[Python-modules-team] Bug#962845: Bug#962811: calibre: ebook-viewer crash on start
Davide Prina
davide.prina at gmail.com
Mon Jun 15 16:52:37 BST 2020
I try to make a full debug. I never done that with a Python program, so
I have searched on internet
# apt install calibre-bin-dbgsym
$ gdb python3
Reading symbols from python3...
Reading symbols from
/usr/lib/debug/.build-id/97/0f19629d98e5c631b44f6803fa34a5a07c3806.debug...
(gdb) run /usr/bin/ebook-viewer /tmp/a.epub
[...]
(gdb) info threads
Id Target Id Frame
* 1 Thread 0x7ffff7c20740 (LWP 12042) "LoadBook" __GI_raise
(sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
2 Thread 0x7fffdf7fb700 (LWP 12048) "QXcbEventQueue"
0x00007ffff7ed1b7f in __GI___poll (fds=0x7fffdf7fad68, nfds=1,
timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
3 Thread 0x7fffde3f2700 (LWP 12049) "gmain"
0x00007ffff7ed1b7f in __GI___poll (fds=0x1527da0, nfds=1, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:29
4 Thread 0x7fffddbf1700 (LWP 12050) "pool-python3" syscall ()
at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
5 Thread 0x7fffdd394700 (LWP 12051) "gdbus"
0x00007ffff7ed1b7f in __GI___poll (fds=0x7fffd40102b0, nfds=2,
timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
6 Thread 0x7fffdcb71700 (LWP 12052) "dconf worker"
0x00007ffff7ed1b7f in __GI___poll (fds=0x153dde0, nfds=1, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:29
7 Thread 0x7fffc05cc700 (LWP 12054) "python3:rcs0"
futex_wait_cancelable (private=0, expected=0, futex_word=0x174aafc) at
../sysdeps/unix/sysv/linux/futex-internal.h:80
8 Thread 0x7fffbfc4e700 (LWP 12055) "python3:disk$0"
futex_wait_cancelable (private=0, expected=0, futex_word=0x7fffd80042c8)
at ../sysdeps/unix/sysv/linux/futex-internal.h:80
9 Thread 0x7fffbf44d700 (LWP 12056) "python3:disk$1"
futex_wait_cancelable (private=0, expected=0, futex_word=0x7fffd80042c8)
at ../sysdeps/unix/sysv/linux/futex-internal.h:80
10 Thread 0x7fffbec4c700 (LWP 12057) "python3:disk$2"
futex_wait_cancelable (private=0, expected=0, futex_word=0x7fffd80042c8)
at ../sysdeps/unix/sysv/linux/futex-internal.h:80
11 Thread 0x7fffbe44b700 (LWP 12058) "python3:disk$3"
futex_wait_cancelable (private=0, expected=0, futex_word=0x7fffd80042c8)
at ../sysdeps/unix/sysv/linux/futex-internal.h:80
12 Thread 0x7fffbd72b700 (LWP 12059) "QDBusConnection"
0x00007ffff7ed1b7f in __GI___poll (fds=0x7fffa0001de0, nfds=2,
timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
13 Thread 0x7fffa7fff700 (LWP 12060) "sandbox_ipc_thr"
0x00007ffff7ed1b7f in __GI___poll (fds=0x7fffa7ffec50, nfds=2,
timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
14 Thread 0x7fffa77fe700 (LWP 12062) "NetworkChangeNo"
0x00007ffff7edc646 in epoll_wait (epfd=35, events=0x7fff94002050,
maxevents=32, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
15 Thread 0x7fffa6ffd700 (LWP 12063) "inotify_reader"
0x00007ffff7ed4053 in __GI___select (nfds=42, readfds=0x7fffa6ffcde0,
writefds=0x0, exceptfds=0x0, timeout=0x0)
at ../sysdeps/unix/sysv/linux/select.c:41
16 Thread 0x7fffa67fc700 (LWP 12064) "TaskSchedulerSe"
0x00007ffff7edc646 in epoll_wait (epfd=42, events=0x7fff8c002040,
maxevents=32, timeout=2100000) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
17 Thread 0x7fffa5ffb700 (LWP 12065) "TaskSchedulerFo"
futex_abstimed_wait_cancelable (private=0, abstime=0x7fffa5ffac60,
clockid=<optimized out>, expected=0, futex_word=0x7fffa5ffada8)
at ../sysdeps/unix/sysv/linux/futex-internal.h:208
18 Thread 0x7fffa57fa700 (LWP 12066) "TaskSchedulerFo"
futex_abstimed_wait_cancelable (private=0, abstime=0x7fffa57f9c60,
clockid=<optimized out>, expected=0, futex_word=0x7fffa57f9da8)
at ../sysdeps/unix/sysv/linux/futex-internal.h:208
19 Thread 0x7fffa4ff9700 (LWP 12067) "TaskSchedulerFo"
futex_abstimed_wait_cancelable (private=0, abstime=0x7fffa4ff8c60,
clockid=<optimized out>, expected=0, futex_word=0x7fffa4ff8da8)
at ../sysdeps/unix/sysv/linux/futex-internal.h:208
20 Thread 0x7fff83fff700 (LWP 12068) "TaskSchedulerFo"
futex_abstimed_wait_cancelable (private=0, abstime=0x7fff83ffec60,
clockid=<optimized out>, expected=0, futex_word=0x7fff83ffeda8)
at ../sysdeps/unix/sysv/linux/futex-internal.h:208
21 Thread 0x7fff837fe700 (LWP 12069) "Chrome_IOThread"
0x00007ffff7edc646 in epoll_wait (epfd=49, events=0x7fff74002010,
maxevents=32, timeout=4943) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
22 Thread 0x7fff82ffd700 (LWP 12070) "TaskSchedulerSi"
futex_wait_cancelable (private=0, expected=0, futex_word=0x7fff82ffcdb8)
at ../sysdeps/unix/sysv/linux/futex-internal.h:80
23 Thread 0x7fff827fc700 (LWP 12071) "CompositorTileW"
futex_wait_cancelable (private=0, expected=0, futex_word=0x1ed5048) at
../sysdeps/unix/sysv/linux/futex-internal.h:80
24 Thread 0x7fff817fa700 (LWP 12073) "AudioThread"
futex_abstimed_wait_cancelable (private=0, abstime=0x7fff817f9c20,
clockid=<optimized out>, expected=0, futex_word=0x7fff817f9d68)
at ../sysdeps/unix/sysv/linux/futex-internal.h:208
25 Thread 0x7fff81ffb700 (LWP 12072) "Chrome_InProcGp"
