linux-kernel - [PATCH 4.13 078/109] tracing: Fix clear of RECORDED

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Date:   Sun, 24 Sep 2017 22:33:39 +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, Joel Fernandes <joelaf@...gle.com>,
        Chunyu Hu <chuhu@...hat.com>,
        "Steven Rostedt (VMware)" <rostedt@...dmis.org>
Subject: [PATCH 4.13 078/109] tracing: Fix clear of RECORDED_TGID flag when disabling trace event

4.13-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chunyu Hu <chuhu@...hat.com>

commit 7685ab6c58557c6234f3540260195ecbee7fc4b3 upstream.

When disabling one trace event, the RECORDED_TGID flag in the event
file is not correctly cleared. It's clearing RECORDED_CMD flag when
it should clear RECORDED_TGID flag.

Link: http://lkml.kernel.org/r/1504589806-8425-1-git-send-email-chuhu@redhat.com

Cc: Joel Fernandes <joelaf@...gle.com>
Fixes: d914ba37d7 ("tracing: Add support for recording tgid of tasks")
Signed-off-by: Chunyu Hu <chuhu@...hat.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 kernel/trace/trace_events.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -406,7 +406,7 @@ static int __ftrace_event_enable_disable
 
 			if (file->flags & EVENT_FILE_FL_RECORDED_TGID) {
 				tracing_stop_tgid_record();
-				clear_bit(EVENT_FILE_FL_RECORDED_CMD_BIT, &file->flags);
+				clear_bit(EVENT_FILE_FL_RECORDED_TGID_BIT, &file->flags);
 			}
 
 			call->class->reg(call, TRACE_REG_UNREGISTER, file);