qbittorrent-4.5.0 gets into some infinite loop upon exit and uses 100% cpu #18093

slashbeast · 2022-11-28T23:06:46Z

qBittorrent & operating system versions

qbittorrent: 4.5.0
OS: Gentoo ~amd64
Qt: 5.15.5
libtorrent-rastbar-1.2.18

What is the problem?

While 4.4.5 version works okay, the 4.5.0 seems to go into some infinite loop on exit and spam the console with the following until kill -9'd

2055# 0x00007F2C81AC082C in /lib64/libc.so.6
2056# gsignal in /lib64/libc.so.6
2057# abort in /lib64/libc.so.6
2058# 0x00007F2C81492CE5 in /usr/lib64/libQt5Core.so.5
2059# 0x00007F2C8315754B in /usr/lib64/libQt5Widgets.so.5
2060# QDialog::QDialog(QWidget*, QFlags<Qt::WindowType>) in /usr/lib64/libQt5Widgets.so.5
2061# StacktraceDialog::StacktraceDialog(QWidget*) in qbittorrent
2062# 0x000055FCACEEA595 in qbittorrent
2063# 0x00007F2C81A70380 in /lib64/libc.so.6
2064# 0x00007F2C81AC082C in /lib64/libc.so.6
2065# gsignal in /lib64/libc.so.6
2066# abort in /lib64/libc.so.6
2067# 0x00007F2C81492CE5 in /usr/lib64/libQt5Core.so.5
2068# 0x00007F2C8315754B in /usr/lib64/libQt5Widgets.so.5
2069# QDialog::QDialog(QWidget*, QFlags<Qt::WindowType>) in /usr/lib64/libQt5Widgets.so.5
2070# StacktraceDialog::StacktraceDialog(QWidget*) in qbittorrent
2071# 0x000055FCACEEA595 in qbittorrent
2072# 0x00007F2C81A70380 in /lib64/libc.so.6
2073# 0x00007F2C81AC082C in /lib64/libc.so.6
2074# gsignal in /lib64/libc.so.6
2075# abort in /lib64/libc.so.6
2076# 0x00007F2C81492CE5 in /usr/lib64/libQt5Core.so.5
2077# 0x00007F2C8315754B in /usr/lib64/libQt5Widgets.so.5
2078# QDialog::QDialog(QWidget*, QFlags<Qt::WindowType>) in /usr/lib64/libQt5Widgets.so.5
2079# StacktraceDialog::StacktraceDialog(QWidget*) in qbittorrent
2080# 0x000055FCACEEA595 in qbittorrent
2081# 0x00007F2C81A70380 in /lib64/libc.so.6
2082# 0x00007F2C81AC082C in /lib64/libc.so.6
2083# gsignal in /lib64/libc.so.6
2084# abort in /lib64/libc.so.6
2085# 0x00007F2C81492CE5 in /usr/lib64/libQt5Core.so.5
2086# 0x00007F2C8315754B in /usr/lib64/libQt5Widgets.so.5
2087# QDialog::QDialog(QWidget*, QFlags<Qt::WindowType>) in /usr/lib64/libQt5Widgets.so.5
2088# StacktraceDialog::StacktraceDialog(QWidget*) in qbittorrent
2089# 0x000055FCACEEA595 in qbittorrent
2090# 0x00007F2C81A70380 in /lib64/libc.so.6
2091# QWidget::~QWidget() in /usr/lib64/libQt5Widgets.so.5
2092# 0x00007F2C835861AD in /usr/lib64/libQt5Widgets.so.5
2093# 0x00007F2C83585802 in /usr/lib64/libQt5Widgets.so.5
2094# QSystemTrayIcon::~QSystemTrayIcon() in /usr/lib64/libQt5Widgets.so.5
2095# QSystemTrayIcon::~QSystemTrayIcon() in /usr/lib64/libQt5Widgets.so.5
2096# QObjectPrivate::deleteChildren() in /usr/lib64/libQt5Core.so.5
2097# QObject::~QObject() in /usr/lib64/libQt5Core.so.5
2098# DesktopIntegration::~DesktopIntegration() in qbittorrent
2099# QObjectPrivate::deleteChildren() in /usr/lib64/libQt5Core.so.5
2100# QObject::~QObject() in /usr/lib64/libQt5Core.so.5
2101# Application::~Application() in qbittorrent
2102# main in qbittorrent
2103# 0x00007F2C81A5B2CA in /lib64/libc.so.6
2104# __libc_start_main in /lib64/libc.so.6
2105# _start in qbittorrent

QWidget: Must construct a QApplication before a QWidget
zsh: terminated  qbittorrent

Steps to reproduce

start qbittorrent
exit qbittorrent
See it using 100% CPU and spamming the stdout/err with the above.