futex_abstimed_wait_cancelable (private=0, abstime=0x7fff81ffac20,
clockid=<optimized out>, expected=0, futex_word=0x7fff81ffad68)
at ../sysdeps/unix/sysv/linux/futex-internal.h:208
26 Thread 0x7fff80ff9700 (LWP 12074) "Chrome_ChildIOT"
0x00007ffff7edc646 in epoll_wait (epfd=56, events=0x7fff68002050,
maxevents=32, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
27 Thread 0x7fff5ffff700 (LWP 12075) "threaded-ml"
0x00007ffff7ed1b7f in __GI___poll (fds=0x7fff58007170, nfds=3,
timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
28 Thread 0x7fff5f7fe700 (LWP 12076) "TaskSchedulerFo"
futex_abstimed_wait_cancelable (private=0, abstime=0x7fff5f7fdc60,
clockid=<optimized out>, expected=0, futex_word=0x7fff5f7fdda8)
at ../sysdeps/unix/sysv/linux/futex-internal.h:208
29 Thread 0x7fff5effd700 (LWP 12077) "TaskSchedulerFo"
futex_abstimed_wait_cancelable (private=0, abstime=0x7fff5effcc60,
clockid=<optimized out>, expected=0, futex_word=0x7fff5effcda8)
at ../sysdeps/unix/sysv/linux/futex-internal.h:208
30 Thread 0x7fff5e7fc700 (LWP 12078) "CacheThread_Blo"
0x00007ffff7edc646 in epoll_wait (epfd=72, events=0x7fff3c002050,
maxevents=32, timeout=30000) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
31 Thread 0x7fff5dffb700 (LWP 12079) "TaskSchedulerSi"
futex_wait_cancelable (private=0, expected=0, futex_word=0x7fff5dffadb8)
at ../sysdeps/unix/sysv/linux/futex-internal.h:80
33 Thread 0x7fff5d7fa700 (LWP 12103) "TaskSchedulerFo"
futex_abstimed_wait_cancelable (private=0, abstime=0x7fff5d7f9c60,
clockid=<optimized out>, expected=0, futex_word=0x7fff5d7f9da8)
at ../sysdeps/unix/sysv/linux/futex-internal.h:208
(gdb) python for thread in gdb.selected_inferior().threads():
thread.switch(); print(thread.num);gdb.execute('where')
I attack the result in the ebook-viewer_debug.txt file
Ciao
Davide
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32
#0 futex_abstimed_wait_cancelable (private=0, abstime=0x7fff5dffac60, clockid=<optimized out>, expected=0, futex_word=0x7fff5dffada8) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1 __pthread_cond_wait_common (abstime=0x7fff5dffac60, clockid=<optimized out>, mutex=0x7fff5dffad58, cond=0x7fff5dffad80) at pthread_cond_wait.c:520
#2 __pthread_cond_timedwait (cond=0x7fff5dffad80, mutex=0x7fff5dffad58, abstime=0x7fff5dffac60) at pthread_cond_wait.c:656
#3 0x00007fffebd6957a in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffebd69f37 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffebd6a031 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd2c762 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007fffebd2f275 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8 0x00007fffebd2f834 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
30
#0 0x00007ffff7edc646 in epoll_wait (epfd=72, events=0x7fff48002050, maxevents=32, timeout=30000) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1 0x00007fffe91c8d29 in () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#2 0x00007fffe91beff5 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#3 0x00007fffebd6fcc4 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffebd0b05f in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffebd34efd in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#8 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
29
#0 futex_wait_cancelable (private=0, expected=0, futex_word=0x7fff5e7fbdb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7fff5e7fbd68, cond=0x7fff5e7fbd90) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x7fff5e7fbd90, mutex=0x7fff5e7fbd68) at pthread_cond_wait.c:638
#3 0x00007fffebd694aa in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffebd69f48 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffebd69fef in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd2c778 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007fffebd2f588 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8 0x00007fffebd2f8b4 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
28
#0 futex_abstimed_wait_cancelable (private=0, abstime=0x7fff5f7fdc60, clockid=<optimized out>, expected=0, futex_word=0x7fff5f7fdda8) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1 __pthread_cond_wait_common (abstime=0x7fff5f7fdc60, clockid=<optimized out>, mutex=0x7fff5f7fdd58, cond=0x7fff5f7fdd80) at pthread_cond_wait.c:520
#2 __pthread_cond_timedwait (cond=0x7fff5f7fdd80, mutex=0x7fff5f7fdd58, abstime=0x7fff5f7fdc60) at pthread_cond_wait.c:656
#3 0x00007fffebd6957a in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffebd69f37 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffebd6a031 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd2c762 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007fffebd2f275 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8 0x00007fffebd2f834 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
27
