https://bugs.kde.org/show_bug.cgi?id=386218
Bug ID: 386218 Summary: plasmashell segfaults several times a day Product: plasmashell Version: 5.10.5 Platform: Ubuntu Packages OS: Linux Status: UNCONFIRMED Keywords: drkonqi Severity: crash Priority: NOR Component: general Assignee: k...@davidedmundson.co.uk Reporter: p...@free.fr CC: plasma-b...@kde.org Target Milestone: 1.0 Application: plasmashell (5.10.5) Qt Version: 5.9.1 Frameworks Version: 5.38.0 Operating System: Linux 4.13.0-16-lowlatency x86_64 Distribution: Ubuntu 17.10 -- Information about the crash: this repeated segfault happens since I upgraded from kubuntu 1704 to 1710. It could be linked to something wanting to be displayed in the notification area of the taskbar. The crash can be reproduced every time. -- Backtrace: Application: Plasma (plasmashell), signal: Segmentation fault Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [Current thread is 1 (Thread 0x7f4c70e16900 (LWP 24126))] Thread 16 (Thread 0x7f4b148e8700 (LWP 12842)): #0 0x00007f4c6a45f901 in __GI___poll (fds=0x7f4b10004570, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f4c5eb8c451 in () at /usr/lib/x86_64-linux-gnu/libpulse.so.0 #2 0x00007f4c5eb7de10 in pa_mainloop_poll () at /usr/lib/x86_64-linux-gnu/libpulse.so.0 #3 0x00007f4c5eb7e4a0 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0 #4 0x00007f4c5eb7e530 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0 #5 0x00007f4c5eb8c399 in () at /usr/lib/x86_64-linux-gnu/libpulse.so.0 #6 0x00007f4c5ddd2ed8 in () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-10.0.so #7 0x00007f4c69cff7fc in start_thread (arg=0x7f4b148e8700) at pthread_create.c:465 #8 0x00007f4c6a46bb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 15 (Thread 0x7f4b38f46700 (LWP 24158)): #0 0x00007f4c6a45f901 in __GI___poll (fds=0x7f4b28002de0, nfds=1, timeout=772131) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f4c65092169 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f4c6509227c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f4c6ad9f49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007f4c6ad44e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f4c6ab643ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f4b3960d717 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so #7 0x00007f4c6ab6929d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f4c69cff7fc in start_thread (arg=0x7f4b38f46700) at pthread_create.c:465 #9 0x00007f4c6a46bb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 14 (Thread 0x7f4b3a4df700 (LWP 24151)): #0 0x00007f4c650d75d4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007f4c65091698 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f4c6509209b in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f4c6509227c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f4c6ad9f49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f4c6ad44e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f4c6ab643ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f4c6ab6929d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f4c69cff7fc in start_thread (arg=0x7f4b3a4df700) at pthread_create.c:465 #9 0x00007f4c6a46bb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 13 (Thread 0x7f4b3b314700 (LWP 24143)): #0 0x00007f4c65065a30 in g_ptr_array_set_size () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007f4c65091591 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f4c6509209b in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f4c6509227c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f4c6ad9f49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f4c6ad44e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f4c6ab643ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f4c6ab6929d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f4c69cff7fc in start_thread (arg=0x7f4b3b314700) at pthread_create.c:465 #9 0x00007f4c6a46bb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 12 (Thread 0x7f4b3bb15700 (LWP 24142)): #0 0x00007f4c69d06072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f4ba805acd4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 0x00007f4c69d06072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f4ba805ac80, cond=0x7f4ba805aca8) at pthread_cond_wait.c:502 #2 0x00007f4c69d06072 in __pthread_cond_wait (cond=0x7f4ba805aca8, mutex=0x7f4ba805ac80) at pthread_cond_wait.c:655 #3 0x00007f4b7e3dea9b in () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5 #4 0x00007f4b7e3decf9 in () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5 #5 0x00007f4b7f5afd21 in () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5 #6 0x00007f4c69cff7fc in start_thread (arg=0x7f4b3bb15700) at pthread_create.c:465 #7 0x00007f4c6a46bb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 11 (Thread 0x7f4b3c316700 (LWP 24141)): #0 0x00007f4c6ad9dbeb in QTimerInfoList::timerWait(timespec&) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #1 0x00007f4c6ad9f20e in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #2 0x00007f4c650916a8 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f4c6509209b in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f4c6509227c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007f4c6ad9f49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f4c6ad44e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f4c6ab643ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f4c6ab6929d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #9 0x00007f4c69cff7fc in start_thread (arg=0x7f4b3c316700) at pthread_create.c:465 #10 0x00007f4c6a46bb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 10 (Thread 0x7f4b7cb19700 (LWP 24140)): #0 0x00007f4c69d06072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f4b7ffe9540) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 0x00007f4c69d06072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f4b7ffe94f0, cond=0x7f4b7ffe9518) at pthread_cond_wait.c:502 #2 0x00007f4c69d06072 in __pthread_cond_wait (cond=0x7f4b7ffe9518, mutex=0x7f4b7ffe94f0) at pthread_cond_wait.c:655 #3 0x00007f4b7f5796b4 in () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5 #4 0x00007f4b7f5796d9 in () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5 #5 0x00007f4c69cff7fc in start_thread (arg=0x7f4b7cb19700) at pthread_create.c:465 #6 0x00007f4c6a46bb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 9 (Thread 0x7f4b85528700 (LWP 24138)): #0 0x00007f4c6a45f901 in __GI___poll (fds=0x7f4b80002de0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f4c65092169 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f4c6509227c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f4c6ad9f49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007f4c6ad44e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f4c6ab643ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f4c6ab6929d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f4c69cff7fc in start_thread (arg=0x7f4b85528700) at