linux-kernel - Re: [PATCH v6 6/6] tracing: Fix maybe-uninitialized warning in ftrace_function_set

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Message-ID: <1350005812.24256.81.camel@gandalf.local.home>
Date:	Thu, 11 Oct 2012 21:36:52 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	David Sharp <dhsharp@...gle.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 6/6] tracing: Fix maybe-uninitialized warning in
 ftrace_function_set_regexp

On Thu, 2012-10-11 at 16:27 -0700, David Sharp wrote:
> Compiler warning:
> 
> kernel/trace/trace_events_filter.c: In function 'ftrace_function_set_filter_cb':
> kernel/trace/trace_events_filter.c:2074:8: error: 'ret' may be used uninitialized in this function [-Werror=maybe-uninitialized]
> 
> Signed-off-by: David Sharp <dhsharp@...gle.com>
> Cc: Steven Rostedt <rostedt@...dmis.org>
> ---
>  kernel/trace/trace_events_filter.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)
> 
> diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
> index 431dba8..ef36953 100644
> --- a/kernel/trace/trace_events_filter.c
> +++ b/kernel/trace/trace_events_filter.c
> @@ -2002,9 +2002,10 @@ static int ftrace_function_set_regexp(struct ftrace_ops *ops, int filter,
>  static int __ftrace_function_set_filter(int filter, char *buf, int len,
>  					struct function_filter_data *data)
>  {
> -	int i, re_cnt, ret;
> +	int i, re_cnt;
>  	int *reset;
>  	char **re;
> +	int ret = 0;
>  
>  	reset = filter ? &data->first_filter : &data->first_notrace;
>  

It has already been fixed in mainline:

92d8d4a8b0f4c6eba70f6e62b48e38bd005a56e6

http://marc.info/?l=linux-kernel&m=134012157512078

-- Steve

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