[LU-6517] lmv_disconnect_mdc dereferences a potential NULL pointer

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.8.0
• Severity: 3
• Assignee: WC Triage
• Reporter: Oleg Drokin

Description

smatch found this piece in lmv_disconnect_mdc:

        if (mdc_obd) {
                mdc_obd->obd_force = obd->obd_force;
                mdc_obd->obd_fail = obd->obd_fail;
                mdc_obd->obd_no_recov = obd->obd_no_recov;
        }

        if (lmv->targets_proc_entry != NULL)
                lprocfs_remove_proc_entry(mdc_obd->obd_name,
                                          lmv->targets_proc_entry);