| File: | src/debug.c |
| Warning: | line 604, column 13 Value stored to 'remaining' is never read |
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| 1 | /* |
| 2 | * Copyright (c) 2009-2020, Salvatore Sanfilippo <antirez at gmail dot com> |
| 3 | * Copyright (c) 2020, Redis Labs, Inc |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions are met: |
| 8 | * |
| 9 | * * Redistributions of source code must retain the above copyright notice, |
| 10 | * this list of conditions and the following disclaimer. |
| 11 | * * Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * * Neither the name of Redis nor the names of its contributors may be used |
| 15 | * to endorse or promote products derived from this software without |
| 16 | * specific prior written permission. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 22 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 28 | * POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #include "server.h" |
| 32 | #include "sha1.h" /* SHA1 is used for DEBUG DIGEST */ |
| 33 | #include "crc64.h" |
| 34 | #include "bio.h" |
| 35 | |
| 36 | #include <arpa/inet.h> |
| 37 | #include <signal.h> |
| 38 | #include <dlfcn.h> |
| 39 | #include <fcntl.h> |
| 40 | #include <unistd.h> |
| 41 | |
| 42 | #ifdef HAVE_BACKTRACE1 |
| 43 | #include <execinfo.h> |
| 44 | #ifndef __OpenBSD__ |
| 45 | #include <ucontext.h> |
| 46 | #else |
| 47 | typedef ucontext_t sigcontext_t; |
| 48 | #endif |
| 49 | #endif /* HAVE_BACKTRACE */ |
| 50 | |
| 51 | #ifdef __CYGWIN__ |
| 52 | #ifndef SA_ONSTACK0x08000000 |
| 53 | #define SA_ONSTACK0x08000000 0x08000000 |
| 54 | #endif |
| 55 | #endif |
| 56 | |
| 57 | #if defined(__APPLE__) && defined(__arm64__) |
| 58 | #include <mach/mach.h> |
| 59 | #endif |
| 60 | |
| 61 | /* Globals */ |
| 62 | static int bug_report_start = 0; /* True if bug report header was already logged. */ |
| 63 | static pthread_mutex_t bug_report_start_mutex = PTHREAD_MUTEX_INITIALIZER{ { 0, 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, 0, { 0, 0 } } }; |
| 64 | |
| 65 | /* Forward declarations */ |
| 66 | void bugReportStart(void); |
| 67 | void printCrashReport(void); |
| 68 | void bugReportEnd(int killViaSignal, int sig); |
| 69 | void logStackTrace(void *eip, int uplevel); |
| 70 | |
| 71 | /* ================================= Debugging ============================== */ |
| 72 | |
| 73 | /* Compute the sha1 of string at 's' with 'len' bytes long. |
| 74 | * The SHA1 is then xored against the string pointed by digest. |
| 75 | * Since xor is commutative, this operation is used in order to |
| 76 | * "add" digests relative to unordered elements. |
| 77 | * |
| 78 | * So digest(a,b,c,d) will be the same of digest(b,a,c,d) */ |
| 79 | void xorDigest(unsigned char *digest, void *ptr, size_t len) { |
| 80 | SHA1_CTX ctx; |
| 81 | unsigned char hash[20], *s = ptr; |
| 82 | int j; |
| 83 | |
| 84 | SHA1Init(&ctx); |
| 85 | SHA1Update(&ctx,s,len); |
| 86 | SHA1Final(hash,&ctx); |
| 87 | |
| 88 | for (j = 0; j < 20; j++) |
| 89 | digest[j] ^= hash[j]; |
| 90 | } |
| 91 | |
| 92 | void xorStringObjectDigest(unsigned char *digest, robj *o) { |
| 93 | o = getDecodedObject(o); |
