Messages in this thread | | | Date | Mon, 3 Feb 2020 09:38:11 -0800 | From | Christoph Hellwig <> | Subject | Re: [kernel-hardening] [PATCH 09/38] usercopy: Mark kmalloc caches as usercopy caches |
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On Thu, Jan 30, 2020 at 11:23:38AM -0800, Kees Cook wrote: > Hm, looks like it's allocated from the low 16MB. Seems like poor naming! > :) There seems to be a LOT of stuff using GFP_DMA, and it seems unlikely > those are all expecting low addresses?
Most of that is either completely or partially bogus. Besides the weird S/390 stuff pretty much everything should be using the dma allocators. A couple really messed up drivers even pass GFP_DMA* to the dma allocator, but my patches to fix that up seem to be stuck.
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