apparmor/kernel-patches/v4.13/0004-apparmor-Fix-an-error-code-in-aafs_create.patch

From 8b3851c7b83f32f2be9d4b48371ddf033afedf62 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Thu, 13 Jul 2017 10:39:20 +0300
Subject: [PATCH 04/17] apparmor: Fix an error code in aafs_create()

We accidentally forgot to set the error code on this path.  It means we
return NULL instead of an error pointer.  I looked through a bunch of
callers and I don't think it really causes a big issue, but the
documentation says we're supposed to return error pointers here.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
(cherry picked from commit aee58bf341db52a3a3563c6b972bfd4fc2d41e46)
---
 security/apparmor/apparmorfs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/security/apparmor/apparmorfs.c b/security/apparmor/apparmorfs.c
index 853c2ec8e0c9..2caeb748070c 100644
--- a/security/apparmor/apparmorfs.c
+++ b/security/apparmor/apparmorfs.c
@@ -248,8 +248,10 @@ static struct dentry *aafs_create(const char *name, umode_t mode,
 
 	inode_lock(dir);
 	dentry = lookup_one_len(name, parent, strlen(name));
-	if (IS_ERR(dentry))
+	if (IS_ERR(dentry)) {
+		error = PTR_ERR(dentry);
 		goto fail_lock;
+	}
 
 	if (d_really_is_positive(dentry)) {
 		error = -EEXIST;
-- 
2.11.0