#0 0x00007ffff7ed1b7f in __GI___poll (fds=0x7fff58007170, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007fffbc5444f2 in () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2 0x00007fffbc535e39 in pa_mainloop_poll () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3 0x00007fffbc5364bf in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4 0x00007fffbc536570 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5 0x00007fffbc544439 in () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6 0x00007fffbc4e2268 in () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-13.0.so
#7 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#8 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
26
#0 0x00007ffff7edc646 in epoll_wait (epfd=56, events=0x7fff68002050, maxevents=32, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1 0x00007fffe91c8d29 in () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#2 0x00007fffe91beff5 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#3 0x00007fffebd6fbda in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffebd0b05f in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffebd34efd in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#8 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
25
#0 futex_abstimed_wait_cancelable (private=0, abstime=0x7fff817f9c20, clockid=<optimized out>, expected=0, futex_word=0x7fff817f9d68) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1 __pthread_cond_wait_common (abstime=0x7fff817f9c20, clockid=<optimized out>, mutex=0x7fff817f9d18, cond=0x7fff817f9d40) at pthread_cond_wait.c:520
#2 __pthread_cond_timedwait (cond=0x7fff817f9d40, mutex=0x7fff817f9d18, abstime=0x7fff817f9c20) at pthread_cond_wait.c:656
#3 0x00007fffebd6957a in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffebd69f37 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffebce8fd8 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd0b05f in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007fffebd34efd in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#10 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
24
#0 futex_abstimed_wait_cancelable (private=0, abstime=0x7fff81ffac20, clockid=<optimized out>, expected=0, futex_word=0x7fff81ffad68) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1 __pthread_cond_wait_common (abstime=0x7fff81ffac20, clockid=<optimized out>, mutex=0x7fff81ffad18, cond=0x7fff81ffad40) at pthread_cond_wait.c:520
#2 __pthread_cond_timedwait (cond=0x7fff81ffad40, mutex=0x7fff81ffad18, abstime=0x7fff81ffac20) at pthread_cond_wait.c:656
#3 0x00007fffebd6957a in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffebd69f37 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffebce8fd8 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd0b05f in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007fffebd34efd in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#10 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
23
#0 futex_wait_cancelable (private=0, expected=0, futex_word=0x1d6c158) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x1d6c098, cond=0x1d6c130) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x1d6c130, mutex=0x1d6c098) at pthread_cond_wait.c:638
#3 0x00007fffebd694aa in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffec539488 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffebd3cbfd in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#8 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
22
#0 futex_wait_cancelable (private=0, expected=0, futex_word=0x7fff82ffcdb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7fff82ffcd68, cond=0x7fff82ffcd90) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x7fff82ffcd90, mutex=0x7fff82ffcd68) at pthread_cond_wait.c:638
#3 0x00007fffebd694aa in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffebd69f48 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffebd69fef in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd2c778 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007fffebd2f588 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8 0x00007fffebd2f874 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
21
#0 0x00007ffff7edc646 in epoll_wait (epfd=48, events=0x7fff74002010, maxevents=32, timeout=4953) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1 0x00007fffe91c8d29 in () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#2 0x00007fffe91beff5 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#3 0x00007fffebd6fcc4 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffebd0b05f in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffeb6aebd4 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd34efd in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
20
#0 futex_abstimed_wait_cancelable (private=0, abstime=0x7fff83ffec60, clockid=<optimized out>, expected=0, futex_word=0x7fff83ffeda8) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1 __pthread_cond_wait_common (abstime=0x7fff83ffec60, clockid=<optimized out>, mutex=0x7fff83ffed58, cond=0x7fff83ffed80) at pthread_cond_wait.c:520
#2 __pthread_cond_timedwait (cond=0x7fff83ffed80, mutex=0x7fff83ffed58, abstime=0x7fff83ffec60) at pthread_cond_wait.c:656
