Hi David, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 241523b7d82e629fd115303840c385702bf2ea5e commit: 43d4042e06d2bf96adf67d25e8d91653507a4cf9 [2195/2195] KEYS: Provide a function to load keys from a PGP keyring blob config: x86_64-randconfig-101-20250502 (https://download.01.org/0day-ci/archive/20250502/202505021617.FheAIoZW-lkp@i...) compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250502/202505021617.FheAIoZW-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/202505021617.FheAIoZW-lkp@intel.com/ All error/warnings (new ones prefixed by >>): In file included from crypto/asymmetric_keys/pgp_preload.c:19:

...

include/linux/pgplib.h:26:15: warning: declaration of 'enum pgp_packet_tag' will not be visible outside of this function [-Wvisibility] 26 | enum pgp_packet_tag type, | ^ include/linux/pgplib.h:36:23: error: field has incomplete type 'enum pgp_key_version' 36 | enum pgp_key_version version : 8; | ^ include/linux/pgplib.h:36:7: note: forward declaration of 'enum pgp_key_version' 36 | enum pgp_key_version version : 8; | ^ include/linux/pgplib.h:37:23: error: field has incomplete type 'enum pgp_pubkey_algo' 37 | enum pgp_pubkey_algo pubkey_algo : 8; | ^ include/linux/pgplib.h:37:7: note: forward declaration of 'enum pgp_pubkey_algo' 37 | enum pgp_pubkey_algo pubkey_algo : 8; | ^ crypto/asymmetric_keys/pgp_preload.c:63:10: warning: declaration of 'enum pgp_packet_tag' will not be visible outside of this function [-Wvisibility] 63 | enum pgp_packet_tag type, u8 headerlen, | ^ crypto/asymmetric_keys/pgp_preload.c:63:25: error: variable has incomplete type 'enum pgp_packet_tag' 63 | enum pgp_packet_tag type, u8 headerlen, | ^ crypto/asymmetric_keys/pgp_preload.c:63:10: note: forward declaration of 'enum pgp_packet_tag' 63 | enum pgp_packet_tag type, u8 headerlen, | ^ crypto/asymmetric_keys/pgp_preload.c:107:36: error: use of undeclared identifier 'PGP_PKT_PUBLIC_KEY' 107 | ctx.pgp.types_of_interest = (1 << PGP_PKT_PUBLIC_KEY); | ^ crypto/asymmetric_keys/pgp_preload.c:108:25: error: incompatible function pointer types assigning to 'int (*)(struct pgp_parse_context *, enum pgp_packet_tag, u8, const u8 *, size_t)' (aka 'int (*)(struct pgp_parse_context *, enum pgp_packet_tag, unsigned char, const unsigned char *, unsigned long)') from 'int (struct pgp_parse_context *, enum pgp_packet_tag, u8, const u8 *, size_t)' (aka 'int (struct pgp_parse_context *, enum pgp_packet_tag, unsigned char, const unsigned char *, unsigned long)') [-Wincompatible-function-pointer-types] 108 | ctx.pgp.process_packet = found_pgp_key; | ^ ~~~~~~~~~~~~~ crypto/asymmetric_keys/pgp_preload.c:101:12: warning: no previous prototype for function 'preload_pgp_keys' [-Wmissing-prototypes] 101 | int __init preload_pgp_keys(const u8 *pgpdata, size_t pgpdatalen, | ^ crypto/asymmetric_keys/pgp_preload.c:101:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 101 | int __init preload_pgp_keys(const u8 *pgpdata, size_t pgpdatalen, | ^ | static 3 warnings and 5 errors generated. -- In file included from crypto/asymmetric_keys/pgp_public_key.c:19: In file included from include/linux/mpi.h:21: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:2193: include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ In file included from crypto/asymmetric_keys/pgp_public_key.c:20: include/linux/pgplib.h:26:15: warning: declaration of 'enum pgp_packet_tag' will not be visible outside of this function [-Wvisibility] 26 | enum pgp_packet_tag type, | ^ include/linux/pgplib.h:36:23: error: field has incomplete type 'enum pgp_key_version' 36 | enum pgp_key_version version : 8; | ^ include/linux/pgplib.h:36:7: note: forward declaration of 'enum pgp_key_version' 36 | enum pgp_key_version version : 8; | ^ include/linux/pgplib.h:37:23: error: field has incomplete type 'enum pgp_pubkey_algo' 37 | enum pgp_pubkey_algo pubkey_algo : 8; | ^ include/linux/pgplib.h:37:7: note: forward declaration of 'enum pgp_pubkey_algo' 37 | enum pgp_pubkey_algo pubkey_algo : 8; | ^ crypto/asymmetric_keys/pgp_public_key.c:63:2: error: call to undeclared function 'kenter'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 63 | kenter(""); | ^ crypto/asymmetric_keys/pgp_public_key.c:65:22: error: use of undeclared identifier 'PGP_KEY_VERSION_4' 65 | n = (pgp->version < PGP_KEY_VERSION_4) ? 8 : 6; | ^ crypto/asymmetric_keys/pgp_public_key.c:67:9: error: call to undeclared function 'mpi_key_length'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 67 | ret = mpi_key_length(key_ptr, keylen, nb + i, nn + i); | ^ crypto/asymmetric_keys/pgp_public_key.c:95:21: error: use of undeclared identifier 'PGP_KEY_VERSION_4' 95 | if (pgp->version < PGP_KEY_VERSION_4) { | ^ crypto/asymmetric_keys/pgp_public_key.c:115:2: error: call to undeclared function 'kleave'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 115 | kleave(" = %d", ret); | ^ crypto/asymmetric_keys/pgp_public_key.c:134:42: error: use of undeclared identifier 'PGP_KEY_VERSION_4' 134 | tfm = crypto_alloc_shash(pgp->version < PGP_KEY_VERSION_4 ? | ^ crypto/asymmetric_keys/pgp_public_key.c:191:2: error: call to undeclared function 'kleave'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 191 | kleave(" = %d", ret); | ^ crypto/asymmetric_keys/pgp_public_key.c:199:12: warning: declaration of 'enum pgp_packet_tag' will not be visible outside of this function [-Wvisibility] 199 | enum pgp_packet_tag type, | ^ crypto/asymmetric_keys/pgp_public_key.c:199:27: error: variable has incomplete type 'enum pgp_packet_tag' 199 | enum pgp_packet_tag type, | ^ crypto/asymmetric_keys/pgp_public_key.c:199:12: note: forward declaration of 'enum pgp_packet_tag' 199 | enum pgp_packet_tag type, | ^ crypto/asymmetric_keys/pgp_public_key.c:211:2: error: call to undeclared function 'kenter'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 211 | kenter(",%u,%u,,%zu", type, headerlen, datalen); | ^ crypto/asymmetric_keys/pgp_public_key.c:213:14: error: use of undeclared identifier 'PGP_PKT_USER_ID' 213 | if (type == PGP_PKT_USER_ID) { | ^ crypto/asymmetric_keys/pgp_public_key.c:216:3: error: call to undeclared function 'kleave'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 216 | kleave(" = 0 [user ID]"); | ^ crypto/asymmetric_keys/pgp_public_key.c:221:3: error: call to undeclared function 'kleave'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 221 | kleave(" = -ENOKEY [already]"); | ^ crypto/asymmetric_keys/pgp_public_key.c:234:25: error: use of undeclared identifier 'PGP_PUBKEY__LAST' 234 | if (pgp.pubkey_algo >= PGP_PUBKEY__LAST) | ^ crypto/asymmetric_keys/pgp_public_key.c:236:9: error: use of undeclared identifier 'pgp_to_public_key_algo' 236 | algo = pgp_to_public_key_algo[pgp.pubkey_algo]; | ^ crypto/asymmetric_keys/pgp_public_key.c:252:2: error: call to undeclared function 'kleave'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 252 | kleave(" = 0 [use]"); | ^ crypto/asymmetric_keys/pgp_public_key.c:310:2: error: call to undeclared function 'kenter'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 310 | kenter(""); | ^ crypto/asymmetric_keys/pgp_public_key.c:313:36: error: use of undeclared identifier 'PGP_PKT_PUBLIC_KEY' 313 | ctx.pgp.types_of_interest = (1 << PGP_PKT_PUBLIC_KEY) | | ^ fatal error: too many errors emitted, stopping now [-ferror-limit=] 3 warnings and 20 errors generated.

Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for PGP_KEY_PARSER Depends on [m]: CRYPTO [=y] && ASYMMETRIC_KEY_TYPE [=y] && ASYMMETRIC_PUBLIC_KEY_SUBTYPE [=m] Selected by [y]: - PGP_PRELOAD [=y] && CRYPTO [=y] && ASYMMETRIC_KEY_TYPE [=y] vim +36 include/linux/pgplib.h b78af6579e15dc David Howells 2023-09-12 19 b78af6579e15dc David Howells 2023-09-12 20 /* b78af6579e15dc David Howells 2023-09-12 21 * PGP library packet parser b78af6579e15dc David Howells 2023-09-12 22 */ b78af6579e15dc David Howells 2023-09-12 23 struct pgp_parse_context { b78af6579e15dc David Howells 2023-09-12 24 u64 types_of_interest; b78af6579e15dc David Howells 2023-09-12 25 int (*process_packet)(struct pgp_parse_context *context, b78af6579e15dc David Howells 2023-09-12 @26 enum pgp_packet_tag type, b78af6579e15dc David Howells 2023-09-12 27 u8 headerlen, b78af6579e15dc David Howells 2023-09-12 28 const u8 *data, b78af6579e15dc David Howells 2023-09-12 29 size_t datalen); b78af6579e15dc David Howells 2023-09-12 30 }; b78af6579e15dc David Howells 2023-09-12 31 b78af6579e15dc David Howells 2023-09-12 32 extern int pgp_parse_packets(const u8 *data, size_t datalen, b78af6579e15dc David Howells 2023-09-12 33 struct pgp_parse_context *ctx); b78af6579e15dc David Howells 2023-09-12 34 b78af6579e15dc David Howells 2023-09-12 35 struct pgp_parse_pubkey { b78af6579e15dc David Howells 2023-09-12 @36 enum pgp_key_version version : 8; b78af6579e15dc David Howells 2023-09-12 @37 enum pgp_pubkey_algo pubkey_algo : 8; b78af6579e15dc David Howells 2023-09-12 38 __kernel_old_time_t creation_time; b78af6579e15dc David Howells 2023-09-12 39 __kernel_old_time_t expires_at; b78af6579e15dc David Howells 2023-09-12 40 }; b78af6579e15dc David Howells 2023-09-12 41 :::::: The code at line 36 was first introduced by commit :::::: b78af6579e15dcdff86504da90af77f3e890270e PGPLIB: Basic packet parser :::::: TO: David Howells <dhowells@redhat.com> :::::: CC: zgzxx <zhangguangzhi3@huawei.com> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki