[PATCH AUTOSEL 5.2 15/63] SUNRPC: RPC level errors should always set task->tk_rpc_status

Sasha Levin
2019-10-01T16:57:42Z

From: Trond Myklebust <trondmy@gmail.com>

[ Upstream commit 714fbc73888f59321854e7f6c2f224213923bcad ]

Ensure that we set task->tk_rpc_status for all RPC level errors so that
the caller can distinguish between those and server reply status errors.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/sunrpc/clnt.c | 6 +++---
net/sunrpc/sched.c | 5 ++++-
2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index fbb85ea24ea0f..8f32f73614111 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1760,7 +1760,7 @@ call_allocate(struct rpc_task *task)
return;
}

- rpc_exit(task, -ERESTARTSYS);
+ rpc_call_rpcerror(task, -ERESTARTSYS);
}

static int
@@ -2480,7 +2480,7 @@ rpc_encode_header(struct rpc_task *task, struct xdr_stream *xdr)
return 0;
out_fail:
trace_rpc_bad_callhdr(task);
- rpc_exit(task, error);
+ rpc_call_rpcerror(task, error);
return error;
}

@@ -2547,7 +2547,7 @@ rpc_decode_header(struct rpc_task *task, struct xdr_stream *xdr)
return -EAGAIN;
}
out_err:
- rpc_exit(task, error);
+ rpc_call_rpcerror(task, error);
return error;

out_unparsable:
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index a2c1148127172..0b11971dec79b 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -914,8 +914,10 @@ static void __rpc_execute(struct rpc_task *task)
/*
* Signalled tasks should exit rather than sleep.
*/
- if (RPC_SIGNALLED(task))
+ if (RPC_SIGNALLED(task)) {
+ task->tk_rpc_status = -ERESTARTSYS;
rpc_exit(task, -ERESTARTSYS);
+ }

/*
* The queue->lock protects against races with
@@ -951,6 +953,7 @@ static void __rpc_execute(struct rpc_task *task)
*/
dprintk("RPC: %5u got signal\n", task->tk_pid);
set_bit(RPC_TASK_SIGNALLED, &task->tk_runstate);
+ task->tk_rpc_status = -ERESTARTSYS;
rpc_exit(task, -ERESTARTSYS);
}
dprintk("RPC: %5u sync task resuming\n", task->tk_pid);
--
2.20.1