Bug ID 1231357: Unexpected reboot might occur on r5000/r10000 Series

Last Modified: May 29, 2024

Affected Product(s):
F5OS F5OS(all modules)

Known Affected Versions:
F5OS-A 1.3.1, F5OS-A 1.3.2, F5OS-A 1.4.0

Fixed In:
F5OS-A 1.5.0

Opened: Jan 27, 2023

Severity: 2-Critical

Related Article: K000132865


An unexpected operating system reboot might occur on r5000/r10000 Series. After the system reboots, in the /var/crash/ directory there will be a new directory created that is named with a timestamp corresponding to the reboot. In that new directory, a file vmcore-dmesg.txt is available with the following error message: CPU 0: Machine Check Exception: 5 Bank 4: ba00000056000402


When the reboot occurs, the entire system will reboot and all tenants will stop processing traffic until the reboot is complete. The system will operate normally after the reboot.


Unexpected system reboot.



Fix Information

This issue has been corrected.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips