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SUNRPC: Fix corruption of xdr->nwords in xdr_copy_to_scratch

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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>
This commit is contained in:
Trond Myklebust 2016-09-20 14:33:42 -04:00 committed by Anna Schumaker
parent 78d04af499
commit ace0e14f4f
1 changed files with 5 additions and 2 deletions
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7
net/sunrpc/xdr.c
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@ -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))