[for-next][PATCH 2/3] tracing: Missing error code in tracer_alloc_buffers()

From	Steven Rostedt <rostedt@goodmis.org>
Newsgroups	linux.kernel
Subject	[for-next][PATCH 2/3] tracing: Missing error code in tracer_alloc_buffers()
Date	2017-08-03 12:10 +0200
Message-ID	<ualeP-6Uy-21@gated-at.bofh.it> (permalink)
References	<ualeP-6Uy-13@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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From: Dan Carpenter <dan.carpenter@oracle.com>

If ring_buffer_alloc() or one of the next couple function calls fail
then we should return -ENOMEM but the current code returns success.

Link: http://lkml.kernel.org/r/20170801110201.ajdkct7vwzixahvx@mwanda

Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: stable@vger.kernel.org
Fixes: b32614c03413 ('tracing/rb: Convert to hotplug state machine')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
 kernel/trace/trace.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 784fb43b2abe..d815fc317e9d 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -8293,6 +8293,7 @@ __init static int tracer_alloc_buffers(void)
 	if (ret < 0)
 		goto out_free_cpumask;
 	/* Used for event triggers */
+	ret = -ENOMEM;
 	temp_buffer = ring_buffer_alloc(PAGE_SIZE, RB_FL_OVERWRITE);
 	if (!temp_buffer)
 		goto out_rm_hp_state;
-- 
2.13.2

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[for-next][PATCH 2/3] tracing: Missing error code in tracer_alloc_buffers() Steven Rostedt <rostedt@goodmis.org> - 2017-08-03 12:10 +0200

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