Symptom

Catalyst 9300 might reload due to the memory leak in TMPFS (RAMDISK). In the output of "show platform software mount switch active R0" the memory used by /tmp keeps increasing. The leak is affecting all stack members. Eventually, the switch may reload unexpectedly. Top reasons for reload include: last reload reason: critical process cmand fault on rp_0_0 (rc=134) last reload reason: critical software exception last reload reason: critical process sessmgrd fault on rp_0_0 (rc=135) last reload reason: critical process plogd fault on rp_0_0 (rc=135) last reload reason: critical process fed fault on fp_0_0 (rc=135) last reload reason: critical process cmand fault on rp_0_0 (rc=135) last reload reason: cpu usage due to memory pressure exceeds threshold

Conditions

No specific conditions. The memory leak is caused by a file which is taking up more and more space in "/tmp".

Workaround

Upgrade to a fixed version. Removing the file from Linux shell (contact TAC) could be a workaround to buy some time before reload, but the file is created again.

Further Problem Description

PSIRT Evaluation

The Cisco PSIRT has evaluated this issue and does not meet the criteria for PSIRT ownership or involvement. This issue will be addressed via normal resolution channels. If you believe that there is new information that would cause a change in the severity of this issue, please contact psirt@cisco.com for another evaluation. Additional information on Cisco''s security vulnerability policy can be found at the following URL: http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html