From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A93E12E63B for ; Wed, 20 Sep 2023 12:10:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 329A2C433C9; Wed, 20 Sep 2023 12:10:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1695211820; bh=7/licW5RnixAnrLZHyC7HwjFpy0ZashubagyjXUkkHI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tVrxQvS2QVz/mtDF7eYrBvqCaKgtqZ52uT3EYBrci25HtfpORvNgJ2r4OkmF1+RVK xux+CJ2QhxfPda3TTssF+0kwvs08+QASmu4PCRUcDkZGnkMemJGSoccTzi86vXvvVR dbt3x73k09XNZxPbO/L3CPS/Ua9j8pvF6vkhWZoI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Wang Ming , Christian Brauner , Sasha Levin Subject: [PATCH 4.19 048/273] fs: Fix error checking for d_hash_and_lookup() Date: Wed, 20 Sep 2023 13:28:08 +0200 Message-ID: <20230920112847.903409961@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230920112846.440597133@linuxfoundation.org> References: <20230920112846.440597133@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Wang Ming [ 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 Message-Id: <20230713120555.7025-1-machel@vivo.com> Signed-off-by: Christian Brauner Signed-off-by: Sasha Levin --- 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