pthread_create.c:465 #8 0x00007f4c6a46bb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 8 (Thread 0x7f4baaaac700 (LWP 24135)): #0 0x00007f4c6ab60afc in QMutex::lock() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #1 0x00007f4c6ad9f3bd in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #2 0x00007f4c650916a8 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f4c6509209b in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f4c6509227c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007f4c6ad9f49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f4c6ad44e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f4c6ab643ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f4c6ab6929d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #9 0x00007f4c69cff7fc in start_thread (arg=0x7f4baaaac700) at pthread_create.c:465 #10 0x00007f4c6a46bb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 7 (Thread 0x7f4bab2ad700 (LWP 24134)): #0 0x00007f4c65092018 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007f4c6509227c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f4c6ad9f49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #3 0x00007f4c6ad44e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007f4c6ab643ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f4bab8ad3c5 in () at /usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so #6 0x00007f4c6ab6929d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f4c69cff7fc in start_thread (arg=0x7f4bab2ad700) at pthread_create.c:465 #8 0x00007f4c6a46bb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 6 (Thread 0x7f4c4a1d2700 (LWP 24131)): #0 0x00007f4c69d06072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f4c707fdfb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88 #1 0x00007f4c69d06072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f4c707fdf68, cond=0x7f4c707fdf90) at pthread_cond_wait.c:502 #2 0x00007f4c69d06072 in __pthread_cond_wait (cond=0x7f4c707fdf90, mutex=0x7f4c707fdf68) at pthread_cond_wait.c:655 #3 0x00007f4c70509bd4 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #4 0x00007f4c70509c19 in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #5 0x00007f4c69cff7fc in start_thread (arg=0x7f4c4a1d2700) at pthread_create.c:465 #6 0x00007f4c6a46bb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 5 (Thread 0x7f4c4bfff700 (LWP 24130)): #0 0x00007f4c6a45f901 in __GI___poll (fds=0x7f4c40002de0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f4c65092169 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f4c6509227c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f4c6ad9f49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007f4c6ad44e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f4c6ab643ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f4c6dcc4f45 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #7 0x00007f4c6ab6929d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f4c69cff7fc in start_thread (arg=0x7f4c4bfff700) at pthread_create.c:465 #9 0x00007f4c6a46bb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 4 (Thread 0x7f4c527c3700 (LWP 24129)): #0 0x00007f4c650916ed in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007f4c6509209b in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f4c6509227c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f4c6ad9f49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007f4c6ad44e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f4c6ab643ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f4c6dcc4f45 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #7 0x00007f4c6ab6929d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007f4c69cff7fc in start_thread (arg=0x7f4c527c3700) at pthread_create.c:465 #9 0x00007f4c6a46bb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 3 (Thread 0x7f4c53fff700 (LWP 24128)): #0 0x00007f4c650d75b9 in g_mutex_lock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #1 0x00007f4c65091164 in g_main_context_release () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f4c65092126 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007f4c6509227c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007f4c6ad9f49b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f4c6ad44e3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007f4c6ab643ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #7 0x00007f4c6b21be45 in () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5 #8 0x00007f4c6ab6929d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #9 0x00007f4c69cff7fc in start_thread (arg=0x7f4c53fff700) at pthread_create.c:465 #10 0x00007f4c6a46bb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 2 (Thread 0x7f4c59e67700 (LWP 24127)): #0 0x00007f4c6a45f901 in __GI___poll (fds=0x7f4c59e66bb8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f4c6f460747 in () at /usr/lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007f4c6f46253a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007f4c5bfaef09 in () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 #4 0x00007f4c6ab6929d in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007f4c69cff7fc in start_thread (arg=0x7f4c59e67700) at pthread_create.c:465 #6 0x00007f4c6a46bb0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 1 (Thread 0x7f4c70e16900 (LWP 24126)): [KCrash Handler] #6 0x00007f4c6a3e600b in tcache_get (tc_idx=<optimized out>) at malloc.c:2978 #7 0x00007f4c6a3e600b in __GI___libc_malloc (bytes=56) at malloc.c:3078 #8 0x00007f4c6a7c7458 in operator new(unsigned long) () at /usr/lib/x86_64-linux-gnu/libstdc++.so.6 #9 0x00007f4c6dc18f92 in QQmlOpenMetaObject::QQmlOpenMetaObject(QObject*, QMetaObject const*, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #10 0x00007f4c6dcf5b30 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #11 0x00007f4c6dcf80bf in QQmlListModel::get(int) const () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #12 0x00007f4c6dcffe40 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #13 0x00007f4c6dd003b5 in QQmlListModel::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #14 0x00007f4c6dc79119 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #15 0x00007f4c6dbf6de9 in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #16 0x00007f4c6dbf880e in () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #17 0x00007f4c6dbf94f9 in QV4::QObjectMethod::callInternal(QV4::CallData*, QV4::Scope&) const () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #18 0x00007f4c6dc1256d in QV4::Runtime::method_callProperty(QV4::ExecutionEngine*, int, QV4::CallData*) () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #19 0x00007f4bab87fba0 in () #20 0x0000000000000001 in () #21 0x0003200000000000 in () #22 0x00007f4c6ae34400 in QArrayData::shared_null () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #23 0x8647504ca974c100 in () #24 0x0000000000000000 in () Reported using DrKonqi -- You are receiving this mail because: You are watching all bug changes.