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  1. Qt
  2. QTBUG-69361

Concurrent crash in ICU

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Details

    • Bug
    • Resolution: Done
    • P2: Important
    • 5.11.2
    • 5.11.0
    • Core: Locales (i18n)
    • None
    • Linux/X11
    • 199c49517e184db09cbb5eff60e15d73096b330b

    Description

      With these env variables:

      LANGUAGE=es:en_US
LANG=es_ES.UTF-8

      I get a crash in ucol_close() (aka in ICU) when using 6 concurrent threads of QCollator to sort strings, and ICUs are supposed to be thread-safe.

      #0  0x0000000000000000 in ?? ()
#1  0x00007fffef341b8b in QCollatorPrivate::cleanup (this=0xcf5980) at tools/qcollator_icu.cpp:102
#2  QCollatorPrivate::init() () at tools/qcollator_icu.cpp:57
#3  0x00007fffef341dab in QCollator::compare (this=0xcd2a30, s1=0xcc7168, len1=6, s2=0xf8d298, len2=11) at tools/qcollator_icu.cpp:109
#4  0x00007ffff6b35c30 in KFileItemModel::sortRoleCompare (this=this@entry=0xcd2a00, a=a@entry=0x98f900, b=b@entry=0xbbd3d0, collator=...)
    at /g/5kde/kde/applications/dolphin/src/kitemviews/kfileitemmodel.cpp:1839
#5  0x00007ffff6b362a2 in KFileItemModel::lessThan (this=this@entry=0xcd2a00, a=0x98f900, b=0xbbd3d0, collator=...)
    at /g/5kde/kde/applications/dolphin/src/kitemviews/kfileitemmodel.cpp:1710
#6  0x00007ffff6b3c715 in KFileItemModel::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)>::operator() (__closure=0x7fffbd6b8c68,
    b=<optimized out>, a=<optimized out>) at /g/5kde/kde/applications/dolphin/src/kitemviews/kfileitemmodel.cpp:1720
#7  merge<QList<KFileItemModel::ItemData*>::iterator, KFileItemModel::sort(QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator) const::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> >(QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator, const KFileItemModel::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> &) (begin=...,
    pivot=..., end=..., lessThan=...) at /g/5kde/kde/applications/dolphin/src/kitemviews/private/kfileitemmodelsortalgorithm.h:115
#8  0x00007ffff6b3c7db in mergeSort<QList<KFileItemModel::ItemData*>::iterator, KFileItemModel::sort(QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator) const::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> >(QList<KFileItemModel::ItemData*>::iterator, const KFileItemModel::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> &, QList<KFileItemModel::ItemData*>::iterator) (end=..., lessThan=...,
    begin=...) at /usr/include/qt5/QtCore/qlist.h:239
#9  0x00007ffff6b3c7b4 in mergeSort<QList<KFileItemModel::ItemData*>::iterator, KFileItemModel::sort(QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator) const::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> >(QList<KFileItemModel::ItemData*>::iterator, const KFileItemModel::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> &, QList<KFileItemModel::ItemData*>::iterator) (end=..., lessThan=...,
    begin=...) at /usr/include/qt5/QtCore/qlist.h:239
#10 0x00007ffff6b3c796 in mergeSort<QList<KFileItemModel::ItemData*>::iterator, KFileItemModel::sort(QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator) const::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> >(QList<KFileItemModel::ItemData*>::iterator, const KFileItemModel::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> &, QList<KFileItemModel::ItemData*>::iterator) (end=..., lessThan=...,
    begin=...) at /usr/include/qt5/QtCore/qlist.h:239
#11 0x00007ffff6b3c796 in mergeSort<QList<KFileItemModel::ItemData*>::iterator, KFileItemModel::sort(QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator) const::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> >(QList<KFileItemModel::ItemData*>::iterator, const KFileItemModel::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> &, QList<KFileItemModel::ItemData*>::iterator) (end=..., lessThan=...,
    begin=...) at /usr/include/qt5/QtCore/qlist.h:239
#12 0x00007ffff6b3c796 in mergeSort<QList<KFileItemModel::ItemData*>::iterator, KFileItemModel::sort(QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator) const::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> >(QList<KFileItemModel::ItemData*>::iterator, const KFileItemModel::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> &, QList<KFileItemModel::ItemData*>::iterator) (end=..., lessThan=...,
    begin=...) at /usr/include/qt5/QtCore/qlist.h:239
#13 0x00007ffff6b3c796 in mergeSort<QList<KFileItemModel::ItemData*>::iterator, KFileItemModel::sort(QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator) const::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> >(QList<KFileItemModel::ItemData*>::iterator, const KFileItemModel::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> &, QList<KFileItemModel::ItemData*>::iterator) (end=..., lessThan=...,
    begin=...) at /usr/include/qt5/QtCore/qlist.h:239
#14 0x00007ffff6b3c796 in mergeSort<QList<KFileItemModel::ItemData*>::iterator, KFileItemModel::sort(QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator) const::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> >(QList<KFileItemModel::ItemData*>::iterator, const KFileItemModel::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> &, QList<KFileItemModel::ItemData*>::iterator) (end=..., lessThan=...,
    begin=...) at /usr/include/qt5/QtCore/qlist.h:239
#15 0x00007ffff6b3c796 in mergeSort<QList<KFileItemModel::ItemData*>::iterator, KFileItemModel::sort(QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator) const::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> >(QList<KFileItemModel::ItemData*>::iterator, const KFileItemModel::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> &, QList<KFileItemModel::ItemData*>::iterator) (end=..., lessThan=...,
    begin=...) at /usr/include/qt5/QtCore/qlist.h:239
#16 0x00007ffff6b3d738 in parallelMergeSort<QList<KFileItemModel::ItemData*>::iterator, KFileItemModel::sort(QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator) const::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)> >(QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator, KFileItemModel::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)>, int, int) (begin=..., end=...,
    lessThan=..., numberOfThreads=<optimized out>, parallelMergeSortingThreshold=<optimized out>) at /usr/include/qt5/QtCore/qlist.h:239
#17 0x00007ffff6b322fb in QtConcurrent::StoredFunctorCall5<void, void (*)(QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator, KFi---Type <return> leItemModel::sort(QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator) const::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)>, int, int), QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator, KFileItemModel::sort(QList<KFileItemModel::ItemData*>::iterator, QList<KFileItemModel::ItemData*>::iterator) const::<lambda(const KFileItemModel::ItemData*, const KFileItemModel::ItemData*)>, int, int>::runFunctor(void) (this=<optimized out>) at /usr/include/qt5/QtCore/qlist.h:239
#18 0x00007ffff6b40eaf in non-virtual thunk to QtConcurrent::RunFunctionTask<void>::run() () at /usr/include/qt5/QtCore/qfutureinterface.h:293
#19 0x00007fffef2b3181 in QThreadPoolThread::run() () at thread/qthreadpool.cpp:101
#20 0x00007fffef2ba93c in QThreadPrivate::start(void*) () at thread/qthread_unix.cpp:367
#21 0x00007fffeb226554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#22 0x00007ffff6f00fdf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

      More information in https://phabricator.kde.org/D13814

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            Eddy Edward Welbourne
            jtamate Jaime Torres
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