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? Thanks, James -- 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