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author | Olof Johansson <olof@lixom.net> | 2019-12-05 13:16:58 -0800 |
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committer | Olof Johansson <olof@lixom.net> | 2019-12-05 13:18:54 -0800 |
commit | 942e6f8a8314e5550e254519dfba4ccd5170421d (patch) | |
tree | 75ec655b440fbc1c454247af38b5596dd8c78de9 /lib/Kconfig.kasan | |
parent | ARM: pxa: Fix resource properties (diff) | |
parent | Merge tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc (diff) | |
download | linux-dev-942e6f8a8314e5550e254519dfba4ccd5170421d.tar.xz linux-dev-942e6f8a8314e5550e254519dfba4ccd5170421d.zip |
Merge mainline/master into arm/fixes
This brings in the mainline tree right after armsoc contents was merged
this release cycle, so that we can re-run savedefconfig, etc.
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'lib/Kconfig.kasan')
-rw-r--r-- | lib/Kconfig.kasan | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan index 6c9682ce0254..81f5464ea9e1 100644 --- a/lib/Kconfig.kasan +++ b/lib/Kconfig.kasan @@ -6,6 +6,9 @@ config HAVE_ARCH_KASAN config HAVE_ARCH_KASAN_SW_TAGS bool +config HAVE_ARCH_KASAN_VMALLOC + bool + config CC_HAS_KASAN_GENERIC def_bool $(cc-option, -fsanitize=kernel-address) @@ -142,6 +145,19 @@ config KASAN_SW_TAGS_IDENTIFY (use-after-free or out-of-bounds) at the cost of increased memory consumption. +config KASAN_VMALLOC + bool "Back mappings in vmalloc space with real shadow memory" + depends on KASAN && HAVE_ARCH_KASAN_VMALLOC + help + By default, the shadow region for vmalloc space is the read-only + zero page. This means that KASAN cannot detect errors involving + vmalloc space. + + Enabling this option will hook in to vmap/vmalloc and back those + mappings with real shadow memory allocated on demand. This allows + for KASAN to detect more sorts of errors (and to support vmapped + stacks), but at the cost of higher memory usage. + config TEST_KASAN tristate "Module for testing KASAN for bug detection" depends on m && KASAN |