Re: [PATCH v2] ftrace: Fix use-after-free for dynamic ftrace_ops

[Li Huafei]

On 2022/11/3 11:24, Steven Rostedt wrote:
> On Wed, 2 Nov 2022 23:23:34 -0400
> Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
> 
>> I think you misunderstood me. What I was suggesting was to get rid of
>> the ftrace_enabled check. The DYNAMIC part is most definitely needed.
>>
>> 	if (!command) {
>> 		if (ops->flags & FTRACE_OPS_FL_DYNAMIC)
>> 			goto out;
>> 		return 0;
>> 	}
> 
> 
> Nevermind, I forgot that the out is before the DYNAMIC check.
> 
>    ;-)
> 

Yes. There we have the DYNAMIC check.

> -- Steve
> 
> .
>