#3 0x00007fffebd6957a in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffebd69f37 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffebd6a031 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd2c762 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007fffebd2f588 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8 0x00007fffebd2f834 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
19
#0 futex_abstimed_wait_cancelable (private=0, abstime=0x7fffa4ff8c60, clockid=<optimized out>, expected=0, futex_word=0x7fffa4ff8da8) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1 __pthread_cond_wait_common (abstime=0x7fffa4ff8c60, clockid=<optimized out>, mutex=0x7fffa4ff8d58, cond=0x7fffa4ff8d80) at pthread_cond_wait.c:520
#2 __pthread_cond_timedwait (cond=0x7fffa4ff8d80, mutex=0x7fffa4ff8d58, abstime=0x7fffa4ff8c60) at pthread_cond_wait.c:656
#3 0x00007fffebd6957a in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffebd69f37 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffebd6a031 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd2c762 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007fffebd2f588 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8 0x00007fffebd2f834 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
18
#0 futex_abstimed_wait_cancelable (private=0, abstime=0x7fffa57f9c60, clockid=<optimized out>, expected=0, futex_word=0x7fffa57f9da8) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1 __pthread_cond_wait_common (abstime=0x7fffa57f9c60, clockid=<optimized out>, mutex=0x7fffa57f9d58, cond=0x7fffa57f9d80) at pthread_cond_wait.c:520
#2 __pthread_cond_timedwait (cond=0x7fffa57f9d80, mutex=0x7fffa57f9d58, abstime=0x7fffa57f9c60) at pthread_cond_wait.c:656
#3 0x00007fffebd6957a in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffebd69f37 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffebd6a031 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd2c762 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007fffebd2f588 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8 0x00007fffebd2f834 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
17
#0 futex_abstimed_wait_cancelable (private=0, abstime=0x7fffa5ffac60, clockid=<optimized out>, expected=0, futex_word=0x7fffa5ffada8) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1 __pthread_cond_wait_common (abstime=0x7fffa5ffac60, clockid=<optimized out>, mutex=0x7fffa5ffad58, cond=0x7fffa5ffad80) at pthread_cond_wait.c:520
#2 __pthread_cond_timedwait (cond=0x7fffa5ffad80, mutex=0x7fffa5ffad58, abstime=0x7fffa5ffac60) at pthread_cond_wait.c:656
#3 0x00007fffebd6957a in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffebd69f37 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffebd6a031 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd2c762 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007fffebd2f588 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8 0x00007fffebd2f834 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
16
#0 0x00007ffff7edc646 in epoll_wait (epfd=42, events=0x7fff8c002040, maxevents=32, timeout=2100000) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1 0x00007fffe91c8d29 in () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#2 0x00007fffe91beff5 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#3 0x00007fffebd6fcc4 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffebd0b05f in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffebd32ad4 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd34efd in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
15
#0 0x00007ffff7ed4053 in __GI___select (nfds=37, readfds=0x7fffa6ffcde0, writefds=0x0, exceptfds=0x0, timeout=0x0) at ../sysdeps/unix/sysv/linux/select.c:41
#1 0x00007fffebcd06cc in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#2 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#4 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
14
#0 0x00007ffff7edc646 in epoll_wait (epfd=35, events=0x7fff94002050, maxevents=32, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1 0x00007fffe91c8d29 in () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#2 0x00007fffe91beff5 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.7
#3 0x00007fffebd6fbda in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007fffebd0b05f in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5 0x00007fffebd34efd in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#8 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
13
#0 0x00007ffff7ed1b7f in __GI___poll (fds=0x7fffa7ffec50, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007fffeba2aec2 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#2 0x00007fffebd3cbfd in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3 0x00007fffebd6c4af in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#5 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
12
