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Cisco Bug: CSCvu75206 - NCS540L Memory leak in the optics_driver when show controllers <> phy command is executed

Last Modified

Sep 02, 2020

Products (1)

  • Cisco Network Convergence System 540 Series Routers

Known Affected Releases

7.0.2.CE 7.1.1.CE

Description (partial)

Symptom:
Each time when show controllers <> phy command is executed, 9KB memory leak is visible under optics_driver process

Example output:

RP/0/RP0/CPU0:bru-n540x-2#show processes memory | inc optics_driver
224           388      69040        132       36312 optics_driver

RP/0/RP0/CPU0:bru-n540x-2#show controllers tenGigE 0/0/0/22 phy
SFP EEPROM  port: 22
	Xcvr Type: SFP
[...]

RP/0/RP0/CPU0:bru-n540x-2#show processes memory | inc optics_driver
224           388      69040        132       36321 optics_driver <-- +9KB of allocated memory

When this command is extensively executed by some script,  process will crash if it will hit rlimit value (300MB).

Conditions:
NCS540L running LNT
show controllers <> phy command executed
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