| 94 | xorDigest(digest,o->ptr,sdslen(o->ptr)); |
| 95 | decrRefCount(o); |
| 96 | } |
| 97 | |
| 98 | /* This function instead of just computing the SHA1 and xoring it |
| 99 | * against digest, also perform the digest of "digest" itself and |
| 100 | * replace the old value with the new one. |
| 101 | * |
| 102 | * So the final digest will be: |
| 103 | * |
| 104 | * digest = SHA1(digest xor SHA1(data)) |
| 105 | * |
| 106 | * This function is used every time we want to preserve the order so |
| 107 | * that digest(a,b,c,d) will be different than digest(b,c,d,a) |
| 108 | * |
| 109 | * Also note that mixdigest("foo") followed by mixdigest("bar") |
| 110 | * will lead to a different digest compared to "fo", "obar". |
| 111 | */ |
| 112 | void mixDigest(unsigned char *digest, void *ptr, size_t len) { |
| 113 | SHA1_CTX ctx; |
| 114 | char *s = ptr; |
| 115 | |
| 116 | xorDigest(digest,s,len); |
| 117 | SHA1Init(&ctx); |
| 118 | SHA1Update(&ctx,digest,20); |
| 119 | SHA1Final(digest,&ctx); |
| 120 | } |
| 121 | |
| 122 | void mixStringObjectDigest(unsigned char *digest, robj *o) { |
| 123 | o = getDecodedObject(o); |
| 124 | mixDigest(digest,o->ptr,sdslen(o->ptr)); |
| 125 | decrRefCount(o); |
| 126 | } |
| 127 | |
| 128 | /* This function computes the digest of a data structure stored in the |
| 129 | * object 'o'. It is the core of the DEBUG DIGEST command: when taking the |
| 130 | * digest of a whole dataset, we take the digest of the key and the value |
| 131 | * pair, and xor all those together. |
| 132 | * |
| 133 | * Note that this function does not reset the initial 'digest' passed, it |
| 134 | * will continue mixing this object digest to anything that was already |
| 135 | * present. */ |
| 136 | void xorObjectDigest(redisDb *db, robj *keyobj, unsigned char *digest, robj *o) { |
| 137 | uint32_t aux = htonl(o->type)__bswap_32 (o->type); |
| 138 | mixDigest(digest,&aux,sizeof(aux)); |
| 139 | long long expiretime = getExpire(db,keyobj); |
| 140 | char buf[128]; |
| 141 | |
| 142 | /* Save the key and associated value */ |
| 143 | if (o->type == OBJ_STRING0) { |
| 144 | mixStringObjectDigest(digest,o); |
| 145 | } else if (o->type == OBJ_LIST1) { |
| 146 | listTypeIterator *li = listTypeInitIterator(o,0,LIST_TAIL1); |
| 147 | listTypeEntry entry; |
| 148 | while(listTypeNext(li,&entry)) { |
| 149 | robj *eleobj = listTypeGet(&entry); |
| 150 | mixStringObjectDigest(digest,eleobj); |
| 151 | decrRefCount(eleobj); |
| 152 | } |
| 153 | listTypeReleaseIterator(li); |
| 154 | } else if (o->type == OBJ_SET2) { |
| 155 | setTypeIterator *si = setTypeInitIterator(o); |
| 156 | sds sdsele; |
| 157 | while((sdsele = setTypeNextObject(si)) != NULL((void*)0)) { |
| 158 | xorDigest(digest,sdsele,sdslen(sdsele)); |
| 159 | sdsfree(sdsele); |
| 160 | } |
| 161 | setTypeReleaseIterator(si); |
| 162 | } else if (o->type == OBJ_ZSET3) { |
| 163 | unsigned char eledigest[20]; |
| 164 | |
| 165 | if (o->encoding == OBJ_ENCODING_ZIPLIST5) { |
| 166 | unsigned char *zl = o->ptr; |
| 167 | unsigned char *eptr, *sptr; |
| 168 | unsigned char *vstr; |
| 169 | unsigned int vlen; |
| 170 | long long vll; |
| 171 | double score; |
| 172 | |
| 173 | eptr = ziplistIndex(zl,0); |
