From 1eb90f138b3fb4cc15f3acec94aa788e846269f7 Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Tue, 22 Sep 2009 13:52:57 +0800 Subject: tracing: Fix failure path in ftrace_graph_write() Don't call trace_parser_put() on uninitialized trace_parser. Signed-off-by: Li Zefan Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Steven Rostedt LKML-Reference: <4AB86639.3000003@cn.fujitsu.com> Signed-off-by: Ingo Molnar --- kernel/trace/ftrace.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'kernel') diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index a8fe4782ebad..5c5cb9be8e8c 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -2561,12 +2561,12 @@ ftrace_graph_write(struct file *file, const char __user *ubuf, if (ftrace_graph_count >= FTRACE_GRAPH_MAX_FUNCS) { ret = -EBUSY; - goto out; + goto out_unlock; } if (trace_parser_get_init(&parser, FTRACE_BUFF_MAX)) { ret = -ENOMEM; - goto out; + goto out_unlock; } read = trace_get_user(&parser, ubuf, cnt, ppos); @@ -2578,12 +2578,14 @@ ftrace_graph_write(struct file *file, const char __user *ubuf, ret = ftrace_set_func(ftrace_graph_funcs, &ftrace_graph_count, parser.buffer); if (ret) - goto out; + goto out_free; } ret = read; - out: + +out_free: trace_parser_put(&parser); +out_unlock: mutex_unlock(&graph_lock); return ret; -- cgit v1.2.3