Messages in this thread | | | Date | Sun, 31 May 2009 00:14:44 +0200 | From | Ingo Molnar <> | Subject | Re: [patch 0/5] Support for sanitization flag in low-level page allocator |
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* Pekka Enberg <penberg@cs.helsinki.fi> wrote:
> Hi Larry, > > On Sat, May 30, 2009 at 9:03 PM, Larry H. <research@subreption.com> wrote: > > The first issue is that SLOB has a broken ksize, which won't take into > > consideration compound pages AFAIK. To fix this you will need to > > introduce some changes in the way the slob_page structure is handled, > > and add real size tracking to it. You will find these problems if you > > try to implement a reliable kmem_ptr_validate for SLOB, too. > > Does this mean that kzfree() isn't broken for SLAB/SLUB? Maybe I > read your emails wrong but you seemed to imply that.
Yep, he definitely wrote that:
http://lkml.org/lkml/2009/5/30/30
[...] | | That's hopeless, and kzfree is broken. Like I said in my earlier | reply, please test that yourself to see the results. Whoever | wrote that ignored how SLAB/SLUB work and if kzfree had been used | somewhere in the kernel before, it should have been noticed long | time ago. | [...]
Very puzzling claims i have to say.
Ingo
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