Bug 395910 - KMail segfaults upon exit
Summary: KMail segfaults upon exit
Status: RESOLVED DUPLICATE of bug 387177
Alias: None
Product: kmail2
Classification: Applications
Component: general (show other bugs)
Version: 5.7.3
Platform: Ubuntu Linux
: NOR crash (vote)
Target Milestone: ---
Assignee: kdepim bugs
URL:
Keywords: drkonqi
: 398530 (view as bug list)
Depends on:
Blocks:
 
Reported: 2018-06-27 02:29 UTC by Fritigern
Modified: 2018-12-06 21:51 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed In:


Attachments
New crash information added by DrKonqi (37.45 KB, text/plain)
2018-12-01 20:51 UTC, Dennis Schridde
Details

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Description Fritigern 2018-06-27 02:29:43 UTC
Application: kmail (5.7.3)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-23-lowlatency x86_64
Distribution: Ubuntu 18.04 LTS

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

I exited the application by right-clicking the system tray icon and choosing "Quit".

The crash can be reproduced every time.

-- 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 0x7fb8cd1c9b80 (LWP 7498))]

Thread 26 (Thread 0x7fb85effd700 (LWP 9411)):
#0  0x00007fb8bfbbb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x564e21c15ee8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb8bfbbb9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x564e21c15e98, cond=0x564e21c15ec0) at pthread_cond_wait.c:502
#2  0x00007fb8bfbbb9f3 in __pthread_cond_wait (cond=0x564e21c15ec0, mutex=0x564e21c15e98) at pthread_cond_wait.c:655
#3  0x00007fb8b4a5cc95 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb8b4a5d177 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb8b4a5df11 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb8bfbb56db in start_thread (arg=0x7fb85effd700) at pthread_create.c:463
#8  0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7fb7777a3700 (LWP 7562)):
#0  0x00007fb8bfbbb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x564e21c15eec) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb8bfbbb9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x564e21c15e98, cond=0x564e21c15ec0) at pthread_cond_wait.c:502
#2  0x00007fb8bfbbb9f3 in __pthread_cond_wait (cond=0x564e21c15ec0, mutex=0x564e21c15e98) at pthread_cond_wait.c:655
#3  0x00007fb8b4a5cc95 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb8b4a5d177 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb8b4a5df11 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb8bfbb56db in start_thread (arg=0x7fb7777a3700) at pthread_create.c:463
#8  0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7fb7fd0eb700 (LWP 7561)):
#0  0x00007fb8bfbbb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fb8b1327fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb8bfbbb9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb8b1327f68, cond=0x7fb8b1327f90) at pthread_cond_wait.c:502
#2  0x00007fb8bfbbb9f3 in __pthread_cond_wait (cond=0x7fb8b1327f90, mutex=0x7fb8b1327f68) at pthread_cond_wait.c:655
#3  0x00007fb8b10315f4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007fb8b1031639 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007fb8bfbb56db in start_thread (arg=0x7fb7fd0eb700) at pthread_create.c:463
#6  0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7fb81effd700 (LWP 7533)):
#0  0x00007fb8ca2b40b4 in __GI___libc_read (fd=71, buf=0x7fb81effc85e, nbytes=10) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007fb8a4fe2ff1 in pa_read () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#2  0x00007fb8ad9d39fe in pa_mainloop_prepare () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fb8ad9d4470 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fb8ad9d4530 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fb8ad9e2399 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fb8a50122a8 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#7  0x00007fb8bfbb56db in start_thread (arg=0x7fb81effd700) at pthread_create.c:463
#8  0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7fb81f7fe700 (LWP 7532)):
#0  0x00007fb8ca2d46ac in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fb8ca2d6474 in ___fprintf_chk (fp=0x7fb8ca5918b0 <_IO_stdfile_2_lock>, flag=1, format=0x7fb8aba626a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fb8aba4a9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007fb8aba4ab44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007fb8aba4c46c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007fb8aba42114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007fb8b4a2db0d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb8b4a29da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb8b4a4677b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb8b4a5e4d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fb8bfbb56db in start_thread (arg=0x7fb81f7fe700) at pthread_create.c:463
#12 0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7fb81ffff700 (LWP 7531)):
#0  0x00007fb8bfbbb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fb81fffe738) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb8bfbbb9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb81fffe6e8, cond=0x7fb81fffe710) at pthread_cond_wait.c:502
#2  0x00007fb8bfbbb9f3 in __pthread_cond_wait (cond=0x7fb81fffe710, mutex=0x7fb81fffe6e8) at pthread_cond_wait.c:655
#3  0x00007fb8b4a52999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb8b4a529c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb8b4a2d4db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb8b4a29da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb8b4a4677b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb8b4a5e4d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb8bfbb56db in start_thread (arg=0x7fb81ffff700) at pthread_create.c:463
#11 0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7fb83cff9700 (LWP 7530)):
#0  0x00007fb8bfbbbed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7fb83cff85d0, expected=0, futex_word=0x7fb83cff8758) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007fb8bfbbbed9 in __pthread_cond_wait_common (abstime=0x7fb83cff8670, mutex=0x7fb83cff8708, cond=0x7fb83cff8730) at pthread_cond_wait.c:533
#2  0x00007fb8bfbbbed9 in __pthread_cond_timedwait (cond=0x7fb83cff8730, mutex=0x7fb83cff8708, abstime=0x7fb83cff8670) at pthread_cond_wait.c:667
#3  0x00007fb8b4a8b652 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb8b4a5291e in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb8b4a2d52b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb8b4a29da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb8b4a4677b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb8b4a5e4d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb8bfbb56db in start_thread (arg=0x7fb83cff9700) at pthread_create.c:463
#11 0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7fb83d7fa700 (LWP 7529)):
#0  0x00007fb8bfbbb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x564e21caffb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb8bfbbb9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x564e21cafef8, cond=0x564e21caff90) at pthread_cond_wait.c:502
#2  0x00007fb8bfbbb9f3 in __pthread_cond_wait (cond=0x564e21caff90, mutex=0x564e21cafef8) at pthread_cond_wait.c:655
#3  0x00007fb8b51e4060 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb8b4a5df11 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb8bfbb56db in start_thread (arg=0x7fb83d7fa700) at pthread_create.c:463
#7  0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7fb83dffb700 (LWP 7528)):
#0  0x00007fb8bfbbb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x564e21c15ee8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb8bfbbb9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x564e21c15e98, cond=0x564e21c15ec0) at pthread_cond_wait.c:502
#2  0x00007fb8bfbbb9f3 in __pthread_cond_wait (cond=0x564e21c15ec0, mutex=0x564e21c15e98) at pthread_cond_wait.c:655
#3  0x00007fb8b4a5cc95 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb8b4a5d177 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb8b4a5df11 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb8bfbb56db in start_thread (arg=0x7fb83dffb700) at pthread_create.c:463
#8  0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7fb83e7fc700 (LWP 7527)):
#0  0x00007fb8bfbbb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fb83e7fb738) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb8bfbbb9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb83e7fb6e8, cond=0x7fb83e7fb710) at pthread_cond_wait.c:502
#2  0x00007fb8bfbbb9f3 in __pthread_cond_wait (cond=0x7fb83e7fb710, mutex=0x7fb83e7fb6e8) at pthread_cond_wait.c:655
#3  0x00007fb8b4a52999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb8b4a529c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb8b4a2d4db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb8b4a29da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb8b4a4677b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb8b4a5e4d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb8bfbb56db in start_thread (arg=0x7fb83e7fc700) at pthread_create.c:463
#11 0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7fb83effd700 (LWP 7526)):
#0  0x00007fb8ca2d46ac in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fb8ca2d6474 in ___fprintf_chk (fp=0x7fb8ca5918b0 <_IO_stdfile_2_lock>, flag=1, format=0x7fb8aba626a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fb8aba4a9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007fb8aba4ab44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007fb8aba4c46c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007fb8aba42114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007fb8b4a2dab9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb8b4a29da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb8b4a4677b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb8b42e4978 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb8b42e4f2b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fb8b4a5e588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007fb8bfbb56db in start_thread (arg=0x7fb83effd700) at pthread_create.c:463
#14 0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7fb83f7fe700 (LWP 7525)):
#0  0x00007fb8bfbbb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fb83f7fd358) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb8bfbbb9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb83f7fd308, cond=0x7fb83f7fd330) at pthread_cond_wait.c:502
#2  0x00007fb8bfbbb9f3 in __pthread_cond_wait (cond=0x7fb83f7fd330, mutex=0x7fb83f7fd308) at pthread_cond_wait.c:655
#3  0x00007fb8b4a52999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb8b4a529c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb8b4a2d4db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb8b4a29da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb8b4a4677b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb8b42e48c8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb8b42e4f1b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb8b4a5e588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fb8bfbb56db in start_thread (arg=0x7fb83f7fe700) at pthread_create.c:463
#13 0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7fb83ffff700 (LWP 7524)):
#0  0x00007fb8bfbbb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fb83fffe358) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb8bfbbb9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb83fffe308, cond=0x7fb83fffe330) at pthread_cond_wait.c:502
#2  0x00007fb8bfbbb9f3 in __pthread_cond_wait (cond=0x7fb83fffe330, mutex=0x7fb83fffe308) at pthread_cond_wait.c:655
#3  0x00007fb8b4a52999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb8b4a529c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb8b4a2d4db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb8b4a29da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb8b4a4677b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb8b42e4818 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb8b42e4f0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb8b4a5e588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fb8bfbb56db in start_thread (arg=0x7fb83ffff700) at pthread_create.c:463
#13 0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fb85cff9700 (LWP 7523)):
#0  0x00007fb8bfbbb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fb85cff8358) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb8bfbbb9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb85cff8308, cond=0x7fb85cff8330) at pthread_cond_wait.c:502
#2  0x00007fb8bfbbb9f3 in __pthread_cond_wait (cond=0x7fb85cff8330, mutex=0x7fb85cff8308) at pthread_cond_wait.c:655
#3  0x00007fb8b4a52999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb8b4a529c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb8b4a2d4db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb8b4a29da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb8b4a4677b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb8b42e4768 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb8b42e4efb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb8b4a5e588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fb8bfbb56db in start_thread (arg=0x7fb85cff9700) at pthread_create.c:463
#13 0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fb85d7fa700 (LWP 7522)):
#0  0x00007fb8ca2b4187 in __GI___libc_write (fd=2, buf=0x7fb85d7f66e0, nbytes=39) at ../sysdeps/unix/sysv/linux/write.c:27
#1  0x00007fb8ca22f1bd in _IO_new_file_write (f=0x7fb8ca590680 <_IO_2_1_stderr_>, data=0x7fb85d7f66e0, n=39) at fileops.c:1203
#2  0x00007fb8ca22fb2f in new_do_write (to_do=<optimized out>, data=0x7fb85d7f66e0 "[warn] epoll_wait: Bad file descriptor\n", fp=0x7fb8ca590680 <_IO_2_1_stderr_>) at fileops.c:457
#3  0x00007fb8ca22fb2f in _IO_new_file_xsputn (f=0x7fb8ca590680 <_IO_2_1_stderr_>, data=<optimized out>, n=39) at fileops.c:1277
#4  0x00007fb8ca202707 in buffered_vfprintf (s=s@entry=0x7fb8ca590680 <_IO_2_1_stderr_>, format=format@entry=0x7fb8aba626a8 "[%s] %s\n", args=args@entry=0x7fb85d7f8ca0) at vfprintf.c:2350
