Bug ID 984965: While intentionally exiting, sshplugin may invoke functions out of sequence and crash

Last Modified: Jul 26, 2021

Bug Tracker

Affected Product:  See more info
BIG-IP AFM(all modules)

Known Affected Versions:
13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 14.0.0,,,,,, 14.0.1,, 14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,, 15.0.0, 15.0.1,,,,, 15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 16.0.0,, 16.0.1,,, 16.1.0

Opened: Jan 19, 2021
Severity: 3-Major


The sshplugin process used by the AFM module may continually restart and deposit a large number of core-dump files, displaying a SIGSEGV Segmentation fault. In the file /var/log/sshplugin.start, errors may be logged including these lines: shmget name:/var/run/tmm.mp.sshplugin18, key:0xeb172db6, size:7, total:789184 : Invalid argument tm_register failed: Bad file descriptor


-- Extra processing load from relaunching sshplugin processes. -- The large number of core files might fill up /var/core.


-- AFM provisioned and in use. -- Heavy system load makes problem more likely.


First, attempt a clean process restart: # bigstart restart sshplugin If that is not effective, rebooting the entire system may clear the condition.

Fix Information


Behavior Change