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Cisco Bug: CSCvt47587 - CUCM leaking SIP Publish Messages when receiving 404 from IM&P

Last Modified

Oct 05, 2020

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases


Description (partial)

The CUCM service exited and wrote a core file.  The reason for this was that its memory usage exceeded the limit of 4 GB.   The root cause of the memory leak was that CallManager was in an infinite loop sending out SIP Publish messages to the IM&P servers and continually re-trying those messages when they were not properly received at the IM&P side.  Each SIP Publish message used 1344 bytes, and the memory allocated for each message was never freed.  Eventually over time the total memory usage for ccm reached 4 GB and the service cored.

CCm service was crashed. Below is the back trace.

backtrace - CUCM
#0  0xf7784430 in __kernel_vsyscall ()
#1  0xf694f871 in raise () from /lib/
#2  0xf695114a in abort () from /lib/
#3  0xf6b71fe7 in __gnu_cxx::__verbose_terminate_handler() () from /usr/local/cm/lib/
#4  0xf6b6fe46 in __cxxabiv1::__terminate(void (*)()) () from /usr/local/cm/lib/
#5  0xf6b6fe83 in std::terminate() () from /usr/local/cm/lib/
#6  0xf6b6ffcb in __cxa_throw () from /usr/local/cm/lib/
#7  0xf6b70557 in operator new(unsigned int) () from /usr/local/cm/lib/
#8  0x098c4aa8 in DMRemoteDeviceRegisterUnRegister::createCopy (this=0xcd55cefc) at ../Include/TDCLdevicesigs.hpp:2880
#9  0x09f19b83 in SdlProcessBase::prepareSignal (this=0xcf8c0230, _sdlSignal=..., _signalPriority=@0xcd55cecc, _destPID=...) at SdlProcessBase.cpp:161
#10 0x09f18fa5 in SdlProcessBase::output (this=0xcf8c0230, rSignal=..., rProcessId=..., _signalPriority=kNormalPriority) at SdlProcessBase.cpp:236
#11 0x098af71c in SMDMSharedData::expireDeviceRegisterUnRegister (callerP=0xcf8c0230, deltaTime=1) at SMDMSharedData.cpp:2536
#12 0x086f2927 in DMPropagation::initialized_DeviceRegisterUnRegisterTimer (this=0xcf8c0230, s=...) at ProcessDMPropagation.cpp:343
#13 0x09f1adcf in SdlProcessBase::inputSignal (this=0xcf8c0230, rSignal=0xc43f36b0, traceType=SdlSystemLog::SignalThreadedNoPriorities, highPriority=0, normalPriority=0, lowPriority=0, veryLowPriority=0, lazyPriority=0, dbUpdatePriority=0) at SdlProcessBase.cpp:406
#14 0x09f48ac4 in SdlThreadedProcess::threadQueueReader (this=0xcf8c0230) at SdlThreadedProcess.cpp:110
#15 0x09f48cef in SdlThreadedProcess::threadQueueReaderInit (sdlThreadedProcess=0xcf8c0230) at SdlThreadedProcess.cpp:75
#16 0xf6906bc9 in start_thread () from /lib/
#17 0xf6a07c9e in clone () from /lib/
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