| 174 | serverAssert(eptr != NULL)((eptr != ((void*)0))?(void)0 : (_serverAssert("eptr != NULL" ,"debug.c",174),__builtin_unreachable())); |
| 175 | sptr = ziplistNext(zl,eptr); |
| 176 | serverAssert(sptr != NULL)((sptr != ((void*)0))?(void)0 : (_serverAssert("sptr != NULL" ,"debug.c",176),__builtin_unreachable())); |
| 177 | |
| 178 | while (eptr != NULL((void*)0)) { |
| 179 | serverAssert(ziplistGet(eptr,&vstr,&vlen,&vll))((ziplistGet(eptr,&vstr,&vlen,&vll))?(void)0 : (_serverAssert ("ziplistGet(eptr,&vstr,&vlen,&vll)","debug.c",179 ),__builtin_unreachable())); |
| 180 | score = zzlGetScore(sptr); |
| 181 | |
| 182 | memset(eledigest,0,20); |
| 183 | if (vstr != NULL((void*)0)) { |
| 184 | mixDigest(eledigest,vstr,vlen); |
| 185 | } else { |
| 186 | ll2string(buf,sizeof(buf),vll); |
| 187 | mixDigest(eledigest,buf,strlen(buf)); |
| 188 | } |
| 189 | |
| 190 | snprintf(buf,sizeof(buf),"%.17g",score); |
| 191 | mixDigest(eledigest,buf,strlen(buf)); |
| 192 | xorDigest(digest,eledigest,20); |
| 193 | zzlNext(zl,&eptr,&sptr); |
| 194 | } |
| 195 | } else if (o->encoding == OBJ_ENCODING_SKIPLIST7) { |
| 196 | zset *zs = o->ptr; |
| 197 | dictIterator *di = dictGetIterator(zs->dict); |
| 198 | dictEntry *de; |
| 199 | |
| 200 | while((de = dictNext(di)) != NULL((void*)0)) { |
| 201 | sds sdsele = dictGetKey(de)((de)->key); |
| 202 | double *score = dictGetVal(de)((de)->v.val); |
| 203 | |
| 204 | snprintf(buf,sizeof(buf),"%.17g",*score); |
| 205 | memset(eledigest,0,20); |
| 206 | mixDigest(eledigest,sdsele,sdslen(sdsele)); |
| 207 | mixDigest(eledigest,buf,strlen(buf)); |
| 208 | xorDigest(digest,eledigest,20); |
| 209 | } |
| 210 | dictReleaseIterator(di); |
| 211 | } else { |
| 212 | serverPanic("Unknown sorted set encoding")_serverPanic("debug.c",212,"Unknown sorted set encoding"),__builtin_unreachable (); |
| 213 | } |
| 214 | } else if (o->type == OBJ_HASH4) { |
| 215 | hashTypeIterator *hi = hashTypeInitIterator(o); |
| 216 | while (hashTypeNext(hi) != C_ERR-1) { |
| 217 | unsigned char eledigest[20]; |
| 218 | sds sdsele; |
| 219 | |
| 220 | memset(eledigest,0,20); |
| 221 | sdsele = hashTypeCurrentObjectNewSds(hi,OBJ_HASH_KEY1); |
| 222 | mixDigest(eledigest,sdsele,sdslen(sdsele)); |
| 223 | sdsfree(sdsele); |
| 224 | sdsele = hashTypeCurrentObjectNewSds(hi,OBJ_HASH_VALUE2); |
| 225 | mixDigest(eledigest,sdsele,sdslen(sdsele)); |
| 226 | sdsfree(sdsele); |
| 227 | xorDigest(digest,eledigest,20); |
| 228 | } |
| 229 | hashTypeReleaseIterator(hi); |
| 230 | } else if (o->type == OBJ_STREAM6) { |
| 231 | streamIterator si; |
| 232 | streamIteratorStart(&si,o->ptr,NULL((void*)0),NULL((void*)0),0); |
| 233 | streamID id; |
| 234 | int64_t numfields; |
| 235 | |
| 236 | while(streamIteratorGetID(&si,&id,&numfields)) { |
| 237 | sds itemid = sdscatfmt(sdsempty(),"%U.%U",id.ms,id.seq); |
| 238 | mixDigest(digest,itemid,sdslen(itemid)); |
| 239 | sdsfree(itemid); |
| 240 | |
| 241 | while(numfields--) { |
| 242 | unsigned char *field, *value; |
| 243 | int64_t field_len, value_len; |
| 244 | streamIteratorGetField(&si,&field,&value, |
| 245 | &field_len,&value_len); |
| 246 | mixDigest(digest,field,field_len); |
| 247 | mixDigest(digest,value,value_len); |
