4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wang Ming <machel@xxxxxxxx>
[ Upstream commit 0d5a4f8f775ff990142cdc810a84eae078589d27 ]
The d_hash_and_lookup() function returns error pointers or NULL.
Most incorrect error checks were fixed, but the one in int path_pts()
was forgotten.
Fixes: eedf265aa003 ("devpts: Make each mount of devpts an independent filesystem.")
Signed-off-by: Wang Ming <machel@xxxxxxxx>
Message-Id: <20230713120555.7025-1-machel@xxxxxxxx>
Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
fs/namei.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/namei.c b/fs/namei.c
index 0dbe38afef29b..60b57e0bc1742 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2613,7 +2613,7 @@ int path_pts(struct path *path)
this.name = "pts";
this.len = 3;
child = d_hash_and_lookup(parent, &this);
- if (!child)
+ if (IS_ERR_OR_NULL(child))
return -ENOENT;
path->dentry = child;
--
2.40.1
