[Cluster-devel] [PATCH 05/11] gfs2_edit: Fix null pointer dereference in dump_journal

[Andrew Price <anprice@redhat.com>]

Spotted by coverity: Dereferencing a pointer that might be null "(void
*)jbuf" when calling "fsck_readi"

Signed-off-by: Andrew Price <anprice@redhat.com>
---
 gfs2/edit/hexedit.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/gfs2/edit/hexedit.c b/gfs2/edit/hexedit.c
index b05a7d6..7a17c04 100644
--- a/gfs2/edit/hexedit.c
+++ b/gfs2/edit/hexedit.c
@@ -2672,6 +2672,10 @@ static void dump_journal(const char *journal)
 		j_bh = bread(&sbd, jblock);
 		j_inode = inode_get(&sbd, j_bh);
 		jbuf = malloc(sbd.bsize);
+		if (jbuf == NULL) {
+			fprintf(stderr, "Out of memory\n");
+			exit(-1);
+		}
 	}
 
 	for (jb = 0; jb < j_size; jb += (sbd.gfs1 ? 1:sbd.bsize)) {
-- 
1.7.6.4