| 248 | } |
| 249 | } |
| 250 | streamIteratorStop(&si); |
| 251 | } else if (o->type == OBJ_MODULE5) { |
| 252 | RedisModuleDigest md; |
| 253 | moduleValue *mv = o->ptr; |
| 254 | moduleType *mt = mv->type; |
| 255 | moduleInitDigestContext(md)do { memset(md.o,0,sizeof(md.o)); memset(md.x,0,sizeof(md.x)) ; } while(0); |
| 256 | if (mt->digest) { |
| 257 | mt->digest(&md,mv->value); |
| 258 | xorDigest(digest,md.x,sizeof(md.x)); |
| 259 | } |
| 260 | } else { |
| 261 | serverPanic("Unknown object type")_serverPanic("debug.c",261,"Unknown object type"),__builtin_unreachable (); |
| 262 | } |
| 263 | /* If the key has an expire, add it to the mix */ |
| 264 | if (expiretime != -1) xorDigest(digest,"!!expire!!",10); |
| 265 | } |
| 266 | |
| 267 | /* Compute the dataset digest. Since keys, sets elements, hashes elements |
| 268 | * are not ordered, we use a trick: every aggregate digest is the xor |
| 269 | * of the digests of their elements. This way the order will not change |
| 270 | * the result. For list instead we use a feedback entering the output digest |
| 271 | * as input in order to ensure that a different ordered list will result in |
| 272 | * a different digest. */ |
| 273 | void computeDatasetDigest(unsigned char *final) { |
| 274 | unsigned char digest[20]; |
| 275 | dictIterator *di = NULL((void*)0); |
| 276 | dictEntry *de; |
| 277 | int j; |
| 278 | uint32_t aux; |
| 279 | |
| 280 | memset(final,0,20); /* Start with a clean result */ |
| 281 | |
| 282 | for (j = 0; j < server.dbnum; j++) { |
| 283 | redisDb *db = server.db+j; |
| 284 | |
| 285 | if (dictSize(db->dict)((db->dict)->ht[0].used+(db->dict)->ht[1].used) == 0) continue; |
| 286 | di = dictGetSafeIterator(db->dict); |
| 287 | |
| 288 | /* hash the DB id, so the same dataset moved in a different |
| 289 | * DB will lead to a different digest */ |
| 290 | aux = htonl(j)__bswap_32 (j); |
| 291 | mixDigest(final,&aux,sizeof(aux)); |
| 292 | |
| 293 | /* Iterate this DB writing every entry */ |
| 294 | while((de = dictNext(di)) != NULL((void*)0)) { |
| 295 | sds key; |
| 296 | robj *keyobj, *o; |
| 297 | |
| 298 | memset(digest,0,20); /* This key-val digest */ |
| 299 | key = dictGetKey(de)((de)->key); |
| 300 | keyobj = createStringObject(key,sdslen(key)); |
| 301 | |
| 302 | mixDigest(digest,key,sdslen(key)); |
| 303 | |
| 304 | o = dictGetVal(de)((de)->v.val); |
| 305 | xorObjectDigest(db,keyobj,digest,o); |
| 306 | |
| 307 | /* We can finally xor the key-val digest to the final digest */ |
| 308 | xorDigest(final,digest,20); |
| 309 | decrRefCount(keyobj); |
| 310 | } |
| 311 | dictReleaseIterator(di); |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | #ifdef USE_JEMALLOC1 |
| 316 | void mallctl_int(client *c, robj **argv, int argc) { |
| 317 | int ret; |
| 318 | /* start with the biggest size (int64), and if that fails, try smaller sizes (int32, bool) */ |
| 319 | int64_t old = 0, val; |
| 320 | if (argc > 1) { |
| 321 | long long ll; |
| 322 | if (getLongLongFromObjectOrReply(c, argv[1], &ll, NULL((void*)0)) != C_OK0) |
| 323 | return; |
| 324 | val = ll; |
| 325 | } |
| 326 | size_t sz = sizeof(old); |
| 327 | while (sz > 0) { |