#5  0x00007fb8ca1ff726 in _IO_vfprintf_internal (s=s@entry=0x7fb8ca590680 <_IO_2_1_stderr_>, format=0x7fb8aba626a8 "[%s] %s\n", ap=ap@entry=0x7fb85d7f8ca0) at vfprintf.c:1301
#6  0x00007fb8ca2d64c6 in ___fprintf_chk (fp=0x7fb8ca590680 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:35
#7  0x00007fb8aba4a9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007fb8aba4ab44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#9  0x00007fb8aba4c46c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#10 0x00007fb8aba42114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#11 0x00007fb8b4a2db0d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fb8b4a29da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007fb8b4a4677b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007fb8b42e46b8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007fb8b42e4eeb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007fb8b4a5e588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#17 0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#18 0x00007fb8bfbb56db in start_thread (arg=0x7fb85d7fa700) at pthread_create.c:463
#19 0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fb85dffb700 (LWP 7521)):
#0  0x00007fb8bfbbb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fb85dffa358) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb8bfbbb9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb85dffa308, cond=0x7fb85dffa330) at pthread_cond_wait.c:502
#2  0x00007fb8bfbbb9f3 in __pthread_cond_wait (cond=0x7fb85dffa330, mutex=0x7fb85dffa308) at pthread_cond_wait.c:655
#3  0x00007fb8b4a52999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb8b4a529c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb8b4a2d4db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb8b4a29da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb8b4a4677b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb8b42e4608 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb8b42e4edb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb8b4a5e588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fb8bfbb56db in start_thread (arg=0x7fb85dffb700) at pthread_create.c:463
#13 0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fb85f7fe700 (LWP 7518)):
#0  0x00007fb8bfbbb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fb85f7fd738) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb8bfbbb9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb85f7fd6e8, cond=0x7fb85f7fd710) at pthread_cond_wait.c:502
#2  0x00007fb8bfbbb9f3 in __pthread_cond_wait (cond=0x7fb85f7fd710, mutex=0x7fb85f7fd6e8) at pthread_cond_wait.c:655
#3  0x00007fb8b4a52999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb8b4a529c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb8b4a2d4db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb8b4a29da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb8b4a4677b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb8b4a5e4d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb8bfbb56db in start_thread (arg=0x7fb85f7fe700) at pthread_create.c:463
#11 0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fb85ffff700 (LWP 7517)):
#0  0x00007fb8ca2d46ac in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fb8ca2d6474 in ___fprintf_chk (fp=0x7fb8ca5918b0 <_IO_stdfile_2_lock>, flag=1, format=0x7fb8aba626a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fb8aba4a9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007fb8aba4ab44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007fb8aba4c46c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007fb8aba42114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007fb8b4a2dab9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb8b4a29da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb8b4a4677b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb8b4a5e4d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb8b4a5a5eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fb8bfbb56db in start_thread (arg=0x7fb85ffff700) at pthread_create.c:463
#12 0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fb86e77e700 (LWP 7510)):
#0  0x00007fb8bfbbb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x564e21bf62e0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb8bfbbb9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x564e21bf6290, cond=0x564e21bf62b8) at pthread_cond_wait.c:502
#2  0x00007fb8bfbbb9f3 in __pthread_cond_wait (cond=0x564e21bf62b8, mutex=0x564e21bf6290) at pthread_cond_wait.c:655
#3  0x00007fb8ca9d059b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fb8ca9c8c0b in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb86f76c80c in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/texttospeech/libqttexttospeech_flite.so
#6  0x00007fb8ca9cf16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb8bfbb56db in start_thread (arg=0x7fb86e77e700) at pthread_create.c:463
#8  0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fb8789a9700 (LWP 7507)):
#0  0x00007fb8ca2b8bf9 in __GI___poll (fds=0x7fb8700049b0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb8bdf60439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb8bdf6054c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb8cac0690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fb8cabab9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb8ca9ca22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb8ca9cf16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb8bfbb56db in start_thread (arg=0x7fb8789a9700) at pthread_create.c:463
#8  0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fb889ded700 (LWP 7504)):
#0  0x00007fb8ca2b8bf9 in __GI___poll (fds=0x7fb874026850, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb8bdf60439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb8bdf6054c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb8cac0690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fb8cabab9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb8ca9ca22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb8ca9cf16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb8bfbb56db in start_thread (arg=0x7fb889ded700) at pthread_create.c:463
#8  0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fb88a5ee700 (LWP 7503)):
#0  0x00007fb8ca2b8bf9 in __GI___poll (fds=0x7fb880003ce0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb8bdf60439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb8bdf6054c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb8cac0690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fb8cabab9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb8ca9ca22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb8ca9cf16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb8bfbb56db in start_thread (arg=0x7fb88a5ee700) at pthread_create.c:463
#8  0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fb88b48d700 (LWP 7502)):
#0  0x00007fb8bdfa5cf4 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb8bdf5f327 in g_main_context_acquire () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb8bdf602f5 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb8bdf6054c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb8cac0690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb8cabab9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb8ca9ca22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb8ca9cf16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb8bfbb56db in start_thread (arg=0x7fb88b48d700) at pthread_create.c:463
#9  0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fb88c69e700 (LWP 7501)):
#0  0x00007fb8ca2b8bf9 in __GI___poll (fds=0x7fb88402a0b0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb8bdf60439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb8bdf6054c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb8cac0690b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fb8cabab9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb8ca9ca22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb8c91fed45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fb8ca9cf16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb8bfbb56db in start_thread (arg=0x7fb88c69e700) at pthread_create.c:463
#9  0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fb894ead700 (LWP 7500)):
#0  0x00007fb8ca2b8bf9 in __GI___poll (fds=0x7fb894eac928, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb8bd38e747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fb8bd39036a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fb896ba82a9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fb8ca9cf16d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb8bfbb56db in start_thread (arg=0x7fb894ead700) at pthread_create.c:463
#6  0x00007fb8ca2c588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fb8cd1c9b80 (LWP 7498)):
[KCrash Handler]
#6  0x00007fb8cba808a0 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#7  0x00007fb8cba7c4e8 in QMainWindow::statusBar() const () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007fb8cca5e4b9 in KMMainWin::displayStatusMessage(QString const&) () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#9  0x00007fb8cabdc6cf in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fb8c14a4f32 in KPIM::BroadcastStatus::statusMsg(QString const&) () at /usr/lib/x86_64-linux-gnu/libKF5Libkdepim.so.5abi2
#11 0x00007fb8cca919d4 in KMMainWidget::showMessageActivities(QString const&) () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#12 0x00007fb8cca955f1 in KMMainWidget::itemsFetchDone(KJob*) () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#13 0x00007fb8cabdc6cf in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fb8cc057fdc in KJob::result(KJob*, KJob::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#15 0x00007fb8cc058b11 in KJob::finishJob(bool) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#16 0x00007fb8cc058b72 in KJob::kill(KJob::KillVerbosity) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#17 0x00007fb8c428a021 in Akonadi::Session::clear() () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi1
#18 0x00007fb8c428a0d7 in Akonadi::Session::~Session() () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi1
#19 0x00007fb8c428a0f9 in Akonadi::Session::~Session() () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi1
#20 0x00007fb8cabda19b in QObjectPrivate::deleteChildren() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fb8cabe39cb in QObject::~QObject() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fb8c7047019 in  () at /usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5abi4
#23 0x00007fb8cabda19b in QObjectPrivate::deleteChildren() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007fb8cb965d4c in QWidget::~QWidget() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007fb8c7038879 in MessageViewer::Viewer::~Viewer() () at /usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5abi4
#26 0x00007fb8cabda19b in QObjectPrivate::deleteChildren() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007fb8cb965d4c in QWidget::~QWidget() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007fb8cca62df9 in KMReaderWin::~KMReaderWin() () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#29 0x00007fb8cabda19b in QObjectPrivate::deleteChildren() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007fb8cb965d4c in QWidget::~QWidget() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007fb8cbad4639 in QSplitter::~QSplitter() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#32 0x00007fb8cabda19b in QObjectPrivate::deleteChildren() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007fb8cb965d4c in QWidget::~QWidget() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007fb8cbad4639 in QSplitter::~QSplitter() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#35 0x00007fb8cca941f3 in KMMainWidget::deleteWidgets() () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#36 0x00007fb8ccaadd41 in KMMainWidget::destruct() () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#37 0x00007fb8ccaadf1f in KMMainWidget::~KMMainWidget() () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#38 0x00007fb8ccaae0f9 in KMMainWidget::~KMMainWidget() () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#39 0x00007fb8cabda19b in QObjectPrivate::deleteChildren() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007fb8cb965d4c in QWidget::~QWidget() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#41 0x00007fb8c9cb673d in KMainWindow::~KMainWindow() () at /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#42 0x00007fb8cca5fd6a in KMMainWin::~KMMainWin() () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#43 0x00007fb8cca5fdd9 in KMMainWin::~KMMainWin() () at /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#44 0x00007fb8cabdd140 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#45 0x00007fb8cb96a743 in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007fb8cba7dc4b in QMainWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#47 0x00007fb8c9cb8b87 in KMainWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#48 0x00007fb8c9cfd9e5 in KXmlGuiWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#49 0x00007fb8cb92b82c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#50 0x00007fb8cb9330f4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#51 0x00007fb8cabad9a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#52 0x00007fb8cabb011d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#53 0x00007fb8cac072c3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#54 0x00007fb8bdf60287 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#55 0x00007fb8bdf604c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#56 0x00007fb8bdf6054c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#57 0x00007fb8cac068ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#58 0x00007fb8cabab9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#59 0x00007fb8cabb4a84 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#60 0x0000564e1fb3e7cd in  ()
#61 0x00007fb8ca1c5b97 in __libc_start_main (main=0x564e1fb3d840, argc=3, argv=0x7fff2bc1d3f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff2bc1d3e8) at ../csu/libc-start.c:310
#62 0x0000564e1fb3e8fa in _start ()

Reported using DrKonqi
Comment 1 Christoph Feck 2018-10-04 21:35:35 UTC
*** Bug 398530 has been marked as a duplicate of this bug. ***
Comment 2 Øystein Olsen 2018-11-29 11:30:34 UTC
I have the same issue with kmail 18.08.3. 

Qt version: 5.11.2
Framework: 5.52.0
OS: OpenSUSE Tumbleweed.

I believe this back-trace should be more useful:


Application: KMail (kmail), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
28	  return SYSCALL_CANCEL (nanosleep, requested_time, remaining);
[Current thread is 1 (Thread 0x7f53c794ba40 (LWP 3780))]

Thread 31 (Thread 0x7f529d801700 (LWP 3859)):
#0  futex_reltimed_wait_cancelable (private=0, reltime=0x7f529d8008c0, expected=0, futex_word=0x7f529d800aa8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f529d800960, mutex=0x7f529d800a58, cond=0x7f529d800a80) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f529d800a80, mutex=0x7f529d800a58, abstime=0x7f529d800960) at pthread_cond_wait.c:667
#3  0x00007f53d38b7d37 in base::ConditionVariable::TimedWait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#4  0x00007f53d38b9a0a in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#5  0x00007f53d38b9af2 in base::WaitableEvent::TimedWait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:161
#6  0x00007f53d38be8b1 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:171
#7  0x00007f53d38bfbaf in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:42
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 30 (Thread 0x7f529ede5700 (LWP 3857)):
#0  futex_reltimed_wait_cancelable (private=0, reltime=0x7f529ede48c0, expected=0, futex_word=0x7f529ede4aa8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f529ede4960, mutex=0x7f529ede4a58, cond=0x7f529ede4a80) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f529ede4a80, mutex=0x7f529ede4a58, abstime=0x7f529ede4960) at pthread_cond_wait.c:667
#3  0x00007f53d38b7d37 in base::ConditionVariable::TimedWait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#4  0x00007f53d38b9a0a in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#5  0x00007f53d38b9af2 in base::WaitableEvent::TimedWait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:161
#6  0x00007f53d38be8b1 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:171
#7  0x00007f53d38bfbaf in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:42
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 29 (Thread 0x7f529f5e6700 (LWP 3856)):
#0  futex_reltimed_wait_cancelable (private=0, reltime=0x7f529f5e58c0, expected=0, futex_word=0x7f529f5e5aa8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f529f5e5960, mutex=0x7f529f5e5a58, cond=0x7f529f5e5a80) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f529f5e5a80, mutex=0x7f529f5e5a58, abstime=0x7f529f5e5960) at pthread_cond_wait.c:667
#3  0x00007f53d38b7d37 in base::ConditionVariable::TimedWait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#4  0x00007f53d38b9a0a in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#5  0x00007f53d38b9af2 in base::WaitableEvent::TimedWait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:161
#6  0x00007f53d38be8b1 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:171
#7  0x00007f53d38bfd91 in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:68
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 28 (Thread 0x7f529fde7700 (LWP 3855)):
#0  futex_reltimed_wait_cancelable (private=0, reltime=0x7f529fde68c0, expected=0, futex_word=0x7f529fde6aa8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f529fde6960, mutex=0x7f529fde6a58, cond=0x7f529fde6a80) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f529fde6a80, mutex=0x7f529fde6a58, abstime=0x7f529fde6960) at pthread_cond_wait.c:667
#3  0x00007f53d38b7d37 in base::ConditionVariable::TimedWait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#4  0x00007f53d38b9a0a in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#5  0x00007f53d38b9af2 in base::WaitableEvent::TimedWait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:161
#6  0x00007f53d38be8b1 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:171
#7  0x00007f53d38bfbaf in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:42
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 27 (Thread 0x7f534cf8a700 (LWP 3853)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x7f53d0e91fb8 <QTWTF::pageheap_memory+57592>) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f53d0e91f68 <QTWTF::pageheap_memory+57512>, cond=0x7f53d0e91f90 <QTWTF::pageheap_memory+57552>) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f53d0e91f90 <QTWTF::pageheap_memory+57552>, mutex=0x7f53d0e91f68 <QTWTF::pageheap_memory+57512>) at pthread_cond_wait.c:655
#3  0x00007f53d0d9c01a in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f53d0e83ec0 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#4  0x00007f53d0d9c03b in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#5  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#6  0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 26 (Thread 0x7f534f7fe700 (LWP 3824)):
#0  0x00007f53cba33806 in pa_atomic_load (a=<optimized out>) at pulsecore/pstream.c:855
#1  do_read (p=p@entry=0x7f532c000bc0, re=re@entry=0x7f532c000d88) at pulsecore/pstream.c:856
#2  0x00007f53cba3674b in do_pstream_read_write (p=0x7f532c000bc0) at pulsecore/pstream.c:248
#3  0x00007f53cba36ae9 in srb_callback (srb=0x7f532c00bb70, userdata=0x7f532c000bc0) at pulsecore/pstream.c:287
#4  0x00007f53cba3733a in srbchannel_rwloop (sr=0x7f532c00bb70) at pulsecore/srbchannel.c:190
#5  0x00007f53cff7bca8 in dispatch_pollfds (m=0x56286e6d8820) at pulse/mainloop.c:140
#6  pa_mainloop_dispatch (m=m@entry=0x56286e6d8820) at pulse/mainloop.c:898
#7  0x00007f53cff7bf7c in pa_mainloop_iterate (m=0x56286e6d8820, block=<optimized out>, retval=0x0) at pulse/mainloop.c:929
#8  0x00007f53cff7c020 in pa_mainloop_run (m=0x56286e6d8820, retval=retval@entry=0x0) at pulse/mainloop.c:945
#9  0x00007f53cff8a039 in thread (userdata=0x56286e6d87e0) at pulse/thread-mainloop.c:100
#10 0x00007f53cba46e28 in internal_thread_func (userdata=0x56286e6d5b70) at pulsecore/thread-posix.c:81
#11 0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#12 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7f5354ff9700 (LWP 3823)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f53dd4abdf4 in ___fprintf_chk (fp=0x7f53dd75e8b0 <_IO_stdfile_2_lock>, flag=flag@entry=1, format=format@entry=0x7f53cf7b6da8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f53cf79f02f in fprintf (__fmt=0x7f53cf7b6da8 "[%s] %s\n", __stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#3  event_log (msg=0x7f5354ff8480 "epoll_wait: Bad file descriptor", severity=2) at log.c:251
#4  event_logv_ (severity=severity@entry=2, errstr=0x7f53dd523ab8 "Bad file descriptor", fmt=fmt@entry=0x7f53cf7b6f19 "epoll_wait", ap=ap@entry=0x7f5354ff88b0) at log.c:216
#5  0x00007f53cf79f1f4 in event_warn (fmt=fmt@entry=0x7f53cf7b6f19 "epoll_wait") at log.c:127
#6  0x00007f53cf7a0b60 in epoll_dispatch (base=0x7f5330001d50, tv=<optimized out>) at epoll.c:468
#7  0x00007f53cf796998 in event_base_loop (base=0x7f5330001d50, flags=<optimized out>) at event.c:1947
#8  0x00007f53d388c7ad in base::MessagePumpLibevent::Run () at ./../../3rdparty/chromium/base/message_loop/message_pump_libevent.cc:247
#9  0x00007f53d38ab9ab in base::RunLoop::Run () at ./../../3rdparty/chromium/base/run_loop.cc:130
