On Wed, Nov 05 2014, Steven Rostedt <rost...@goodmis.org> wrote:
> On Fri, 12 Sep 2014 11:25:52 +0200
> Rasmus Villemoes <li...@rasmusvillemoes.dk> wrote:
>
>> diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
>> index 5916a8e..7b9ce28 100644
>> --- a/kernel/trace/ftrace.c
>> +++ b/kernel/trace/ftrace.c
>> @@ -556,13 +556,13 @@ static int function_stat_cmp(void *p1, void *p2)
>> static int function_stat_headers(struct seq_file *m)
>> {
>> #ifdef CONFIG_FUNCTION_GRAPH_TRACER
>> - seq_printf(m, " Function "
>> - "Hit Time Avg s^2\n"
>> - " -------- "
>> - "--- ---- --- ---\n");
>> + seq_puts(m,
>> + " Function " "Hit Time
>> Avg s^2\n"
>> + " -------- " "--- ----
>> --- ---\n");
>
> Please keep the original format. I know that it's considered bad form
> to split strings like this, but I consider this one of the exceptions
> to the rule.
OK. Want me to resend?
>> @@ -3250,7 +3250,7 @@ static int t_show(struct seq_file *m, void *v)
>> if (!t)
>> return 0;
>>
>> - seq_printf(m, "%s", t->name);
>> + seq_puts(m, t->name);
>
> This is wrong and dangerous.
>
> What happens if "t->name" contains "%d" or "%s"?
Then those characters will be printed to the seq_file, just as they
would previously? puts doesn't interpret its string argument in any
way...
>> --- a/kernel/trace/trace_events_trigger.c
>> +++ b/kernel/trace/trace_events_trigger.c
>> @@ -373,7 +373,7 @@ event_trigger_print(const char *name, struct seq_file *m,
>> {
>> long count = (long)data;
>>
>> - seq_printf(m, "%s", name);
>> + seq_puts(m, name);
>
> Again, this is wrong and dangerous.
I'm pretty sure it's neither :-)
Rasmus
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