linux-kernel - [PATCH 4.19 090/106] rxrpc: Fix rxrpc

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Message-Id: <20191006171200.034701040@linuxfoundation.org>
Date:   Sun,  6 Oct 2019 19:21:36 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, David Howells <dhowells@...hat.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.19 090/106] rxrpc: Fix rxrpc_recvmsg tracepoint

From: David Howells <dhowells@...hat.com>

[ Upstream commit db9b2e0af605e7c994784527abfd9276cabd718a ]

Fix the rxrpc_recvmsg tracepoint to handle being called with a NULL call
parameter.

Fixes: a25e21f0bcd2 ("rxrpc, afs: Use debug_ids rather than pointers in traces")
Signed-off-by: David Howells <dhowells@...hat.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 include/trace/events/rxrpc.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/trace/events/rxrpc.h
+++ b/include/trace/events/rxrpc.h
@@ -1073,7 +1073,7 @@ TRACE_EVENT(rxrpc_recvmsg,
 			     ),
 
 	    TP_fast_assign(
-		    __entry->call = call->debug_id;
+		    __entry->call = call ? call->debug_id : 0;
 		    __entry->why = why;
 		    __entry->seq = seq;
 		    __entry->offset = offset;