From mboxrd@z Thu Jan 1 00:00:00 1970 From: mark.rutland@arm.com (Mark Rutland) Date: Thu, 8 Oct 2015 12:11:44 +0100 Subject: [PATCH v6 0/6] KASAN for arm64 In-Reply-To: References: <1442482692-6416-1-git-send-email-ryabinin.a.a@gmail.com> <20151007100411.GG3069@e104818-lin.cambridge.arm.com> Message-ID: <20151008111144.GC7275@leverpostej> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thu, Oct 08, 2015 at 01:36:09PM +0300, Andrey Ryabinin wrote: > 2015-10-07 13:04 GMT+03:00 Catalin Marinas : > > 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