Hi 闫海涛, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: d281438782e3c28a3df71a64513a3312d43dcf01 commit: 18e360871c3f648ecb0d8cc9b23fd4268a64c17f [3529/3529] add enfs feature config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20251211/202512110235.L883ZLLi-lkp@i...) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251211/202512110235.L883ZLLi-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/202512110235.L883ZLLi-lkp@intel.com/ All warnings (new ones prefixed by >>):

...

fs/nfs/fs_context.c:374:26: warning: no previous prototype for function 'getNfsMultiPathOpt' [-Wmissing-prototypes] 374 | enum nfsmultipathoptions getNfsMultiPathOpt(int token) | ^ fs/nfs/fs_context.c:374:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 374 | enum nfsmultipathoptions getNfsMultiPathOpt(int token) | ^ | static 1 warning generated. -- fs/nfs/enfs_adapter.c:62:26: warning: no previous prototype for function 'nfs_multipath_router_get' [-Wmissing-prototypes] 62 | struct enfs_adapter_ops *nfs_multipath_router_get(void) | ^ fs/nfs/enfs_adapter.c:62:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 62 | struct enfs_adapter_ops *nfs_multipath_router_get(void) | ^ | static fs/nfs/enfs_adapter.c:78:6: warning: no previous prototype for function 'nfs_multipath_router_put' [-Wmissing-prototypes] 78 | void nfs_multipath_router_put(struct enfs_adapter_ops *ops) | ^ fs/nfs/enfs_adapter.c:78:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 78 | void nfs_multipath_router_put(struct enfs_adapter_ops *ops) | ^ | static fs/nfs/enfs_adapter.c:84:6: warning: no previous prototype for function 'is_valid_option' [-Wmissing-prototypes] 84 | bool is_valid_option(enum nfsmultipathoptions option) | ^ fs/nfs/enfs_adapter.c:84:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 84 | bool is_valid_option(enum nfsmultipathoptions option) | ^ | static 3 warnings generated. -- fs/nfs/enfs/enfs_config.c:554:6: warning: no previous prototype for function 'enfs_glob_match' [-Wmissing-prototypes] 554 | bool enfs_glob_match(char const *pat, char const *str) | ^ fs/nfs/enfs/enfs_config.c:554:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 554 | bool enfs_glob_match(char const *pat, char const *str) | ^ | static 1 warning generated. -- fs/nfs/enfs/enfs_multipath_parse.c:24:6: warning: no previous prototype for function 'nfs_multipath_parse_ip_ipv6_add' [-Wmissing-prototypes] 24 | void nfs_multipath_parse_ip_ipv6_add(struct sockaddr_in6 *sin6, int add_num) | ^ fs/nfs/enfs/enfs_multipath_parse.c:24:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 24 | void nfs_multipath_parse_ip_ipv6_add(struct sockaddr_in6 *sin6, int add_num) | ^ | static fs/nfs/enfs/enfs_multipath_parse.c:162:5: warning: no previous prototype for function 'enfs_parse_ip_single' [-Wmissing-prototypes] 162 | int enfs_parse_ip_single(struct nfs_ip_list *ip_list, struct net *net_ns, | ^ fs/nfs/enfs/enfs_multipath_parse.c:162:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 162 | int enfs_parse_ip_single(struct nfs_ip_list *ip_list, struct net *net_ns, | ^ | static fs/nfs/enfs/enfs_multipath_parse.c:209:7: warning: no previous prototype for function 'nfs_multipath_parse_ip_list_get_cursor' [-Wmissing-prototypes] 209 | char *nfs_multipath_parse_ip_list_get_cursor(char **buf_to_parse, bool *single) | ^ fs/nfs/enfs/enfs_multipath_parse.c:209:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 209 | char *nfs_multipath_parse_ip_list_get_cursor(char **buf_to_parse, bool *single) | ^ | static fs/nfs/enfs/enfs_multipath_parse.c:236:6: warning: no previous prototype for function 'enfs_valid_ip' [-Wmissing-prototypes] 236 | bool enfs_valid_ip(char *str, struct