Messages in this thread | | | Date | Fri, 17 Feb 2012 09:33:19 +0300 | From | Alexey Dobriyan <> | Subject | Re: [ubuntu-hardened] Add overflow protection to kref |
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On Thu, Feb 16, 2012 at 09:48:38PM -0500, David Windsor wrote: > <snip> > > >> > >> I have yet to see a patch, so why are we arguing about this? :) > >> > >> Again, I don't know of any kref overflows that have ever happened, so > >> trying to "protect" this type of thing, seems odd to me. > > > > Well, I think the issue was to protect counting things (which seems to > > be what PaX was after originally), and that kref seemed like the place > > to put it. I'll let David take it further. > > > > Patches are forthcoming that will first introduce overflow protection > to kref.
Patches have already been posted: http://marc.info/?l=linux-kernel&m=132337541830590&w=4 They were dropped for various (uninteresting) reasons, though.
> Once that's in place, I'll move a few refcount users from > atomic_t to kref as a reference for other subsystems;
This sucks because dtor argument is mandatory. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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