Bug ID 461580: Intermittent kernel panics when using telnet

Last Modified: Apr 10, 2019

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 AskF5 Article:
K16454

Symptoms

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

Impact

This causes the BIG-IP system to failover.

Conditions

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

Workaround

This issue has no workaround at this time.

Fix Information

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

Behavior Change