On Wed, Sep 10, 2025 at 05:23:47AM +0000, ci_notify@linaro.org wrote:

In tcwg_kernel/llvm-master-aarch64-stable-allyesconfig, after: | commit llvmorg-22-init-6898-gdf430c33a71f | Author: Nathan Chancellor nathan@kernel.org | Date: Mon Sep 8 11:33:57 2025 -0700 | | [Frontend] Define __SANITIZE__ macros for kernel address variants (#156543) | | GCC defines these macros for both userspace and kernel address | sanitizers: | | ... 29 lines of the commit log omitted.

Produces Failure: | Results changed to | # reset_artifacts: | -10 | # build_abe binutils: | -9 | # build_kernel_llvm: | -5 | # build_abe qemu: | -2 | # linux_n_obj: | 316 | # First few build errors in logs: | # 00:08:01 ./include/linux/compiler-clang.h:28:9: error: '__SANITIZE_ADDRESS__' macro redefined [-Werror,-Wmacro-redefined] | # 00:08:01 ./include/linux/compiler-clang.h:28:9: error: '__SANITIZE_ADDRESS__' macro redefined [-Werror,-Wmacro-redefined] | # 00:08:01 ./include/linux/compiler-clang.h:28:9: error: '__SANITIZE_ADDRESS__' macro redefined [-Werror,-Wmacro-redefined] | # 00:08:01 ./include/linux/compiler-clang.h:28:9: error: '__SANITIZE_ADDRESS__' macro redefined [-Werror,-Wmacro-redefined] | # 00:08:01 ./include/linux/compiler-clang.h:28:9: error: '__SANITIZE_ADDRESS__' macro redefined [-Werror,-Wmacro-redefined] | # 00:08:01 ./include/linux/compiler-clang.h:28:9: error: '__SANITIZE_ADDRESS__' macro redefined [-Werror,-Wmacro-redefined] | # 00:08:01 ./include/linux/compiler-clang.h:28:9: error: '__SANITIZE_ADDRESS__' macro redefined [-Werror,-Wmacro-redefined] | # 00:08:01 ./include/linux/compiler-clang.h:28:9: error: '__SANITIZE_ADDRESS__' macro redefined [-Werror,-Wmacro-redefined] | # 00:08:01 ./include/linux/compiler-clang.h:28:9: error: '__SANITIZE_ADDRESS__' macro redefined [-Werror,-Wmacro-redefined] | # 00:08:01 ./include/linux/compiler-clang.h:28:9: error: '__SANITIZE_ADDRESS__' macro redefined [-Werror,-Wmacro-redefined]

Thanks for the report. The kernel side fix for this has been picked up in a maintainer's tree [1] so it should be in Linus's tree soon then into stable shortly after that. This was already a problem in certain trees with CONFIG_KCSAN and __SANITIZE_THREAD__, I just made it a little worse ;)

[1]: https://git.kernel.org/akpm/mm/c/3fac212fe489aa0dbe8d80a42a7809840ca7b0f9

Cheers, Nathan