Bug 421593

Application: baloo_file (5.44.0)
 (Compiled from sources)
Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 5.3.0-51-generic x86_64
Distribution: Ubuntu 18.04.4 LTS

-- Information about the crash:
- What I was doing when the application crashed:
	Downloaded a PDF from internet
- Unusual behavior I noticed:
	Baloo File indexing always crashes after downloading something or moving or copying
- Custom settings of the application:
	None

The crash can be reproduced every time.

-- Backtrace:
Application: Baloo File Indexing Daemon (baloo_file), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
__pthread_mutex_lock_full (mutex=0x7f326af7f040) at ../nptl/pthread_mutex_lock.c:313
[Current thread is 1 (Thread 0x7f326af45200 (LWP 11549))]

Thread 3 (Thread 0x7f325fbb1700 (LWP 20887)):
[KCrash Handler]
#6  __memmove_avx_unaligned_erms () at ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:485
#7  0x00007f32665e4c64 in ?? () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#8  0x00007f32665e5641 in ?? () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#9  0x00007f32665e7e2c in mdb_cursor_put () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#10 0x00007f32665e9504 in mdb_txn_commit () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#11 0x00007f3269d04991 in Baloo::Transaction::commit() () from /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#12 0x0000555da3087c1d in ?? ()
#13 0x00007f32693b02b2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f32693b317d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f32679366db in start_thread (arg=0x7f325fbb1700) at pthread_create.c:463
#16 0x00007f326891088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f32605b3700 (LWP 11554)):
#0  0x00007f32688ff0b4 in __GI___libc_read (fd=5, buf=0x7f32605b2b60, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f32650ab2b0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f32650660b7 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f3265066570 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f32650666dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f32695ea8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f326958f90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f32693ae23a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f326a7fed45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f32693b317d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f32679366db in start_thread (arg=0x7f32605b3700) at pthread_create.c:463
#11 0x00007f326891088f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f326af45200 (LWP 11549)):
#0  __pthread_mutex_lock_full (mutex=0x7f326af7f040) at ../nptl/pthread_mutex_lock.c:313
#1  0x00007f32665e0aaf in ?? () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#2  0x00007f32665e2004 in mdb_txn_begin () from /usr/lib/x86_64-linux-gnu/liblmdb.so.0
#3  0x00007f3269d0426b in Baloo::Transaction::Transaction(Baloo::Database const&, Baloo::Transaction::TransactionType) () from /usr/lib/x86_64-linux-gnu/libKF5BalooEngine.so.5
#4  0x0000555da3096117 in ?? ()
#5  0x00007f32695c066f in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x0000555da3099044 in ?? ()
#7  0x00007f32695c066f in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f32695cc9d8 in QSocketNotifier::activated(int, QSocketNotifier::QPrivateSignal) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f32695ccda2 in QSocketNotifier::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f32695918c1 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f32695eb4ed in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f3265066417 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007f3265066650 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007f32650666dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007f32695ea88f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f326958f90a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f32695989b4 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x0000555da307f80c in ?? ()
#19 0x00007f3268810b97 in __libc_start_main (main=0x555da307f560, argc=1, argv=0x7ffeefc8f128, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffeefc8f118) at ../csu/libc-start.c:310
#20 0x0000555da307fa7a in _start ()

Possible duplicates by query: bug 419542.

Reported using DrKonqi