Last Modified: Jul 18, 2026
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
12.0.0, 12.0.0 hf1, 12.0.0 hf2, 12.0.0 hf3, 12.0.0 hf4
Fixed In:
12.1.0
Opened: Sep 01, 2015 Severity: 3-Major Related Article:
K58453344
The tmm crashes, /var/log/ltm contains the following error message: "Tcl Object ## is currently on free list"
Traffic disrupted while tmm restarts.
The issue occurs when there is an LTM policy assigned to a virtual server, the policy actions utilizes Tcl command substitutions, and the command substitution is unsuccessful.
None.
The tmm process no longer restarts when there is an LTM policy assigned to a virtual server, the policy actions utilizes Tcl command substitutions, and the command substitution is unsuccessful.