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fs: Fix error checking for d_hash_and_lookup() 

[ Upstream commit 0d5a4f8f77 ]

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: eedf265aa0 ("devpts: Make each mount of devpts an independent filesystem.")
Signed-off-by: Wang Ming <machel@vivo.com>
Message-Id: <20230713120555.7025-1-machel@vivo.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Wang Ming 2023-07-13 20:05:42 +08:00 committed by Greg Kroah-Hartman
parent 9ecf74a6f4
commit 077c70b3ce
1 changed files with 1 additions and 1 deletions
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2
fs/namei.c
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@ -2615,7 +2615,7 @@ 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;