Messages in this thread | | | Date | Tue, 8 Nov 2016 11:36:57 +0100 | From | Greg KH <> | Subject | Re: [PATCH 3.12 69/72] Revert "fix minor infoleak in get_user_ex()" |
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On Mon, Nov 07, 2016 at 08:45:59AM -0800, Linus Torvalds wrote: > So a patch something like this might be a safe way to fix the > potential infoleak in older kernels. > > THIS IS UNTESTED. It's a very obvious patch, though, so if it compiles > it probably works. It just initializes the output variable with 0 in > the inline asm description, instead of doing it in the exception > handler. > > It will generate slightly worse code (a few unnecessary ALU > operations), but it doesn't have any interactions with the exception > handler implementation.
It builds here, so I've queued it up for 4.4-stable, let's see if the auto-builders have any problems with it. Thanks for the patch.
greg k-h
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