From: Steven Rostedt <srostedt@redhat.com>
Date: Mon, 12 May 2008 19:20:45 +0000 (+0200)
Subject: ftrace: disable all tracers on corrupted buffer
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=08bafa0efcf29fe18ec39c2147077b597368b018;p=linux-beck.git

ftrace: disable all tracers on corrupted buffer

If the trace buffer is detected to be corrupted, then we
disable all tracers.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

diff --git a/kernel/trace/trace_selftest.c b/kernel/trace/trace_selftest.c
index 4c8a1b2d8231..a6f1ed75f836 100644
--- a/kernel/trace/trace_selftest.c
+++ b/kernel/trace/trace_selftest.c
@@ -67,6 +67,8 @@ trace_test_buffer_cpu(struct trace_array *tr, struct trace_array_cpu *data)
 	return 0;
 
  failed:
+	/* disable tracing */
+	tracing_disabled = 1;
 	printk(KERN_CONT ".. corrupted trace buffer .. ");
 	return -1;
 }