Bug ID 461580: Intermittent kernel panics when using telnet

Last Modified: Nov 07, 2022

Bug Tracker

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

Known Affected Versions:
11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4

Fixed In:
11.5.1 HF5, 11.5.0 HF5, 11.4.1 HF6, 11.4.0 HF8, 11.3.0 HF10, 11.2.1 HF12

Opened: May 09, 2014
Severity: 3-Major
Related Article:


The kernel panics with a log entry similar to this: slot1/APULTXC102 crit kernel: kernel BUG at drivers/char/n_tty.c:1713!


This causes the BIG-IP system to failover.


It appears to require a use of telnet on the box, possibly with an external monitor that uses telnet.


This issue has no workaround at this time.

Fix Information

Resolved intermittent kernel panic that causes crash using telnet with external monitor.

Behavior Change