How do I automatically generate a vmcore to help analyse soft lockups?
Issue
- My system is experiencing soft-lockups, e.g.
BUG: soft lockup - CPU#3 stuck for 11s! [frob:2342] - Red Hat Support requests a vmcore from the system at the time of the soft-lockups to aid in the analysis of the underlying problem.
- Monitoring and manual intervention to dump the vmcore during an occurrence by undertaking the methods described in the article What is the Sysrq facility and how do I use it? is not convenient.
- I need to have a vmcore dump generated automatically when a soft-lockup occurs.
Environment
- Red Hat Enterprise Linux 5.3 (or newer) - All architectures
- Red Hat Enterprise Linux 6 - All architectures
- Red Hat Enterprise Linux 7 - All architectures
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Soft lockup messages in log files.
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.
