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authorAndrey Konovalov <andreyknvl@google.com>2022-03-25 04:11:53 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2022-03-25 05:06:48 +0300
commitf6f37d9320a11e9059f11a99fc59dfb8e307c07f (patch)
tree71225fcf83b4a41ecbdafbfd9e287e2a1fb6c6a5 /arch
parentfbefb423f873a8713a2ad42b5dcb4585b3e58e01 (diff)
downloadlinux-f6f37d9320a11e9059f11a99fc59dfb8e307c07f.tar.xz
arm64: select KASAN_VMALLOC for SW/HW_TAGS modes
Generic KASAN already selects KASAN_VMALLOC to allow VMAP_STACK to be selected unconditionally, see commit acc3042d62cb9 ("arm64: Kconfig: select KASAN_VMALLOC if KANSAN_GENERIC is enabled"). The same change is needed for SW_TAGS KASAN. HW_TAGS KASAN does not require enabling KASAN_VMALLOC for VMAP_STACK, they already work together as is. Still, selecting KASAN_VMALLOC still makes sense to make vmalloc() always protected. In case any bugs in KASAN's vmalloc() support are discovered, the command line kasan.vmalloc flag can be used to disable vmalloc() checking. Select KASAN_VMALLOC for all KASAN modes for arm64. Link: https://lkml.kernel.org/r/99d6b3ebf57fc1930ff71f9a4a71eea19881b270.1643047180.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Marco Elver <elver@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Collingbourne <pcc@google.com> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm64/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index f8680892401b..23048be0333b 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -208,7 +208,7 @@ config ARM64
select IOMMU_DMA if IOMMU_SUPPORT
select IRQ_DOMAIN
select IRQ_FORCED_THREADING
- select KASAN_VMALLOC if KASAN_GENERIC
+ select KASAN_VMALLOC if KASAN
select MODULES_USE_ELF_RELA
select NEED_DMA_MAP_STATE
select NEED_SG_DMA_LENGTH