386533 2017-11-04 18:48:21 +0000 System Settings Sporadically Crashes 2018-03-22 11:23:32 +0000 1 1 2 Applications systemsettings general 5.11.2 Ubuntu Linux RESOLVED FIXED drkonqi NOR crash --- 0 yo plasma-bugs-null simonandric5 https://commits.kde.org/kamera/5bc0682c3a1e80d1a35691896816f2475eb3905f 0 oldest_to_newest 1709698 0 yo 2017-11-04 18:48:21 +0000 Application: systemsettings5 (5.11.2) Qt Version: 5.9.1 Frameworks Version: 5.39.0 Operating System: Linux 4.13.0-16-lowlatency x86_64 Distribution: Ubuntu 17.10 -- Information about the crash: - What I was doing when the application crashed: -- I went from one settings pane to another -- From Compositor to Network Settings -- Backtrace: Application: System Settings (systemsettings5), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0x7f5adb4ddd80 (LWP 16825))] Thread 9 (Thread 0x7f5a9cc28700 (LWP 16947)): #0 0x00007f5ad715a901 in __GI___poll (fds=0x7f5a7c000b10, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f5ad1091169 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f5ad109127c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f5ad7a9a49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007f5ad7a3fe3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f5ad785f3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f5a5a9f9717 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so #7 0x00007f5ad786429d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f5ad2f4f7fc in start_thread (arg=0x7f5a9cc28700) at pthread_create.c:465 #9 0x00007f5ad7166b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 8 (Thread 0x7f5a8add4700 (LWP 16904)): #0 0x00007f5ad715a901 in __GI___poll (fds=0x7f5a740ec790, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f5ad1091169 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f5ad109127c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f5ad7a9a49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007f5ad7a3fe3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f5ad785f3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f5ad5913f45 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #7 0x00007f5ad786429d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f5ad2f4f7fc in start_thread (arg=0x7f5a8add4700) at pthread_create.c:465 #9 0x00007f5ad7166b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 7 (Thread 0x7f5a9eacb700 (LWP 16851)): #0 0x00007f5ad715a901 in __GI___poll (fds=0x563dce916d70, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f5ad1091169 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f5ad1091502 in g_main_loop_run () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f5aa004db26 in () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 #4 0x00007f5ad10b8645 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007f5ad2f4f7fc in start_thread (arg=0x7f5a9eacb700) at pthread_create.c:465 #6 0x00007f5ad7166b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 6 (Thread 0x7f5a9f2cc700 (LWP 16850)): #0 0x00007f5ad108e092 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007f5ad10905db in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f5ad109109b in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f5ad109127c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f5ad10912c1 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007f5ad10b8645 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #6 0x00007f5ad2f4f7fc in start_thread (arg=0x7f5a9f2cc700) at pthread_create.c:465 #7 0x00007f5ad7166b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 5 (Thread 0x7f5aac06a700 (LWP 16831)): #0 0x00007f5ad108e0bf in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007f5ad10905db in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f5ad109109b in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f5ad109127c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f5ad7a9a49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f5ad7a3fe3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f5ad785f3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f5ad5913f45 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #8 0x00007f5ad786429d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #9 0x00007f5ad2f4f7fc in start_thread (arg=0x7f5aac06a700) at pthread_create.c:465 #10 0x00007f5ad7166b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 4 (Thread 0x7f5ab5b74700 (LWP 16830)): #0 0x00007f5ad10d65b9 in g_mutex_lock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007f5ad109112e in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f5ad109127c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f5ad7a9a49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007f5ad7a3fe3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f5ad785f3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f5ad5913f45 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #7 0x00007f5ad786429d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f5ad2f4f7fc in start_thread (arg=0x7f5ab5b74700) at pthread_create.c:465 #9 0x00007f5ad7166b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 3 (Thread 0x7f5abe9cf700 (LWP 16827)): #0 0x00007f5ad7155ffd in __GI___libc_read (fd=7, buf=0x7f5abe9cea60, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26 #1 0x00007f5ad10d5280 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f5ad1090c4b in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f5ad1091110 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f5ad109127c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007f5ad7a9a49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f5ad7a3fe3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f5ad785f3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f5ad7f16e45 in () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5 #9 0x00007f5ad786429d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #10 0x00007f5ad2f4f7fc in start_thread (arg=0x7f5abe9cf700) at pthread_create.c:465 #11 0x00007f5ad7166b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 2 (Thread 0x7f5ac7a35700 (LWP 16826)): #0 0x00007f5ad715a901 in __GI___poll (fds=0x7f5ac7a34bb8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f5ad37c9747 in () at /usr/lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007f5ad37cb53a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007f5ac9f8ff09 in () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 #4 0x00007f5ad786429d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f5ad2f4f7fc in start_thread (arg=0x7f5ac7a35700) at pthread_create.c:465 #6 0x00007f5ad7166b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 1 (Thread 0x7f5adb4ddd80 (LWP 16825)): [KCrash Handler] #6 0x00007f5ad91f2e37 in QStandardItemModel::clear() () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #7 0x00007f5a59ef648f in () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kcm_kamera.so #8 0x00007f5a59ef7d98 in () at /usr/lib/x86_64-linux-gnu/qt5/plugins/kcm_kamera.so #9 0x00007f5ada513101 in () at /usr/lib/x86_64-linux-gnu/libKF5ConfigWidgets.so.5 #10 0x00007f5ad7a71452 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #11 0x00007f5ad967a4d3 in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #12 0x00007f5ad963946c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #13 0x00007f5ad9640d34 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #14 0x00007f5ad7a41de8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #15 0x00007f5ad7a4455d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #16 0x00007f5ad7a9ae53 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #17 0x00007f5ad1090fb7 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #18 0x00007f5ad10911f0 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #19 0x00007f5ad109127c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #20 0x00007f5ad7a9a47f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #21 0x00007f5ad7a3fe3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #22 0x00007f5ad7a48da4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #23 0x0000563dc78ffdcf in () #24 0x00007f5ad70731c1 in __libc_start_main (main=0x563dc78ff9d0, argc=1, argv=0x7ffe73ff5128, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe73ff5118) at ../csu/libc-start.c:308 #25 0x0000563dc78ffe5a in _start () Reported using DrKonqi 1713096 1 cfeck 2017-11-23 23:08:54 +0000 *** This bug has been marked as a duplicate of bug 305061 *** 1739694 2 kde 2018-03-22 11:23:32 +0000 Git commit 5bc0682c3a1e80d1a35691896816f2475eb3905f by David Edmundson. Committed on 22/03/2018 at 01:00. Pushed by davidedmundson into branch 'master'. Fix dangly pointer if gp_context_new fails Summary: m_deviceModel is typically created in the constructor, except in the code path where m_context fails. At this point we have a dangly pointer that the rest of the code uses uncondiationally Safer code path is to just create it earlier, we want this object in the non-error case anyway Test Plan: Purely code reading I've not got a fancy camera Reviewers: #plasma Differential Revision: https://phabricator.kde.org/D11564 M +2 -1 kcontrol/kamera.cpp https://commits.kde.org/kamera/5bc0682c3a1e80d1a35691896816f2475eb3905f