Re: Kmail 5.3.0/akonadi/qtwebengineproc crashing and core dumping

On Tuesday, 23 August 2016 11:17:21 BST Daniel Vrátil wrote:
> On Tuesday, August 23, 2016 10:06:11 AM CEST ianseeks wrote:
> > Just to add to the list of kmail 5.3.0 crashing problems.
> > If i look in the journal, i see the following core dumping messages
> > occurring about the time kamil crashes or akonadi reloads itself (may be
> > coincidental)
> 
> There is a known issue with QtWebEngine crashing when compiled with GCC 6.
> The crashes can be solved by compiling QtWebEngine with
> -fno-delete-null-pointer-checks (you may want to check with your
> distribution about this).
> 
> The Akonadi Server crashes are more concerning to me, would be nice to get a
> backtrace of that (you can attach "gdb" to a running process (gdb -p `pidof
> akonadiserver`) and get a backtrace once it crashes.
I'm struggling with the "gdb" because if i attach it to akonadiserver it seems 
to cause all sorts of strange problems with kmail like stopping it loading ( 
you get the window frame for kmail and thats all it does unitl you stop gdb) 
and it only finally loads kmail when i quit "gdb"

The backtrace i get is the following 7 lines:-
(gdp) bt
#0  0x00007fe9bdca4a1d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fe9bbede056 in ?? () from /usr/lib64/libglib-2.0.so.0
#2  0x00007fe9bbede16c in g_main_context_iteration () from /usr/lib64/
libglib-2.0.so.0
#3  0x00007fe9be7e6acf in QEventDispatcherGlib::processEvents (this=0x18d0a90, 
flags=...) at kernel/qeventdispatcher_glib.cpp:417
#4  0x00007fe9be78e76a in QEventLoop::exec (this=this@entry=0x7ffcaf745f40, 
flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fe9be796f6c in QCoreApplication::exec () at kernel/
qcoreapplication.cpp:1285
#6  0x00000000005808b5 in AkApplicationBase::exec 
(this=this@entry=0x7ffcaf746040) at /usr/src/debug/akonadi-16.08.0/src/shared/
akapplication.cpp:125
#7  0x0000000000422fa3 in main (argc=<optimized out>, argv=<optimized out>) at 
/usr/src/debug/akonadi-16.08.0/src/server/main.cpp:80
(gdb)

Lots of time i get the "Please wait" message while it gets the emails after 
clicking on a folder (or amn email) and kmail show 50% CPU but doesn't seem to 
be d 

I got the following when loading kmail from the cli and it crashing when 
clicking on your email.
kmail
Pass a valid window to KWallet::Wallet::openWallet().
 void AdblockManager::reloadConfig() false    
AdBlock::AdblockManager(0x2028e60)
this does not work on a KActionCollection containing actions!
org.kde.akonadi.ETM: GEN true false false
org.kde.akonadi.ETM: collection: QVector()
org.kde.akonadi.ETM: 
org.kde.akonadi.ETM: Subtree:  43 QSet(53, 52, 55, 54, 57, 56, 43, 45, 44, 47, 
49, 46, 48, 51, 50)
org.kde.akonadi.ETM: collection: "inbox"
org.kde.akonadi.ETM: Subtree:  1 QSet(60, 1)
org.kde.akonadi.ETM: Fetch job took  316 msec
org.kde.akonadi.ETM: was collection fetch job: collections: 17
org.kde.akonadi.ETM: first fetched collection: "Search"
org.kde.akonadi.ETM: Fetch job took  372 msec
org.kde.akonadi.ETM: was collection fetch job: collections: 6
org.kde.akonadi.ETM: first fetched collection: "Search"
org.kde.akonadi.ETM: Fetch job took  152 msec
org.kde.akonadi.ETM: was item fetch job: items: 51
org.kde.akonadi.ETM: collection: "kde PIM"
org.kde.akonadi.ETM: Fetch job took  1758 msec
org.kde.akonadi.ETM: was item fetch job: items: 22409
Terminated
 > 

