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authorTrond Myklebust <trond.myklebust@primarydata.com>2016-09-20 14:33:42 -0400
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2016-09-22 17:12:31 -0400
commitace0e14f4fe5f5944d27d8bd4d3492ad0d2b09e2 (patch)
tree092e8ffd8c0350a79d40be6b6318d20c8b61b87c /net/sunrpc/xdr.c
parent78d04af4995a1358039f4406bd31c28faedfa030 (diff)
SUNRPC: Fix corruption of xdr->nwords in xdr_copy_to_scratch
When we copy the first part of the data, we need to ensure that value of xdr->nwords is updated as well. Do so by calling __xdr_inline_decode() Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/xdr.c')
-rw-r--r--net/sunrpc/xdr.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c
index c4f3cc0c0775..b8444860edf5 100644
--- a/net/sunrpc/xdr.c
+++ b/net/sunrpc/xdr.c
@@ -859,12 +859,15 @@ EXPORT_SYMBOL_GPL(xdr_set_scratch_buffer);
static __be32 *xdr_copy_to_scratch(struct xdr_stream *xdr, size_t nbytes)
{
__be32 *p;
- void *cpdest = xdr->scratch.iov_base;
+ char *cpdest = xdr->scratch.iov_base;
size_t cplen = (char *)xdr->end - (char *)xdr->p;
if (nbytes > xdr->scratch.iov_len)
return NULL;
- memcpy(cpdest, xdr->p, cplen);
+ p = __xdr_inline_decode(xdr, cplen);
+ if (p == NULL)
+ return NULL;
+ memcpy(cpdest, p, cplen);
cpdest += cplen;
nbytes -= cplen;
if (!xdr_set_next_buffer(xdr))