#0 0x00007ffff7ed1b7f in __GI___poll (fds=0x7fffa0001de0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007ffff459e7fe in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007ffff459e91f in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007ffff3f377c1 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007ffff3ee06db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007ffff3d216f1 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007ffff3a674e6 in () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7 0x00007ffff3d22872 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
11
#0 futex_wait_cancelable (private=0, expected=0, futex_word=0x1061048) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x1060ff8, cond=0x1061020) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x1061020, mutex=0x1060ff8) at pthread_cond_wait.c:638
#3 0x00007fffc6a0539b in () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#4 0x00007fffc6a04fb7 in () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#5 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
10
#0 futex_wait_cancelable (private=0, expected=0, futex_word=0x1061048) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x1060ff8, cond=0x1061020) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x1061020, mutex=0x1060ff8) at pthread_cond_wait.c:638
#3 0x00007fffc6a0539b in () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#4 0x00007fffc6a04fb7 in () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#5 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
9
#0 futex_wait_cancelable (private=0, expected=0, futex_word=0x1061048) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x1060ff8, cond=0x1061020) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x1061020, mutex=0x1060ff8) at pthread_cond_wait.c:638
#3 0x00007fffc6a0539b in () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#4 0x00007fffc6a04fb7 in () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#5 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
8
#0 futex_wait_cancelable (private=0, expected=0, futex_word=0x1061048) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x1060ff8, cond=0x1061020) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x1061020, mutex=0x1060ff8) at pthread_cond_wait.c:638
#3 0x00007fffc6a0539b in () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#4 0x00007fffc6a04fb7 in () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#5 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
7
#0 futex_wait_cancelable (private=0, expected=0, futex_word=0x1763e88) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x1763e38, cond=0x1763e60) at pthread_cond_wait.c:508
#2 __pthread_cond_wait (cond=0x1763e60, mutex=0x1763e38) at pthread_cond_wait.c:638
#3 0x00007fffc6a0539b in () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#4 0x00007fffc6a04fb7 in () at /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#5 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
6
#0 0x00007ffff7ed1b7f in __GI___poll (fds=0x15409e0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007ffff459e7fe in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007ffff459e91f in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fffe02f9d8d in () at /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
#4 0x00007ffff45c752d in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
5
#0 0x00007ffff7ed1b7f in __GI___poll (fds=0x7fffd400fc20, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007ffff459e7fe in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007ffff459eb63 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fffe2e9bf56 in () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4 0x00007ffff45c752d in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
4
#0 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1 0x00007ffff45eab02 in g_cond_wait_until () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007ffff456f5d1 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007ffff456fbc2 in g_async_queue_timeout_pop () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007ffff45c7e39 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007ffff45c752d in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#7 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
3
#0 0x00007ffff7ed1b7f in __GI___poll (fds=0x1529b60, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007ffff459e7fe in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007ffff459e91f in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007ffff459e971 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007ffff45c752d in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
2
#0 0x00007ffff7ed1b7f in __GI___poll (fds=0x7fffdf66ed68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007ffff2c44d02 in () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2 0x00007ffff2c4698a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3 0x00007fffe0110ca0 in () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4 0x00007ffff3d22872 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007ffff7dc6f27 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6 0x00007ffff7edc31f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