#10 0x00007f53d38ce774 in base::Thread::Run () at ./../../3rdparty/chromium/base/threading/thread.cc:255
#11 base::Thread::ThreadMain () at ./../../3rdparty/chromium/base/threading/thread.cc:338
#12 0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#13 0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#14 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7f53557fa700 (LWP 3822)):
#0  futex_reltimed_wait_cancelable (private=0, reltime=0x7f53557f9880, expected=0, futex_word=0x7f53557f9a68) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f53557f9920, mutex=0x7f53557f9a18, cond=0x7f53557f9a40) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f53557f9a40, mutex=0x7f53557f9a18, abstime=0x7f53557f9920) at pthread_cond_wait.c:667
#3  0x00007f53d38b7d37 in base::ConditionVariable::TimedWait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#4  0x00007f53d38b9a0a in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#5  0x00007f53d3886250 in base::MessagePumpDefault::Run () at ./../../3rdparty/chromium/base/message_loop/message_pump_default.cc:63
#6  0x00007f53d38ab9ab in base::RunLoop::Run () at ./../../3rdparty/chromium/base/run_loop.cc:130
#7  0x00007f53d38ce774 in base::Thread::Run () at ./../../3rdparty/chromium/base/threading/thread.cc:255
#8  base::Thread::ThreadMain () at ./../../3rdparty/chromium/base/threading/thread.cc:338
#9  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#10 0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#11 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7f5355ffb700 (LWP 3821)):
#0  futex_reltimed_wait_cancelable (private=0, reltime=0x7f5355ffa880, expected=0, futex_word=0x7f5355ffaa68) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f5355ffa920, mutex=0x7f5355ffaa18, cond=0x7f5355ffaa40) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f5355ffaa40, mutex=0x7f5355ffaa18, abstime=0x7f5355ffa920) at pthread_cond_wait.c:667
#3  0x00007f53d38b7d37 in base::ConditionVariable::TimedWait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#4  0x00007f53d38b9a0a in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#5  0x00007f53d3886250 in base::MessagePumpDefault::Run () at ./../../3rdparty/chromium/base/message_loop/message_pump_default.cc:63
#6  0x00007f53d38ab9ab in base::RunLoop::Run () at ./../../3rdparty/chromium/base/run_loop.cc:130
#7  0x00007f53d38ce774 in base::Thread::Run () at ./../../3rdparty/chromium/base/threading/thread.cc:255
#8  base::Thread::ThreadMain () at ./../../3rdparty/chromium/base/threading/thread.cc:338
#9  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#10 0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#11 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7f53567fc700 (LWP 3820)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x56286e63def8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x56286e63de38, cond=0x56286e63ded0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x56286e63ded0, mutex=0x56286e63de38) at pthread_cond_wait.c:655
#3  0x00007f53d38b7c69 in base::ConditionVariable::Wait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:71
#4  0x00007f53d4310d18 in cc::SingleThreadTaskGraphRunner::Run () at ./../../3rdparty/chromium/cc/raster/single_thread_task_graph_runner.cc:123
#5  0x00007f53d38d12e6 in base::SimpleThread::ThreadMain () at ./../../3rdparty/chromium/base/threading/simple_thread.cc:68
#6  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#7  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#8  0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7f5356ffd700 (LWP 3819)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x7f5356ffcab8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f5356ffca68, cond=0x7f5356ffca90) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f5356ffca90, mutex=0x7f5356ffca68) at pthread_cond_wait.c:655
#3  0x00007f53d38b7c69 in base::ConditionVariable::Wait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:71
#4  0x00007f53d38b9a18 in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:223
#5  0x00007f53d38b9aaf in base::WaitableEvent::Wait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:154
#6  0x00007f53d38be8c8 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:169
#7  0x00007f53d38bfd91 in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:68
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f534ffff700 (LWP 3818)):
#0  __GI___libc_write (fd=2, buf=0x7f534fffba00, nbytes=39) at ../sysdeps/unix/sysv/linux/write.c:27
#1  0x00007f53dd41e62d in _IO_new_file_write (f=0x7f53dd75d680 <_IO_2_1_stderr_>, data=0x7f534fffba00, n=39) at fileops.c:1198
#2  0x00007f53dd41d9df in new_do_write (fp=fp@entry=0x7f53dd75d680 <_IO_2_1_stderr_>, data=data@entry=0x7f534fffba00 "[warn] epoll_wait: Bad file descriptor\n", to_do=to_do@entry=39) at libioP.h:876
#3  0x00007f53dd41ed5e in _IO_new_file_xsputn (f=0x7f53dd75d680 <_IO_2_1_stderr_>, data=<optimized out>, n=39) at fileops.c:1277
#4  0x00007f53dd3f583a in buffered_vfprintf (s=s@entry=0x7f53dd75d680 <_IO_2_1_stderr_>, format=format@entry=0x7f53cf7b6da8 "[%s] %s\n", args=args@entry=0x7f534fffdfc0) at ../libio/libioP.h:876
#5  0x00007f53dd3f2c62 in _IO_vfprintf_internal (s=s@entry=0x7f53dd75d680 <_IO_2_1_stderr_>, format=format@entry=0x7f53cf7b6da8 "[%s] %s\n", ap=ap@entry=0x7f534fffdfc0) at vfprintf.c:1301
#6  0x00007f53dd4abe46 in ___fprintf_chk (fp=0x7f53dd75d680 <_IO_2_1_stderr_>, flag=flag@entry=1, format=format@entry=0x7f53cf7b6da8 "[%s] %s\n") at fprintf_chk.c:35
#7  0x00007f53cf79f02f in fprintf (__fmt=0x7f53cf7b6da8 "[%s] %s\n", __stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#8  event_log (msg=0x7f534fffe0b0 "epoll_wait: Bad file descriptor", severity=2) at log.c:251
#9  event_logv_ (severity=severity@entry=2, errstr=0x7f53dd523ab8 "Bad file descriptor", fmt=fmt@entry=0x7f53cf7b6f19 "epoll_wait", ap=ap@entry=0x7f534fffe4e0) at log.c:216
#10 0x00007f53cf79f1f4 in event_warn (fmt=fmt@entry=0x7f53cf7b6f19 "epoll_wait") at log.c:127
#11 0x00007f53cf7a0b60 in epoll_dispatch (base=0x7f5348001d10, tv=<optimized out>) at epoll.c:468
#12 0x00007f53cf796998 in event_base_loop (base=0x7f5348001d10, flags=<optimized out>) at event.c:1947
#13 0x00007f53d388c759 in base::MessagePumpLibevent::Run () at ./../../3rdparty/chromium/base/message_loop/message_pump_libevent.cc:224
#14 0x00007f53d38ab9ab in base::RunLoop::Run () at ./../../3rdparty/chromium/base/run_loop.cc:130
#15 0x00007f53d29c236a in content::BrowserThreadImpl::IOThreadRun () at ../../3rdparty/chromium/content/browser/browser_thread_impl.cc:248
#16 0x00007f53d29c2817 in content::BrowserThreadImpl::Run () at ../../3rdparty/chromium/content/browser/browser_thread_impl.cc:283
#17 0x00007f53d38ce8a8 in base::Thread::ThreadMain () at ./../../3rdparty/chromium/base/threading/thread.cc:338
#18 0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#19 0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#20 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f53577fe700 (LWP 3817)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x7f53577fdab8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f53577fda68, cond=0x7f53577fda90) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f53577fda90, mutex=0x7f53577fda68) at pthread_cond_wait.c:655
#3  0x00007f53d38b7c69 in base::ConditionVariable::Wait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:71
#4  0x00007f53d38b9a18 in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:223
