Bug ID 1103833: Tmm core with SIGSEGV in gtmpoolmbr_UpdateStringProc

Last Modified: Apr 17, 2024

Affected Product(s):
BIG-IP GTM(all modules)

Known Affected Versions:
14.1.4.4, 14.1.4.5, 14.1.4.6, 14.1.5, 14.1.5.1, 14.1.5.2, 14.1.5.3, 14.1.5.4, 14.1.5.6, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8, 15.1.8.1, 15.1.8.2, 15.1.9, 15.1.9.1, 15.1.10, 15.1.10.2, 15.1.10.3, 15.1.10.4, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2, 17.0.0, 17.0.0.1, 17.0.0.2

Opened: Apr 29, 2022

Severity: 2-Critical

Symptoms

Tmm cored with SIGSEGV.

Impact

Traffic disrupted while tmm restarts.

Conditions

-- iRule pool command with member which is determined at run-time -- A pool member is used for the iRule -- The previous pool member is deleted and then re-created using the same name -- That pool member is picked again for the next iRule event.

Workaround

Use a string command to category the pool member variable like this: pool dnspool member [string trim $pool_member]

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips