[LU-9549] MR: assert on ln_state during shutdown

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: Lustre 2.10.0
• Severity: 3
• Assignee: Amir Shehata
• Reporter: Amir Shehata

Description

When shutting down, we could still be processing messages. lnet_parse() can be called, while simoultaneously the ln_state is changed from running to stopping. We need to handle this case with proper locking.