GUI hangs during sync #8984

issue laanwj opened this issue on October 20, 2016

laanwj commented at 4:23 PM on October 20, 2016: member

I suspect one of the recent changes added a lock that blocks the GUI thread waiting for some information. Traceback:

[#0](/bitcoin-bitcoin/0/)  __lll_lock_wait () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:135
[#1](/bitcoin-bitcoin/1/)  0x00007fe28be3be82 in __GI___pthread_mutex_lock (mutex=0x56115c542220 <cs_main>) at ../nptl/pthread_mutex_lock.c:115
[#2](/bitcoin-bitcoin/2/)  0x000056115ba3d07f in boost::recursive_mutex::lock (this=<optimized out>) at /usr/include/boost/thread/pthread/recursive_mutex.hpp:113
[#3](/bitcoin-bitcoin/3/)  AnnotatedMixin<boost::recursive_mutex>::lock (this=<optimized out>) at /home/orion/projects/bitcoin/bitcoin/src/sync.h:60
[#4](/bitcoin-bitcoin/4/)  boost::unique_lock<CCriticalSection>::lock (this=0x7ffcedb5c5d8) at /usr/include/boost/thread/lock_types.hpp:346
[#5](/bitcoin-bitcoin/5/)  0x000056115ba3b5ce in CMutexLock<CCriticalSection>::Enter (this=0x56115c542220 <cs_main>, nLine=75, pszName=<optimized out>, pszFile=<optimized out>)
    at /home/orion/projects/bitcoin/bitcoin/src/sync.h:125
[#6](/bitcoin-bitcoin/6/)  CMutexLock<CCriticalSection>::CMutexLock (this=0x56115c542220 <cs_main>, nLine=75, fTry=<error reading variable: access outside bounds of object referenced via synthetic pointer>, mutexIn=..., 
    pszName=<optimized out>, pszFile=<optimized out>) at /home/orion/projects/bitcoin/bitcoin/src/sync.h:146
[#7](/bitcoin-bitcoin/7/)  ClientModel::getHeaderTipHeight (this=<optimized out>) at /home/orion/projects/bitcoin/bitcoin/src/qt/clientmodel.cpp:75
[#8](/bitcoin-bitcoin/8/)  0x000056115ba2de74 in BitcoinGUI::setNumBlocks (this=0x56115d3d68c0, count=434832, blockDate=..., nVerificationProgress=0.99899780751543388, header=true)
    at /home/orion/projects/bitcoin/bitcoin/src/qt/bitcoingui.cpp:722
[#9](/bitcoin-bitcoin/9/)  0x000056115babf86d in BitcoinGUI::qt_static_metacall (_o=_o@entry=0x56115d3d68c0, _c=<optimized out>, _id=<optimized out>, _a=_a@entry=0x7ffcedb5c860) at qt/moc_bitcoingui.cpp:206
[#10](/bitcoin-bitcoin/10/) 0x00007fe28c82dfca in QMetaObject::activate (sender=0x56115d6e3bc0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3713
[#11](/bitcoin-bitcoin/11/) 0x000056115bac0a46 in ClientModel::numBlocksChanged (_t1=<optimized out>, this=<optimized out>, _t2=..., _t3=<optimized out>, _t4=<optimized out>) at qt/moc_clientmodel.cpp:231
[#12](/bitcoin-bitcoin/12/) ClientModel::qt_static_metacall (_o=0x56115c542220 <cs_main>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at qt/moc_clientmodel.cpp:124
[#13](/bitcoin-bitcoin/13/) 0x00007fe28c82eea1 in QObject::event (this=0x56115d6e3bc0, e=<optimized out>) at kernel/qobject.cpp:1239
[#14](/bitcoin-bitcoin/14/) 0x00007fe28d17005c in QApplicationPrivate::notify_helper (this=this@entry=0x56115cf9ad60, receiver=receiver@entry=0x56115d6e3bc0, e=e@entry=0x7fe202a51310) at kernel/qapplication.cpp:3716
[#15](/bitcoin-bitcoin/15/) 0x00007fe28d175516 in QApplication::notify (this=0x7ffcedb5cea0, receiver=0x56115d6e3bc0, e=0x7fe202a51310) at kernel/qapplication.cpp:3499
[#16](/bitcoin-bitcoin/16/) 0x00007fe28c7ff62b in QCoreApplication::notifyInternal (this=0x7ffcedb5cea0, receiver=0x56115d6e3bc0, event=event@entry=0x7fe202a51310) at kernel/qcoreapplication.cpp:965
[#17](/bitcoin-bitcoin/17/) 0x00007fe28c801a26 in QCoreApplication::sendEvent (event=0x7fe202a51310, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
[#18](/bitcoin-bitcoin/18/) QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x56115cf9e6e0) at kernel/qcoreapplication.cpp:1593
[#19](/bitcoin-bitcoin/19/) 0x00007fe28c801f08 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1451
[#20](/bitcoin-bitcoin/20/) 0x00007fe28c855673 in postEventSourceDispatch (s=0x56115d07e930) at kernel/qeventdispatcher_glib.cpp:271
[#21](/bitcoin-bitcoin/21/) 0x00007fe28957a1a7 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
[#22](/bitcoin-bitcoin/22/) 0x00007fe2780016f0 in ?? ()
[#23](/bitcoin-bitcoin/23/) 0x0000000000000000 in ?? ()

laanwj added the label GUI on Oct 20, 2016
laanwj commented at 4:27 PM on October 20, 2016: member

Looks like this was introduced in #8371 (Add out-of-sync modal info layer) @jonasschnelli Related: [qt] sync-overlay: Don't block during reindex #8821
jonasschnelli commented at 4:27 PM on October 20, 2016: contributor

Yes. I guess it's modalOverlay->setKnownBestHeight(clientModel->getHeaderTipHeight(), QDateTime::fromTime_t(clientModel->getHeaderTipTime())); (working on a fix).
jonasschnelli closed this on Oct 21, 2016
DrahtBot locked this on Sep 8, 2021

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laanwj

jonasschnelli

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#1 JSON-RPC support for mobile devices ("ultra-lightweight" clients)#2 Long-term, safe, store-of-value #3 Encrypt wallet #4 Export/Import wallet in a human readable, future-proof format #5 Make the version number the protocol version and not the client version #6 Treat wallet as a generic keystore #7 Block-header-only, faster startup client #8 RPC command to sign text with wallet private key #9 Fix for GUI on Macs and latest wxWidgets #10 Add address to listtransactions output #11 Nolisten patch #12 Monitor transactions and/or blocks #13 Messages with or about transactions #14 bitcoin: URI and/or bitcoin-request MIME type for click-to-pay #15 Option to specify external IP address #16 Mac UI issues #17 listaccounts method #18 Error when trying to send very precise amount #19 bitcoin(d) --help should output version number #20 JSON-RPC callback #21 Add time to category:move transactions #22 Update the list of hard-coded node IP addresses #23 CORS support #8985 Use pindexBestHeader instead of setBlockIndexCandidates for NotifyHeaderTip()