Every time I close kontact/kmail, it crashes. As other components of kontact don't crash on exit, it's probably kmail... ;-) Kubuntu 16.10 somehow doesn't give me debug packages, so I can't provide much more info. The only hint I have so far is the exit codes of kontact: Pass a valid window to KWallet::Wallet::openWallet(). org.kde.akonadi.ETM: GEN true false false org.kde.akonadi.ETM: collection: QVector() org.kde.akonadi.ETM: org.kde.akonadi.ETM: GEN true false true org.kde.akonadi.ETM: collection: QVector() org.kde.akonadi.ETM: GEN true false true org.kde.akonadi.ETM: collection: QVector() org.kde.akonadi.ETM: GEN true false true org.kde.akonadi.ETM: collection: QVector() "Tag 'a' is not defined in message {<__kuit_internal_top__>For more information about using Akregator, check the <a ...}." "Tag 'a' is not defined in message {<__kuit_internal_top__>For more information about using Akregator, check the <a ...}." org.kde.akonadi.ETM: GEN true false true org.kde.akonadi.ETM: collection: QVector() org.kde.akonadi.ETM: GEN true false true org.kde.akonadi.ETM: collection: QVector() org.kde.akonadi.ETM: GEN true false true org.kde.akonadi.ETM: collection: QVector() "http://www.kde.org/dotkdeorg.rdf" "https://www.linux.com/rss/feeds.php" "http://planetkde.org/rss20.xml" "http://pim.planetkde.org/rss20.xml" "http://www.kde.org/dot/kde-apps-content.rdf" "http://www.kde.org/kde-look-content.rdf" org.kde.akonadi.ETM: Subtree: 25 QSet(25, 30, 28, 29, 26, 27) org.kde.akonadi.ETM: Subtree: 1 QSet(86, 87, 1) org.kde.akonadi.ETM: Subtree: 17 QSet(24, 22, 23, 20, 21, 18, 19, 17, 83) org.kde.akonadi.ETM: collection: "INBOX" org.kde.akonadi.ETM: Subtree: 31 QSet(36, 37, 34, 35, 32, 33, 31, 80) org.kde.akonadi.ETM: Subtree: 10 QSet(16, 14, 15, 12, 13, 10, 11) org.kde.akonadi.ETM: Fetch job took 546 msec org.kde.akonadi.ETM: was collection fetch job: collections: 33 org.kde.akonadi.ETM: first fetched collection: "Search" org.kde.akonadi.ETM: collection: "INBOX" org.kde.akonadi.ETM: collection: "INBOX" org.kde.akonadi.ETM: Fetch job took 573 msec org.kde.akonadi.ETM: was collection fetch job: collections: 12 org.kde.akonadi.ETM: first fetched collection: "Search" org.kde.akonadi.ETM: Fetch job took 248 msec org.kde.akonadi.ETM: was item fetch job: items: 3019 org.kde.akonadi.ETM: Fetch job took 225 msec org.kde.akonadi.ETM: was item fetch job: items: 190 org.kde.akonadi.ETM: Fetch job took 245 msec org.kde.akonadi.ETM: was item fetch job: items: 68 org.kde.akonadi.ETM: Subtree: 8 QSet(8) org.kde.akonadi.ETM: Fetch job took 786 msec org.kde.akonadi.ETM: was collection fetch job: collections: 1 org.kde.akonadi.ETM: first fetched collection: "Notizen" org.kde.akonadi.ETM: Subtree: 6 QSet(6) org.kde.akonadi.ETM: Subtree: 68 QSet(72, 68, 82, 81) org.kde.akonadi.ETM: Subtree: 1 QSet(1, 66, 67) org.kde.akonadi.ETM: Subtree: 78 QSet(78) org.kde.akonadi.ETM: Fetch job took 793 msec org.kde.akonadi.ETM: was collection fetch job: collections: 9 org.kde.akonadi.ETM: first fetched collection: "Search" org.kde.akonadi.ETM: Subtree: 6 QSet(6) org.kde.akonadi.ETM: Subtree: 2 QSet(2) org.kde.akonadi.ETM: Subtree: 68 QSet(77, 74, 75, 73, 70, 71, 68, 69, 84, 85, 79, 76) org.kde.akonadi.ETM: Subtree: 1 QSet(1, 66, 67) org.kde.akonadi.ETM: Subtree: 78 QSet(78) org.kde.akonadi.ETM: Fetch job took 798 msec org.kde.akonadi.ETM: was collection fetch job: collections: 18 org.kde.akonadi.ETM: first fetched collection: "Search" org.kde.akonadi.ETM: Subtree: 8 QSet(8) org.kde.akonadi.ETM: Fetch job took 600 msec org.kde.akonadi.ETM: was collection fetch job: collections: 1 org.kde.akonadi.ETM: first fetched collection: "Notizen" org.kde.akonadi.ETM: Subtree: 6 QSet(6) org.kde.akonadi.ETM: Subtree: 68 QSet(72, 68, 82, 81) org.kde.akonadi.ETM: Subtree: 1 QSet(1, 