Bug 442419

Summary: Cantor crashes on launch
Product: [Applications] cantor Reporter: Oskar <ohaukeboe>
Component: generalAssignee: Cantor Bugs <cantor-bugs>
Status: RESOLVED UPSTREAM    
Severity: crash CC: alexander.semke
Priority: NOR Keywords: drkonqi
Version First Reported In: 21.08.1   
Target Milestone: ---   
Platform: Neon   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Oskar 2021-09-14 08:49:48 UTC 
Application: cantor (21.08.1)

Qt Version: 5.15.3
Frameworks Version: 5.85.0
Operating System: Linux 5.11.0-34-generic x86_64
Windowing System: X11
Drkonqi Version: 5.22.5
Distribution: KDE neon User Edition 5.22

-- Information about the crash:
- What I was doing when the application crashed:
I was launching Cantor an it crashes every time before annything shows up.

The crash can be reproduced every time.

-- Backtrace:
Application: Cantor (cantor), signal: Aborted

[New LWP 11889]
[New LWP 11890]
[New LWP 11891]
[New LWP 11892]
[New LWP 11893]
[New LWP 11894]
[New LWP 11907]
[New LWP 11909]
[New LWP 11910]
[New LWP 11915]
[New LWP 11916]
[New LWP 11917]
[New LWP 11918]
[New LWP 11919]
[New LWP 11920]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007faaa1d66aff in __GI___poll (fds=0x7ffe74d582b8, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7faa94bec200 (LWP 11888))]

Thread 16 (Thread 0x7faa33fff700 (LWP 11920)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55ab4612fee4) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55ab4612fe90, cond=0x55ab4612feb8) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55ab4612feb8, mutex=0x55ab4612fe90) at pthread_cond_wait.c:638
#3  0x00007faaa211659b in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007faaa300a18a in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#5  0x00007faaa211042c in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007faaa0c1c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007faaa1d73293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7faa38ff9700 (LWP 11919)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7faa38ff8188) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7faa38ff8138, cond=0x7faa38ff8160) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7faa38ff8160, mutex=0x7faa38ff8138) at pthread_cond_wait.c:638
#3  0x00007faaa69ba0ab in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x0000000000000000 in ?? ()

Thread 14 (Thread 0x7faa397fa700 (LWP 11918)):
#0  __lll_lock_wait_private (futex=0x7faaa1e3f4b0 <_IO_stdfile_2_lock>) at ./lowlevellock.c:35
#1  0x00007faaa1cce1f6 in buffered_vfprintf (s=s@entry=0x7faaa1e3d5c0 <_IO_2_1_stderr_>, format=format@entry=0x7faaa0a1a258 "[%s] %s\n", args=args@entry=0x7faa397f8b10, mode_flags=mode_flags@entry=2) at vfprintf-internal.c:2381
#2  0x00007faaa1ccaea4 in __vfprintf_internal (s=0x7faaa1e3d5c0 <_IO_2_1_stderr_>, format=0x7faaa0a1a258 "[%s] %s\n", ap=ap@entry=0x7faa397f8b10, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007faaa1d821b3 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007faaa0a00b36 in event_logv_ () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#5  0x00007faaa0a00d09 in event_warn () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#6  0x00007faaa0a02768 in ?? () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#7  0x00007faaa09f8625 in event_base_loop () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#8  0x00007faaa69c9947 in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007faa14002510 in ?? ()
#10 0x0001000000000000 in ?? ()
#11 0x00007faa397f9220 in ?? ()
#12 0x00007faa397f9218 in ?? ()
#13 0x00007faa397f92d8 in ?? ()
#14 0x00007faa14002510 in ?? ()
#15 0x00007faa397f9370 in ?? ()
#16 0x00007faaa1cee419 in __GI___libc_malloc (bytes=140369085829728) at malloc.c:3066
#17 0x0000000000000001 in ?? ()
#18 0x7fffffffffffffff in ?? ()
#19 0x00007faa397f9370 in ?? ()
#20 0x00007faa397f9290 in ?? ()
#21 0x00007faaa698069c in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#22 0x0000000000000000 in ?? ()

Thread 13 (Thread 0x7faa39ffb700 (LWP 11917)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7faa39ffa188) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7faa39ffa138, cond=0x7faa39ffa160) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7faa39ffa160, mutex=0x7faa39ffa138) at pthread_cond_wait.c:638
#3  0x00007faaa69ba0ab in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007faa39ffa158 in ?? ()
#5  0x00007faaa69714db in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00000000000054c4 in ?? ()
#7  0x0000000003f07e01 in ?? ()
#8  0x0000000000000000 in ?? ()