#5  0x00007f53d38b9aaf in base::WaitableEvent::Wait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:154
#6  0x00007f53d38be8c8 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:169
#7  0x00007f53d38bfbaf in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:42
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f5357fff700 (LWP 3816)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x7f5357ffeab8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f5357ffea68, cond=0x7f5357ffea90) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f5357ffea90, mutex=0x7f5357ffea68) at pthread_cond_wait.c:655
#3  0x00007f53d38b7c69 in base::ConditionVariable::Wait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:71
#4  0x00007f53d38b9a18 in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:223
#5  0x00007f53d38b9aaf in base::WaitableEvent::Wait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:154
#6  0x00007f53d38be8c8 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:169
#7  0x00007f53d38bfd91 in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:68
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f537cff9700 (LWP 3815)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x7f537cff8ab8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f537cff8a68, cond=0x7f537cff8a90) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f537cff8a90, mutex=0x7f537cff8a68) at pthread_cond_wait.c:655
#3  0x00007f53d38b7c69 in base::ConditionVariable::Wait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:71
#4  0x00007f53d38b9a18 in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:223
#5  0x00007f53d38b9aaf in base::WaitableEvent::Wait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:154
#6  0x00007f53d38be8c8 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:169
#7  0x00007f53d38bfbaf in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:42
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f537d7fa700 (LWP 3814)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x7f537d7f9ab8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f537d7f9a68, cond=0x7f537d7f9a90) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f537d7f9a90, mutex=0x7f537d7f9a68) at pthread_cond_wait.c:655
#3  0x00007f53d38b7c69 in base::ConditionVariable::Wait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:71
#4  0x00007f53d38b9a18 in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:223
#5  0x00007f53d38b9aaf in base::WaitableEvent::Wait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:154
#6  0x00007f53d38be8c8 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:169
#7  0x00007f53d38bfbaf in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:42
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f537dffb700 (LWP 3813)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x7f537dffaab8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f537dffaa68, cond=0x7f537dffaa90) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f537dffaa90, mutex=0x7f537dffaa68) at pthread_cond_wait.c:655
#3  0x00007f53d38b7c69 in base::ConditionVariable::Wait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:71
#4  0x00007f53d38b9a18 in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:223
#5  0x00007f53d38b9aaf in base::WaitableEvent::Wait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:154
#6  0x00007f53d38be8c8 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:169
#7  0x00007f53d38bfbaf in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:42
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f537e7fc700 (LWP 3812)):
#0  futex_reltimed_wait_cancelable (private=0, reltime=0x7f537e7fb8c0, expected=0, futex_word=0x7f537e7fbaa8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f537e7fb960, mutex=0x7f537e7fba58, cond=0x7f537e7fba80) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f537e7fba80, mutex=0x7f537e7fba58, abstime=0x7f537e7fb960) at pthread_cond_wait.c:667
#3  0x00007f53d38b7d37 in base::ConditionVariable::TimedWait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#4  0x00007f53d38b9a0a in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#5  0x00007f53d38b9af2 in base::WaitableEvent::TimedWait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:161
#6  0x00007f53d38be8b1 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:171
#7  0x00007f53d38bfd91 in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:68
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f537effd700 (LWP 3811)):
#0  futex_reltimed_wait_cancelable (private=0, reltime=0x7f537effc8c0, expected=0, futex_word=0x7f537effcaa8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f537effc960, mutex=0x7f537effca58, cond=0x7f537effca80) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f537effca80, mutex=0x7f537effca58, abstime=0x7f537effc960) at pthread_cond_wait.c:667
#3  0x00007f53d38b7d37 in base::ConditionVariable::TimedWait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#4  0x00007f53d38b9a0a in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#5  0x00007f53d38b9af2 in base::WaitableEvent::TimedWait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:161
#6  0x00007f53d38be8b1 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:171
#7  0x00007f53d38bfd91 in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:68
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f537f7fe700 (LWP 3810)):
#0  futex_reltimed_wait_cancelable (private=0, reltime=0x7f537f7fd8c0, expected=0, futex_word=0x7f537f7fdaa8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f537f7fd960, mutex=0x7f537f7fda58, cond=0x7f537f7fda80) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f537f7fda80, mutex=0x7f537f7fda58, abstime=0x7f537f7fd960) at pthread_cond_wait.c:667
#3  0x00007f53d38b7d37 in base::ConditionVariable::TimedWait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#4  0x00007f53d38b9a0a in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#5  0x00007f53d38b9af2 in base::WaitableEvent::TimedWait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:161
#6  0x00007f53d38be8b1 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:171
#7  0x00007f53d38bfd91 in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:68
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f537ffff700 (LWP 3809)):
#0  futex_reltimed_wait_cancelable (private=0, reltime=0x7f537fffe8c0, expected=0, futex_word=0x7f537fffeaa8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f537fffe960, mutex=0x7f537fffea58, cond=0x7f537fffea80) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f537fffea80, mutex=0x7f537fffea58, abstime=0x7f537fffe960) at pthread_cond_wait.c:667
#3  0x00007f53d38b7d37 in base::ConditionVariable::TimedWait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#4  0x00007f53d38b9a0a in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#5  0x00007f53d38b9af2 in base::WaitableEvent::TimedWait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:161
#6  0x00007f53d38be8b1 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:171
#7  0x00007f53d38bfd91 in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:68
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f53988b3700 (LWP 3808)):
#0  futex_reltimed_wait_cancelable (private=0, reltime=0x7f53988b28c0, expected=0, futex_word=0x7f53988b2aa8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f53988b2960, mutex=0x7f53988b2a58, cond=0x7f53988b2a80) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f53988b2a80, mutex=0x7f53988b2a58, abstime=0x7f53988b2960) at pthread_cond_wait.c:667