net *net) | ^ fs/nfs/enfs/enfs_multipath_parse.c:236:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 236 | bool enfs_valid_ip(char *str, struct net *net) | ^ | static fs/nfs/enfs/enfs_multipath_parse.c:248:5: warning: no previous prototype for function 'nfs_multipath_parse_ip_list' [-Wmissing-prototypes] 248 | int nfs_multipath_parse_ip_list(char *buffer, struct net *net_ns, | ^ fs/nfs/enfs/enfs_multipath_parse.c:248:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 248 | int nfs_multipath_parse_ip_list(char *buffer, struct net *net_ns, | ^ | static fs/nfs/enfs/enfs_multipath_parse.c:361:6: warning: no previous prototype for function 'isInvalidDns' [-Wmissing-prototypes] 361 | bool isInvalidDns(char *cursor, struct net *net_ns) | ^ fs/nfs/enfs/enfs_multipath_parse.c:361:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 361 | bool isInvalidDns(char *cursor, struct net *net_ns) | ^ | static fs/nfs/enfs/enfs_multipath_parse.c:387:5: warning: no previous prototype for function 'nfs_multipath_parse_dns_list' [-Wmissing-prototypes] 387 | int nfs_multipath_parse_dns_list(char *buffer, struct net *net_ns, | ^ fs/nfs/enfs/enfs_multipath_parse.c:387:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 387 | int nfs_multipath_parse_dns_list(char *buffer, struct net *net_ns, | ^ | static fs/nfs/enfs/enfs_multipath_parse.c:431:5: warning: no previous prototype for function 'parse_remote_type' [-Wmissing-prototypes] 431 | int parse_remote_type(char *str, struct net *net) | ^ fs/nfs/enfs/enfs_multipath_parse.c:431:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 431 | int parse_remote_type(char *str, struct net *net) | ^ | static fs/nfs/enfs/enfs_multipath_parse.c:471:5: warning: no previous prototype for function 'nfs_multipath_parse_options_check_ipv4_valid' [-Wmissing-prototypes] 471 | int nfs_multipath_parse_options_check_ipv4_valid(struct sockaddr_in *addr) | ^ fs/nfs/enfs/enfs_multipath_parse.c:471:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 471 | int nfs_multipath_parse_options_check_ipv4_valid(struct sockaddr_in *addr) | ^ | static fs/nfs/enfs/enfs_multipath_parse.c:478:5: warning: no previous prototype for function 'nfs_multipath_parse_options_check_ipv6_valid' [-Wmissing-prototypes] 478 | int nfs_multipath_parse_options_check_ipv6_valid(struct sockaddr_in6 *addr) | ^ fs/nfs/enfs/enfs_multipath_parse.c:478:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 478 | int nfs_multipath_parse_options_check_ipv6_valid(struct sockaddr_in6 *addr) | ^ | static fs/nfs/enfs/enfs_multipath_parse.c:494:5: warning: no previous prototype for function 'nfs_multipath_parse_options_check_ip_valid' [-Wmissing-prototypes] 494 | int nfs_multipath_parse_options_check_ip_valid(struct sockaddr_storage *address) | ^ fs/nfs/enfs/enfs_multipath_parse.c:494:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 494 | int nfs_multipath_parse_options_check_ip_valid(struct sockaddr_storage *address) | ^ | static fs/nfs/enfs/enfs_multipath_parse.c:510:5: warning: no previous prototype for function 'nfs_multipath_parse_options_check_valid' [-Wmissing-prototypes] 510 | int nfs_multipath_parse_options_check_valid( | ^ fs/nfs/enfs/enfs_multipath_parse.c:510:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 510 | int nfs_multipath_parse_options_check_valid( | ^ | static fs/nfs/enfs/enfs_multipath_parse.c:536:5: warning: no previous prototype for function 'nfs_multipath_parse_options_check_duplicate' [-Wmissing-prototypes] 536 | int nfs_multipath_parse_options_check_duplicate( | ^ fs/nfs/enfs/enfs_multipath_parse.c:536:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 536 | int nfs_multipath_parse_options_check_duplicate( | ^ | static fs/nfs/enfs/enfs_multipath_parse.c:562:5: warning: no previous prototype for function 'nfs_multipath_parse_options_check' [-Wmissing-prototypes] 562 | int nfs_multipath_parse_options_check(struct multipath_mount_options *options) | ^ fs/nfs/enfs/enfs_multipath_parse.c:562:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 562 | int nfs_multipath_parse_options_check(struct multipath_mount_options *options) | ^ | static 14 warnings generated. -- fs/nfs/enfs/enfs_roundrobin.c:108:1: warning: no previous prototype for function 'enfs_lb_switch_find_first_active_xprt' [-Wmissing-prototypes] 108 | enfs_lb_switch_find_first_active_xprt(struct rpc_xprt_switch *xps) | ^ fs/nfs/enfs/enfs_roundrobin.c:107:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 107 | struct rpc_xprt * | ^ | static fs/nfs/enfs/enfs_roundrobin.c:119:18: warning: no previous prototype for function 'enfs_lb_switch_get_main_xprt' [-Wmissing-prototypes] 119 | struct rpc_xprt *enfs_lb_switch_get_main_xprt(struct rpc_xprt_switch *xps) | ^ fs/nfs/enfs/enfs_roundrobin.c:119:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 119 | struct rpc_xprt *enfs_lb_switch_get_main_xprt(struct rpc_xprt_switch *xps) | ^ | static fs/nfs/enfs/enfs_roundrobin.c:169:18: warning: no previous prototype for function 'enfs_lb_get_singular_xprt' [-Wmissing-prototypes] 169 | struct rpc_xprt *enfs_lb_get_singular_xprt(struct rpc_xprt_switch *xps, | ^ fs/nfs/enfs/enfs_roundrobin.c:169:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 169 | struct rpc_xprt *enfs_lb_get_singular_xprt(struct rpc_xprt_switch *xps, | ^ | static fs/nfs/enfs/enfs_roundrobin.c:332:5: warning: no previous prototype for function 'enfs_lb_revert_policy' [-Wmissing-prototypes] 332 | int enfs_lb_revert_policy(struct rpc_clnt *clnt, void *data) | ^ fs/nfs/enfs/enfs_roundrobin.c:332:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 332 | int enfs_lb_revert_policy(struct rpc_clnt *clnt, void *data) | ^ | static 4 warnings generated. -- fs/nfs/enfs/enfs_multipath.c:321:5: warning: no previous prototype for function 'enfs_configure_xprt_to_clnt' [-Wmissing-prototypes] 321 | int enfs_configure_xprt_to_clnt(struct xprt_create *xprtargs, | ^ fs/nfs/enfs/enfs_multipath.c:321:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 321 | int enfs_configure_xprt_to_clnt(struct xprt_create *xprtargs, | ^ | static fs/nfs/enfs/enfs_multipath.c:357:6: warning: no previous prototype for function 'enfs_cmp_addrs' [-Wmissing-prototypes] 357 | bool enfs_cmp_addrs(struct sockaddr_storage *srcaddr, | ^ fs/nfs/enfs/enfs_multipath.c:357:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 357 | bool enfs_cmp_addrs(struct sockaddr_storage *srcaddr, | ^ | static fs/nfs/enfs/enfs_multipath.c:374:6: warning: no previous prototype for function 'enfs_xprt_addrs_is_same' [-Wmissing-prototypes] 374 | bool enfs_xprt_addrs_is_same(struct rpc_xprt *xprt, | ^ fs/nfs/enfs/enfs_multipath.c:374:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 374 | bool enfs_xprt_addrs_is_same(struct rpc_xprt *xprt, | ^ | static fs/nfs/enfs/enfs_multipath.c:393:6: warning: no previous prototype for function 'enfs_already_have_xprt' [-Wmissing-prototypes] 393 | bool enfs_already_have_xprt(struct rpc_clnt *clnt, | ^ fs/nfs/enfs/enfs_multipath.c:393:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 393 | bool enfs_already_have_xprt(struct rpc_clnt *clnt, | ^ | static fs/nfs/enfs/enfs_multipath.c:589:6: warning: variable 'link_count' set but not used [-Wunused-but-set-variable] 589 | int link_count = 0; | ^ fs/nfs/enfs/enfs_multipath.c:836:5: warning: no previous prototype for function 'enfs_multipath_create_thread' [-Wmissing-prototypes] 