Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP WAM
Known Affected Versions:
11.0.0, 11.1.0, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1
Fixed In:
11.5.0, 11.4.1 HF4
Opened: Oct 25, 2013 Severity: 2-Critical Related Article:
K15705
TMM may core due to memory leak, and the core file indicates a large memory allocation to wam::wam_bitset_bits
Reduced capacity and possible cores for low memory.
This occurs when modifying the configuration. Each configuration change may leak a small amount of memory; scripts or other utilities which change the configuration frequently may encounter low memory situations. Whether the configuration will cause a leak is dependent on the configuration itself. This will be reflected in tmctl memory_usage_stat, with wam::wam_bitset_bits showing an abnormally high allocation. After a restart and configuration load, the current allocation should be zero; after running traffic the current allocation may be correct when non-zero.
None.
This release fixes a memory leak related to a large memory allocation to wam::wam_bitset_bits, so the leak no longer occurs.