#3  0x00007f53d38b7d37 in base::ConditionVariable::TimedWait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#4  0x00007f53d38b9a0a in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#5  0x00007f53d38b9af2 in base::WaitableEvent::TimedWait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:161
#6  0x00007f53d38be8b1 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:171
#7  0x00007f53d38bfd91 in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:68
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f53990b4700 (LWP 3807)):
#0  futex_reltimed_wait_cancelable (private=0, reltime=0x7f53990b38c0, expected=0, futex_word=0x7f53990b3aa8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f53990b3960, mutex=0x7f53990b3a58, cond=0x7f53990b3a80) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f53990b3a80, mutex=0x7f53990b3a58, abstime=0x7f53990b3960) at pthread_cond_wait.c:667
#3  0x00007f53d38b7d37 in base::ConditionVariable::TimedWait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:120
#4  0x00007f53d38b9a0a in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:221
#5  0x00007f53d38b9af2 in base::WaitableEvent::TimedWait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:161
#6  0x00007f53d38be8b1 in base::internal::SchedulerWorker::Delegate::WaitForWork () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:171
#7  0x00007f53d38bfbaf in base::internal::SchedulerWorker::Thread::ThreadMain () at ./../../3rdparty/chromium/base/task_scheduler/scheduler_worker.cc:42
#8  0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#9  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#10 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f53998b5700 (LWP 3806)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f53dd4abdf4 in ___fprintf_chk (fp=0x7f53dd75e8b0 <_IO_stdfile_2_lock>, flag=flag@entry=1, format=format@entry=0x7f53cf7b6da8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f53cf79f02f in fprintf (__fmt=0x7f53cf7b6da8 "[%s] %s\n", __stream=<optimized out>) at /usr/include/bits/stdio2.h:97
#3  event_log (msg=0x7f53998b4480 "epoll_wait: Bad file descriptor", severity=2) at log.c:251
#4  event_logv_ (severity=severity@entry=2, errstr=0x7f53dd523ab8 "Bad file descriptor", fmt=fmt@entry=0x7f53cf7b6f19 "epoll_wait", ap=ap@entry=0x7f53998b48b0) at log.c:216
#5  0x00007f53cf79f1f4 in event_warn (fmt=fmt@entry=0x7f53cf7b6f19 "epoll_wait") at log.c:127
#6  0x00007f53cf7a0b60 in epoll_dispatch (base=0x7f5388001d40, tv=<optimized out>) at epoll.c:468
#7  0x00007f53cf796998 in event_base_loop (base=0x7f5388001d40, flags=<optimized out>) at event.c:1947
#8  0x00007f53d388c7ad in base::MessagePumpLibevent::Run () at ./../../3rdparty/chromium/base/message_loop/message_pump_libevent.cc:247
#9  0x00007f53d38ab9ab in base::RunLoop::Run () at ./../../3rdparty/chromium/base/run_loop.cc:130
#10 0x00007f53d38ce774 in base::Thread::Run () at ./../../3rdparty/chromium/base/threading/thread.cc:255
#11 base::Thread::ThreadMain () at ./../../3rdparty/chromium/base/threading/thread.cc:338
#12 0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#13 0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#14 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f539a0b6700 (LWP 3805)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x7f539a0b5a48) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f539a0b59f8, cond=0x7f539a0b5a20) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f539a0b5a20, mutex=0x7f539a0b59f8) at pthread_cond_wait.c:655
#3  0x00007f53d38b7c69 in base::ConditionVariable::Wait () at ./../../3rdparty/chromium/base/synchronization/condition_variable_posix.cc:71
#4  0x00007f53d38b9a18 in base::WaitableEvent::TimedWaitUntil () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:223
#5  0x00007f53d38b9aaf in base::WaitableEvent::Wait () at ./../../3rdparty/chromium/base/synchronization/waitable_event_posix.cc:154
#6  0x00007f53d388623f in base::MessagePumpDefault::Run () at ./../../3rdparty/chromium/base/message_loop/message_pump_default.cc:57
#7  0x00007f53d38ab9ab in base::RunLoop::Run () at ./../../3rdparty/chromium/base/run_loop.cc:130
#8  0x00007f53d38ce774 in base::Thread::Run () at ./../../3rdparty/chromium/base/threading/thread.cc:255
#9  base::Thread::ThreadMain () at ./../../3rdparty/chromium/base/threading/thread.cc:338
#10 0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#11 0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#12 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f539a8b7700 (LWP 3804)):
#0  __strncmp_sse42 () at ../sysdeps/x86_64/multiarch/strcmp-sse42.S:264
#1  0x00007f53dd3dbee2 in __GI_getenv (name=0x7f53dd523687 "NGUAGE", name@entry=0x7f53dd523685 "LANGUAGE") at getenv.c:84
#2  0x00007f53dd3d432b in guess_category_value (categoryname=0x7f53dd50c753 <_nl_category_names+51> "LC_MESSAGES", category=5) at dcigettext.c:1567
#3  __dcigettext (domainname=0x7f53dd523658 <_libc_intl_domainname> "libc", msgid1=0x7f53dd523ab8 "Bad file descriptor", msgid2=msgid2@entry=0x0, plural=plural@entry=0, n=n@entry=0, category=category@entry=5) at dcigettext.c:648
#4  0x00007f53dd3d30ef in __GI___dcgettext (domainname=<optimized out>, msgid=<optimized out>, category=category@entry=5) at dcgettext.c:47
#5  0x00007f53dd42b04c in __GI___strerror_r (errnum=errnum@entry=9, buf=buf@entry=0x0, buflen=buflen@entry=0) at _strerror.c:71
#6  0x00007f53dd42af6f in strerror (errnum=9) at strerror.c:31
#7  0x00007f53cf79f1e1 in event_warn (fmt=fmt@entry=0x7f53cf7b6f19 "epoll_wait") at log.c:127
#8  0x00007f53cf7a0b60 in epoll_dispatch (base=0x7f5390001d50, tv=<optimized out>) at epoll.c:468
#9  0x00007f53cf796998 in event_base_loop (base=0x7f5390001d50, flags=<optimized out>) at event.c:1947
#10 0x00007f53d388c759 in base::MessagePumpLibevent::Run () at ./../../3rdparty/chromium/base/message_loop/message_pump_libevent.cc:224
#11 0x00007f53d38ab9ab in base::RunLoop::Run () at ./../../3rdparty/chromium/base/run_loop.cc:130
#12 0x00007f53d38ce774 in base::Thread::Run () at ./../../3rdparty/chromium/base/threading/thread.cc:255
#13 base::Thread::ThreadMain () at ./../../3rdparty/chromium/base/threading/thread.cc:338
#14 0x00007f53d38ca1c1 in ThreadFunc () at ./../../3rdparty/chromium/base/threading/platform_thread_posix.cc:75
#15 0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#16 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f53b3fff700 (LWP 3785)):
#0  __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7f53b3ffe920) at ../sysdeps/unix/clock_gettime.c:115
#1  0x00007f53ddbb7401 in qt_clock_gettime (ts=0x7f53b3ffe920, clock=1) at kernel/qelapsedtimer_unix.cpp:175
#2  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#3  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#4  0x00007f53ddbb5c39 in QTimerInfoList::updateCurrentTime (this=0x7f53ac0048f0) at kernel/qtimerinfo_unix.cpp:91
#5  0x00007f53ddbb7f45 in timerSourceCheckHelper (src=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:540
#6  timerSourceCheck (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:173
#7  0x00007f53d98f1971 in g_main_context_check (context=context@entry=0x7f53ac000bf0, max_priority=2147483647, fds=fds@entry=0x7f53ac004a10, n_fds=n_fds@entry=1) at gmain.c:3753