| 328 | if ((ret=je_mallctl(argv[0]->ptr, &old, &sz, argc > 1? &val: NULL((void*)0), argc > 1?sz: 0))) { |
| 329 | if (ret == EPERM1 && argc > 1) { |
| 330 | /* if this option is write only, try just writing to it. */ |
| 331 | if (!(ret=je_mallctl(argv[0]->ptr, NULL((void*)0), 0, &val, sz))) { |
| 332 | addReply(c, shared.ok); |
| 333 | return; |
| 334 | } |
| 335 | } |
| 336 | if (ret==EINVAL22) { |
| 337 | /* size might be wrong, try a smaller one */ |
| 338 | sz /= 2; |
| 339 | #if BYTE_ORDER1234 == BIG_ENDIAN4321 |
| 340 | val <<= 8*sz; |
| 341 | #endif |
| 342 | continue; |
| 343 | } |
| 344 | addReplyErrorFormat(c,"%s", strerror(ret)); |
| 345 | return; |
| 346 | } else { |
| 347 | #if BYTE_ORDER1234 == BIG_ENDIAN4321 |
| 348 | old >>= 64 - 8*sz; |
| 349 | #endif |
| 350 | addReplyLongLong(c, old); |
| 351 | return; |
| 352 | } |
| 353 | } |
| 354 | addReplyErrorFormat(c,"%s", strerror(EINVAL22)); |
| 355 | } |
| 356 | |
| 357 | void mallctl_string(client *c, robj **argv, int argc) { |
| 358 | int rret, wret; |
| 359 | char *old; |
| 360 | size_t sz = sizeof(old); |
| 361 | /* for strings, it seems we need to first get the old value, before overriding it. */ |
| 362 | if ((rret=je_mallctl(argv[0]->ptr, &old, &sz, NULL((void*)0), 0))) { |
| 363 | /* return error unless this option is write only. */ |
| 364 | if (!(rret == EPERM1 && argc > 1)) { |
| 365 | addReplyErrorFormat(c,"%s", strerror(rret)); |
| 366 | return; |
| 367 | } |
| 368 | } |
| 369 | if(argc > 1) { |
| 370 | char *val = argv[1]->ptr; |
| 371 | char **valref = &val; |
| 372 | if ((!strcmp(val,"VOID"))) |
| 373 | valref = NULL((void*)0), sz = 0; |
| 374 | wret = je_mallctl(argv[0]->ptr, NULL((void*)0), 0, valref, sz); |
| 375 | } |
| 376 | if (!rret) |
| 377 | addReplyBulkCString(c, old); |
| 378 | else if (wret) |
| 379 | addReplyErrorFormat(c,"%s", strerror(wret)); |
| 380 | else |
| 381 | addReply(c, shared.ok); |
| 382 | } |
| 383 | #endif |
| 384 | |
| 385 | void debugCommand(client *c) { |
| 386 | if (c->argc == 2 && !strcasecmp(c->argv[1]->ptr,"help")) { |
| 387 | const char *help[] = { |
| 388 | "AOF-FLUSH-SLEEP <microsec>", |
| 389 | " Server will sleep before flushing the AOF, this is used for testing.", |
| 390 | "ASSERT", |
| 391 | " Crash by assertion failed.", |
| 392 | "CHANGE-REPL-ID" |
| 393 | " Change the replication IDs of the instance.", |
| 394 | " Dangerous: should be used only for testing the replication subsystem.", |
| 395 | "CONFIG-REWRITE-FORCE-ALL", |
| 396 | " Like CONFIG REWRITE but writes all configuration options, including", |
| 397 | " keywords not listed in original configuration file or default values.", |
| 398 | "CRASH-AND-RECOVER <milliseconds>", |
| 399 | " Hard crash and restart after a <milliseconds> delay.", |
| 400 | "DIGEST", |
| 401 | " Output a hex signature representing the current DB content.", |
| 402 | "DIGEST-VALUE <key> [<key> ...]", |
| 403 | " Output a hex signature of the values of all the specified keys.", |
| 404 | "ERROR <string>", |
| 405 | " Return a Redis protocol error with <string> as message. Useful for clients", |
| 406 | " unit tests to simulate Redis errors.", |
| 407 | "LOG <message>", |
| 408 | " Write <message> to the server log.", |