66, 67) org.kde.akonadi.ETM: Subtree: 78 QSet(78) org.kde.akonadi.ETM: Fetch job took 602 msec org.kde.akonadi.ETM: was collection fetch job: collections: 9 org.kde.akonadi.ETM: first fetched collection: "Search" org.kde.akonadi.ETM: Subtree: 6 QSet(6) org.kde.akonadi.ETM: Subtree: 2 QSet(2) org.kde.akonadi.ETM: Subtree: 68 QSet(77, 74, 75, 73, 70, 71, 68, 69, 84, 85, 79, 76) org.kde.akonadi.ETM: Subtree: 1 QSet(1, 66, 67) org.kde.akonadi.ETM: Subtree: 78 QSet(78) org.kde.akonadi.ETM: Fetch job took 606 msec org.kde.akonadi.ETM: was collection fetch job: collections: 18 org.kde.akonadi.ETM: first fetched collection: "Search" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" kf5.kio.core: Refilling KProtocolInfoFactory cache in the hope to find "cid" 0x5568d96d8dc8 deleted without having been removed from the factory first. This will leak standalone popupmenus and could lead to crashes. 0x5568d976e248 deleted without having been removed from the factory first. This will leak standalone popupmenus and could lead to crashes. 0x5568d97e74e0 deleted without having been removed from the factory first. This will leak standalone popupmenus and could lead to crashes. 0x5568d96ef648 deleted without having been removed from the factory first. This will leak standalone popupmenus and could lead to crashes. 0x5568d97b2418 deleted without having been removed from the factory first. This will leak standalone popupmenus and could lead to crashes. 0x5568d964cd08 deleted without having been removed from the factory first. This will leak standalone popupmenus and could lead to crashes. 0x5568d97e27b8 deleted without having been removed from the factory first. This will leak standalone popupmenus and could lead to crashes. 0x5568d97f39d8 deleted without having been removed from the factory first. This will leak standalone popupmenus and could lead to crashes. 0x5568d9680ab0 deleted without having been removed from the factory first. This will leak standalone popupmenus and could lead to crashes. *** KMail got signal 11 (Exiting) KCrash: crashing... crashRecursionCounter = 2 KCrash: Application Name = kontact path = /usr/bin pid = 4028 KCrash: Arguments: /usr/bin/kontact KCrash: Attempting to start /usr/lib/x86_64-linux-gnu/libexec/drkonqi from kdeinit sock_file=/run/user/1000/kdeinit5__0 [1]+ Angehalten kontact I also tried a backtrace from gdb: #0 0x00007fffedc235df in QNetworkConfiguration::~QNetworkConfiguration() () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5 #1 0x00007ffff5e98019 in QHashData::free_helper(void (*)(QHashData::Node*)) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #2 0x00007fffedc3606f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5 #3 0x00007ffff5e35ed3 in QThreadStorageData::finish(void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007ffff600ea2c in QCoreApplicationPrivate::cleanupThreadData() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007ffff635884b in QGuiApplicationPrivate::~QGuiApplicationPrivate() () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #6 0x00007ffff6e29869 in QApplicationPrivate::~QApplicationPrivate() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #7 0x00007ffff60442c7 in QObject::~QObject() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007ffff6010ec6 in QCoreApplication::~QCoreApplication() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #9 0x00007ffff6e2b331 in QApplication::~QApplication() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #10 0x00005555555577db in ?? () #11 0x00007ffff7dd6d30 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5KontactInterface.so.5 #12 0x00007fffffffdc60 in ?? () #13 0x00007fffffffda50 in ?? () #14 0x00007fffffffda60 in ?? () #15 0x00007fffffffdc50 in ?? () #16 0x00007fffffffdac0 in ?? () #17 