#8  0x00007f53d98f1ef0 in g_main_context_iterate (context=context@entry=0x7f53ac000bf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3917
#9  0x00007f53d98f206c in g_main_context_iteration (context=0x7f53ac000bf0, may_block=may_block@entry=1) at gmain.c:3981
#10 0x00007f53ddbb7adb in QEventDispatcherGlib::processEvents (this=0x7f53ac000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0x00007f53ddb64adb in QEventLoop::exec (this=this@entry=0x7f53b3ffeb60, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#12 0x00007f53dd9b3de6 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#13 0x00007f53dd9bd9b7 in QThreadPrivate::start (arg=0x56286e487210) at thread/qthread_unix.cpp:367
#14 0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#15 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f53befef700 (LWP 3784)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x56286df90c80) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x56286df90c30, cond=0x56286df90c58) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x56286df90c58, mutex=0x56286df90c30) at pthread_cond_wait.c:655
#3  0x00007f53bf49df5b in ?? () from /usr/lib64/dri/i965_dri.so
#4  0x00007f53bf49dc87 in ?? () from /usr/lib64/dri/i965_dri.so
#5  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#6  0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f53c4853700 (LWP 3782)):
#0  0x00007ffdf1bfab2d in clock_gettime ()
#1  0x00007f53dd4aa876 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7f53c4852870) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007f53ddbb7401 in qt_clock_gettime (ts=0x7f53c4852870, clock=1) at kernel/qelapsedtimer_unix.cpp:175
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#4  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#5  0x00007f53ddbb5c39 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7f53b8004cf0) at kernel/qtimerinfo_unix.cpp:91
#6  0x00007f53ddbb6235 in QTimerInfoList::timerWait (this=0x7f53b8004cf0, tm=...) at kernel/qtimerinfo_unix.cpp:388
#7  0x00007f53ddbb785e in timerSourcePrepareHelper (timeout=0x7f53c4852954, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:161
#8  timerSourcePrepare (source=<optimized out>, timeout=timeout@entry=0x7f53c4852954) at kernel/qeventdispatcher_glib.cpp:165
#9  0x00007f53d98f1499 in g_main_context_prepare (context=context@entry=0x7f53b8000bf0, priority=priority@entry=0x7f53c48529e0) at gmain.c:3492
#10 0x00007f53d98f1e7b in g_main_context_iterate (context=context@entry=0x7f53b8000bf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3900
#11 0x00007f53d98f206c in g_main_context_iteration (context=0x7f53b8000bf0, may_block=may_block@entry=1) at gmain.c:3981
#12 0x00007f53ddbb7adb in QEventDispatcherGlib::processEvents (this=0x7f53b8000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#13 0x00007f53ddb64adb in QEventLoop::exec (this=this@entry=0x7f53c4852b30, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:140
#14 0x00007f53dd9b3de6 in QThread::exec (this=this@entry=0x7f53dd042d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at ../../include/QtCore/../../src/corelib/global/qflags.h:120
#15 0x00007f53dcfc8545 in QDBusConnectionManager::run (this=0x7f53dd042d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178
#16 0x00007f53dd9bd9b7 in QThreadPrivate::start (arg=0x7f53dd042d60 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:367
#17 0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#18 0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f53c5349700 (LWP 3781)):
#0  0x00007f53dd4922c9 in __GI___poll (fds=fds@entry=0x7f53c5348a78, nfds=nfds@entry=1, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f53d96eecc7 in poll (__timeout=-1, __nfds=1, __fds=0x7f53c5348a78) at /usr/include/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0x56286e00aff0, cond=cond@entry=0x56286e00b030, vector=vector@entry=0x0, count=count@entry=0x0) at xcb_conn.c:479
#3  0x00007f53d96f08ea in xcb_wait_for_event (c=0x56286e00aff0) at xcb_in.c:697
#4  0x00007f53c5c6c519 in QXcbEventReader::run (this=0x56286dfee400) at qxcbconnection.h:409
#5  0x00007f53dd9bd9b7 in QThreadPrivate::start (arg=0x56286dfee400) at thread/qthread_unix.cpp:367
#6  0x00007f53dab27554 in start_thread (arg=<optimized out>) at pthread_create.c:463
#7  0x00007f53dd49cccf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f53c794ba40 (LWP 3780)):
[KCrash Handler]
#6  0x0000000000000021 in ?? ()
#7  0x00007f53d2cb5505 in content::RenderProcessHostImpl::ShutdownRequest () at ../../3rdparty/chromium/content/browser/renderer_host/render_process_host_impl.cc:3769
#8  0x00007f53d243d4f5 in content::mojom::RendererHostStubDispatch::Accept () at ./gen/content/common/renderer_host.mojom.cc:491
#9  0x00007f53d40e7fad in mojo::InterfaceEndpointClient::HandleValidatedMessage () at ../../3rdparty/chromium/mojo/public/cpp/bindings/lib/interface_endpoint_client.cc:419
#10 0x00007f53d4120c49 in AcceptOnProxyThread () at ../../3rdparty/chromium/ipc/ipc_mojo_bootstrap.cc:789
#11 0x00007f53d412072e in Invoke<scoped_refptr<IPC::(anonymous namespace)::ChannelAssociatedGroupController> const&, mojo::Message> () at ../../3rdparty/chromium/base/bind_internal.h:211
#12 MakeItSo<void (IPC::(anonymous namespace)::ChannelAssociatedGroupController::* const&)(mojo::Message), scoped_refptr<IPC::(anonymous namespace)::ChannelAssociatedGroupController> const&, mojo::Message> () at ../../3rdparty/chromium/base/bind_internal.h:294
#13 RunImpl<void (IPC::(anonymous namespace)::ChannelAssociatedGroupController::* const&)(mojo::Message), std::tuple<scoped_refptr<IPC::(anonymous namespace)::ChannelAssociatedGroupController>, base::internal::PassedWrapper<mojo::Message> > const&, 0, 1> () at ../../3rdparty/chromium/base/bind_internal.h:368
#14 0x00007f53d38688b8 in base::OnceCallback<void ()>::Run() && () at ../../3rdparty/chromium/base/callback.h:65
#15 base::debug::TaskAnnotator::RunTask () at ./../../3rdparty/chromium/base/debug/task_annotator.cc:55
#16 0x00007f53d388911a in base::internal::IncomingTaskQueue::RunTask () at ./../../3rdparty/chromium/base/message_loop/incoming_task_queue.cc:124
#17 base::MessageLoop::RunTask () at ./../../3rdparty/chromium/base/message_loop/message_loop.cc:399
#18 0x00007f53d3889bcf in base::MessageLoop::DeferOrRunPendingTask () at ./../../3rdparty/chromium/base/message_loop/message_loop.cc:411
#19 0x00007f53d3889d4a in base::MessageLoop::DoWork () at ./../../3rdparty/chromium/base/message_loop/message_loop.cc:455
#20 0x00007f53d22976f9 in QtWebEngineCore::WebEngineContext::destroy (this=0x56286e68af50) at /usr/src/debug/libqt5-qtwebengine-5.11.2-1.2.x86_64/src/core/web_engine_context.cpp:246
#21 0x00007f53d2297815 in (anonymous namespace)::destroyContext () at /usr/src/debug/libqt5-qtwebengine-5.11.2-1.2.x86_64/src/core/web_engine_context.cpp:129
#22 0x00007f53ddb67f2a in qt_call_post_routines () at kernel/qcoreapplication.cpp:357
#23 0x00007f53de506b56 in QApplication::~QApplication (this=0x7ffdf1b35bc0, __in_chrg=<optimized out>) at kernel/qapplication.cpp:794
#24 0x000056286c4da386 in KMailApplication::~KMailApplication (this=0x7ffdf1b35bc0, __in_chrg=<optimized out>) at /usr/src/debug/kmail-18.08.3-1.1.x86_64/src/main.cpp:42
#25 main (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/kmail-18.08.3-1.1.x86_64/src/main.cpp:127
[Inferior 1 (process 3780) detached]
Comment 3 Dennis Schridde 2018-12-01 20:51:28 UTC
Created attachment 116615 [details]
New crash information added by DrKonqi

