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Cisco Bug: CSCvu47079 - Memory leak in "VTEMPLATE bkgrnd" process leading to isis_delete_isisidb

Last Modified

Jun 18, 2020

Products (1)

  • Cisco ASR 1000 Series Aggregation Services Routers

Known Affected Releases

16.9.5

Description (partial)

Symptom:
A very slow memory leak can be seen on "VTEMPLATE Backgr" process on ASR1K router running 16.9.5 code.
The leak is very slow and it can be as low as 3-5 mb in the span of 2 weeks.
#show processes memory sorted | i VTEMP
 491   0 6354654496 5896917496   89566896     894852          0 VTEMPLATE Backgr
 147   0  185207800  901670656      56760     328836          0 VTEMPLATE BKG OW
 392   0          0          0      29944          0          0 VTEMPLATE IPC fl


Also, the following error message (with traceback) will be generated by the router:

%SYS-2-CHUNKSIBLINGS: Attempted to destroy chunk with siblings, chunk 80007F3C08842F48. -Process= "VTEMPLATE BKG OW Mgr", ipl= 0, pid= 147
-Traceback= 1#75078d9115a46d657eccdf9a3a803950  :5653D496E000+6803253 :5653D496E000+6803661 iosd_shr_m_uk9_ROUTING_crb:7F3E147B0000+5F5AC8 :5653D496E000+538D11A :5653D496E000+A1419C8 :5653D496E000+6B63EFD :5653D496E000+6B636CD :5653D496E000+BE8005C :5653D496E000+BE7FF4C :5653D496E000+6B550B9

Conditions:
ASR1K router running "asr1000-universalk9.16.09.05.SPA.bin" code.
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