Your message dated Tue, 16 Jun 2020 14:20:42 +0300
with message-id <[email protected]>
and subject line Re: Bug#962846: Bug#962811: calibre: ebook-viewer crash on
start
has caused the Debian Bug report #962845,
regarding pyqt5webengine: fails to block pyqt5 update
to be marked as done.
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962845: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=962845
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--- Begin Message ---
Package: calibre
Version: 4.99.4+dfsg+really4.17.0-1
Severity: normal
Dear Maintainer,
ebook-viewer crash for every ebook I try to open
$ ebook-viewer a.epub
Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use
QT_QPA_PLATFORM=wayland to run on Wayland anyway.
Fatal Python error: PyEval_SaveThread: NULL tstate
Python runtime state: initialized
Current thread 0x00007f3ee047d740 (most recent call first):
File "/usr/lib/calibre/calibre/gui2/webengine.py", line 126 in
_dispatch_messages
File "/usr/lib/calibre/calibre/gui2/viewer/main.py", line 229 in main
File "/usr/lib/calibre/calibre/gui_launch.py", line 81 in ebook_viewer
File "/usr/bin/ebook-viewer", line 20 in <module>
Annullato
I have found this bug report in arch:
https://bugs.archlinux.org/task/66905
in this bug report the prolem is a python2 library, I have see that the
corresponding python3 library has been updated today:
python3-pyqt5
but I cant try to install the previews version, elsewhere it will remove
calibre and so I cannot test if this is the problem.
Let me know if you need more information or what I can do for try to
understand the problem
Ciao
Davide
-- System Information:
Debian Release: bullseye/sid
APT prefers testing-debug
APT policy: (500, 'testing-debug'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 5.6.14-dp-20200530 (SMP w/4 CPU cores; PREEMPT)
Kernel taint flags: TAINT_UNSIGNED_MODULE
Locale: LANG=it_IT.utf8, LC_CTYPE=it_IT.utf8 (charmap=UTF-8),
LANGUAGE=it_IT.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages calibre depends on:
ii calibre-bin 4.99.4+dfsg+really4.17.0-1+b1
ii dpkg 1.19.7
ii fonts-liberation 1:1.07.4-11
ii imagemagick 8:6.9.10.23+dfsg-2.1+b2
ii imagemagick-6.q16 [imagemagick] 8:6.9.10.23+dfsg-2.1+b2
ii libjpeg-turbo-progs 1:1.5.2-2+b1
ii libjs-mathjax 2.7.8+dfsg-1
ii libjxr-tools 1.1-6+b1
ii optipng 0.7.7-1+b1
ii poppler-utils 0.71.0-6
ii python3 3.8.2-3
ii python3-apsw 3.30.1-r1-1.1+b1
ii python3-bs4 4.9.1-1
ii python3-chardet 3.0.4-7
ii python3-chm 0.8.6-2+b1
ii python3-css-parser 1.0.4-2
ii python3-cssselect 1.1.0-2
ii python3-cssutils 1.0.2-3
ii python3-dateutil 2.8.1-4
ii python3-dbus 1.2.16-2
ii python3-feedparser 5.2.1-2
ii python3-html2text 2020.1.16-1
ii python3-html5-parser 0.4.9-3+b1
ii python3-html5lib 1.0.1-3
ii python3-lxml 4.5.0-1.1
ii python3-markdown 3.2.2-1
ii python3-mechanize 1:0.4.5-2
ii python3-msgpack 0.6.2-1+b1
ii python3-netifaces 0.10.9-0.2+b1
ii python3-pil 7.0.0-4+b1
ii python3-pkg-resources 46.1.3-1
ii python3-pygments 2.3.1+dfsg-3
ii python3-pyparsing 2.4.7-1
ii python3-pyqt5 5.15.0+dfsg-1
ii python3-pyqt5.qtsvg 5.15.0+dfsg-1
ii python3-pyqt5.qtwebengine 5.14.0-2+b1
ii python3-regex 0.1.20190819-2+b1
ii python3-routes 2.4.1-2
ii python3-zeroconf 0.26.1-1
ii xdg-utils 1.1.3-2
Versions of packages calibre recommends:
ii python3-dnspython 1.16.0-2
ii udisks2 2.9.0-1
Versions of packages calibre suggests:
ii python3-openssl 19.1.0-2
pn python3-unrardll <none>
-- debconf-show failed
--- End Message ---
--- Begin Message ---
Hi Davide!
On Mon, Jun 15, 2020 at 05:52:37PM +0200, Davide Prina wrote:
> I try to make a full debug. I never done that with a Python program, so I
> have searched on internet
Thanks!
> #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
So this seems to be the relevant part here.
I managed to reproduce this issue locally with some dbg packages installed,
and this part of stacktrace is as follows:
#9 0x000000000051cb0a in Py_FatalError (msg=msg@entry=0x6d9a88
"PyEval_SaveThread: NULL tstate") at ../Python/pylifecycle.c:2197
#10 0x00000000004db7d7 in PyEval_SaveThread () at ../Python/ceval.c:380
#11 0x00007ffff45f105c in qt_metacall_worker(sipSimpleWrapper*, PyTypeObject*,
sipTypeDef*, QMetaObject::Call, int, void**)
(pySelf=0x7fffc0522c30, pytype=<optimized out>, base=<optimized out>,
_c=QMetaObject::InvokeMetaMethod, _id=19, _a=0x27ac0e0)
at ../../qpy/QtCore/qpycore_qobject_helpers.cpp:106
#12 0x00007ffff413944c in QMetaObject::activate(QObject*, int, int, void**)
(sender=0x20249a0, signalOffset=<optimized out>,
local_signal_index=<optimized out>, argv=<optimized out>)
at kernel/qobject.cpp:3821
#13 0x00007ffff45e9a9e in do_emit (sigargs=<optimized out>,
docstring=<optimized out>, parsed_signature=0x144cb30,
signal_index=<optimized out>, qtx=<optimized out>)
at ../../qpy/QtCore/qpycore_pyqtboundsignal.cpp:801
#14 pyqtBoundSignal_emit(PyObject*, PyObject*) (self=<optimized out>,
args=<optimized out>)
at ../../qpy/QtCore/qpycore_pyqtboundsignal.cpp:742
#15 0x00000000004344fb in cfunction_call_varargs (func=0x7fffc20b5530,
args=0x7ffff4923b40, kwargs=0x0) at ../Objects/call.c:757
It looks like a change in qpycore_qobject_helpers.cpp in PyQt 5.15 needed
a corresponding change in sip [1] that is part of sip 4.19.23, and all
dependent packages need to be rebuilt against that sip.
[1]: https://riverbankcomputing.com/hg/sip/rev/812b5e26df96
I will add a Breaks: against old pyqt5webengine to new pyqt5. Now that new
pyqt5webengine is already in testing, this is not urgent, but it will be
part of the next upload.
There is nothing I can do about this in pyqt5webengine, so I am closing the
bug filed against it.
--
Dmitry Shachnev
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