Bug 388103 - Restarting akonadi server with failing imap caused kmail to crash on startup
Summary: Restarting akonadi server with failing imap caused kmail to crash on startup
Status: RESOLVED WORKSFORME
Alias: None
Product: kmail2
Classification: Applications
Component: general (show other bugs)
Version: 5.2.3
Platform: Ubuntu Linux
: NOR crash
Target Milestone: ---
Assignee: kdepim bugs
URL:
Keywords: drkonqi
Depends on:
Blocks:
 
Reported: 2017-12-21 04:10 UTC by Con Kolivas
Modified: 2021-01-16 04:36 UTC (History)
0 users

See Also:
Latest Commit:
Version Fixed In:

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Description Con Kolivas 2017-12-21 04:10:14 UTC 
Application: kmail (5.2.3)

Qt Version: 5.7.1
Frameworks Version: 5.31.0
Operating System: Linux 4.14.3-ck1+ x86_64
Distribution: Ubuntu 17.04

-- Information about the crash:
- What I was doing when the application crashed:

My imap inbox was misbehaving - every email I deleted would reappear as new in the inbox. I tried restarting kmail and that did not help, then I restarted the akonadi server vial akonadi console and then no inbox was showing up in kmail. I quit kmail and restarted it and it crashed.

The crash can be reproduced sometimes.

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7ae0375940 (LWP 20818))]

