tracing/core: fix missing mutex unlock on tracing_set_tracer()

Impact: fix possible locking imbalance

In case of ring buffer resize failure, tracing_set_tracer forgot to
release trace_types_lock. Fix it.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <1237151439-6755-5-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index efe3202c02092188d14a3eb32f8c9d92024a8dca..c0cf946d42f574843b5a95836f282cc89899abe4 100644 (file)
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -2494,7 +2494,7 @@ static int tracing_set_tracer(const char *buf)
        if (!ring_buffer_expanded) {
                ret = tracing_resize_ring_buffer(trace_buf_size);
                if (ret < 0)
-                       return ret;
+                       goto out;
                ret = 0;
        }