[Bug 163695] kio_sieve eats up 100% CPU when closing kmail

[Frank Osterfeld]

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http://bugs.kde.org/show_bug.cgi?id=163695         




------- Additional Comments From frank.osterfeld kdemail net  2008-06-15 23:38 -------
Seem backtrace below: It busy-loops in operationSuccessful(), which calls receiveData() forever in a while loop, which calls readLine which returns -1 all the time.
The return value isn't checked in receivedData() and true is returned.
Testing a fix now.

#0  KIO::TCPSlaveBase::readLine (this=0xbfffedbc, data=0xbfffe9cf "", len=511) at /source/kde/trunk/KDE/kdelibs/kio/kio/tcpslavebase.cpp:234
#1  0x03fd7ae7 in kio_sieveProtocol::receiveData (this=0xbfffedbc, waitForData=true, reparse= 0xbfffec6c) at /source/workspace/kdepimlibs-enterprise4/kioslave/sieve/sieve.cpp:1113
#2  0x03fd78d7 in kio_sieveProtocol::operationSuccessful (this=0xbfffedbc) at /source/workspace/kdepimlibs-enterprise4/kioslave/sieve/sieve.cpp:1189
#3  0x03fd7980 in kio_sieveProtocol::disconnect (this=0xbfffedbc, forcibly=false) at /source/workspace/kdepimlibs-enterprise4/kioslave/sieve/sieve.cpp:383
#4  0x03fd830b in kio_sieveProtocol::closeConnection (this=0xbfffedbc) at /source/workspace/kdepimlibs-enterprise4/kioslave/sieve/sieve.cpp:374
#5  0x005b0395 in KIO::SlaveBase::dispatchLoop (this=0xbfffedbc) at /source/kde/trunk/KDE/kdelibs/kio/kio/slavebase.cpp:292
#6  0x03fd91d0 in kdemain (argc=4, argv=0x40225d0) at /source/workspace/kdepimlibs-enterprise4/kioslave/sieve/sieve.cpp:81
#7  0x0000c7bb in launch (argc=4, _name=0x4016164 "kio_sieve", args=0x4016235 "", cwd=0x0, envc=0, envs=0x4016239 "", reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x10fdc "0") at /source/kde/trunk/KDE/kdelibs/kinit/kinit.cpp:674
#8  0x0000d399 in handle_launcher_request (sock=6) at /source/kde/trunk/KDE/kdelibs/kinit/kinit.cpp:1235
#9  0x0000dc31 in handle_requests (waitForPid=0) at /source/kde/trunk/KDE/kdelibs/kinit/kinit.cpp:1424
#10 0x0000e4ee in main (argc=3, argv=0xbffff4cc, envp=0xbffff4dc) at /source/kde/trunk/KDE/kdelibs/kinit/kinit.cpp:1882