ee3000 r--p 000a0000 08:03 788390     /usr/lib/libsyndication.so.4.2.0
b2ee3000-b2ee4000 rw-p 000a2000 08:03 788390     /usr/lib/libsyndication.so.4.2.0
b2ee4000-b2f1e000 r-xp 00000000 08:03 869490     /usr/lib/kde4/ktsyndicationplugin.so
b2f1e000-b2f20000 r--p 00039000 08:03 869490     /usr/lib/kde4/ktsyndicationplugin.so
b2f20000-b2f21000 rw-p 0003b000 08:03 869490     /usr/lib/kde4/ktsyndicationplugin.so
b2f21000-b2f2b000 r-xp 00000000 08:03 902319     /usr/lib/libgstpbutils-0.10.so.0.16.0
b2f2b000-b2f2c000 ---p 0000a000 08:03 902319     /usr/lib/libgstpbutils-0.10.so.0.16.0
b2f2c000-b2f2d000 r--p 0000a000 08:03 902319     /usr/lib/libgstpbutils-0.10.so.0.16.0
b2f2d000-b2f2e000 rw-p 0000b000 08:03 902319     /usr/lib/libgstpbutils-0.10.so.0.16.0
b2f45000-b2f4f000 r-xp 00000000 08:03 801156     /usr/lib/gstreamer-0.10/libgstdecodebin.so
b2f4f000-b2f50000 r--p 00009000 08:03 801156     /usr/lib/gstreamer-0.10/libgstdecodebin.so
b2f50000-b2f51000 rw-p 0000a000 08:03 801156     /usr/lib/gstreamer-0.10/libgstdecodebin.so
b2f51000-b2f7b000 r-xp 00000000 08:03 784731     /usr/lib/gstreamer-0.10/libgstcoreelements.so
b2f7b000-b2f7c000 r--p 0002a000 08:03 784731     /usr/lib/gstreamer-0.10/libgstcoreelements.so
b2f7c000-b2f7d000 rw-p 0002b000 08:03 784731     /usr/lib/gstreamer-0.10/libgstcoreelements.so
b2f7d000-b2fd2000 r-xp 00000000 08:03 783391     /usr/lib/liboil-0.3.so.0.3.0
b2fd2000-b2fd3000 r--p 00054000 08:03 783391     /usr/lib/liboil-0.3.so.0.3.0
b2fd3000-b2fea000 rw-p 00055000 08:03 783391     /usr/lib/liboil-0.3.so.0.3.0
b2fea000-b2fec000 rw-p b2fea000 00:00 0
b2fec000-b3010000 r-xp 00000000 08:03 786647     /usr/lib/libgstcontroller-0.10.so.0.19.0
b3010000-b3011000 r--p 00024000 08:03 786647     /usr/lib/libgstcontroller-0.10.so.0.19.0
b3011000-b3012000 rw-p 00025000 08:03 786647     /usr/lib/libgstcontroller-0.10.so.0.19.0
b3012000-b3017000 r-xp 00000000 08:03 327559     /lib/tls/i686/cmov/libnss_dns-2.9.so
b3017000-b3018000 r--p 00004000 08:03 327559     /lib/tls/i686/cmov/libnss_dns-2.9.so
b3018000-b3019000 rw-p 00005000 08:03 327559     /lib/tls/i686/cmov/libnss_dns-2.9.so
b3019000-b3026000 r-xp 00000000 08:03 801153     /usr/lib/gstreamer-0.10/libgstaudioresample.so

phantom042 wrote:Had the first situation occur again, but the stack was corrupted so no valid backtrace. The last line in the log again was:

Fri Feb 6 11:27:04 2009: SynchronousWait

also, when I started KTorrent again, it repeated this line:

Resetted chunk (number)

in the log for many chunks on the torrent that was attempting to download.

Those resetted messages were fixed yesterday (wasn't really a bug, just some useless resetting of deselected chunks at start up)

I can confirm this problem in latest SVN. While seeding i am being connected to all peers (even to those that are seeding) and they're displayed as choked. To fix this i need to restart KTorrent.

hash wrote:I can confirm this problem in latest SVN. While seeding i am being connected to all peers (even to those that are seeding) and they're displayed as choked. To fix this i need to restart KTorrent.

This is fixed in revision 923348

George wrote:This is fixed in revision 923348

Thanks!