1
#0 __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x00007ffff7e0455b in __GI_abort () at abort.c:79
#2 0x00000000004a1abf in fatal_error (prefix=<optimized out>, msg=<optimized out>, status=-1) at ../Python/pylifecycle.c:2187
#3 0x000000000049d912 in Py_FatalError (msg=<optimized out>) at ../Python/pylifecycle.c:2197
#4 0x00000000004b73b3 in PyEval_SaveThread () at ../Python/ceval.c:380
#5 0x00007ffff43ac549 in () at /usr/lib/python3/dist-packages/PyQt5/QtCore.cpython-38-x86_64-linux-gnu.so
#6 0x00007ffff3f0c44c in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007ffff43a643e in () at /usr/lib/python3/dist-packages/PyQt5/QtCore.cpython-38-x86_64-linux-gnu.so
#8 0x00000000005f1fca in cfunction_call_varargs (kwargs=<optimized out>, args=<optimized out>, func=<built-in method emit of PyQt5.QtCore.pyqtBoundSignal object at remote 0x7fffbc357cf0>)
at ../Include/internal/pycore_pyerrors.h:13
#9 PyCFunction_Call (func=<built-in method emit of PyQt5.QtCore.pyqtBoundSignal object at remote 0x7fffbc357cf0>, args=<optimized out>, kwargs=<optimized out>) at ../Objects/call.c:772
#10 0x000000000056d160 in do_call_core (kwdict=0x0, callargs=(False,), func=<built-in method emit of PyQt5.QtCore.pyqtBoundSignal object at remote 0x7fffbc357cf0>, tstate=<optimized out>)
at ../Python/ceval.c:4983
#11 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at ../Python/ceval.c:3559
#12 0x00000000005f10c6 in PyEval_EvalFrameEx
(throwflag=0, f=Frame 0x7fffe0b5b040, for file /usr/lib/calibre/calibre/gui2/webengine.py, line 126, in _dispatch_messages (self=<ViewerBridge(_signals='["customize_toolbar", "view_created", "toggle_highlights", "find_next", "new_bookmark", "search_result_not_found", "highlights_changed", "view_image", "change_background_image", "scrollbar_context_menu", "set_session_data", "quit", "report_cfi", "reference_mode_changed", "autoscroll_state_changed", "toggle_toc", "show_loading_message", "clear_history", "export_shortcut_map", "show_error", "print_book", "update_current_toc_nodes", "toggle_lookup", "reset_interface", "content_file_changed", "overlay_visibility_changed", "toggle_full_screen", "set_local_storage", "reload_book", "copy_selection", "close_prep_finished", "toggle_inspector", "copy_image", "selection_changed", "show_search", "toggle_bookmarks", "ask_for_open"]', _signals_registered=True, create_view=<to_js_bound(name='create_view') at remote 0x7fffbc359ee0>, start_book_load=<to_js_bound(name='start_book_load') at re...(truncated)) at ../Python/ceval.c:741
#13 function_code_fastcall (globals=<optimized out>, nargs=<optimized out>, args=<optimized out>, co=<optimized out>) at ../Objects/call.c:283
#14 _PyFunction_Vectorcall (func=<optimized out>, stack=<optimized out>, nargsf=<optimized out>, kwnames=<optimized out>) at ../Objects/call.c:410
#15 0x0000000000506a6c in _PyObject_Vectorcall (kwnames=<optimized out>, nargsf=<optimized out>, args=<optimized out>, callable=<optimized out>) at ../Include/cpython/abstract.h:127
#16 method_vectorcall (method=<optimized out>, args=0x7ffff4698568, nargsf=<optimized out>, kwnames=<optimized out>) at ../Objects/classobject.c:89
#17 0x00000000005f1847 in PyVectorcall_Call (kwargs=<optimized out>, tuple=<optimized out>, callable=<method at remote 0x7fffe1a115c0>) at ../Objects/call.c:199
#18 PyObject_Call (callable=<method at remote 0x7fffe1a115c0>, args=<optimized out>, kwargs=<optimized out>) at ../Objects/call.c:227
#19 0x00007ffff6d65d6c in () at /usr/lib/python3/dist-packages/sip.cpython-38-x86_64-linux-gnu.so
#20 0x00007ffff6d65f99 in () at /usr/lib/python3/dist-packages/sip.cpython-38-x86_64-linux-gnu.so
#21 0x00007fffe0c15f5b in () at /usr/lib/python3/dist-packages/PyQt5/QtWebEngineWidgets.cpython-38-x86_64-linux-gnu.so
#22 0x00007fffe0ba8a32 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5
#23 0x00007fffea0fe57a in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#24 0x00007fffeb8199d3 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#25 0x00007fffeb838424 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#26 0x00007fffeb9eaf57 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#27 0x00007fffec32a454 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#28 0x00007fffebcca270 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#29 0x00007fffebcea4f1 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#30 0x00007fffebceb20f in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#31 0x00007fffebceb38d in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#32 0x00007fffea081517 in () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#33 0x00007ffff3f0cd45 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007ffff1a83c32 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#35 0x00007ffff1a8d190 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007ffff235b15e in () at /usr/lib/python3/dist-packages/PyQt5/QtWidgets.cpython-38-x86_64-linux-gnu.so
