[LU-15512] Infinite loop in lnet_discover_peer_locked()

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.15.0
• Affects Version/s: Lustre 2.15.0
• Severity: 3
• Assignee: Chris Horn
• Reporter: Chris Horn

Description

The fix from LU-13895 was incomplete. There is a case where lnet_discover_peer_locked() can enter an infinite loop. We need to check if the peer NI undergoing discovery has been deleted.