[Bug 245135] New: IMAP resource hangs after internet connection cycles

[Leo Franchi]

https://bugs.kde.org/show_bug.cgi?id=245135

           Summary: IMAP resource hangs after internet connection cycles
           Product: Akonadi
           Version: 1.3.50
          Platform: Compiled Sources
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: IMAP resource
        AssignedTo: ervin at kde.org
        ReportedBy: lfranchi at kde.org
                CC: vkrause at kde.org, kdepim-bugs at kde.org


Version:           1.3.50 (using Devel) 
OS:                Linux

My computer is on a flaky wireless connection, that tends to go down for a few
seconds every so often. When this happens, the imap resource hangs, and kmail
also hangs as well. Here is the debug output:


[/home/leo/kde/bin/akonadi_imap_resource]
akonadi_imap_resource_0(14431)/libakonadi Akonadi::ItemSync::setFullSyncItems:
Received:  1 In total:  105  Wanted:  -1
[/home/leo/kde/bin/akonadi_imap_resource]
akonadi_imap_resource_0(14431)/libakonadi Akonadi::ItemSync::setFullSyncItems:
Received:  1 In total:  106  Wanted:  -1
[/home/leo/kde/bin/akonadi_imap_resource]
akonadi_imap_resource_0(14431)/libakonadi Akonadi::ItemSync::setFullSyncItems:
Received:  2 In total:  108  Wanted:  -1
[/home/leo/kde/bin/akonadi_imap_resource]
akonadi_imap_resource_0(14431)/libakonadi Akonadi::ItemSync::setFullSyncItems:
Received:  5 In total:  113  Wanted:  -1
[/home/leo/kde/bin/akonadi_imap_resource]
akonadi_imap_resource_0(14431)/libakonadi Akonadi::ItemSync::setFullSyncItems:
Received:  2 In total:  115  Wanted:  -1
[/home/leo/kde/bin/akonadi_imap_resource] akonadi_imap_resource_0(14431)
ImapResource::doSetOnline: online= false network.status= 0
[/home/leo/kde/bin/akonadi_imap_resource] akonadi_imap_resource_0(14431)
ImapResource::doSetOnline: online= true network.status= 0


and then attaching to the imap resource processes with gdb, here is the stack
trace:


(gdb) bt
#0  0x00007f4edecef40c in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib/libpthread.so.0
#1  0x00007f4edef99d75 in QWaitConditionPrivate::wait (this=0x103fed0,
time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  0x00007f4edef99b1d in QWaitCondition::wait (this=0x103fe20,
mutex=0x103fe00, time=18446744073709551615) at
thread/qwaitcondition_unix.cpp:160
#3  0x00007f4edef99502 in QThread::wait (this=0x103fd10,
time=18446744073709551615) at thread/qthread_unix.cpp:660
#4  0x00007f4edd8bfe44 in ~SessionThread (this=0x103fd10, __in_chrg=<value
optimized out>) at /home/leo/kde/src/kdepimlibs/kimap/sessionthread.cpp:52
#5  0x00007f4edd8bff30 in ~SessionThread (this=0x103fd10, __in_chrg=<value
optimized out>) at /home/leo/kde/src/kdepimlibs/kimap/sessionthread.cpp:53
#6  0x00007f4edd8bbc59 in ~Session (this=0xf41840, __in_chrg=<value optimized
out>) at /home/leo/kde/src/kdepimlibs/kimap/session.cpp:67
#7  0x00007f4edd8bbcb8 in ~Session (this=0xf41840, __in_chrg=<value optimized
out>) at /home/leo/kde/src/kdepimlibs/kimap/session.cpp:68
#8  0x00007f4edf0bd458 in qDeleteInEventHandler (o=0xf41840) at
kernel/qobject.cpp:3980
#9  0x00007f4edf0b7ea1 in QObject::event (this=0xf41840, e=0x1404af0) at
kernel/qobject.cpp:1194
#10 0x00007f4ede065532 in QApplicationPrivate::notify_helper (this=0xee3a10,
receiver=0xf41840, e=0x1404af0) at kernel/qapplication.cpp:4392
#11 0x00007f4ede062c5c in QApplication::notify (this=0x7fff8d6131e0,
receiver=0xf41840, e=0x1404af0) at kernel/qapplication.cpp:3794
#12 0x00007f4edc06abfd in KApplication::notify (this=0x7fff8d6131e0,
receiver=0xf41840, event=0x1404af0) at
/home/leo/kde/src/kdelibs/kdeui/kernel/kapplication.cpp:309
#13 0x00007f4edf0a1b03 in QCoreApplication::notifyInternal
(this=0x7fff8d6131e0, receiver=0xf41840, event=0x1404af0) at
kernel/qcoreapplication.cpp:732
#14 0x00007f4edf0a5157 in QCoreApplication::sendEvent (receiver=0xf41840,
event=0x1404af0) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#15 0x00007f4edf0a2cbd in QCoreApplicationPrivate::sendPostedEvents
(receiver=0x0, event_type=0, data=0xea3720) at kernel/qcoreapplication.cpp:1370
#16 0x00007f4edf0a28df in QCoreApplication::sendPostedEvents (receiver=0x0,
event_type=0) at kernel/qcoreapplication.cpp:1266
#17 0x00007f4edf0d615d in QCoreApplication::sendPostedEvents () at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#18 0x00007f4edf0d51fe in postEventSourceDispatch (s=0xee7610) at
kernel/qeventdispatcher_glib.cpp:277
#19 0x00007f4ed99f4b33 in g_main_context_dispatch () from
/usr/lib/libglib-2.0.so.0
#20 0x00007f4ed99f5310 in g_main_context_iterate () from
/usr/lib/libglib-2.0.so.0
#21 0x00007f4ed99f55ad in g_main_context_iteration () from
/usr/lib/libglib-2.0.so.0
#22 0x00007f4edf0d5a05 in QEventDispatcherGlib::processEvents (this=0xea2dd0,
flags=...) at kernel/qeventdispatcher_glib.cpp:415
#23 0x00007f4ede12b89a in QGuiEventDispatcherGlib::processEvents
(this=0xea2dd0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#24 0x00007f4edf09fa9a in QEventLoop::processEvents (this=0x7fff8d613150,
flags=...) at kernel/qeventloop.cpp:149
#25 0x00007f4edf09fbee in QEventLoop::exec (this=0x7fff8d613150, flags=...) at
kernel/qeventloop.cpp:197
#26 0x00007f4edf0a21c2 in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1009
#27 0x00007f4ede0627d4 in QApplication::exec () at kernel/qapplication.cpp:3668
#28 0x00007f4edf7d96e0 in Akonadi::ResourceBase::init (r=0xff0960) at
/home/leo/kde/src/kdepimlibs/akonadi/resourcebase.cpp:245
#29 0x000000000042ba53 in Akonadi::ResourceBase::init<ImapResource> (argc=3,
argv=0x7fff8d613338) at /home/leo/kde/include/akonadi/resourcebase.h:186
#30 0x00000000004250a8 in main (argc=3, argv=0x7fff8d613338) at
/home/leo/kde/src/kdepim/runtime/resources/imap/imapresource.cpp:2027
(gdb) 


Reproducible: Sometimes

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