| 409 | "HTSTATS <dbid>", |
| 410 | " Return hash table statistics of the specified Redis database.", |
| 411 | "HTSTATS-KEY <key>", |
| 412 | " Like HTSTATS but for the hash table stored at <key>'s value.", |
| 413 | "LOADAOF", |
| 414 | " Flush the AOF buffers on disk and reload the AOF in memory.", |
| 415 | "LUA-ALWAYS-REPLICATE-COMMANDS <0|1>", |
| 416 | " Setting it to 1 makes Lua replication defaulting to replicating single", |
| 417 | " commands, without the script having to enable effects replication.", |
| 418 | #ifdef USE_JEMALLOC1 |
| 419 | "MALLCTL <key> [<val>]", |
| 420 | " Get or set a malloc tuning integer.", |
| 421 | "MALLCTL-STR <key> [<val>]", |
| 422 | " Get or set a malloc tuning string.", |
| 423 | #endif |
| 424 | "OBJECT <key>", |
| 425 | " Show low level info about `key` and associated value.", |
| 426 | "OOM", |
| 427 | " Crash the server simulating an out-of-memory error.", |
| 428 | "PANIC", |
| 429 | " Crash the server simulating a panic.", |
| 430 | "POPULATE <count> [<prefix>] [<size>]", |
| 431 | " Create <count> string keys named key:<num>. If <prefix> is specified then", |
| 432 | " it is used instead of the 'key' prefix.", |
| 433 | "DEBUG PROTOCOL <type>", |
| 434 | " Reply with a test value of the specified type. <type> can be: string,", |
| 435 | " integer, double, bignum, null, array, set, map, attrib, push, verbatim,", |
| 436 | " true, false.", |
| 437 | "RELOAD [option ...]", |
| 438 | " Save the RDB on disk and reload it back to memory. Valid <option> values:", |
| 439 | " * MERGE: conflicting keys will be loaded from RDB.", |
| 440 | " * NOFLUSH: the existing database will not be removed before load, but", |
| 441 | " conflicting keys will generate an exception and kill the server." |
| 442 | " * NOSAVE: the database will be loaded from an existing RDB file.", |
| 443 | " Examples:", |
| 444 | " * DEBUG RELOAD: verify that the server is able to persist, flsuh and reload", |
| 445 | " the database.", |
| 446 | " * DEBUG RELOAD NOSAVE: replace the current database with the contents of an", |
| 447 | " existing RDB file.", |
| 448 | " * DEBUG RELOAD NOSAVE NOFLUSH MERGE: add the contents of an existing RDB", |
| 449 | " file to the database.", |
| 450 | "RESTART", |
| 451 | " Graceful restart: save config, db, restart.", |
| 452 | "SDSLEN <key>", |
| 453 | " Show low level SDS string info representing `key` and value.", |
| 454 | "SEGFAULT", |
| 455 | " Crash the server with sigsegv.", |
| 456 | "SET-ACTIVE-EXPIRE <0|1>", |
| 457 | " Setting it to 0 disables expiring keys in background when they are not", |
| 458 | " accessed (otherwise the Redis behavior). Setting it to 1 reenables back the", |
| 459 | " default.", |
| 460 | "SET-SKIP-CHECKSUM-VALIDATION <0|1>", |
| 461 | " Enables or disables checksum checks for RDB files and RESTORE's payload.", |
| 462 | "SLEEP <seconds>", |
| 463 | " Stop the server for <seconds>. Decimals allowed.", |
| 464 | "STRINGMATCH-TEST", |
| 465 | " Run a fuzz tester against the stringmatchlen() function.", |
| 466 | "STRUCTSIZE", |
| 467 | " Return the size of different Redis core C structures.", |
| 468 | "ZIPLIST <key>", |
| 469 | " Show low level info about the ziplist encoding of <key>.", |
