[LU-20084] osp: fix kobject leak when LWP connect fails

• Type: Bug
• Resolution: Unresolved
• Priority: Minor
• Severity: 3
• Assignee: Hiroshi Nishida
• Reporter: Hiroshi Nishida

Description

lwp_setup() calls client_obd_setup() which creates the LDLM namespace via ldlm_namespace_new(). When lwp_obd_connect() subsequently fails, the out_dis error path calls class_disconnect() without first calling ldlm_namespace_free_prior().

This leaves LDLM_NS_STOPPING unset, so when client_obd_cleanup() later calls ldlm_namespace_free_post(), the pool recalc race can cause ldlm_namespace_sysfs_unregister() to hang and the namespace kobject to be leaked under /sys/fs/lustre/ldlm/namespaces/.

Same pattern as LU-20079 in client_connect_import(), but in lwp_obd_connect() — triggered by MDT mount failures rather than client mount failures.