diff options
| author | Dave Airlie | 2019-03-04 12:02:55 +1000 |
|---|---|---|
| committer | Dave Airlie | 2019-03-04 12:02:55 +1000 |
| commit | 2c3cd66f4c66b169c18a2dbebbc894681d282278 (patch) | |
| tree | 9d2e055ea43e177914a4cce9d007982a7417623c /lib/Kconfig.kasan | |
| parent | 7fbd5d784f75750199c21918da9b2fc92af371e6 (diff) | |
| parent | 1c163f4c7b3f621efff9b28a47abb36f7378d783 (diff) | |
Merge v5.0 into drm-next
There is a really hairy resolution involving amdgpu fixes, that I'd rather confirm here.
Also some misc fixes are landed by me, but the pr has them as well.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'lib/Kconfig.kasan')
| -rw-r--r-- | lib/Kconfig.kasan | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan index d8c474b6691e..9737059ec58b 100644 --- a/lib/Kconfig.kasan +++ b/lib/Kconfig.kasan @@ -113,6 +113,28 @@ config KASAN_INLINE endchoice +config KASAN_STACK_ENABLE + bool "Enable stack instrumentation (unsafe)" if CC_IS_CLANG && !COMPILE_TEST + default !(CLANG_VERSION < 90000) + depends on KASAN + help + The LLVM stack address sanitizer has a know problem that + causes excessive stack usage in a lot of functions, see + https://bugs.llvm.org/show_bug.cgi?id=38809 + Disabling asan-stack makes it safe to run kernels build + with clang-8 with KASAN enabled, though it loses some of + the functionality. + This feature is always disabled when compile-testing with clang-8 + or earlier to avoid cluttering the output in stack overflow + warnings, but clang-8 users can still enable it for builds without + CONFIG_COMPILE_TEST. On gcc and later clang versions it is + assumed to always be safe to use and enabled by default. + +config KASAN_STACK + int + default 1 if KASAN_STACK_ENABLE || CC_IS_GCC + default 0 + config KASAN_S390_4_LEVEL_PAGING bool "KASan: use 4-level paging" depends on KASAN && S390 |