Re: [PATCH] mm/slub: Avoid recursive loop with kmemleak

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On Thu, 25 Apr 2024 14:30:55 -0700 Suren Baghdasaryan <surenb@xxxxxxxxxx> wrote:

> > > --- a/mm/kmemleak.c
> > > +++ b/mm/kmemleak.c
> > > @@ -463,7 +463,7 @@ static struct kmemleak_object *mem_pool_alloc(gfp_t gfp)
> > >
> > >       /* try the slab allocator first */
> > >       if (object_cache) {
> > > -             object = kmem_cache_alloc(object_cache, gfp_kmemleak_mask(gfp));
> > > +             object = kmem_cache_alloc_noprof(object_cache, gfp_kmemleak_mask(gfp));
> >
> > What do these get accounted to, or does this now pop a warning with
> > CONFIG_MEM_ALLOC_PROFILING_DEBUG?
> 
> Thanks for the fix, Kees!
> I'll look into this recursion more closely to see if there is a better
> way to break it. As a stopgap measure seems ok to me. I also think
> it's unlikely that one would use both tracking mechanisms on the same
> system.

I'd really like to start building mm-stable without having to route
around memprofiling.  How about I include Kees's patch in that for now?





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