Memory Leaks in Logging Discriminator

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Updated:September 23, 2015

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Memory Leaks in Logging Discriminator

Memory Leaks in Logging Discriminator

First Published: 2015-09-25

Last Updated: 2015-09-25

Cisco devices configured with logging discriminator may experience a memory leak or crash. When a logging discriminator is configured and applied to a device, memory leak is observed under heavy syslog or debug output. The rate of the leak is dependent on the number of logs being produced. In extreme cases, it is possible that the device might crash. To avoid memory leak, disable the logging discriminator feature.

This document lists the caveats for memory leaks for logging discriminator.

Note: The release number in Fixed Releases column may indicate a future release.

■CSCur45606

Symptom Logging discriminator feature is broken and causes memory leak on the following platforms. Regression bug caused by the fix for bug CSCuq17177 in EEM code.

Workaround Disable logging discriminator feature until it’s fixed.

Table 1 Platforms, Affected Releases, and Fixed Releases for CSCur45606
Platforms
Affected Releases
Fixed Releases
Catalyst 4500, Catalyst 3850, 5760
15.2(3)E1/3.7.1E
15.2(3)E2/3.7.2E
15.2(2)E2/3.6.2.E
15.2(2a)E2/3.6.2aE
15.2(2)E3/3.6.3E
15.2(3)E3/3.7.3.E
15.2(4)E/3.8.0.E
XE 16.1.0.
3.6.3.E ES
ASR 1000
15.5(2)S1/3.15.1
15.5(3)S1/3.16.1
15.5(1)S2/3.14.2
15.5(2)S2/3.15.2
T-Train (c2900, c2950, c180, c3240, c7200)
15.5(3)M
15.5(2)T1
15.5(3)M1
15.5(2)T2
ISR 4400
15.5(2)S1/3.15.1
15.5(3)S1/3.16.1
15.5(1)S2/3.14.2
15.5(2)S2/3.15.2
ISR 3945
15.5(2)T1
15.5(2)T2
ISR 800
15.5(2)T1
15.5(2)T2
Catalyst 6500
Not affected.
Not applicable.

■CSCur28336

Symptom Memory leak and possible crash when using a logging discriminator. Regression bug caused by the fix for bugs CSCuc21859, CSCul35472.

Workaround Disable logging discriminator feature until it’s fixed.

Table 2 Platforms, Affected Releases, and Fixed Releases for CSCur28336
Platforms
Affected Releases
Fixed Releases
Catalyst 4500, Catalyst 3850, 5760
15.0(1)EZ/3.3.0SE
15.2(1)E/3.5.0E
15.2(2)E/3.6.0E
15.2(3)E/3.7.0E
15.2(2)E4/3.6.4E
15.2(3)E3/3.7.3E
15.2(4)E/3.8.0E
3.6.3.E ES
ASR 1000
15.3(3)S/3.10.0S
15.4(3)S3/3.13.3S
15.5(1)S/3.14.0S
15.5(2)S/3.15.0S
15.5(3)S/3.16.0S
T-Train (c2900, c2950, c180, c3240, c7200)
15.4(1)T
15.4(3)M
15.5(1)T
15.5(2)T
15.5(3)M
ISR 4400
15.3(3)S/3.10.0S
15.4(3)S3/3.13.3S
15.5(1)S/3.14.0S
15.5(2)S/3.15.0S
15.5(3)S/3.16.0S
ISR 3945
15.4(1)T
15.5(1)T
15.5(2)T
ISR 800
15.4(1)T
15.5(1)T
15.5(2)T
Catalyst 6500
15.1(1)SY
15.1(2)SY
15.2(1)SY
15.2(2)SY
Not applicable. This is a preventive fix.

■CSCup02712

Symptom Memory leak and possible crash when using a logging discriminator.

Workaround Disable logging discriminator feature until it’s fixed.

Table 3 Platforms, Affected Releases, and Fixed Releases for CSCup02712
Platforms
Affected Releases
Fixed Releases
Catalyst 4500, Catalyst 3850, 5760
Not affected.
Not applicable.
ASR 1000
15.3(3)S/3.10.0S
15.4(3)S3/3.13.3S
15.5(1)S/3.14.0S
15.5(2)S/3.15.0S
15.5(3)S/3.16.0S
T-Train (c2900, c2950, c180, c3240, c7200)
Not affected.
Not applicable.
ISR 4400
Not affected.
Not applicable.
ISR 3945
Not affected.
Not applicable.
ISR 800
Not affected.
Not applicable.
Catalyst 6500
Not affected.
Not applicable.

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