diff options
Diffstat (limited to 'net/sunrpc/clnt.c')
| -rw-r--r-- | net/sunrpc/clnt.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index d9eac706910..3e19d321067 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -1181,6 +1181,17 @@ call_verify(struct rpc_task *task) u32 *p = iov->iov_base, n; int error = -EACCES; + if ((task->tk_rqstp->rq_rcv_buf.len & 3) != 0) { + /* RFC-1014 says that the representation of XDR data must be a + * multiple of four bytes + * - if it isn't pointer subtraction in the NFS client may give + * undefined results + */ + printk(KERN_WARNING + "call_verify: XDR representation not a multiple of" + " 4 bytes: 0x%x\n", task->tk_rqstp->rq_rcv_buf.len); + goto out_eio; + } if ((len -= 3) < 0) goto out_overflow; p += 1; /* skip XID */ |