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-allmodconfig (https://download.01.org/0day-ci/archive/20240812/202408120903.UYNxKoDx-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240812/202408120903.UYNxKoDx-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/202408120903.UYNxKoDx-lkp@xxxxxxxxx/ All error/warnings (new ones prefixed by >>): >> net/ceph/crypto.c:89:5: error: conflicting types for 'ceph_crypto_key_decode'; have 'int(struct ceph_crypto_key *, const void **, const void *)' 89 | int ceph_crypto_key_decode(struct ceph_crypto_key *key, const void **p, const void *end) | ^~~~~~~~~~~~~~~~~~~~~~ In file included from net/ceph/crypto.c:17: net/ceph/crypto.h:25:5: note: previous declaration of 'ceph_crypto_key_decode' with type 'int(struct ceph_crypto_key *, void **, void *)' 25 | int ceph_crypto_key_decode(struct ceph_crypto_key *key, void **p, void *end); | ^~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/array_size.h:5, from include/linux/string.h:6, from include/linux/ceph/ceph_debug.h:7, from net/ceph/crypto.c:3: net/ceph/crypto.c: In function 'ceph_crypto_key_decode': >> net/ceph/crypto.c:93:26: error: passing argument 1 of 'ceph_has_room' from incompatible pointer type [-Werror=incompatible-pointer-types] 93 | ceph_decode_need(p, end, 2*sizeof(u16) + sizeof(key->created), bad); | ^ | | | const void ** include/linux/compiler.h:76:45: note: in definition of macro 'likely' 76 | # define likely(x) __builtin_expect(!!(x), 1) | ^ net/ceph/crypto.c:93:9: note: in expansion of macro 'ceph_decode_need' 93 | ceph_decode_need(p, end, 2*sizeof(u16) + sizeof(key->created), bad); | ^~~~~~~~~~~~~~~~ In file included from net/ceph/crypto.c:16: include/linux/ceph/decode.h:52:41: note: expected 'void **' but argument is of type 'const void **' 52 | static inline bool ceph_has_room(void **p, void *end, size_t n) | ~~~~~~~^ >> net/ceph/crypto.c:93:29: warning: passing argument 2 of 'ceph_has_room' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] 93 | ceph_decode_need(p, end, 2*sizeof(u16) + sizeof(key->created), bad); | ^~~ include/linux/compiler.h:76:45: note: in definition of macro 'likely' 76 | # define likely(x) __builtin_expect(!!(x), 1) | ^ net/ceph/crypto.c:93:9: note: in expansion of macro 'ceph_decode_need' 93 | ceph_decode_need(p, end, 2*sizeof(u16) + sizeof(key->created), bad); | ^~~~~~~~~~~~~~~~ include/linux/ceph/decode.h:52:50: note: expected 'void *' but argument is of type 'const void *' 52 | static inline bool ceph_has_room(void **p, void *end, size_t n) | ~~~~~~^~~ >> net/ceph/crypto.c:94:36: error: passing argument 1 of 'ceph_decode_16' from incompatible pointer type [-Werror=incompatible-pointer-types] 94 | key->type = ceph_decode_16(p); | ^ | | | const void ** include/linux/ceph/decode.h:31:41: note: expected 'void **' but argument is of type 'const void **' 31 | static inline u16 ceph_decode_16(void **p) | ~~~~~~~^ >> net/ceph/crypto.c:95:26: error: passing argument 1 of 'ceph_decode_copy' from incompatible pointer type [-Werror=incompatible-pointer-types] 95 | ceph_decode_copy(p, &key->created, sizeof(key->created)); | ^ | | | const void ** include/linux/ceph/decode.h:43:44: note: expected 'void **' but argument is of type 'const void **' 43 | static inline void ceph_decode_copy(void **p, void *pv, size_t n) | ~~~~~~~^ net/ceph/crypto.c:96:35: error: passing argument 1 of 'ceph_decode_16' from incompatible pointer type [-Werror=incompatible-pointer-types] 96 | key->len = ceph_decode_16(p); | ^ | | | const void ** include/linux/ceph/decode.h:31:41: note: expected 'void **' but argument is of type 'const void **' 31 | static inline u16 ceph_decode_16(void **p) | ~~~~~~~^ net/ceph/crypto.c:97:26: error: passing argument 1 of 'ceph_has_room' from incompatible pointer type [-Werror=incompatible-pointer-types] 97 | ceph_decode_need(p, end, key->len, bad); | ^ | | | const void ** include/linux/compiler.h:76:45: note: in definition of macro 'likely' 76 | # define likely(x) __builtin_expect(!!(x), 1) | ^ net/ceph/crypto.c:97:9: note: in expansion of macro 'ceph_decode_need' 97 | ceph_decode_need(p, end, key->len, bad); | ^~~~~~~~~~~~~~~~ include/linux/ceph/decode.h:52:41: note: expected 'void **' but argument is of type 'const void **' 52 | static inline bool ceph_has_room(void **p, void *end, size_t n) | ~~~~~~~^ net/ceph/crypto.c:97:29: warning: passing argument 2 of 'ceph_has_room' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] 97 | ceph_decode_need(p, end, key->len, bad); | ^~~ include/linux/compiler.h:76:45: note: in definition of macro 'likely' 76 | # define likely(x) __builtin_expect(!!