836 | int enfs_multipath_create_thread(void *data) | ^ fs/nfs/enfs/enfs_multipath.c:836:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 836 | int enfs_multipath_create_thread(void *data) | ^ | static fs/nfs/enfs/enfs_multipath.c:932:6: warning: no previous prototype for function 'enfs_create_multi_xprt' [-Wmissing-prototypes] 932 | void enfs_create_multi_xprt(struct rpc_create_args *args, struct rpc_clnt *clnt) | ^ fs/nfs/enfs/enfs_multipath.c:932:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 932 | void enfs_create_multi_xprt(struct rpc_create_args *args, struct rpc_clnt *clnt) | ^ | static fs/nfs/enfs/enfs_multipath.c:988:6: warning: no previous prototype for function 'enfs_release_rpc_clnt' [-Wmissing-prototypes] 988 | void enfs_release_rpc_clnt(struct rpc_clnt *clnt) | ^ fs/nfs/enfs/enfs_multipath.c:988:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 988 | void enfs_release_rpc_clnt(struct rpc_clnt *clnt) | ^ | static 8 warnings generated. -- fs/nfs/enfs/enfs_proc.c:558:30: warning: unused variable 'shardview_proc_fops' [-Wunused-const-variable] 558 | static const struct proc_ops shardview_proc_fops = { | ^~~~~~~~~~~~~~~~~~~ 1 warning generated. -- fs/nfs/enfs/enfs_remount.c:105:6: warning: no previous prototype for function 'enfs_clnt_delete_obsolete_xprts' [-Wmissing-prototypes] 105 | void enfs_clnt_delete_obsolete_xprts(struct nfs_client *nfs_client, | ^ fs/nfs/enfs/enfs_remount.c:105:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 105 | void enfs_clnt_delete_obsolete_xprts(struct nfs_client *nfs_client, | ^ | static 1 warning generated. -- fs/nfs/enfs/pm_state.c:83:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable] 83 | int ret; | ^ 1 warning generated. -- fs/nfs/enfs/enfs_rpc_init.c:7:5: warning: no previous prototype for function 'enfs_rpc_init' [-Wmissing-prototypes] 7 | int enfs_rpc_init(void) | ^ fs/nfs/enfs/enfs_rpc_init.c:7:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 7 | int enfs_rpc_init(void) | ^ | static 1 warning generated. -- fs/nfs/enfs/exten_call.c:60:5: warning: no previous prototype for function 'NfsExtendProcInfoExtendEncode' [-Wmissing-prototypes] 60 | int NfsExtendProcInfoExtendEncode(char *pbuf, int buflen, struct enfs_extend3_args *pObj) | ^ fs/nfs/enfs/exten_call.c:60:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 60 | int NfsExtendProcInfoExtendEncode(char *pbuf, int buflen, struct enfs_extend3_args *pObj) | ^ | static fs/nfs/enfs/exten_call.c:178:5: warning: no previous prototype for function 'NfsExtendDecodeFsShard' [-Wmissing-prototypes] 178 | int NfsExtendDecodeFsShard(struct enfs_extend3_rsp **extend3ResOut, __be32 *p, | ^ fs/nfs/enfs/exten_call.c:178:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 178 | int NfsExtendDecodeFsShard(struct enfs_extend3_rsp **extend3ResOut, __be32 *p, | ^ | static fs/nfs/enfs/exten_call.c:263:5: warning: no previous prototype for function 'NfsExtendDecodeLifInfo' [-Wmissing-prototypes] 263 | int NfsExtendDecodeLifInfo(struct enfs_extend3_rsp **extend3ResOut, __be32 *p, | ^ fs/nfs/enfs/exten_call.c:263:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 263 | int NfsExtendDecodeLifInfo(struct enfs_extend3_rsp **extend3ResOut, __be32 *p, | ^ | static fs/nfs/enfs/exten_call.c:531:5: warning: no previous prototype for function 'EnfsExtendDecodePreCheck' [-Wmissing-prototypes] 531 | int EnfsExtendDecodePreCheck(uint32_t version, uint32_t opCode) | ^ fs/nfs/enfs/exten_call.c:531:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 531 | int EnfsExtendDecodePreCheck(uint32_t version, uint32_t opCode) | ^ | static fs/nfs/enfs/exten_call.c:542:5: warning: no previous prototype