diff options
| author | Chuck Lever <chuck.lever@oracle.com> | 2016-06-29 13:53:52 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2016-07-11 15:50:43 -0400 |
| commit | a54d4059e5f356c522aabfd38563ab6e64773263 (patch) | |
| tree | 9a6393703f0b164aea80960d0096cbedf40a255c /net/sunrpc/xprtrdma/fmr_ops.c | |
| parent | 7a89f9c626e337ba6528d8a2829b228c933877fb (diff) | |
| download | linux-stable-a54d4059e5f356c522aabfd38563ab6e64773263.tar.gz linux-stable-a54d4059e5f356c522aabfd38563ab6e64773263.tar.bz2 linux-stable-a54d4059e5f356c522aabfd38563ab6e64773263.zip | |
xprtrdma: Chunk list encoders must not return zero
Clean up, based on code audit: Remove the possibility that the
chunk list XDR encoders can return zero, which would be interpreted
as a NULL.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc/xprtrdma/fmr_ops.c')
| -rw-r--r-- | net/sunrpc/xprtrdma/fmr_ops.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/sunrpc/xprtrdma/fmr_ops.c b/net/sunrpc/xprtrdma/fmr_ops.c index aae4c372a40f..bc5f4a1e3122 100644 --- a/net/sunrpc/xprtrdma/fmr_ops.c +++ b/net/sunrpc/xprtrdma/fmr_ops.c @@ -246,6 +246,8 @@ fmr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg, } mw->mw_nents = i; mw->mw_dir = rpcrdma_data_dir(writing); + if (i == 0) + goto out_dmamap_err; if (!ib_dma_map_sg(r_xprt->rx_ia.ri_device, mw->mw_sg, mw->mw_nents, mw->mw_dir)) |