#37 0x00007ffff3ee1a52 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007ffff3ee4648 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007ffff3f38183 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007ffff459e60d in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007ffff459e890 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#42 0x00007ffff459e91f in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007ffff3f377c1 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#44 0x00007ffff3ee06db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#45 0x00007ffff3ee8182 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#46 0x00007ffff231df6d in () at /usr/lib/python3/dist-packages/PyQt5/QtWidgets.cpython-38-x86_64-linux-gnu.so
#47 0x00000000005f1fca in cfunction_call_varargs (kwargs=<optimized out>, args=<optimized out>, func=<built-in method exec_ of Application object at remote 0x7ffff788f280>)
at ../Include/internal/pycore_pyerrors.h:13
#48 PyCFunction_Call (func=<built-in method exec_ of Application object at remote 0x7ffff788f280>, args=<optimized out>, kwargs=<optimized out>) at ../Objects/call.c:772
#49 0x00000000005f23ae in _PyObject_MakeTpCall (callable=<built-in method exec_ of Application object at remote 0x7ffff788f280>, args=<optimized out>, nargs=<optimized out>, keywords=<optimized out>)
at ../Include/internal/pycore_pyerrors.h:13
#50 0x000000000056c782 in _PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=0x1310920, callable=<built-in method exec_ of Application object at remote 0x7ffff788f280>)
at ../Include/cpython/abstract.h:125
#51 _PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=0x1310920, callable=<built-in method exec_ of Application object at remote 0x7ffff788f280>) at ../Include/cpython/abstract.h:115
#52 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x95a130) at ../Python/ceval.c:4963
#53 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at ../Python/ceval.c:3469
#54 0x0000000000565602 in PyEval_EvalFrameEx
(throwflag=0, f=Frame 0x1310740, for file /usr/lib/calibre/calibre/gui2/viewer/main.py, line 1765, in main (args=['/usr/bin/ebook-viewer', '/tmp/a.epub'], scheme=<QWebEngineUrlScheme at remote 0x7ffff0563e40>, override='calibre-ebook-viewer', app=<Application(ignore_palette_changes=False, file_event_hook=<EventAccumulator(events=[]) at remote 0x7fffe07af040>, headless=False, pi=<module at remote 0x7fffe0d32090>, signal_notifier=<QSocketNotifier at remote 0x7fffe07af1f0>, using_calibre_style=True, _Application__icon_map_memory_={<StandardPixmap at remote 0x7fffe07c55c0>: '/usr/share/calibre/images/ok.png', <StandardPixmap at remote 0x7fffe07c5480>: '/usr/share/calibre/images/window-close.png', <StandardPixmap at remote 0x7fffe07c53c0>: '/usr/share/calibre/images/window-close.png', <StandardPixmap at remote 0x7fffe07c54c0>: '/usr/share/calibre/images/ok.png', <StandardPixmap at remote 0x7fffe07c5380>: '/usr/share/calibre/images/window-close.png', <StandardPixmap at remote 0x7fffe07c5440>: '/usr/share/calibre/images/help.png', ...(truncated)) at ../Python/ceval.c:741
#55 _PyEval_EvalCodeWithName
(_co=<optimized out>, globals=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=<optimized out>, kwnames=<optimized out>, kwargs=0x7ffff780cf60, kwcount=<optimized out>, kwstep=1, defs=0x7ffff050e088, defcount=1, kwdefs=0x0, closure=0x0, name='main', qualname='main') at ../Python/ceval.c:4298
#56 0x00000000005f12a3 in _PyFunction_Vectorcall (func=<optimized out>, stack=0x7ffff780cf58, nargsf=<optimized out>, kwnames=<optimized out>) at ../Objects/call.c:435
#57 0x00000000005672f6 in _PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=0x7ffff780cf58, callable=<function at remote 0x7fffe02ebf70>) at ../Include/cpython/abstract.h:127
#58 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x95a130) at ../Python/ceval.c:4963
#59 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at ../Python/ceval.c:3500
#60 0x00000000006aa5f8 in PyEval_EvalFrameEx
(throwflag=0, f=Frame 0x7ffff780cdd0, for file /usr/lib/calibre/calibre/gui_launch.py, line 81, in ebook_viewer (args=['/usr/bin/ebook-viewer', '/tmp/a.epub'], main=<function at remote 0x7fffe02ebf70>))
at ../Python/ceval.c:741
#61 function_code_fastcall (co=<optimized out>, args=<optimized out>, nargs=<optimized out>, globals=<optimized out>) at ../Objects/call.c:283
#62 0x00000000005672f6 in _PyObject_Vectorcall (kwnames=0x0, nargsf=<optimized out>, args=0x7ffff783f7c0, callable=<function at remote 0x7ffff6ee0a60>) at ../Include/cpython/abstract.h:127
#63 call_function (kwnames=0x0, oparg=<optimized out>, pp_stack=<synthetic pointer>, tstate=0x95a130) at ../Python/ceval.c:4963
#64 _PyEval_EvalFrameDefault (f=<optimized out>, throwflag=<optimized out>) at ../Python/ceval.c:3500
#65 0x0000000000565602 in PyEval_EvalFrameEx (throwflag=0, f=Frame 0x7ffff783f640, for file /usr/bin/ebook-viewer, line 20, in <module> ()) at ../Python/ceval.c:741
#66 _PyEval_EvalCodeWithName
