Hi Abhinav, kernel test robot noticed the following build errors: [auto build test ERROR on net/main] url: https://github.com/intel-lab-lkp/linux/commits/Abhinav-Jain/libceph-Make-the-input-const-as-per-the-TODO/20240812-033900 base: net/main patch link: https://lore.kernel.org/r/20240811193645.1082042-1-jain.abhinav177%40gmail.com patch subject: [PATCH net] libceph: Make the input const as per the TODO config: i386-buildonly-randconfig-002-20240812 (https://download.01.org/0day-ci/archive/20240812/202408120724.pyUdMxWP-lkp@xxxxxxxxx/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240812/202408120724.pyUdMxWP-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202408120724.pyUdMxWP-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> net/ceph/crypto.c:89:5: error: conflicting types for 'ceph_crypto_key_decode' 89 | int ceph_crypto_key_decode(struct ceph_crypto_key *key, const void **p, const void *end) | ^ net/ceph/crypto.h:25:5: note: previous declaration is here 25 | int ceph_crypto_key_decode(struct ceph_crypto_key *key, void **p, void *end); | ^ >> net/ceph/crypto.c:93:19: error: passing 'const void **' to parameter of type 'void **' discards qualifiers in nested pointer types [-Werror,-Wincompatible-pointer-types-discards-qualifiers] 93 | ceph_decode_need(p, end, 2*sizeof(u16) + sizeof(key->created), bad); | ^ include/linux/ceph/decode.h:59:29: note: expanded from macro 'ceph_decode_need' 59 | if (!likely(ceph_has_room(p, end, n))) \ | ^ include/linux/compiler.h:76:40: note: expanded from macro 'likely' 76 | # define likely(x) __builtin_expect(!!(x), 1) | ^ include/linux/ceph/decode.h:52:41: note: passing argument to parameter 'p' here 52 | static inline bool ceph_has_room(void **p, void *end, size_t n) | ^ >> net/ceph/crypto.c:93:22: error: passing 'const void *' to parameter of type 'void *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers] 93 | ceph_decode_need(p, end, 2*sizeof(u16) + sizeof(key->created), bad); | ^~~ include/linux/ceph/decode.h:59:32: note: expanded from macro 'ceph_decode_need' 59 | if (!likely(ceph_has_room(p, end, n))) \ | ^~~ include/linux/compiler.h:76:40: note: expanded from macro 'likely' 76 | # define likely(x) __builtin_expect(!!(x), 1) | ^ include/linux/ceph/decode.h:52:50: note: passing argument to parameter 'end' here 52 | static inline bool ceph_has_room(void **p, void *end, size_t n) | ^ net/ceph/crypto.c:94:29: error: passing 'const void **' to parameter of type 'void **' discards qualifiers in nested pointer types [-Werror,-Wincompatible-pointer-types-discards-qualifiers] 94 | key->type = ceph_decode_16(p); | ^ include/linux/ceph/decode.h:31:41: note: passing argument to parameter 'p' here 31 | static inline u16 ceph_decode_16(void **p) | ^ net/ceph/crypto.c:95:19: error: passing 'const void **' to parameter of type 'void **' discards qualifiers in nested pointer types [-Werror,-Wincompatible-pointer-types-discards-qualifiers] 95 | ceph_decode_copy(p, &key->created, sizeof(key->created)); | ^ include/linux/ceph/decode.h:43:44: note: passing argument to parameter 'p' here 43 | static inline void ceph_decode_copy(void **p, void *pv, size_t n) | ^ net/ceph/crypto.c:96:28: error: passing 'const void **' to parameter of type 'void **' discards qualifiers in nested pointer types [-Werror,-Wincompatible-pointer-types-discards-qualifiers] 96 | key->len = ceph_decode_16(p); | ^ include/linux/ceph/decode.h:31:41: note: passing argument to parameter 'p' here 31 | static inline u16 ceph_decode_16(void **p) | ^ net/ceph/crypto.c:97:19: error: passing 'const void **' to parameter of type 'void **' discards qualifiers in nested pointer types [-Werror,-Wincompatible-pointer-types-discards-qualifiers] 97 | ceph_decode_need(p, end, key->len, bad); | ^ include/linux/ceph/decode.h:59:29: note: expanded from macro 'ceph_decode_need' 59 | if (!likely(ceph_has_room(p, end, n))) \ | ^ include/linux/compiler.h:76:40: note: expanded from macro 'likely' 76 | # define likely(x) __builtin_expect(!!(x), 1) | ^ include/linux/ceph/decode.h:52:41: note: passing argument to parameter 'p' here 52 | static inline bool ceph_has_room(void **p, void *end, size_t n) | ^ net/ceph/crypto.c:97:22: error: passing 'const void *' to parameter of type 'void *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers] 97 | ceph_decode_need(p, end, key->len, bad); | ^~~ include/linux/ceph/decode.h:59:32: note: expanded from macro 'ceph_decode_need' 59 | if (!likely(ceph_has_room(p, end, n))) \ | ^~~ include/linux/compiler.h:76:40: note: expanded from macro 'likely' 76 | # define likely(x) __builtin_expect(!!(x), 1) | ^ include/linux/ceph/decode.h:52:50: note: passing argument to parameter 'end' here 52 | static inline bool ceph_has_room(void **p, void *end, size_t n) | ^ net/ceph/crypto.c:98:24: error: passing 'const void *' to parameter of type 'void *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers] 98 | ret = set_secret(key, *p); | ^~ net/ceph/crypto.c:23:58: note: passing argument to parameter 'buf' here 23 | static int set_secret(struct ceph_crypto_key *key, void *buf) | ^ net/ceph/crypto.c:99:19: error: passing 'const void *' to parameter of type 'void *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers] 99 | memzero_explicit(*p, key->len); | ^~ include/linux/string.h:356:43: note: passing argument to parameter 's' here 356 | static inline void memzero_explicit(void *s, size_t count) | ^ net/ceph/crypto.c:315:37: error: passing 'const void **' to parameter of type 'void **' discards qualifiers in nested pointer types [-Werror,-Wincompatible-pointer-types-discards-qualifiers] 315 | ret = ceph_crypto_key_decode(ckey, &p, (const char *)prep->data + datalen); | ^~ net/ceph/crypto.h:25:64: note: passing argument to parameter 'p' here 25 | int ceph_crypto_key_decode(struct ceph_crypto_key *key, void **p, void *end); | ^ >> net/ceph/crypto.c:315:41: error: passing 'const char *' to parameter of type 'void *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers] 315 | ret = ceph_crypto_key_decode(ckey, &p, (const char *)prep->data + datalen); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ net/ceph/crypto.h:25:73: note: passing argument to parameter 'end' here 25 | int ceph_crypto_key_decode(struct ceph_crypto_key *key, void **p, void *end); | ^ 12 errors generated. vim +/ceph_crypto_key_decode +89 net/ceph/crypto.c 88 > 89 int ceph_crypto_key_decode(struct ceph_crypto_key *key, const void **p, const void *end) 90 { 91 int ret; 92 > 93 ceph_decode_need(p, end, 2*sizeof(u16) + sizeof(key->created), bad); 94 key->type = ceph_decode_16(p); 95 ceph_decode_copy(p, &key->created, sizeof(key->created)); 96 key->len = ceph_decode_16(p); 97 ceph_decode_need(p, end, key->len, bad); 98 ret = set_secret(key, *p); 99 memzero_explicit(*p, key->len); 100 *p += key->len; 101 return ret; 102 103 bad: 104 dout("failed to decode crypto key\n"); 105 return -EINVAL; 106 } 107 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
