From mboxrd@z Thu Jan 1 00:00:00 1970 From: ryabinin.a.a@gmail.com (Andrey Ryabinin) Date: Thu, 8 Oct 2015 14:23:20 +0300 Subject: [PATCH v6 0/6] KASAN for arm64 In-Reply-To: <20151008111144.GC7275@leverpostej> References: <1442482692-6416-1-git-send-email-ryabinin.a.a@gmail.com> <20151007100411.GG3069@e104818-lin.cambridge.arm.com> <20151008111144.GC7275@leverpostej> Message-ID: <56165228.8060201@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 10/08/2015 02:11 PM, Mark Rutland wrote: > 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. 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 >