Thread 12 (Thread 0x7faa3a7fc700 (LWP 11916)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7faa3a7fb188) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7faa3a7fb138, cond=0x7faa3a7fb160) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7faa3a7fb160, mutex=0x7faa3a7fb138) at pthread_cond_wait.c:638
#3  0x00007faaa69ba0ab in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7faa3affd700 (LWP 11915)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55ab45f514a8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55ab45f513e8, cond=0x55ab45f51480) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55ab45f51480, mutex=0x55ab45f513e8) at pthread_cond_wait.c:638
#3  0x00007faaa69ba0ab in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007faa28000b60 in ?? ()
#5  0x00007faa50001c30 in ?? ()
#6  0x00007faa3affc3c0 in ?? ()
#7  0x00007faaa69a17c1 in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7faa75ffb700 (LWP 11910)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7faa75ffa0b0, clockid=<optimized out>, expected=0, futex_word=0x7faa75ffa288) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7faa75ffa0b0, clockid=<optimized out>, mutex=0x7faa75ffa238, cond=0x7faa75ffa260) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7faa75ffa260, mutex=0x7faa75ffa238, abstime=0x7faa75ffa0b0) at pthread_cond_wait.c:656
#3  0x00007faaa69ba20a in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x0000000000005541 in ?? ()
#5  0x00000000294bd337 in ?? ()
#6  0x0000000000005520 in ?? ()
#7  0x00000000294bd337 in ?? ()
#8  0x00007faa48001d88 in ?? ()
#9  0xe75c0a1d5ec6b500 in ?? ()
#10 0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7faa767fc700 (LWP 11909)):
#0  __lll_lock_wait_private (futex=0x7faaa1e3f4b0 <_IO_stdfile_2_lock>) at ./lowlevellock.c:35
#1  0x00007faaa1cce1f6 in buffered_vfprintf (s=s@entry=0x7faaa1e3d5c0 <_IO_2_1_stderr_>, format=format@entry=0x7faaa0a1a258 "[%s] %s\n", args=args@entry=0x7faa767faad0, mode_flags=mode_flags@entry=2) at vfprintf-internal.c:2381
#2  0x00007faaa1ccaea4 in __vfprintf_internal (s=0x7faaa1e3d5c0 <_IO_2_1_stderr_>, format=0x7faaa0a1a258 "[%s] %s\n", ap=ap@entry=0x7faa767faad0, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007faaa1d821b3 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007faaa0a00b36 in event_logv_ () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#5  0x00007faaa0a00d09 in event_warn () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#6  0x00007faaa0a02768 in ?? () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#7  0x00007faaa09f8625 in event_base_loop () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#8  0x00007faaa69c9947 in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007faa767fb310 in ?? ()
#10 0x0001000000000000 in ?? ()
#11 0x00007faa767fb1e0 in ?? ()
#12 0x00007faa767fb1d8 in ?? ()
#13 0x00007faa767fb298 in ?? ()
#14 0x00007faa767fb310 in ?? ()
#15 0x00007faa767fb370 in ?? ()
#16 0x00007faaa1cee419 in __GI___libc_malloc (bytes=140370109248032) at malloc.c:3066
#17 0x0000000000000001 in ?? ()
#18 0x7fffffffffffffff in ?? ()
#19 0x00007faa767fb370 in ?? ()
#20 0x00007faa767fb250 in ?? ()
#21 0x00007faaa698069c in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#22 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7faa777fe700 (LWP 11907)):
#0  __GI___libc_write (nbytes=39, buf=0x7faa777fa530, fd=2) at ../sysdeps/unix/sysv/linux/write.c:26
#1  __GI___libc_write (fd=2, buf=0x7faa777fa530, nbytes=39) at ../sysdeps/unix/sysv/linux/write.c:24
#2  0x00007faaa1ce300d in _IO_new_file_write (f=0x7faaa1e3d5c0 <_IO_2_1_stderr_>, data=0x7faa777fa530, n=39) at fileops.c:1176
#3  0x00007faaa1ce3928 in new_do_write (to_do=<optimized out>, data=0x7faa777fa530 "[warn] epoll_wait: Bad file descriptor\n", fp=0x7faaa1e3d5c0 <_IO_2_1_stderr_>) at libioP.h:948
#4  _IO_new_file_xsputn (n=39, data=<optimized out>, f=<optimized out>) at fileops.c:1255
#5  _IO_new_file_xsputn (f=0x7faaa1e3d5c0 <_IO_2_1_stderr_>, data=<optimized out>, n=39) at fileops.c:1197
#6  0x00007faaa1cce0d3 in buffered_vfprintf (s=s@entry=0x7faaa1e3d5c0 <_IO_2_1_stderr_>, format=format@entry=0x7faaa0a1a258 "[%s] %s\n", args=args@entry=0x7faa777fcaf0, mode_flags=mode_flags@entry=2) at ../libio/libioP.h:948
#7  0x00007faaa1ccaea4 in __vfprintf_internal (s=0x7faaa1e3d5c0 <_IO_2_1_stderr_>, format=0x7faaa0a1a258 "[%s] %s\n", ap=ap@entry=0x7faa777fcaf0, mode_flags=2) at vfprintf-internal.c:1346
#8  0x00007faaa1d821b3 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#9  0x00007faaa0a00b36 in event_logv_ () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#10 0x00007faaa0a00d09 in event_warn () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#11 0x00007faaa0a02768 in ?? () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#12 0x00007faaa09f8625 in event_base_loop () from /lib/x86_64-linux-gnu/libevent-2.1.so.7
#13 0x00007faaa69c9918 in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007faa4c002510 in ?? ()
#15 0x0001000000000000 in ?? ()
#16 0x00007faa777fd200 in ?? ()
#17 0x00007faa777fd1f8 in ?? ()
#18 0x00007faa777fd2b8 in ?? ()
#19 0x00000000cc9186b6 in ?? ()
#20 0x0000000000000d68 in ?? ()
#21 0x0000000000015cb6 in ?? ()
#22 0x00007faaabdf4d20 in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#23 0x000055ab45e3e280 in ?? ()
#24 0x7fffffffffffffff in ?? ()
#25 0x0000000000000001 in ?? ()
#26 0x7fffffffffffffff in ?? ()
#27 0x00007faa777fd370 in ?? ()
#28 0x00007faa777fd270 in ?? ()
#29 0x00007faaa698069c in ?? () from /lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#30 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7faa8a7fc700 (LWP 11894)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55ab45cf91d8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55ab45cf9188, cond=0x55ab45cf91b0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55ab45cf91b0, mutex=0x55ab45cf9188) at pthread_cond_wait.c:638