(_co=<optimized out>, globals=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=<optimized out>, kwnames=<optimized out>, kwargs=0x0, kwcount=<optimized out>, kwstep=2, defs=0x0, defcount=0, kwdefs=0x0, closure=0x0, name=0x0, qualname=0x0) at ../Python/ceval.c:4298
#67 0x00000000006857f3 in PyEval_EvalCodeEx (closure=0x0, kwdefs=0x0, defcount=0, defs=0x0, kwcount=0, kws=0x0, argcount=0, args=0x0, locals=<optimized out>, globals=<optimized out>, _co=<optimized out>)
at ../Python/ceval.c:4327
#68 PyEval_EvalCode (co=<optimized out>, globals=<optimized out>, locals=<optimized out>) at ../Python/ceval.c:718
#69 0x0000000000674b51 in run_eval_code_obj
(co=0x7ffff77be2f0, globals={'__name__': '__main__', '__doc__': "\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n", '__package__': None, '__loader__': <SourceFileLoader(name='__main__', path='/usr/bin/ebook-viewer') at remote 0x7ffff789e7f0>, '__spec__': None, '__annotations__': {}, '__builtins__': <module at remote 0x7ffff78c90e0>, '__file__': '/usr/bin/ebook-viewer', '__cached__': None, 'sys': <module at remote 0x7ffff78bde00>, 'os': <module at remote 0x7ffff7875360>, 'path': '/usr/lib/calibre', 'ebook_viewer': <function at remote 0x7ffff6ee0a60>}, locals={'__name__': '__main__', '__doc__': "\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n", '__package__': None, '__loader__': <SourceFileLoader(name='__main__', path='/usr/bin/ebook-viewer') at remote 0x7ffff789e7f0>, '__spec__': None, '__annotations__': {}, '__builtins__': <module at remote 0x7ffff78c90e0>, '__file__': '/usr/bin/ebook-viewer', '__cached__': None, 'sys': <module at remote 0x7ffff78bde00>, 'os': <module at remote 0x7ffff7875360>, 'path': '/usr/lib/calibre', 'ebook_viewer': <function at remote 0x7ffff6ee0a60>})
at ../Python/pythonrun.c:1125
#70 0x0000000000674bcf in run_mod
(mod=<optimized out>, filename=<optimized out>, globals={'__name__': '__main__', '__doc__': "\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n", '__package__': None, '__loader__': <SourceFileLoader(name='__main__', path='/usr/bin/ebook-viewer') at remote 0x7ffff789e7f0>, '__spec__': None, '__annotations__': {}, '__builtins__': <module at remote 0x7ffff78c90e0>, '__file__': '/usr/bin/ebook-viewer', '__cached__': None, 'sys': <module at remote 0x7ffff78bde00>, 'os': <module at remote 0x7ffff7875360>, 'path': '/usr/lib/calibre', 'ebook_viewer': <function at remote 0x7ffff6ee0a60>}, locals={'__name__': '__main__', '__doc__': "\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n", '__package__': None, '__loader__': <SourceFileLoader(name='__main__', path='/usr/bin/ebook-viewer') at remote 0x7ffff789e7f0>, '__spec__': None, '__annotations__': {}, '__builtins__': <module at remote 0x7ffff78c90e0>, '__file__': '/usr/bin/ebook-viewer', '__cached__': None, 'sys': <module at remote 0x7ffff78bde00>, 'os': <module at remote 0x7ffff7875360>, 'path': '/usr/lib/calibre', 'ebook_viewer': <function at remote 0x7ffff6ee0a60>}, flags=<optimized out>, arena=<optimized out>) at ../Python/pythonrun.c:1147
#71 0x0000000000674c87 in PyRun_FileExFlags
(fp=0x958dc0, filename_str=<optimized out>, start=<optimized out>, globals={'__name__': '__main__', '__doc__': "\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n", '__package__': None, '__loader__': <SourceFileLoader(name='__main__', path='/usr/bin/ebook-viewer') at remote 0x7ffff789e7f0>, '__spec__': None, '__annotations__': {}, '__builtins__': <module at remote 0x7ffff78c90e0>, '__file__': '/usr/bin/ebook-viewer', '__cached__': None, 'sys': <module at remote 0x7ffff78bde00>, 'os': <module at remote 0x7ffff7875360>, 'path': '/usr/lib/calibre', 'ebook_viewer': <function at remote 0x7ffff6ee0a60>}, locals={'__name__': '__main__', '__doc__': "\nThis is the standard runscript for all of calibre's tools.\nDo not modify it unless you know what you are doing.\n", '__package__': None, '__loader__': <SourceFileLoader(name='__main__', path='/usr/bin/ebook-viewer') at remote 0x7ffff789e7f0>, '__spec__': None, '__annotations__': {}, '__builtins__': <module at remote 0x7ffff78c90e0>, '__file__': '/usr/bin/ebook-viewer', '__cached__': None, 'sys': <module at remote 0x7ffff78bde00>, 'os': <module at remote 0x7ffff7875360>, 'path': '/usr/lib/calibre', 'ebook_viewer': <function at remote 0x7ffff6ee0a60>}, closeit=1, flags=0x7fffffffddb8) at ../Python/pythonrun.c:1063
#72 0x0000000000676c5a in PyRun_SimpleFileExFlags (fp=0x958dc0, filename=<optimized out>, closeit=1, flags=0x7fffffffddb8) at ../Python/pythonrun.c:428
#73 0x00000000006ae8fe in pymain_run_file (cf=0x7fffffffddb8, config=0x9594c0) at ../Modules/main.c:381
#74 pymain_run_python (exitcode=0x7fffffffddb0) at ../Modules/main.c:565
#75 Py_RunMain () at ../Modules/main.c:644
#76 0x00000000006aec89 in Py_BytesMain (argc=<optimized out>, argv=<optimized out>) at ../Modules/main.c:698
#77 0x00007ffff7e05e0b in __libc_start_main (main=0x4eb6e0 <main>, argc=3, argv=0x7fffffffdf88, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffdf78) at ../csu/libc-start.c:308
#78 0x00000000005f59da in _start () at ../Objects/obmalloc.c:1233
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