From 48f8f711edf3868fe4faa28a19f07acb43532c4a Mon Sep 17 00:00:00 2001 From: Abhi Das Date: Wed, 12 Mar 2014 03:41:44 -0500 Subject: [PATCH] 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 Signed-off-by: Steven Whitehouse --- fs/gfs2/inode.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index ec455b92091f..b52ebf8553c2 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -1299,6 +1299,10 @@ static int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to) } tmp = gfs2_lookupi(dir, &gfs2_qdotdot, 1); + if (!tmp) { + error = -ENOENT; + break; + } if (IS_ERR(tmp)) { error = PTR_ERR(tmp); break; -- 2.20.1