On Thu, Oct 08, 2015 at 01:36:09PM +0300, Andrey Ryabinin wrote:
> 2015-10-07 13:04 GMT+03:00 Catalin Marinas <catalin.marinas@xxxxxxx>:
> > On Thu, Sep 17, 2015 at 12:38:06PM +0300, Andrey Ryabinin wrote:
> >> As usual patches available in git
> >> git://github.com/aryabinin/linux.git kasan/arm64v6
> >>
> >> Changes since v5:
> >> - Rebase on top of 4.3-rc1
> >> - Fixed EFI boot.
> >> - Updated Doc/features/KASAN.
> >
> > I tried to merge these patches (apart from the x86 one which is already
> > merged) but it still doesn't boot on Juno as an EFI application.
> >
>
> 4.3-rc1 was ok and 4.3-rc4 is not. Break caused by 0ce3cc008ec04
> ("arm64/efi: Fix boot crash by not padding between EFI_MEMORY_RUNTIME
> regions")
> It introduced sort() call in efi_get_virtmap().
> sort() is generic kernel function and it's instrumented, so we crash
> when KASAN tries to access shadow in sort().
I believe this is solved by Ard's stub isolation series [1,2], which
will build a stub-specific copy of sort() and various other functions
(see the arm-deps in [2]).
So long as the stub is not built with ASAN, that should work.
Mark.
[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2015-October/373807.html
[2] http://lists.infradead.org/pipermail/linux-arm-kernel/2015-October/373808.html
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