linux-kernel - [PATCH 4.9 100/130] ceph: fix endianness of getattr mask in ceph_d

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Date:   Tue, 24 Jan 2017 08:55:40 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Jeff Layton <jlayton@...hat.com>,
        Sage Weil <sage@...hat.com>, Ilya Dryomov <idryomov@...il.com>
Subject: [PATCH 4.9 100/130] ceph: fix endianness of getattr mask in ceph_d_revalidate

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jeff Layton <jlayton@...hat.com>

commit 1097680d759918ce4a8705381c0ab2ed7bd60cf1 upstream.

sparse says:

    fs/ceph/dir.c:1248:50: warning: incorrect type in assignment (different base types)
    fs/ceph/dir.c:1248:50:    expected restricted __le32 [usertype] mask
    fs/ceph/dir.c:1248:50:    got int [signed] [assigned] mask

Fixes: 200fd27c8fa2 ("ceph: use lookup request to revalidate dentry")
Signed-off-by: Jeff Layton <jlayton@...hat.com>
Reviewed-by: Sage Weil <sage@...hat.com>
Signed-off-by: Ilya Dryomov <idryomov@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/ceph/dir.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1255,7 +1255,8 @@ static int ceph_d_revalidate(struct dent
 		struct ceph_mds_client *mdsc =
 			ceph_sb_to_client(dir->i_sb)->mdsc;
 		struct ceph_mds_request *req;
-		int op, mask, err;
+		int op, err;
+		u32 mask;
 
 		if (flags & LOOKUP_RCU)
 			return -ECHILD;
@@ -1270,7 +1271,7 @@ static int ceph_d_revalidate(struct dent
 			mask = CEPH_STAT_CAP_INODE | CEPH_CAP_AUTH_SHARED;
 			if (ceph_security_xattr_wanted(dir))
 				mask |= CEPH_CAP_XATTR_SHARED;
-			req->r_args.getattr.mask = mask;
+			req->r_args.getattr.mask = cpu_to_le32(mask);
 
 			err = ceph_mdsc_do_request(mdsc, NULL, req);
 			switch (err) {