linux-kernel - [PATCH] cifsd: fix a precedence bug in parse

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Date:   Thu, 18 Mar 2021 16:10:21 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Namjae Jeon <namjae.jeon@...sung.com>
Cc:     Hyunchul Lee <hyc.lee@...il.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Steve French <stfrench@...rosoft.com>,
        Ronnie Sahlberg <lsahlber@...hat.com>,
        linux-kernel@...r.kernel.org, linux-cifs@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] cifsd: fix a precedence bug in parse_dacl()

The shift has higher precedence than mask so this doesn't work as
intended.

Fixes: ef24dca82789 ("cifsd: add support for ACLs")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 fs/cifsd/smbacl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/cifsd/smbacl.c b/fs/cifsd/smbacl.c
index 8d8360ca4751..294c5a8fe9af 100644
--- a/fs/cifsd/smbacl.c
+++ b/fs/cifsd/smbacl.c
@@ -520,7 +520,7 @@ static void parse_dacl(struct smb_acl *pdacl, char *end_of_acl,
 			fattr->cf_gid;
 		acl_state.groups->aces[acl_state.groups->n++].perms.allow =
 			(mode & 0070) >> 3;
-		default_acl_state.group.allow = mode & 0070 >> 3;
+		default_acl_state.group.allow = (mode & 0070) >> 3;
 		default_acl_state.groups->aces[default_acl_state.groups->n].gid =
 			fattr->cf_gid;
 		default_acl_state.groups->aces[default_acl_state.groups->n++].perms.allow =
-- 
2.30.2