When mountd.c parses the nfsv4 root line(s) in /etc/exports, it

allocates data structures that are never linked into the tree or free'd.
As such, mountd would leak memory every time it parsed an nfsv4 root line.
This patch frees up those structures to plug the leak.

Approved by:	kib (mentor)

1 files changed, 13 insertions, 1 deletions

diff --git a/usr.sbin/mountd/mountd.c b/usr.sbin/mountd/mountd.c
index b6ca3cd32e6f..6fcb88447910 100644
--- a/usr.sbin/mountd/mountd.c
+++ b/usr.sbin/mountd/mountd.c
@@ -1414,8 +1414,20 @@ get_exportlist_one()
 		/*
 		 * For V4: don't enter in mount lists.
 		 */
-		if (v4root_phase > 0 && v4root_phase <= 2)
+		if (v4root_phase > 0 && v4root_phase <= 2) {
+			/*
+			 * Since these structures aren't used by mountd,
+			 * free them up now.
+			 */
+			if (ep != NULL)
+				free_exp(ep);
+			while (tgrp != NULL) {
+				grp = tgrp;
+				tgrp = tgrp->gr_next;
+				free_grp(grp);
+			}
 			goto nextline;
+		}
 
 		/*
 		 * Success. Update the data structures.