Re: [PATCH 1/2] debugobject: fix concurrency issues with is_static_object

From: Schspa Shi
Date: Wed Mar 22 2023 - 23:16:40 EST



Thomas Gleixner <tglx@xxxxxxxxxxxxx> writes:

> On Thu, Mar 23 2023 at 01:55, Schspa Shi wrote:
>> Thomas Gleixner <tglx@xxxxxxxxxxxxx> writes:
>>> Which requirement? The is_static_object() call takes the address of the
>>> actual object and has nothing to do with the tracking object at all.
>>>
>>
>> This is for the fellowing test case, actually we calls
>> debug_object_free() from a static object in our selftest, if we don't
>> report any thing when call debug_object_free from a static object, we
>> there is no such issues.
>
> That's an artifical and completely pointless test case. As I told you
> before the memory subsystem will warn when it's tried to free a static
> object. debug_objects_free() is invoked from the memory subsystem *free*
> functions.
>
> What is the value of another warning?
>
> Nothing at all.
>
> So why would we add extra code just to keep track of something
> completely redundant?
>

OK, there is really no need to do this extra check. And should I
submit a new patch version with your change 😃?

> Thanks,
>
> tglx


--
BRs
Schspa Shi