(x), 1) | ^ net/ceph/crypto.c:97:9: note: in expansion of macro 'ceph_decode_need' 97 | ceph_decode_need(p, end, key->len, bad); | ^~~~~~~~~~~~~~~~ include/linux/ceph/decode.h:52:50: note: expected 'void *' but argument is of type 'const void *' 52 | static inline bool ceph_has_room(void **p, void *end, size_t n) | ~~~~~~^~~ >> net/ceph/crypto.c:98:31: warning: passing argument 2 of 'set_secret' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] 98 | ret = set_secret(key, *p); | ^~ net/ceph/crypto.c:23:58: note: expected 'void *' but argument is of type 'const void *' 23 | static int set_secret(struct ceph_crypto_key *key, void *buf) | ~~~~~~^~~ >> net/ceph/crypto.c:99:26: warning: passing argument 1 of 'memzero_explicit' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers] 99 | memzero_explicit(*p, key->len); | ^~ include/linux/string.h:356:43: note: expected 'void *' but argument is of type 'const void *' 356 | static inline void memzero_explicit(void *s, size_t count) | ~~~~~~^ net/ceph/crypto.c: In function 'ceph_crypto_key_unarmor': >> net/ceph/crypto.c:126:43: error: passing argument 2 of 'ceph_crypto_key_decode' from incompatible pointer type [-Werror=incompatible-pointer-types] 126 | ret = ceph_crypto_key_decode(key, &p, p + blen); | ^~ | | | void ** net/ceph/crypto.c:89:70: note: expected 'const void **' but argument is of type 'void **' 89 | int ceph_crypto_key_decode(struct ceph_crypto_key *key, const void **p, const void *end) | ~~~~~~~~~~~~~^ cc1: some warnings being treated as errors vim +89 net/ceph/crypto.c 13 14 #include <keys/ceph-type.h> 15 #include <keys/user-type.h> 16 #include <linux/ceph/decode.h> > 17 #include "crypto.h" 18 19 /* 20 * Set ->key and ->tfm. The rest of the key should be filled in before 21 * this function is called. 22 */ 23 static int set_secret(struct ceph_crypto_key *key, void *buf) 24 { 25 unsigned int noio_flag; 26 int ret; 27 28 key->key = NULL; 29 key->tfm = NULL; 30 31 switch (key->type) { 32 case CEPH_CRYPTO_NONE: 33 return 0; /* nothing to do */ 34 case CEPH_CRYPTO_AES: 35 break; 36 default: 37 return -ENOTSUPP; 38 } 39 40 if (!key->len) 41 return -EINVAL; 42 43 key->key = kmemdup(buf, key->len, GFP_NOIO); 44 if (!key->key) { 45 ret = -ENOMEM; 46 goto fail; 47 } 48 49 /* crypto_alloc_sync_skcipher() allocates with GFP_KERNEL */ 50 noio_flag = memalloc_noio_save(); 51 key->tfm = crypto_alloc_sync_skcipher("cbc(aes)", 0, 0); 52 memalloc_noio_restore(noio_flag); 53 if (IS_ERR(key->tfm)) { 54 ret = PTR_ERR(key->tfm); 55 key->tfm = NULL; 56 goto fail; 57 } 58 59 ret = crypto_sync_skcipher_setkey(key->tfm, key->key, key->len); 60 if (ret) 61 goto fail; 62 63 return 0; 64 65 fail: 66 ceph_crypto_key_destroy(key); 67 return ret; 68 } 69 70 int ceph_crypto_key_clone(struct ceph_crypto_key *dst, 71 const struct ceph_crypto_key *src) 72 { 73 memcpy(dst, src, sizeof(struct ceph_crypto_key)); 74 return set_secret(dst, src->key); 75 } 76 77 int ceph_crypto_key_encode(struct ceph_crypto_key *key, void **p, void *end) 78 { 79 if (*p + sizeof(u16) + sizeof(key->created) + 80 sizeof(u16) + key->len > end) 81 return -ERANGE; 82 ceph_encode_16(p, key->type); 83 ceph_encode_copy(p, &key->created, sizeof(key->created)); 84 ceph_encode_16(p, key->len); 85 ceph_encode_copy(p, key->key, key->len); 86 return 0; 87 } 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 } 107 108 int ceph_crypto_key_unarmor(struct ceph_crypto_key *key, const char *inkey) 109 { 110 int inlen = strlen(inkey); 111 int blen = inlen * 3 / 4; 112 void *buf, *p; 113 int ret; 114 115 dout("crypto_key_unarmor %s\n", inkey); 116 buf = kmalloc(blen, GFP_NOFS); 117 if (!buf) 118 return -ENOMEM; 119 blen = ceph_unarmor(buf, inkey, inkey+inlen); 120 if (blen < 0) { 121 kfree(buf); 122 return blen; 123 } 124 125 p = buf; > 126 ret = ceph_crypto_key_decode(key, &p, p + blen); 127 kfree(buf); 128 if (ret) 129 return ret; 130 dout("crypto_key_unarmor key %p type %d len %d\n", key, 131 key->type, key->len); 132 return 0; 133 } 134 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
