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fs: Fix error checking for d_hash_and_lookup()

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[ 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 a4229f93bc
commit d412e9b34b
1 changed files with 1 additions and 1 deletions
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2
fs/namei.c
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@@ -2836,7 +2836,7 @@ int path_pts(struct path *path)
dput(path->dentry);
path->dentry = parent;
child = d_hash_and_lookup(parent, &this);
if (!child)
if (IS_ERR_OR_NULL(child))
return -ENOENT;
path->dentry = child;