From: Chuck Lever <chuck.lever@xxxxxxxxxx> commit e1ede312f17e96a9c5cda9aaa1cdcf442c1a5da8 upstream. We want to drain only the RQ first. Otherwise the transport can deadlock on ->close if there are outstanding Send completions. Fixes: 6d2d0ee27c7a ("xprtrdma: Replace rpcrdma_receive_wq ... ") Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx # v5.0+ Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/sunrpc/xprtrdma/verbs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -90,7 +90,7 @@ static void rpcrdma_xprt_drain(struct rp /* Flush Receives, then wait for deferred Reply work * to complete. */ - ib_drain_qp(ia->ri_id->qp); + ib_drain_rq(ia->ri_id->qp); drain_workqueue(buf->rb_completion_wq); /* Deferred Reply processing might have scheduled