Additional context

No response

Log(s) & preferences file(s)

No response

The text was updated successfully, but these errors were encountered:

pitsi · 2022-11-29T05:38:05Z

Same thing here and I am killing it with killall -9! :(
Debian testing/unstable x64, qt 5.15.6, libtorrent-rasterbar 2.0.8.0.

---edit
I have moved ~/.local/share/data/qBittorrent to .local/share/qBittorrent as suggested by the output in the terminal, but nothing changed

marillat · 2022-11-29T07:51:22Z

I see also this bug under Debian unstable amd4
qbittorrent: 4.5.0
Qt: 5.15.6
ibtorrent-rastbar: 2.0.8

Here in the gdb backtrace

Thread 1 "qbittorrent" received signal SIGSEGV, Segmentation fault.
0x00007ffff6da07a7 in QWidget::~QWidget (this=0x55555613ea80, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1478
1478	kernel/qwidget.cpp: Aucun fichier ou dossier de ce type.
(gdb) bt
#0  0x00007ffff6da07a7 in QWidget::~QWidget (this=0x55555613ea80, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1478
#1  0x00007ffff7106fad in QSystemTrayIconSys::~QSystemTrayIconSys (this=0x55555613ea80, __in_chrg=<optimized out>) at util/qsystemtrayicon_x11.cpp:76
#2  QSystemTrayIconSys::~QSystemTrayIconSys (this=0x55555613ea80, __in_chrg=<optimized out>) at util/qsystemtrayicon_x11.cpp:76
#3  0x00007ffff71065c2 in QSystemTrayIconPrivate::destroyIcon (this=0x555556262370) at util/qsystemtrayicon_x11.cpp:278
#4  QSystemTrayIconPrivate::destroyIcon (this=0x555556262370) at util/qsystemtrayicon_x11.cpp:272
#5  QSystemTrayIconPrivate::remove_sys (this=0x555556262370) at util/qsystemtrayicon_x11.cpp:269
#6  0x00007ffff70e5d0b in QSystemTrayIcon::~QSystemTrayIcon (this=0x555556233590, __in_chrg=<optimized out>) at util/qsystemtrayicon.cpp:182
#7  0x00007ffff70e5d29 in QSystemTrayIcon::~QSystemTrayIcon (this=0x555556233590, __in_chrg=<optimized out>) at util/qsystemtrayicon.cpp:183
#8  0x00007ffff5edafee in QObjectPrivate::deleteChildren() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ffff5ee6db4 in QObject::~QObject() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x000055555596a6ed in DesktopIntegration::~DesktopIntegration() ()
#11 0x00007ffff5edafee in QObjectPrivate::deleteChildren() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007ffff5ee6db4 in QObject::~QObject() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00005555556cc4f9 in Application::~Application() ()
#14 0x00005555556a2dc4 in main ()

corvus1 · 2022-11-29T17:47:42Z

I see also this bug under Debian unstable amd4

Could you link it to me? I have a suspicion about what might be causing this and why I can't reproduce. And I'd like to participate.

shanechko · 2022-11-29T19:27:30Z

I am unable to reproduce too.

Qt: 5.15.5
Libtorrent: 2.0.8.0
Boost: 1.80.0
OpenSSL: 3.0.7
Zlib: 1.2.13

Environment: KDE, Xorg

marillat · 2022-11-29T23:21:46Z

I see also this bug under Debian unstable amd4

Could you link it to me? I have a suspicion about what might be causing this and why I can't reproduce. And I'd like to participate.

http://ftp.fr.debian.org/debian/pool/main/q/qbittorrent/qbittorrent_4.5.0-1_amd64.deb

corvus1 · 2022-11-30T01:55:42Z

Unfortunately I wasn't able to run it on my system, even though, I even went as far as downloading and LD_PRELOADING openssl3 from debian. We probably have different ABIs. and qbit crashed on start.

Anyway. My hunch is, we also have different glibc versions. I'm currently running 2.36. But that probably won't tell us much. We'd probably have to compare what kind of patches and stuff we have in our distributions.

shanechko · 2022-11-30T11:28:21Z

@slashbeast could you show you USE flags for Qt ?
My is:

dev-qt/qtwidgets-5.15.5-r1:5/5.15::gentoo USE="X dbus png -debug -gles2-only -gtk -test"
dev-qt/qtgui-5.15.5-r2:5/5.15.5::gentoo USE="X accessibility dbus egl evdev gif jpeg libinput png udev vulkan wayland -debug -eglfs -gles2-only -ibus -linuxfb -test -tslib -tuio -vnc"

slashbeast · 2022-11-30T12:13:39Z

Sure

qtwidgets USE="X dbus png -debug -gles2-only -gtk -test"
qtgui USE="X dbus egl jpeg libinput png udev vulkan wayland -accessibility -debug -eglfs -evdev -gles2-only -ibus
-linuxfb -test -tslib -tuio -vnc"

This is on xorg. I see the 5.15.7 is in tree, will bump the whole thing and see if I can still reproduce it.

corvus1 · 2022-11-30T12:29:40Z

5.15.7 didn't change anything for me. It was working fine before, it works fine now.

marillat · 2022-11-30T12:47:11Z

As the gdb backtrace suggest this bug is related to notification.

Disabling notification 'fix' this issue.

As noticed by @corvus1 this bug is a duplicate with #18072

marillat · 2022-11-30T13:16:06Z

I confirm that PR #18108 fix this issue

Otherwise it is destructed in QObject destructor, i.e. after GUI application is already destructed. This can be related to some problems with system tray icon. PR #18108. Closes #18093.

Otherwise it is destructed in QObject destructor, i.e. after GUI application is already destructed. This can be related to some problems with system tray icon. PR qbittorrent#18108. Closes qbittorrent#18093.

pitsi · 2022-11-30T17:14:14Z

I confirm that disabling the tray icon as suggested by @marillat fixes the issue.
I will keep it that way until the next update that will fix it.

thalieht added OS: Linux Issues specific to Linux distributions Crash labels Nov 29, 2022

karabaja4 mentioned this issue Nov 30, 2022

qbittorrent 4.5.0 won't exit #18072

Closed

sledgehammer999 mentioned this issue Nov 30, 2022

Destroy desktop integration at correct place #18108

Merged

glassez closed this as completed in #18108 Nov 30, 2022

glassez mentioned this issue Nov 30, 2022

Destroy desktop integration at correct place #18119

Merged

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qbittorrent-4.5.0 gets into some infinite loop upon exit and uses 100% cpu #18093

qbittorrent-4.5.0 gets into some infinite loop upon exit and uses 100% cpu #18093

slashbeast commented Nov 28, 2022 •

edited

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pitsi commented Nov 29, 2022 •

edited

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marillat commented Nov 29, 2022 •

edited

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corvus1 commented Nov 29, 2022

shanechko commented Nov 29, 2022

marillat commented Nov 29, 2022

corvus1 commented Nov 30, 2022

shanechko commented Nov 30, 2022

slashbeast commented Nov 30, 2022

corvus1 commented Nov 30, 2022

marillat commented Nov 30, 2022

marillat commented Nov 30, 2022

pitsi commented Nov 30, 2022

qbittorrent-4.5.0 gets into some infinite loop upon exit and uses 100% cpu #18093

qbittorrent-4.5.0 gets into some infinite loop upon exit and uses 100% cpu #18093

Comments

slashbeast commented Nov 28, 2022 • edited Loading

qBittorrent & operating system versions

What is the problem?

Steps to reproduce

Additional context

Log(s) & preferences file(s)

pitsi commented Nov 29, 2022 • edited Loading

marillat commented Nov 29, 2022 • edited Loading

corvus1 commented Nov 29, 2022

shanechko commented Nov 29, 2022

marillat commented Nov 29, 2022

corvus1 commented Nov 30, 2022

shanechko commented Nov 30, 2022

slashbeast commented Nov 30, 2022

corvus1 commented Nov 30, 2022

marillat commented Nov 30, 2022

marillat commented Nov 30, 2022

pitsi commented Nov 30, 2022

slashbeast commented Nov 28, 2022 •

edited

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pitsi commented Nov 29, 2022 •

edited

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marillat commented Nov 29, 2022 •

edited

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