On Mon, Aug 15, 2016 at 05:45:43PM +0100, James Morse wrote: > Hi Greg, > > On 14/08/16 16:54, Greg KH wrote: > > On Fri, Aug 12, 2016 at 07:11:19PM +0100, James Morse wrote: > >> commit e19a6ee2460bdd0d0055a6029383422773f9999a upstream. > >> > >> If we take an exception while at EL1, the exception handler inherits > >> the original context's addr_limit value. To be consistent always reset > >> addr_limit and PSTATE.UAO on (re-)entry to EL1. This prevents accidental > >> re-use of the original context's addr_limit. > >> > >> Based on a similar patch for arm from Russell King. > >> > >> Acked-by: Will Deacon <will.deacon@xxxxxxx> > >> Reviewed-by: Mark Rutland <mark.rutland@xxxxxxx> > >> Signed-off-by: James Morse <james.morse@xxxxxxx> > >> Signed-off-by: Will Deacon <will.deacon@xxxxxxx> > >> [ backport to stop perf misusing inherited addr_limit. > >> Removed code interacting with UAO and the irqstack ] > >> Link: https://bugs.chromium.org/p/project-zero/issues/detail?id=822 > >> Signed-off-by: James Morse <james.morse@xxxxxxx> > >> Cc: <stable@xxxxxxxxxxxxxxx> #4.1 > > > > Fails to apply to 4.4-stable, can you provide a backport for both of > > these to that tree if you want them there? > > Sorry - that is what I was trying to do! > > v4.4: > http://lists.infradead.org/pipermail/linux-arm-kernel/2016-August/448685.html > > v4.1 (this one): > http://lists.infradead.org/pipermail/linux-arm-kernel/2016-August/448684.html > > > Did I mess something up in the cc/sign-off area? Ah, that was confusing. You sent 2 patches, as a series, and didn't make it obvious what they were to be applied to. Please make it so I can't miss it, otherwise I will :) now queued up. greg k-h -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html