Thread 25 (Thread 0x7f7a8a2a8700 (LWP 22317)):
#0  0x00007f7add4778ad in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7ad1674b30 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7ad1630042 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7ad1630514 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7ad163068c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f7addfb50bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7addd8cf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f7ad36396da in start_thread (arg=0x7f7a8a2a8700) at pthread_create.c:456
#10 0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 24 (Thread 0x7f7a937fe700 (LWP 22315)):
#0  0x00007f7ad1675ef4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f7ad1630696 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7addfb50bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7addd8cf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7ad36396da in start_thread (arg=0x7f7a937fe700) at pthread_create.c:456
#7  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 23 (Thread 0x7f7a89aa7700 (LWP 22313)):
#0  0x00007f7ad1675ef4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f7ad162f4be in g_main_context_acquire () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7ad1630425 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7ad163068c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7addfb50bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7addd8cf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7ad36396da in start_thread (arg=0x7f7a89aa7700) at pthread_create.c:456
#9  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 22 (Thread 0x7f7a892a6700 (LWP 22311)):
#0  0x00007f7add47bd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7ad1630576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7ad163068c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7addfb50bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7addd8cf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7ad36396da in start_thread (arg=0x7f7a892a6700) at pthread_create.c:456
#8  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 21 (Thread 0x7f7a93fff700 (LWP 22309)):
#0  0x00007f7add47bd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7ad1630576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7ad163068c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7addfb50bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7addd8cf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7ad36396da in start_thread (arg=0x7f7a93fff700) at pthread_create.c:456
#8  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 20 (Thread 0x7f7a233fe700 (LWP 22307)):
#0  0x00007f7add47bd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7ad1630576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7ad163068c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7addfb50bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7addd8cf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7ad36396da in start_thread (arg=0x7f7a233fe700) at pthread_create.c:456
#8  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 19 (Thread 0x7f7a219a8700 (LWP 22177)):
#0  0x00007f7ad162fa6d in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f7ad163049b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7ad163068c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7addfb50bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7addd8cf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7ad36396da in start_thread (arg=0x7f7a219a8700) at pthread_create.c:456
#8  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 18 (Thread 0x7f7a223b8700 (LWP 22173)):
#0  0x00007f7add4778ad in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7ad1674b30 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7ad1630042 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7ad1630514 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7ad163068c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f7addfb50bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7addd8cf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f7ad36396da in start_thread (arg=0x7f7a223b8700) at pthread_create.c:456
#10 0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 17 (Thread 0x7f7a9bfff700 (LWP 22069)):
#0  0x00007f7ad1675ef4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f7ad162fb70 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7ad163049b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7ad163068c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7addfb50bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7addd8cf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7ad36396da in start_thread (arg=0x7f7a9bfff700) at pthread_create.c:456
#9  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 16 (Thread 0x7f7ab0ac8700 (LWP 22060)):
#0  0x00007f7add47bd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7ad1630576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7ad163068c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7addfb50bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7addd8cf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7ad36396da in start_thread (arg=0x7f7ab0ac8700) at pthread_create.c:456
#8  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 15 (Thread 0x7f7a20b35700 (LWP 20877)):
#0  0x00007f7ad162fd07 in g_main_context_query () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f7ad16304e8 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7ad163068c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7addfb50bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7addd8cf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7ad36396da in start_thread (arg=0x7f7a20b35700) at pthread_create.c:456
#8  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 14 (Thread 0x7f7a23fff700 (LWP 20854)):
#0  0x00007f7ad363f510 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7ace0bf8d3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f7ace3e7641 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f7ad36396da in start_thread (arg=0x7f7a23fff700) at pthread_create.c:456
#4  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 13 (Thread 0x7f7a408b2700 (LWP 20853)):
#0  0x00007f7ad363f510 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7ace0bf8d3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f7ace3e7641 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f7ad36396da in start_thread (arg=0x7f7a408b2700) at pthread_create.c:456
#4  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 12 (Thread 0x7f7a410b3700 (LWP 20852)):
#0  0x00007f7ad363f510 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7ace0bf8d3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f7ace3e7641 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f7ad36396da in start_thread (arg=0x7f7a410b3700) at pthread_create.c:456
#4  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 11 (Thread 0x7f7a418b4700 (LWP 20851)):
#0  0x00007f7ad363f510 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7ace0bf8d3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f7ace3e7641 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f7ad36396da in start_thread (arg=0x7f7a418b4700) at pthread_create.c:456
#4  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 10 (Thread 0x7f7a420b5700 (LWP 20850)):
#0  0x00007f7ad363f510 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7ace0bf8d3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f7ace3e7641 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f7ad36396da in start_thread (arg=0x7f7a420b5700) at pthread_create.c:456
#4  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 9 (Thread 0x7f7a428b6700 (LWP 20849)):
#0  0x00007f7ad363f510 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7ace0bf8d3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f7ace3e7641 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f7ad36396da in start_thread (arg=0x7f7a428b6700) at pthread_create.c:456
#4  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 8 (Thread 0x7f7a430b7700 (LWP 20848)):
#0  0x00007f7ad363f510 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7ace0be7b1 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f7ace3e7641 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f7ad36396da in start_thread (arg=0x7f7a430b7700) at pthread_create.c:456
#4  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 7 (Thread 0x7f7a92ffd700 (LWP 20835)):
#0  0x00007f7ad363f510 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7ace3b694b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#2  0x00007f7ace3b6989 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebKit.so.5
#3  0x00007f7ad36396da in start_thread (arg=0x7f7a92ffd700) at pthread_create.c:456
#4  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 6 (Thread 0x7f7ab12c9700 (LWP 20825)):
#0  0x00007f7add47bd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7ad1630576 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7ad163068c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7addfb50bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7addd8cf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7ad36396da in start_thread (arg=0x7f7ab12c9700) at pthread_create.c:456
#8  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 5 (Thread 0x7f7ab1aca700 (LWP 20823)):
#0  0x00007f7ad1675ed9 in g_mutex_lock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f7ad162fa79 in g_main_context_prepare () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7ad163049b in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7ad163068c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7addfb50bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7addd8cf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7ad36396da in start_thread (arg=0x7f7ab1aca700) at pthread_create.c:456
#9  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 4 (Thread 0x7f7ab2957700 (LWP 20822)):
#0  0x00007f7ad1675ef4 in g_mutex_unlock () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f7ad1630696 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7addfb50bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7addd8cf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7ad36396da in start_thread (arg=0x7f7ab2957700) at pthread_create.c:456
#7  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 3 (Thread 0x7f7ab3fff700 (LWP 20821)):
#0  0x00007f7addd89139 in QMutex::unlock() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f7addfb49a5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f7ad162ff89 in g_main_context_check () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7ad1630514 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7ad163068c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f7addfb50bb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7addd8cf83 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7adc3db5d5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f7ad36396da in start_thread (arg=0x7f7ab3fff700) at pthread_create.c:456
#11 0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 2 (Thread 0x7f7ab9c57700 (LWP 20820)):
#0  0x00007f7add47bd8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7ad0519c62 in poll (__timeout=-1, __nfds=1, __fds=0x7f7ab9c56b80) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x00007f7ad0519c62 in _xcb_conn_wait (c=c@entry=0x55796952b440, cond=cond@entry=0x55796952b480, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:459
#3  0x00007f7ad051b8d7 in xcb_wait_for_event (c=0x55796952b440) at ../../src/xcb_in.c:693
#4  0x00007f7abc1baef9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#5  0x00007f7addd91c38 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7ad36396da in start_thread (arg=0x7f7ab9c57700) at pthread_create.c:456
#7  0x00007f7add487d7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105

