tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 220bfa0ea761db9406a3cfde3064aa029e829221 commit: b25272c022a17ee12688d001375e7a483385c568 [2544/2544] livepatch: Use breakpoint exception to optimize enabling livepatch config: x86_64-randconfig-123-20241205 (https://download.01.org/0day-ci/archive/20241206/202412060504.AIlPmrzd-lkp@i...) compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241206/202412060504.AIlPmrzd-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/202412060504.AIlPmrzd-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from kernel/livepatch/core.c:16: In file included from include/linux/kallsyms.h:12: In file included from include/linux/mm.h:1557: include/linux/vmstat.h:431:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 431 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ kernel/livepatch/core.c:70:16: warning: no previous prototype for function 'klp_check_patch_kprobed' [-Wmissing-prototypes] 70 | struct kprobe *klp_check_patch_kprobed(struct klp_patch *patch) | ^ kernel/livepatch/core.c:70:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 70 | struct kprobe *klp_check_patch_kprobed(struct klp_patch *patch) | ^ | static kernel/livepatch/core.c:941:12: warning: no previous prototype for function 'arch_klp_func_can_patch' [-Wmissing-prototypes] 941 | int __weak arch_klp_func_can_patch(struct klp_func *func) | ^ kernel/livepatch/core.c:941:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 941 | int __weak arch_klp_func_can_patch(struct klp_func *func) | ^ | static kernel/livepatch/core.c:946:12: warning: no previous prototype for function 'arch_klp_init_func' [-Wmissing-prototypes] 946 | int __weak arch_klp_init_func(struct klp_object *obj, struct klp_func *func) | ^ kernel/livepatch/core.c:946:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 946 | int __weak arch_klp_init_func(struct klp_object *obj, struct klp_func *func) | ^ | static kernel/livepatch/core.c:1349:5: warning: no previous prototype for function 'klp_try_disable_patch' [-Wmissing-prototypes] 1349 | int klp_try_disable_patch(void *data) | ^ kernel/livepatch/core.c:1349:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1349 | int klp_try_disable_patch(void *data) | ^ | static kernel/livepatch/core.c:1383:13: warning: no previous prototype for function 'arch_klp_code_modify_prepare' [-Wmissing-prototypes] 1383 | void __weak arch_klp_code_modify_prepare(void) | ^ kernel/livepatch/core.c:1383:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1383 | void __weak arch_klp_code_modify_prepare(void) | ^ | static kernel/livepatch/core.c:1387:13: warning: no previous prototype for function 'arch_klp_code_modify_post_process' [-Wmissing-prototypes] 1387 | void __weak arch_klp_code_modify_post_process(void) | ^ kernel/livepatch/core.c:1387:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1387 | void __weak arch_klp_code_modify_post_process(void) | ^ | static kernel/livepatch/core.c:1391:14: warning: no previous prototype for function 'arch_klp_mem_alloc' [-Wmissing-prototypes] 1391 | void __weak *arch_klp_mem_alloc(size_t size) | ^ kernel/livepatch/core.c:1391:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1391 | void __weak *arch_klp_mem_alloc(size_t size) | ^ | static kernel/livepatch/core.c:1396:13: warning: no previous prototype for function 'arch_klp_mem_free' [-Wmissing-prototypes] 1396 | void __weak arch_klp_mem_free(void *mem) | ^ kernel/livepatch/core.c:1396:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1396 | void __weak arch_klp_mem_free(void *mem) | ^ | static kernel/livepatch/core.c:1406:12: warning: no previous prototype for function 'arch_klp_check_breakpoint' [-Wmissing-prototypes] 1406 | int __weak arch_klp_check_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ kernel/livepatch/core.c:1406:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1406 | int __weak arch_klp_check_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ | static kernel/livepatch/core.c:1411:12: warning: no previous prototype for function 'arch_klp_add_breakpoint' [-Wmissing-prototypes] 1411 | int __weak arch_klp_add_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ kernel/livepatch/core.c:1411:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1411 | int __weak arch_klp_add_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ | static kernel/livepatch/core.c:1416:13: warning: no previous prototype for function 'arch_klp_remove_breakpoint' [-Wmissing-prototypes] 1416 | void __weak arch_klp_remove_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ kernel/livepatch/core.c:1416:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1416 | void __weak arch_klp_remove_breakpoint(struct arch_klp_data *arch_data, void *old_func) | ^ | static

...

kernel/livepatch/core.c:1420:13: warning: no previous prototype for function 'arch_klp_set_brk_func' [-Wmissing-prototypes] 1420 | void __weak arch_klp_set_brk_func(struct klp_func_node *func_node, void *new_func) | ^ kernel/livepatch/core.c:1420:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1420 | void __weak arch_klp_set_brk_func(struct klp_func_node *func_node, void *new_func) | ^ | static kernel/livepatch/core.c:1809:5: warning: no previous prototype for function 'klp_try_enable_patch' [-Wmissing-prototypes] 1809 | int klp_try_enable_patch(void *data) | ^ kernel/livepatch/core.c:1809:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 1809 | int klp_try_enable_patch(void *data) | ^ | static 14 warnings generated.

vim +/arch_klp_set_brk_func +1420 kernel/livepatch/core.c 1419

1420 void __weak arch_klp_set_brk_func(struct klp_func_node *func_node, void *new_func) 1421 { 1422 func_node->brk_func = new_func; 1423 } 1424

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