Re: [PATCH v4 1/6] timer: kasan: record timer stack

[Thomas Gleixner]

On Fri, Sep 25 2020 at 17:15, Walter Wu wrote:
> On Fri, 2020-09-25 at 10:55 +0200, Thomas Gleixner wrote:
>> > We don't want to replace DEBUG_OBJECTS_TIMERS with this patches, only
>> > hope to use low overhead(compare with DEBUG_OBJECTS_TIMERS) to debug
>> 
>> KASAN has lower overhead than DEBUG_OBJECTS_TIMERS? Maybe in a different
>> universe.
>> 
> I mean KASAN + our patch vs KASAN + DEBUG_OBJECTS_TIMERS. The front one
> have the information to the original caller and help to debug. It is
> smaller overhead than the one behind.

For ONE specific problem related to timers and you have still not shown
a single useful debug output where this information helps to debug
anything.

> I agree your saying, so that I need to find out a use case to explain to
> you.

Indeed.

Thanks,

        tglx