3.19.8-ckt4 -stable review patch.  If anyone has any objections, please let me 
know.

------------------

From: Trond Myklebust <trond.mykleb...@primarydata.com>

commit 88de6af24f2b48b06c514d3c3d0a8f22fafe30bd upstream.

req->rq_private_buf isn't initialised when xprt_setup_backchannel calls
xprt_free_allocation.

Fixes: fb7a0b9addbdb ("nfs41: New backchannel helper routines")
Signed-off-by: Trond Myklebust <trond.mykleb...@primarydata.com>
Signed-off-by: Kamal Mostafa <ka...@canonical.com>
---
 net/sunrpc/backchannel_rqst.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sunrpc/backchannel_rqst.c b/net/sunrpc/backchannel_rqst.c
index 9dd0ea8d..28504df 100644
--- a/net/sunrpc/backchannel_rqst.c
+++ b/net/sunrpc/backchannel_rqst.c
@@ -60,7 +60,7 @@ static void xprt_free_allocation(struct rpc_rqst *req)
 
        dprintk("RPC:        free allocations for req= %p\n", req);
        WARN_ON_ONCE(test_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state));
-       xbufp = &req->rq_private_buf;
+       xbufp = &req->rq_rcv_buf;
        free_page((unsigned long)xbufp->head[0].iov_base);
        xbufp = &req->rq_snd_buf;
        free_page((unsigned long)xbufp->head[0].iov_base);
-- 
1.9.1

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