#3  0x00007faa9083ce7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faa9083ca7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faaa0c1c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faaa1d73293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7faa8affd700 (LWP 11893)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55ab45cf91d8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55ab45cf9188, cond=0x55ab45cf91b0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55ab45cf91b0, mutex=0x55ab45cf9188) at pthread_cond_wait.c:638
#3  0x00007faa9083ce7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faa9083ca7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faaa0c1c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faaa1d73293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7faa8b7fe700 (LWP 11892)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55ab45cf91d8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55ab45cf9188, cond=0x55ab45cf91b0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55ab45cf91b0, mutex=0x55ab45cf9188) at pthread_cond_wait.c:638
#3  0x00007faa9083ce7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faa9083ca7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faaa0c1c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faaa1d73293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7faa8bfff700 (LWP 11891)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55ab45cf91d8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55ab45cf9188, cond=0x55ab45cf91b0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55ab45cf91b0, mutex=0x55ab45cf9188) at pthread_cond_wait.c:638
#3  0x00007faa9083ce7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007faa9083ca7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007faaa0c1c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faaa1d73293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7faa93523700 (LWP 11890)):
#0  0x00007faaa1d66aff in __GI___poll (fds=0x7faa84005240, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007faa9d33336e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007faa9d3334a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007faaa23515eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007faaa22f587b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007faaa210f292 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007faa9dd68f4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007faaa211042c in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007faaa0c1c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007faaa1d73293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7faa9429d700 (LWP 11889)):
#0  0x00007faaa1d66aff in __GI___poll (fds=0x7faa9429c2a8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007faa9e999c1a in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007faa9e99b90a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007faa947c6e88 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007faaa211042c in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007faaa0c1c609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faaa1d73293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7faa94bec200 (LWP 11888)):
[KCrash Handler]
#4  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#5  0x00007faaa1c76859 in __GI_abort () at abort.c:79
#6  0x00007faa9cfb8989 in gmallocn (checkoverflow=false, size=8, count=-1) at ./goo/gmem.h:110
#7  StitchingFunction::StitchingFunction (this=0x55ab46068e50, func=0x55ab4600a900) at ./poppler/Function.cc:764
#8  0x00007faa9d016d06 in StitchingFunction::copy (this=0x55ab4600a900) at ./poppler/Function.h:200
#9  0x00007faa7c1ee3c4 in MathFunction::setArgumentDefinition (this=this@entry=0x55ab4600a900, index=<optimized out>, index@entry=1, argdef=argdef@entry=0x55ab4600aa90) at Function.cc:434
#10 0x00007faa7c38d593 in IdentityFunction::IdentityFunction (this=0x55ab4600a900) at BuiltinFunctions.cc:280
#11 0x00007faa7c2014a0 in Calculator::addBuiltinFunctions (this=0x55ab4648dcb0) at Calculator.cc:1433
#12 0x00007faa7c2102b7 in Calculator::Calculator (this=0x55ab4648dcb0) at Calculator.cc:510
#13 0x00007faa880ba1ad in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/cantor/backends/cantor_qalculatebackend.so
#14 0x00007faa880b86c6 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/cantor/backends/cantor_qalculatebackend.so
#15 0x00007faa38760bb1 in Worksheet::initSession (this=0x55ab46140b20, backend=<optimized out>) at ./src/worksheet.cpp:1530
#16 0x00007faa38762c71 in Worksheet::Worksheet (this=0x55ab46140b20, backend=0x55ab46001230, parent=<optimized out>, useDefaultWorksheetParameters=<optimized out>) at ./src/worksheet.cpp:70
#17 0x00007faa3874dadc in CantorPart::CantorPart (this=0x55ab460d5a80, parentWidget=0x55ab45dcd850, parent=<optimized out>, args=..., __in_chrg=<optimized out>, __vtt_parm=<optimized out>) at ./src/cantor_part.cpp:127
#18 0x00007faa38753d06 in KPluginFactory::createPartInstance<CantorPart> (parentWidget=0x55ab45dcd850, parent=0x55ab45dcd850, args=...) at /usr/include/KF5/KCoreAddons/kpluginfactory.h:730
#19 0x00007faaa33db462 in KPluginFactory::create (this=this@entry=0x55ab45f758a0, iface=0x7faaa38bf298 "KParts::ReadWritePart", parentWidget=parentWidget@entry=0x55ab45dcd850, parent=parent@entry=0x55ab45dcd850, args=..., keyword=...) at ./src/lib/plugin/kpluginfactory.cpp:177
#20 0x000055ab45006cd0 in KPluginFactory::create<KParts::ReadWritePart> (args=..., parent=0x55ab45dcd850, this=0x55ab45f758a0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject.h:153
#21 CantorShell::addWorksheet (this=0x55ab45b5f290, backendName=...) at ./src/cantor.cpp:352
#22 0x000055ab450085e2 in CantorShell::addWorksheet (this=0x55ab45b5f290) at ./src/cantor.cpp:281
#23 0x000055ab44ffe1dd in main (argc=<optimized out>, argv=<optimized out>) at ./src/main.cpp:119
[Inferior 1 (process 11888) detached]

