From: Trond Myklebust <trondmy@gmail.com>
Date: Thu, 12 Sep 2019 08:06:51 -0400
Subject: SUNRPC: RPC level errors should always set task->tk_rpc_status
Git-commit: 714fbc73888f59321854e7f6c2f224213923bcad
Patch-mainline: 5.4-rc1
References: bnc#1151927 5.3.6

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: Jiri Slaby <jslaby@suse.cz>
---
 net/sunrpc/clnt.c  |    6 +++---
 net/sunrpc/sched.c |    5 ++++-
 2 files changed, 7 insertions(+), 4 deletions(-)

--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -1837,7 +1837,7 @@ call_allocate(struct rpc_task *task)
 		return;
 	}
 
-	rpc_exit(task, -ERESTARTSYS);
+	rpc_call_rpcerror(task, -ERESTARTSYS);
 }
 
 static int
@@ -2561,7 +2561,7 @@ rpc_encode_header(struct rpc_task *task,
 	return 0;
 out_fail:
 	trace_rpc_bad_callhdr(task);
-	rpc_exit(task, error);
+	rpc_call_rpcerror(task, error);
 	return error;
 }
 
@@ -2628,7 +2628,7 @@ out_garbage:
 		return -EAGAIN;
 	}
 out_err:
-	rpc_exit(task, error);
+	rpc_call_rpcerror(task, error);
 	return error;
 
 out_unparsable:
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -930,8 +930,10 @@ static void __rpc_execute(struct rpc_tas
 		/*
 		 * 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
@@ -967,6 +969,7 @@ static void __rpc_execute(struct rpc_tas
 			 */
 			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);