GFS2: check NULL return value in gfs2_ok_to_move
gfs2_lookupi() can return NULL if the path to the root is broken by
another rename/rmdir. In this case gfs2_ok_to_move() must check for
this NULL pointer and return error.
Resolves: rhbz#1060246
Signed-off-by: Abhi Das <adas@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index ec455b9..b52ebf8 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -1299,6 +1299,10 @@
}
tmp = gfs2_lookupi(dir, &gfs2_qdotdot, 1);
+ if (!tmp) {
+ error = -ENOENT;
+ break;
+ }
if (IS_ERR(tmp)) {
error = PTR_ERR(tmp);
break;