nfsd4: buffer-length check for SUPPATTR_EXCLCREAT



This was an omission from 8c18f205
"nfsd41: SUPPATTR_EXCLCREAT attribute".

Cc: Benny Halevy <bhalevy@primarydata.com>
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

parent 1406b916

fs/nfsd/nfs4xdr.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -2483,6 +2483,8 @@ nfsd4_encode_fattr(struct svc_fh fhp, struct svc_export exp,
		goto out;
		}
		if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) {
		if ((buflen -= 16) < 0)
		goto out_resource;
		WRITE32(3);
		WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0);
		WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1);