asan-stack mode still uses dangerously large kernel stacks of tens of kilobytes in some drivers, and it does not seem that anyone is working on the clang bug.
Let's push this back to clang-10 for now so users don't run into this by accident, and we can test-build allmodconfig kernels using clang-9 without drowning in warnings. Link: https://bugs.llvm.org/show_bug.cgi?id=38809 Fixes: 6baec880d7a5 ("kasan: turn off asan-stack for clang-8 and earlier") Signed-off-by: Arnd Bergmann <[email protected]> --- lib/Kconfig.kasan | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan index 4fafba1a923b..2f260bb63d77 100644 --- a/lib/Kconfig.kasan +++ b/lib/Kconfig.kasan @@ -106,7 +106,7 @@ endchoice config KASAN_STACK_ENABLE bool "Enable stack instrumentation (unsafe)" if CC_IS_CLANG && !COMPILE_TEST - default !(CLANG_VERSION < 90000) + default !(CLANG_VERSION < 100000) depends on KASAN help The LLVM stack address sanitizer has a know problem that -- 2.20.0
