On 10/08/2015 02:11 PM, Mark Rutland wrote:

On Thu, Oct 08, 2015 at 01:36:09PM +0300, Andrey Ryabinin wrote:

quoted

2015-10-07 13:04 GMT+03:00 Catalin Marinas [off-list ref]:

quoted

On Thu, Sep 17, 2015 at 12:38:06PM +0300, Andrey Ryabinin wrote:

quoted

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.

Thanks, this should help, as we already build the stub without ASAN instrumentation.

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