diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c
index e8b881596baf..34b8771d1eda 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c
@@ -735,7 +735,9 @@ void iwl_mvm_vif_dbgfs_add_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 {
 	struct dentry *dbgfs_dir = vif->debugfs_dir;
 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-	char buf[100];
+	char buf[3 * 3 + 11 + (NL80211_WIPHY_NAME_MAXLEN + 1) +
+		 (7 + IFNAMSIZ + 1) + 6 + 1];
+	char name[7 + IFNAMSIZ + 1];
 
 	/* this will happen in monitor mode */
 	if (!dbgfs_dir)
@@ -748,10 +750,11 @@ void iwl_mvm_vif_dbgfs_add_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 	 * find
 	 * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
 	 */
-	snprintf(buf, 100, "../../../%pd3/iwlmvm", dbgfs_dir);
+	snprintf(name, sizeof(name), "%pd", dbgfs_dir);
+	snprintf(buf, sizeof(buf), "../../../%pd3/iwlmvm", dbgfs_dir);
 
-	mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
-						     mvm->debugfs_dir, buf);
+	mvmvif->dbgfs_slink =
+		debugfs_create_symlink(name, mvm->debugfs_dir, buf);
 }
 
 void iwl_mvm_vif_dbgfs_rm_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif)