Messages in this thread | | | Date | Sat, 8 Nov 2008 00:13:15 -0200 | From | Glauber Costa <> | Subject | Re: [PATCH 0/4] Fix vmalloc regression |
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On Sat, Nov 08, 2008 at 01:58:32AM +0100, Nick Piggin wrote: > On Fri, Nov 07, 2008 at 08:35:50PM -0200, Glauber Costa wrote: > > Nick, > > > > This is the whole set of patches I was talking about. > > Patch 3 is the one that in fact fixes the problem > > Patches 1 and 2 are debugging aids I made use of, and could be possibly > > useful to others > > Patch 4 removes guard pages entirely for non-debug kernels, as we have already > > previously discussed. > > > > Hope it's all fine. > > OK, these all look good, but I may only push 3/4 for Linus in this round, > along with some of the changes from my patch that you tested as well.
Makes total sense. > > With the DEBUG_PAGEALLOC case, I have been thinking that we perhaps should > turn off the lazy unmapping optimisation as well, so it catches use > after free similarly to the page allocator... but probably it is a good > idea at least to avoid the double-guard page for 2.6.28?
Makes sense. Maybe poisoning after free would also be useful?
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