for function 'NfsExtendProcInfoExtendDecode' [-Wmissing-prototypes] 542 | int NfsExtendProcInfoExtendDecode(char *buf, uint32_t bufLen, | ^ fs/nfs/enfs/exten_call.c:542:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 542 | int NfsExtendProcInfoExtendDecode(char *buf, uint32_t bufLen, | ^ | static fs/nfs/enfs/exten_call.c:597:5: warning: no previous prototype for function 'dorado_extend_route' [-Wmissing-prototypes] 597 | int dorado_extend_route(struct rpc_clnt *clnt, struct rpc_xprt *xprt, char *buf, | ^ fs/nfs/enfs/exten_call.c:597:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 597 | int dorado_extend_route(struct rpc_clnt *clnt, struct rpc_xprt *xprt, char *buf, | ^ | static fs/nfs/enfs/exten_call.c:662:6: warning: no previous prototype for function 'nego_enfs_version' [-Wmissing-prototypes] 662 | void nego_enfs_version(struct rpc_clnt *clnt, struct enfs_extend3_args *args) | ^ fs/nfs/enfs/exten_call.c:662:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 662 | void nego_enfs_version(struct rpc_clnt *clnt, struct enfs_extend3_args *args) | ^ | static fs/nfs/enfs/exten_call.c:955:6: warning: no previous prototype for function 'NfsExtendDnsQuerySetArgs' [-Wmissing-prototypes] 955 | void NfsExtendDnsQuerySetArgs(struct enfs_extend3_args *args, uint32_t ip_type, | ^ fs/nfs/enfs/exten_call.c:955:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 955 | void NfsExtendDnsQuerySetArgs(struct enfs_extend3_args *args, uint32_t ip_type, | ^ | static fs/nfs/enfs/exten_call.c:966:6: warning: no previous prototype for function 'NfsExtendDnsQuerySetRes' [-Wmissing-prototypes] 966 | void NfsExtendDnsQuerySetRes(struct enfs_extend3_rsp *extend3Res, | ^ fs/nfs/enfs/exten_call.c:966:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 966 | void NfsExtendDnsQuerySetRes(struct enfs_extend3_rsp *extend3Res, | ^ | static In file included from fs/nfs/enfs/exten_call.c:5: In file included from include/linux/string.h:294: include/linux/fortify-string.h:606:4: warning: call to '__read_overflow2_field' declared with 'warning' attribute: detected read beyond size of field (2nd parameter); maybe use struct_group()? [-Wattribute-warning] 606 | __read_overflow2_field(q_size_field, size); | ^ 10 warnings generated. ..

vim +/enfs_glob_match +554 fs/nfs/enfs/enfs_config.c 553

554 bool enfs_glob_match(char const *pat, char const *str) 555 { 556 unsigned char c; 557 unsigned char d; 558 char const *back_pat = NULL; 559 char const *back_str = str; 560 bool match = false; 561 bool inverted = (*pat == '!'); 562 char const *class = pat + inverted; 563 unsigned char a = *class++; 564 unsigned char b = a; 565 566 for (;;) { 567 c = *str++; 568 d = *pat++; 569 570 switch (d) { 571 case '?': 572 if (c == '\0') 573 return false; 574 break; 575 case '*': 576 if (*pat == '\0') 577 return true; 578 back_pat = pat; 579 back_str = --str; 580 break; 581 case '[': { 582 match = false; 583 inverted = (*pat == '!'); 584 class = pat + inverted; 585 a = *class++; 586 587 do { 588 b = a; 589 if (a == '\0') 590 goto literal; 591 592 if (class[0] == '-' && class[1] != ']') { 593 b = class[1]; 594 595 if (b == '\0') 596 goto literal; 597 598 class += 2; 599 } 600 match |= (a <= c && c <= b); 601 } while ((a = *class++) != ']'); 602 603 if (match == inverted) 604 goto backtrack; 605 pat = class; 606 } 607 break; 608 609 case '\\': 610 d = *pat++; 611 break; 612 default: 613 literal: 614 if (c == d) { 615 if (d == '\0') 616 return true; 617 break; 618 } 619 backtrack: 620 if (c == '\0' || !back_pat) 621 return false; 622 pat = back_pat; 623 str = ++back_str; 624 break; 625 } 626 } 627 } 628

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