*** This bug is a duplicate of bug 1630765 ***
https://bugs.launchpad.net/bugs/1630765
** This bug has been marked a duplicate of bug 1630765
webbrowser-app crashed with SIGSEGV in
QNetworkConfiguration::~QNetworkConfiguration()
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https://bugs.launchpad.net/bugs/1630941
Title:
Crash at shutdown in ~QNetworkConfiguration
Status in qtbase-opensource-src package in Ubuntu:
New
Bug description:
After the recent landing for bug 1618590 the Ubuntu Download Manager
tests frequently crash at shutdown with the following stack trace:
Thread 1 "test_mms_downlo" received signal SIGSEGV, Segmentation fault.
0x00007ffff7201b23 in QNetworkConfiguration::~QNetworkConfiguration() () from
/usr/lib/x86_64-linux-gnu/libQt5Network.so.5
(gdb) bt
#0 0x00007ffff7201b23 in QNetworkConfiguration::~QNetworkConfiguration() ()
from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#1 0x00007ffff6f31169 in QMetaType::destroy(int, void*) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007ffff6f46bf9 in QMetaCallEvent::~QMetaCallEvent() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007ffff6f46c79 in QMetaCallEvent::~QMetaCallEvent() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007ffff6f1c9a8 in QCoreApplicationPrivate::cleanupThreadData() ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007ffff6f1ca8a in QCoreApplicationPrivate::~QCoreApplicationPrivate()
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007ffff6f1cba9 in QCoreApplicationPrivate::~QCoreApplicationPrivate()
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x00007ffff6f510dc in QObject::~QObject() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x00007ffff6f1ed12 in QCoreApplication::~QCoreApplication() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9 0x0000000000449bbc in main (argc=1, argv=<optimised out>) at
/home/mike/src/udm/fix-1628635/tests/downloads/daemon/test_mms_download.cpp:97
This commit seems especially relevant: https://codereview.qt-
project.org/#/c/172173/
Neither this test, nor UDM itself make any explicit use of
QPluginLoader, so this is unlikely to be a case of UDM incorrectly
unloading a plugin itself.
To reproduce simply run UDM's test_mms_download test a number of times
(crashes only occur intermittently).
When tested with a silo without the three patches added for bug
1618590 this crash no-longer occurs.
A similar crash appears to be happening in webbrowser-app as well:
https://bugs.launchpad.net/ubuntu/+source/webbrowser-app/+bug/1630765
Possibly another similar crash in ~QNetworkSession:
https://bugs.launchpad.net/ubuntu/+source/webbrowser-app/+bug/1630510
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/qtbase-opensource-src/+bug/1630941/+subscriptions
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