0x00007fffffffdad0 in ?? () #18 0x00007fffffffd970 in ?? () #19 0x00007fffffffd9e0 in ?? () #20 0x00007fffffffd9f0 in ?? () ---Type <return> to continue, or q <return> to quit--- #21 0x00007fffffffda80 in ?? () #22 0x00007fffffffd9a0 in ?? () #23 0x00007fffffffda10 in ?? () #24 0x0000555555798c80 in ?? () #25 0x00007fffffffdca0 in ?? () #26 0x00007fffffffda30 in ?? () #27 0x00007fffffffdbd0 in ?? () #28 0x00007fffffffda40 in ?? () #29 0x00007fffffffdbf0 in ?? () #30 0x00007fffffffda70 in ?? () #31 0x00007fffffffdc20 in ?? () #32 0x00007fffffffdaa0 in ?? () #33 0x00007fffffffd910 in ?? () #34 0x00007fffffffdc40 in ?? () #35 0x00007fffffffdab0 in ?? () #36 0x00007fffffffd930 in ?? () #37 0x00007fffffffdc70 in ?? () #38 0x00007fffffffdae0 in ?? () #39 0x00007fffffffd950 in ?? () #40 0x00007fffffffd960 in ?? () #41 0x00007fffffffdc90 in ?? () #42 0x00007fffffffdb00 in ?? () #43 0x00007fffffffd990 in ?? () #44 0x00007fffffffdcc0 in ?? () #45 0x00007fffffffdb30 in ?? () #46 0x00007fffffffdcd0 in ?? () ---Type <return> to continue, or q <return> to quit--- #47 0x00007fffffffdce0 in ?? () #48 0x00007fffffffdb50 in ?? () #49 0x00007fffffffd9c0 in ?? () #50 0x00007fffffffd9d0 in ?? () #51 0x00007fffffffdb80 in ?? () #52 0x00007fffffffda00 in ?? () #53 0x00007fffffffdba0 in ?? () #54 0x00007fffffffdd20 in ?? () #55 0x00007fffffffdcb0 in ?? () #56 0x00007fffffffdbc0 in ?? () #57 0x00007fffffffdc00 in ?? () #58 0x00007fffffffdc10 in ?? () #59 0x00007fffffffdb10 in ?? () #60 0x00007fffffffdb20 in ?? () #61 0x00007fffffffdb60 in ?? () #62 0x00007fffffffdb70 in ?? () #63 0x00007fffffffdbb0 in ?? () #64 0x00007fffffffda20 in ?? () #65 0x00007fffffffdbe0 in ?? () #66 0x00007fffffffda90 in ?? () #67 0x00007fffffffdc30 in ?? () #68 0x00007fffffffd940 in ?? () #69 0x00007fffffffdaf0 in ?? () #70 0x00007fffffffdb40 in ?? () #71 0x00007fffffffd9b0 in ?? () #72 0x00007fffffffdb90 in ?? () ---Type <return> to continue, or q <return> to quit--- #73 0x00007fffffffdf58 in ?? () #74 0x00000001f7de1c94 in ?? () #75 0x000055555581fa90 in ?? () #76 0x0000000000000692 in ?? () #77 0x0000555555823dc0 in ?? () #78 0x00007ffff5427d90 in ?? () from /lib/x86_64-linux-gnu/libc.so.6 #79 0x0000555555837440 in ?? () #80 0x00007ffff7de24db in do_lookup_x (undef_name=0x7ffff5dafdef "close", new_hash=93824995176944, old_hash=0x7ffff7de1c94 <check_match+324>, ref=0x7ffff60ddba0 <QArrayData::shared_null>, result=0x555555559320, scope=<optimized out>, i=<optimized out>, version=0x7ffff6262228, flags=1431671360, skip=<optimized out>, type_class=-166863968, undef_map=0x7ffff62948b0) at dl-lookup.c:423 #81 0x00000000000013f9 in ?? () #82 0x000055555582def0 in ?? () #83 0x00007ffff6262228 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #84 0x0000555555559240 in ?? () #85 0x00007ffff7de24db in do_lookup_x (undef_name=0x7ffff441f510 "_ZN5QFontD1Ev", undef_name@entry=0x64007200650077 <error: Cannot access memory at address 0x64007200650077>, new_hash=93824995169632, new_hash@entry=33776997212487781, old_hash=0x7fffffffdbe0, old_hash@entry=0x20007400720068, ref=0x5555555591e0, result=0x7ffff60ddba0 <QArrayData::shared_null>, result@entry=0x68006300610066, scope=<optimized out>, i=<optimized out>, version=0x7fffd50d5398, flags=-166863968, skip=<optimized out>, type_class=1434666096, undef_map=0x7ffff7f2e5f0) at dl-lookup.c:423 #86 0x00007ffff7de29e1 in _dl_lookup_symbol_x ( undef_name=0x64007200650077 <error: Cannot access memory at address 0x64007200650077>, undef_map=0xfc006600650067, ref=0x55555582de20, symbol_scope=0x7200680065006d, version=0x7fffd50d5398, type_class=7536757, flags=1431671040, skip_map=0x5555558230c0) at dl-lookup.c:833 Backtrace stopped: previous frame inner to this frame (corrupt stack?)
*** This bug has been marked as a duplicate of bug 371557 ***