[PATCH 2.6.30] svcrdma: clean up error paths.

Steve Wise
2009-04-29T19:14:00Z

These fixes resolved crashes due to resource leak BUG_ON checks. The
resource leaks were detected by introducing asynchronous transport errors.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
---

net/sunrpc/xprtrdma/svc_rdma_sendto.c | 3 +++
net/sunrpc/xprtrdma/svc_rdma_transport.c | 3 ++-
2 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
index 6c26a67..8b510c5 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
@@ -183,6 +183,7 @@ static int fast_reg_xdr(struct svcxprt_rdma *xprt,

fatal_err:
printk("svcrdma: Error fast registering memory for xprt %p\n", xprt);
+ vec->frmr = NULL;
svc_rdma_put_frmr(xprt, frmr);
return -EIO;
}
@@ -516,6 +517,7 @@ static int send_reply(struct svcxprt_rdma *rdma,
"svcrdma: could not post a receive buffer, err=%d."
"Closing transport %p.\n", ret, rdma);
set_bit(XPT_CLOSE, &rdma->sc_xprt.xpt_flags);
+ svc_rdma_put_frmr(rdma, vec->frmr);
svc_rdma_put_context(ctxt, 0);
return -ENOTCONN;
}
@@ -606,6 +608,7 @@ static int send_reply(struct svcxprt_rdma *rdma,
return 0;

err:
+ svc_rdma_unmap_dma(ctxt);
svc_rdma_put_frmr(rdma, vec->frmr);
svc_rdma_put_context(ctxt, 1);
return -EIO;
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index 3d810e7..4b0c2fa 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -520,8 +520,9 @@ int svc_rdma_post_recv(struct svcxprt_rdma *xprt)
svc_xprt_get(&xprt->sc_xprt);
ret = ib_post_recv(xprt->sc_qp, &recv_wr, &bad_recv_wr);
if (ret) {
- svc_xprt_put(&xprt->sc_xprt);
+ svc_rdma_unmap_dma(ctxt);
svc_rdma_put_context(ctxt, 1);
+ svc_xprt_put(&xprt->sc_xprt);
}
return ret;