Re: [PATCH v9 24/44] kasan, arm64: don't allow SW_TAGS with ARM64_MTE
From: Alexander Potapenko <glider@google.com>
Date: 2020-11-11 15:53:17
Also in:
linux-mm, lkml
On Tue, Nov 10, 2020 at 11:12 PM 'Andrey Konovalov' via kasan-dev [off-list ref] wrote:
Software tag-based KASAN provides its own tag checking machinery that can conflict with MTE. Don't allow enabling software tag-based KASAN when MTE is enabled. Signed-off-by: Andrey Konovalov <redacted> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
quoted hunk ↗ jump to hunk
--- Change-Id: Icd29bd0c6b1d3d7a0ee3d50c20490f404d34fc97 --- arch/arm64/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 1515f6f153a0..25ead11074bf 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig@@ -134,7 +134,7 @@ config ARM64 select HAVE_ARCH_JUMP_LABEL select HAVE_ARCH_JUMP_LABEL_RELATIVE select HAVE_ARCH_KASAN if !(ARM64_16K_PAGES && ARM64_VA_BITS_48) - select HAVE_ARCH_KASAN_SW_TAGS if HAVE_ARCH_KASAN + select HAVE_ARCH_KASAN_SW_TAGS if (HAVE_ARCH_KASAN && !ARM64_MTE) select HAVE_ARCH_KGDB select HAVE_ARCH_MMAP_RND_BITS select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT --2.29.2.222.g5d2a92d10f8-goog -- You received this message because you are subscribed to the Google Groups "kasan-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to kasan-dev+unsubscribe@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/kasan-dev/67c17dafa28036b628234c8f1d88368af374449c.1605046192.git.andreyknvl%40google.com.
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