NFSv4.2: Clear FATTR4_WORD2_SECURITY_LABEL when done decoding

[ Upstream commit eef7314caf2d73a94b68ba293cd105154d3a664e ]

We need to clear the FATTR4_WORD2_SECURITY_LABEL bitmap flag
irrespective of whether or not the label is too long.

Fixes: aa9c2669626c ("NFS: Client implementation of Labeled-NFS")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index acfe5f4..8c5298e 100644 (file)
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -4234,6 +4234,7 @@ static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
                p = xdr_inline_decode(xdr, len);
                if (unlikely(!p))
                        return -EIO;
+               bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
                if (len < NFS4_MAXLABELLEN) {
                        if (label) {
                                if (label->len) {
@@ -4246,7 +4247,6 @@ static int decode_attr_security_label(struct xdr_stream *xdr, uint32_t *bitmap,
                                label->lfs = lfs;
                                status = NFS_ATTR_FATTR_V4_SECURITY_LABEL;
                        }
-                       bitmap[2] &= ~FATTR4_WORD2_SECURITY_LABEL;
                } else
                        printk(KERN_WARNING "%s: label too long (%u)!\n",
                                        __func__, len);