Re: [PATCH v3 21/39] kasan: don't allow SW_TAGS with ARM64_MTE
From: elver@google.com
Date: 2020-10-01 17:55:49
Also in:
linux-mm, lkml
Does that patch title need an ", arm64" in it, like the others? On Fri, Sep 25, 2020 at 12:50AM +0200, Andrey Konovalov wrote:
quoted hunk ↗ jump to hunk
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> --- 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 e7450fbd0aa7..e875db8e1c86 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig@@ -131,7 +131,7 @@ 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-- 2.28.0.681.g6f77f65b4e-goog
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