kmail (5.9.3) using Qt 5.11.1

- What I was doing when the application crashed:

I quit KMail (^Q) and received the crash notification immediately afterwards.

-- Backtrace (Reduced):
#7  0x00007f929f2adce5 in content::RenderProcessHostImpl::ShutdownRequest () at ../../3rdparty/chromium/content/browser/renderer_host/render_process_host_impl.cc:3769
#8  0x00007f929eaaf755 in content::mojom::RendererHostStubDispatch::Accept () at ./gen/content/common/renderer_host.mojom.cc:491
#9  0x00007f92a06e02fd in mojo::InterfaceEndpointClient::HandleValidatedMessage () at ../../3rdparty/chromium/mojo/public/cpp/bindings/lib/interface_endpoint_client.cc:419
#10 0x00007f92a0718f49 in AcceptOnProxyThread () at ../../3rdparty/chromium/ipc/ipc_mojo_bootstrap.cc:789
#12 MakeItSo<void (IPC::(anonymous namespace)::ChannelAssociatedGroupController::* const&)(mojo::Message), scoped_refptr<IPC::(anonymous namespace)::ChannelAssociatedGroupController> const&, mojo::Message> () at ../../3rdparty/chromium/base/bind_internal.h:294
Comment 4 Christoph Feck 2018-12-06 02:26:57 UTC
Please do not add unrelated backtraces. Comment #2 and comment #3 are bug 398577.

*** This bug has been marked as a duplicate of bug 387177 ***
Comment 5 Øystein Olsen 2018-12-06 21:51:47 UTC
Based on the backtrace and given the correct bug number, I can see that this is an unrelated bug.

Now, I do not use kontact and I do exactly the same as described in this bug. Start kmail, then exit through the system tray icon (or Ctrl+Q). The segmentation fault happens without ever opening an email in a subwindow. 

Two different users found a bug with an exact matching description. How were we supposed to figure out that this was an unrelated bug and find the correct one, which has completely different description?