Possible duplicates by query: bug 440777, bug 440257, bug 429344, bug 427384, bug 424911.

Reported using DrKonqi
Comment 1 Alexander Semke 2021-09-15 18:19:33 UTC 
The crash is triggered in qalculate. Which version of qalculate do you have on your system?
Comment 2 Oskar 2021-09-16 10:35:20 UTC 
I have version 4:21.08.1-0xneon+20.04+focal+release+build48 of cantor-backend-qalculate, but I don't have qalculate itself installed. I also just tried installing qalculate-gtk, but it did not fix the problem.
Comment 3 Alexander Semke 2021-09-19 15:39:11 UTC 
(In reply to Oskar from comment #2)
> I have version 4:21.08.1-0xneon+20.04+focal+release+build48 of
> cantor-backend-qalculate, but I don't have qalculate itself installed. I
> also just tried installing qalculate-gtk, but it did not fix the problem.

21.08 is the release version of Cantor (main program and all its plugins). Cantor relies on backend systems that need to be installed. In your case, if you install cantor-backend-qalculate also the dependency libqalculate is installed. I'm using openSUSE Leap 15.2 with libqalculate v. 3.20 and I cannot reproduce this crash. Which version of libqalculate are you using?

P.S.: Cantor doesn't seem to work for me with qalculate, but it's a different issue, I'll check it.
Comment 4 Oskar 2021-09-22 08:42:14 UTC 
I'm using libqalculate 2.8.2-1build3 which is the newest one available on KDE Neon. So that's probably it then.
Comment 5 Alexander Semke 2021-10-03 15:09:16 UTC 
(In reply to Oskar from comment #4)
> I'm using libqalculate 2.8.2-1build3 which is the newest one available on
> KDE Neon. So that's probably it then.
Is it possible for you to update to a newer version and to try again?