diff options
Diffstat (limited to 'net/sunrpc/auth_gss/svcauth_gss.c')
| -rw-r--r-- | net/sunrpc/auth_gss/svcauth_gss.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c index a54a7a3d28f5..7b1ee5a0b03c 100644 --- a/net/sunrpc/auth_gss/svcauth_gss.c +++ b/net/sunrpc/auth_gss/svcauth_gss.c @@ -838,6 +838,14 @@ unwrap_integ_data(struct svc_rqst *rqstp, struct xdr_buf *buf, u32 seq, struct g struct xdr_netobj mic; struct xdr_buf integ_buf; + /* NFS READ normally uses splice to send data in-place. However + * the data in cache can change after the reply's MIC is computed + * but before the RPC reply is sent. To prevent the client from + * rejecting the server-computed MIC in this somewhat rare case, + * do not use splice with the GSS integrity service. + */ + clear_bit(RQ_SPLICE_OK, &rqstp->rq_flags); + /* Did we already verify the signature on the original pass through? */ if (rqstp->rq_deferred) return 0; |