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Cisco Bug: CSCuj49610 - Both active and standby LC memory leak@grd_hccp_api_idx_key_alloc

Last Modified

Jan 29, 2017

Products (1)

  • Cisco uBR10000 Series Universal Broadband Routers

Known Affected Releases

15.3(3)S

Description (partial)

Symptom:
Detect memory leaks on LC (both on active and standby) after do many times of LCHA. Leaks chunk will show as:
AllocPC  Address  Size  Parent   Name
 2CF54DC 29638274   144 296284D8 (GUARDIAN_IDX_KE)
 2CF54DC 29638314   144 296284D8 (GUARDIAN_IDX_KE)
 2CF54DC 296383B4   144 296284D8 (GUARDIAN_IDX_KE)

Conditions:
Continuously do PRE switchover, LC switchover and linecard 'hw-module' shutdown for many times.
The issue happened in the scenario of:
1. '(no)hw-module shutdown' will cause the modular host to manage SPA failed to set BPI for DS channenls.
2. LC switchover will recover the inner data of BPI to re-set.
3. 'set failure' will cause the inner DB de-queue but missing release. So that the memory leaks happened.
While it happened, only one element (inner data 144 bytes) leaks every time.
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