diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index 720715ddaf48..30aec123a483 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -1151,7 +1151,7 @@ static void __dlm_master_lookup(struct dlm_ls *ls, struct dlm_rsb *r, int our_no
 		r->res_dir_nodeid = our_nodeid;
 	}
 
-	if (fix_master && dlm_is_removed(ls, r->res_master_nodeid)) {
+	if (fix_master && r->res_master_nodeid && dlm_is_removed(ls, r->res_master_nodeid)) {
 		/* Recovery uses this function to set a new master when
 		 * the previous master failed.  Setting NEW_MASTER will
 		 * force dlm_recover_masters to call recover_master on this
@@ -5283,7 +5283,7 @@ int dlm_recover_waiters_post(struct dlm_ls *ls)
 			case DLM_MSG_LOOKUP:
 			case DLM_MSG_REQUEST:
 				_request_lock(r, lkb);
-				if (is_master(r))
+				if (r->res_nodeid != -1 && is_master(r))
 					confirm_master(r, 0);
 				break;
 			case DLM_MSG_CONVERT:
@@ -5396,7 +5396,7 @@ void dlm_recover_purge(struct dlm_ls *ls, const struct list_head *root_list)
 
 	list_for_each_entry(r, root_list, res_root_list) {
 		lock_rsb(r);
-		if (is_master(r)) {
+		if (r->res_nodeid != -1 && is_master(r)) {
 			purge_dead_list(ls, r, &r->res_grantqueue,
 					nodeid_gone, &lkb_count);
 			purge_dead_list(ls, r, &r->res_convertqueue,
diff --git a/fs/dlm/lock.h b/fs/dlm/lock.h
index 4ed8d36f9c6d..b23d7b854ed4 100644
--- a/fs/dlm/lock.h
+++ b/fs/dlm/lock.h
@@ -66,6 +66,8 @@ int dlm_debug_add_lkb_to_waiters(struct dlm_ls *ls, uint32_t lkb_id,
 
 static inline int is_master(struct dlm_rsb *r)
 {
+	WARN_ON_ONCE(r->res_nodeid == -1);
+
 	return !r->res_nodeid;
 }
 
diff --git a/fs/dlm/member.c b/fs/dlm/member.c
index a7ee7fd2b9d3..c9661906568a 100644
--- a/fs/dlm/member.c
+++ b/fs/dlm/member.c
@@ -366,6 +366,8 @@ int dlm_is_member(struct dlm_ls *ls, int nodeid)
 
 int dlm_is_removed(struct dlm_ls *ls, int nodeid)
 {
+	WARN_ON_ONCE(!nodeid || nodeid == -1);
+
 	if (find_memb(&ls->ls_nodes_gone, nodeid))
 		return 1;
 	return 0;
diff --git a/fs/dlm/recover.c b/fs/dlm/recover.c
index c7afb428a2b4..2e1169c81c6e 100644
--- a/fs/dlm/recover.c
+++ b/fs/dlm/recover.c
@@ -452,10 +452,11 @@ static int recover_master(struct dlm_rsb *r, unsigned int *count, uint64_t seq)
 	int is_removed = 0;
 	int error;
 
-	if (is_master(r))
+	if (r->res_nodeid != -1 && is_master(r))
 		return 0;
 
-	is_removed = dlm_is_removed(ls, r->res_nodeid);
+	if (r->res_nodeid != -1)
+		is_removed = dlm_is_removed(ls, r->res_nodeid);
 
 	if (!is_removed && !rsb_flag(r, RSB_NEW_MASTER))
 		return 0;
@@ -664,7 +665,7 @@ int dlm_recover_locks(struct dlm_ls *ls, uint64_t seq,
 	int error, count = 0;
 
 	list_for_each_entry(r, root_list, res_root_list) {
-		if (is_master(r)) {
+		if (r->res_nodeid != -1 && is_master(r)) {
 			rsb_clear_flag(r, RSB_NEW_MASTER);
 			continue;
 		}
@@ -858,7 +859,7 @@ void dlm_recover_rsbs(struct dlm_ls *ls, const struct list_head *root_list)
 
 	list_for_each_entry(r, root_list, res_root_list) {
 		lock_rsb(r);
-		if (is_master(r)) {
+		if (r->res_nodeid != -1 && is_master(r)) {
 			if (rsb_flag(r, RSB_RECOVER_CONVERT))
 				recover_conversion(r);