> Dan
> 
> > Aug 21 10:01:29 LianLi systemd-coredump[2099]: Process 1580
> > (akonadiserver)
> > of user 1004 dumped core.
> > Aug 21 10:30:12 LianLi systemd-coredump[4284]: Process 3243
> > (akonadiserver)
> > of user 1004 dumped core.
> > Aug 21 11:05:58 LianLi systemd-coredump[2587]: Process 2580
> > (QtWebEngineProc) of user 1004 dumped core.
> > Aug 21 11:06:31 LianLi systemd-coredump[2669]: Process 2257
> > (akonadiserver)
> > of user 1004 dumped core.
> > Aug 21 11:11:07 LianLi systemd-coredump[3499]: Process 3270 (kmail) of
> > user
> > 1004 dumped core.
> > Aug 21 11:14:31 LianLi systemd-coredump[3652]: Process 1376
> > (kactivitymanage) of user 1004 dumped core.
> > Aug 21 14:03:03 LianLi systemd-coredump[11392]: Process 10905
> > (akonadiserver) of user 1004 dumped core.
> > Aug 21 14:03:45 LianLi systemd-coredump[11901]: Process 11894
> > (QtWebEngineProc) of user 1004 dumped core.
> > Aug 21 14:07:40 LianLi systemd-coredump[12390]: Process 11652
> > (akonadiserver) of user 1004 dumped core.
> > Aug 21 14:21:43 LianLi systemd-coredump[13810]: Process 13542
> > (akonadiserver) of user 1004 dumped core.
> > Aug 21 16:19:20 LianLi systemd-coredump[15662]: Process 15220
> > (akonadiserver) of user 1004 dumped core.
> > Aug 21 16:20:31 LianLi systemd-coredump[16142]: Process 15834
> > (akonadiserver) of user 1004 dumped core.
> > Aug 21 16:21:29 LianLi systemd-coredump[16889]: Process 16881
> > (QtWebEngineProc) of user 1004 dumped core.
> > Aug 21 16:27:06 LianLi systemd-coredump[17832]: Process 17200
> > (akonadiserver) of user 1004 dumped core.
> > Aug 21 16:40:49 LianLi systemd-coredump[19519]: Process 19292
> > (akonadiserver) of user 1004 dumped core.
> > Aug 21 16:49:19 LianLi systemd-coredump[20023]: Process 19522
> > (akonadiserver) of user 1004 dumped core.
> > Aug 21 17:00:54 LianLi systemd-coredump[22090]: Process 21690
> > (akonadiserver) of user 1004 dumped core.
> > Aug 21 17:04:51 LianLi systemd-coredump[22988]: Process 10822
> > (kactivitymanage) of user 1004 dumped core.
> > Aug 21 17:18:53 LianLi systemd-coredump[24661]: Process 24375
> > (akonadiserver) of user 1004 dumped core.
> > Aug 21 17:49:52 LianLi systemd-coredump[25555]: Process 25240
> > (akonadiserver) of user 1004 dumped core.
> > Aug 21 18:03:52 LianLi systemd-coredump[25885]: Process 25557
> > (akonadiserver) of user 1004 dumped core.
> > Aug 21 19:45:09 LianLi systemd-coredump[27145]: Process 25886
> > (akonadiserver) of user 1004 dumped core.
> > Aug 21 22:17:23 LianLi systemd-coredump[31022]: Process 23202
> > (kactivitymanage) of user 1004 dumped core.
> > Aug 22 09:57:07 LianLi systemd-coredump[3751]: Process 2721
> > (akonadiserver)
> > of user 1004 dumped core.
> > Aug 22 09:58:15 LianLi systemd-coredump[4128]: Process 2638
> > (kactivitymanage) of user 1004 dumped core.
> > Aug 22 10:03:46 LianLi systemd-coredump[2056]: Process 1459
> > (akonadiserver)
> > of user 1004 dumped core.
> > Aug 22 10:05:19 LianLi systemd-coredump[2274]: Process 2057
> > (akonadiserver)
> > of user 1004 dumped core.
> > Aug 22 10:17:40 LianLi systemd-coredump[3656]: Process 3268
> > (akonadiserver)
> > of user 1004 dumped core.
> > Aug 22 11:01:46 LianLi systemd-coredump[5078]: Process 4659
> > (akonadiserver)
> > of user 1004 dumped core.
> > Aug 22 11:03:32 LianLi systemd-coredump[1871]: Process 1864
> > (QtWebEngineProc) of user 1004 dumped core.
> > Aug 22 11:13:24 LianLi systemd-coredump[3190]: Process 1374
> > (kactivitymanage) of user 1004 dumped core.
> > Aug 22 11:27:49 LianLi systemd-coredump[6959]: Process 5815
> > (kactivitymanage) of user 1004 dumped core.
> > Aug 22 16:10:31 LianLi systemd-coredump[2667]: Process 2334
> > (akonadiserver)
> > of user 1004 dumped core.
> > Aug 22 17:42:08 LianLi systemd-coredump[17984]: Process 1354
> > (kactivitymanage) of user 1004 dumped core.
> > Aug 22 18:46:02 LianLi systemd-coredump[22802]: Process 22794
> > (QtWebEngineProc) of user 1004 dumped core.
> > Aug 22 18:46:58 LianLi systemd-coredump[23046]: Process 20925
> > (kactivitymanage) of user 1004 dumped core.
> > Aug 23 08:11:44 LianLi systemd-coredump[5506]: Process 5497
> > (QtWebEngineProc) of user 1004 dumped core.
> > Aug 23 08:12:40 LianLi systemd-coredump[5524]: Process 5256
> > (akonadiserver)
> > of user 1004 dumped core.
> > Aug 23 08:19:49 LianLi systemd-coredump[7086]: Process 2572
> > (kactivitymanage) of user 1004 dumped core.
> > Aug 23 10:01:04 LianLi systemd-coredump[15380]: Process 15079
> > (akonadiserver) of user 1004 dumped core.


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