Thread 1 (Thread 0x7f7ae0375940 (LWP 20818)):
[KCrash Handler]
#6  0x00007f7adde120cc in QtSharedPointer::ExternalRefCountData::getAndRef(QObject const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7addf99220 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7addf99393 in QTimer::singleShotImpl(int, Qt::TimerType, QObject const*, QtPrivate::QSlotObjectBase*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f7adfc99c18 in  () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#10 0x00007f7adfca2c4d in KMKernel::toggleSystemTray() () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#11 0x00007f7adfce0e0b in KMMainWidget::readConfig() () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#12 0x00007f7adfce14f1 in KMMainWidget::KMMainWidget(QWidget*, KXMLGUIClient*, KActionCollection*, QExplicitlySharedDataPointer<KSharedConfig>) () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#13 0x00007f7adfc8e10a in KMMainWin::KMMainWin(QWidget*) () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#14 0x00007f7adfc9eead in KMKernel::openReader(bool) () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#15 0x00007f7adfca8ab4 in KMKernel::action(bool, bool, QString const&, QString const&, QString const&, QString const&, QString const&, QUrl const&, QList<QUrl> const&, QStringList const&, QString const&, QString const&) () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#16 0x00007f7adfca9fed in KMKernel::handleCommandLine(bool, QStringList const&, QString const&) () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#17 0x000055796834c3d1 in  ()
#18 0x00007f7ae009a07e in KontactInterface::PimUniqueApplication::newInstance(QByteArray const&, QStringList const&, QString const&) () at /usr/lib/x86_64-linux-gnu/libKF5KontactInterface.so.5
#19 0x00007f7ae009b0d2 in  () at /usr/lib/x86_64-linux-gnu/libKF5KontactInterface.so.5
#20 0x00007f7ae009b483 in KontactInterface::PimUniqueApplication::qt_metacall(QMetaObject::Call, int, void**) () at /usr/lib/x86_64-linux-gnu/libKF5KontactInterface.so.5
#21 0x00007f7adc3e5570 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#22 0x00007f7adc3e9392 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#23 0x00007f7adc3e994c in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#24 0x00007f7adc3ec35e in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#25 0x00007f7addf8d639 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f7ade4a09a4 in QGuiApplication::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#27 0x00007f7adf12110f in QApplication::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f7adf11b35c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f7adf122b21 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f7addf60c00 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f7addf6339d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f7addfb4c93 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f7ad1630377 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f7ad16305e0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f7ad163068c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f7addfb509f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f7addf5ebea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f7addf6733c in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x000055796834b8af in  ()
#40 0x00007f7add39f3f1 in __libc_start_main (main=0x55796834a7e0, argc=3, argv=0x7ffeb2b74c08, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffeb2b74bf8) at ../csu/libc-start.c:291
#41 0x000055796834bf9a in _start ()

Reported using DrKonqi
Comment 1 Justin Zobel 2020-12-17 05:33:46 UTC 
Thank you for the crash report.

As it has been a while since this was reported, can you please test and confirm if this issue is still occurring or if this bug report can be marked as resolved.

I have set the bug status to "needsinfo" pending your response, please change back to "reported" or "resolved/worksforme" when you respond, thank you.
Comment 2 Bug Janitor Service 2021-01-01 04:37:48 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 3 Bug Janitor Service 2021-01-16 04:36:42 UTC 
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!