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X-OriginatorOrg: intel.com On Fri, May 22, 2026 at 05:52:04PM -0700, Nathan Chancellor wrote: > On Fri, May 22, 2026 at 02:18:49AM +0800, kernel test robot wrote: > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > > head: 550604d6c9b9efc8d068aff94dc301694a7afdee > > commit: bc5ffe737f56ee2734597069ed71f48830549483 [5302/7547] Disable -Wattribute-alias for clang-23 and newer > > config: arm-defconfig (https://download.01.org/0day-ci/archive/20260522/202605220247.dQAHslyv-lkp@intel.com/config) > > compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 5bac06718f502014fade905512f1d26d578a18f3) > > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260522/202605220247.dQAHslyv-lkp@intel.com/reproduce) > > > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > > the same patch/commit), kindly add following tags > > | Reported-by: kernel test robot > > | Closes: https://lore.kernel.org/oe-kbuild-all/202605220247.dQAHslyv-lkp@intel.com/ > > > > All errors (new ones prefixed by >>): > > > > >> fs/open.c:152:1: error: unknown warning group '-Wattribute-alias', ignored [-Werror,-Wunknown-warning-option] > > 152 | SYSCALL_DEFINE2(truncate, const char __user *, path, long, length) > > | ^ > > include/linux/syscalls.h:226:36: note: expanded from macro 'SYSCALL_DEFINE2' > > 226 | #define SYSCALL_DEFINE2(name, ...) SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) > > | ^ > > include/linux/syscalls.h:236:2: note: expanded from macro 'SYSCALL_DEFINEx' > > 236 | __SYSCALL_DEFINEx(x, sname, __VA_ARGS__) > > | ^ > > include/linux/syscalls.h:250:2: note: expanded from macro '__SYSCALL_DEFINEx' > > 250 | __diag_ignore(clang, 23, "-Wattribute-alias", \ > > | ^ > > note: (skipping 4 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all) > > include/linux/compiler-clang.h:135:28: note: expanded from macro '__diag_clang_23' > > 135 | #define __diag_clang_23(s) __diag(s) > > | ^ > > include/linux/compiler-clang.h:132:20: note: expanded from macro '__diag' > > 132 | #define __diag(s) _Pragma(__diag_str(clang diagnostic s)) > > | ^ > > :223:27: note: expanded from here > > 223 | clang diagnostic ignored "-Wattribute-alias" > > | ^ > > Please update your clang-23, this will be avoided with a newer version > from main that has the change that adds -Wattribute-alias. Thanks Nathan, we will upgrade the clang version asap to avoid this false report. > > -- > Cheers, > Nathan >