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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:   Tue,  1 Oct 2019 12:40:37 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Trond Myklebust <trondmy@...il.com>,
        Trond Myklebust <trond.myklebust@...merspace.com>,
        Anna Schumaker <Anna.Schumaker@...app.com>,
        Sasha Levin <sashal@...nel.org>, linux-nfs@...r.kernel.org,
        netdev@...r.kernel.org
Subject: [PATCH AUTOSEL 5.2 15/63] SUNRPC: RPC level errors should always set task->tk_rpc_status

From: Trond Myklebust <trondmy@...il.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@...merspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@...app.com>
Signed-off-by: Sasha Levin <sashal@...nel.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