From: Karel Zak <kzak@redhat.com>
Date: Wed, 15 May 2019 14:28:31 +0000 (+0200)
Subject: libblkid: make partitions reference counting more robust [coverity scan]
X-Git-Tag: v2.34-rc2~67
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5b3b21128c5373c03d7712cb3b26b4f11717dc47;p=thirdparty%2Futil-linux.git

libblkid: make partitions reference counting more robust [coverity scan]

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/libblkid/src/partitions/partitions.c b/libblkid/src/partitions/partitions.c
index 299454765e..f12638e764 100644
--- a/libblkid/src/partitions/partitions.c
+++ b/libblkid/src/partitions/partitions.c
@@ -313,13 +313,16 @@ static void blkid_probe_set_partlist(blkid_probe pr, blkid_partlist ls)
 
 static void ref_parttable(blkid_parttable tab)
 {
-	tab->nparts++;
+	if (tab)
+		tab->nparts++;
 }
 
 static void unref_parttable(blkid_parttable tab)
 {
-	tab->nparts--;
+	if (!tab)
+		return;
 
+	tab->nparts--;
 	if (tab->nparts <= 0) {
 		list_del(&tab->t_tabs);
 		free(tab);