Hi Jinjie, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 5930fa3740c518a9f6ba688fd0c1873d6f3adbce commit: 3053668e6b211924bb67c19d791a5a532eca2ad8 [3534/3534] arm64: Introduce Xint software solution config: arm64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20251211/202512111720.WtJhXDC4-lkp@i...) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 4125e73cdc6188cca4c1c72b72e2b2d85c157483) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251211/202512111720.WtJhXDC4-lkp@i...) 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 <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202512111720.WtJhXDC4-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from <built-in>:3: In file included from ././include/linux/compiler_types.h:150: ./include/linux/compiler-clang.h:33:9: warning: '__SANITIZE_ADDRESS__' macro redefined [-Wmacro-redefined] 33 | #define __SANITIZE_ADDRESS__ | ^ <built-in>:367:9: note: previous definition is here 367 | #define __SANITIZE_ADDRESS__ 1 | ^

...

kernel/irq/proc.c:334:13: warning: no previous prototype for function 'register_irqchip_proc' [-Wmissing-prototypes] 334 | void __weak register_irqchip_proc(struct irq_desc *desc, void *irqp) { } | ^ kernel/irq/proc.c:334:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 334 | void __weak register_irqchip_proc(struct irq_desc *desc, void *irqp) { } | ^ | static kernel/irq/proc.c:335:13: warning: no previous prototype for function 'unregister_irqchip_proc' [-Wmissing-prototypes] 335 | void __weak unregister_irqchip_proc(struct irq_desc *desc) { } | ^ kernel/irq/proc.c:335:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 335 | void __weak unregister_irqchip_proc(struct irq_desc *desc) { } | ^ | static 3 warnings generated.

vim +/register_irqchip_proc +334 kernel/irq/proc.c 333

334 void __weak register_irqchip_proc(struct irq_desc *desc, void *irqp) { } 335 void __weak unregister_irqchip_proc(struct irq_desc *desc) { } 336

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