| 470 | NULL((void*)0) |
| 471 | }; |
| 472 | addReplyHelp(c, help); |
| 473 | } else if (!strcasecmp(c->argv[1]->ptr,"segfault")) { |
| 474 | *((char*)-1) = 'x'; |
| 475 | } else if (!strcasecmp(c->argv[1]->ptr,"panic")) { |
| 476 | serverPanic("DEBUG PANIC called at Unix time %ld", time(NULL))_serverPanic("debug.c",476,"DEBUG PANIC called at Unix time %ld" , time(((void*)0))),__builtin_unreachable(); |
| 477 | } else if (!strcasecmp(c->argv[1]->ptr,"restart") || |
| 478 | !strcasecmp(c->argv[1]->ptr,"crash-and-recover")) |
| 479 | { |
| 480 | long long delay = 0; |
| 481 | if (c->argc >= 3) { |
| 482 | if (getLongLongFromObjectOrReply(c, c->argv[2], &delay, NULL((void*)0)) |
| 483 | != C_OK0) return; |
| 484 | if (delay < 0) delay = 0; |
| 485 | } |
| 486 | int flags = !strcasecmp(c->argv[1]->ptr,"restart") ? |
| 487 | (RESTART_SERVER_GRACEFULLY(1<<0)|RESTART_SERVER_CONFIG_REWRITE(1<<1)) : |
| 488 | RESTART_SERVER_NONE0; |
| 489 | restartServer(flags,delay); |
| 490 | addReplyError(c,"failed to restart the server. Check server logs."); |
| 491 | } else if (!strcasecmp(c->argv[1]->ptr,"oom")) { |
| 492 | void *ptr = zmalloc(ULONG_MAX(9223372036854775807L *2UL+1UL)); /* Should trigger an out of memory. */ |
| 493 | zfree(ptr); |
| 494 | addReply(c,shared.ok); |
| 495 | } else if (!strcasecmp(c->argv[1]->ptr,"assert")) { |
| 496 | serverAssertWithInfo(c,c->argv[0],1 == 2)((1 == 2)?(void)0 : (_serverAssertWithInfo(c,c->argv[0],"1 == 2" ,"debug.c",496),__builtin_unreachable())); |
| 497 | } else if (!strcasecmp(c->argv[1]->ptr,"log") && c->argc == 3) { |
| 498 | serverLog(LL_WARNING3, "DEBUG LOG: %s", (char*)c->argv[2]->ptr); |
| 499 | addReply(c,shared.ok); |
| 500 | } else if (!strcasecmp(c->argv[1]->ptr,"leak") && c->argc == 3) { |
| 501 | sdsdup(c->argv[2]->ptr); |
| 502 | addReply(c,shared.ok); |
| 503 | } else if (!strcasecmp(c->argv[1]->ptr,"reload")) { |
| 504 | int flush = 1, save = 1; |
| 505 | int flags = RDBFLAGS_NONE0; |
| 506 | |
| 507 | /* Parse the additional options that modify the RELOAD |
| 508 | * behavior. */ |
| 509 | for (int j = 2; j < c->argc; j++) { |
| 510 | char *opt = c->argv[j]->ptr; |
| 511 | if (!strcasecmp(opt,"MERGE")) { |
| 512 | flags |= RDBFLAGS_ALLOW_DUP(1<<2); |
| 513 | } else if (!strcasecmp(opt,"NOFLUSH")) { |
| 514 | flush = 0; |
| 515 | } else if (!strcasecmp(opt,"NOSAVE")) { |
| 516 | save = 0; |
| 517 | } else { |
| 518 | addReplyError(c,"DEBUG RELOAD only supports the " |
| 519 | "MERGE, NOFLUSH and NOSAVE options."); |
| 520 | return; |
| 521 | } |
| 522 | } |
| 523 | |
| 524 | /* The default behavior is to save the RDB file before loading |
| 525 | * it back. */ |
| 526 | if (save) { |
| 527 | rdbSaveInfo rsi, *rsiptr; |
| 528 | rsiptr = rdbPopulateSaveInfo(&rsi); |
| 529 | if (rdbSave(server.rdb_filename,rsiptr) != C_OK0) { |
| 530 | addReplyErrorObject(c,shared.err); |
| 531 | return; |
| 532 | } |
| 533 | } |
| 534 | |
| 535 | /* The default behavior is to remove the current dataset from |
| 536 | * memory before loading the RDB file, however when MERGE is |
| 537 | * used together with NOFLUSH, we are able to merge two datasets. */ |
| 538 | if (flush) emptyDb(-1,EMPTYDB_NO_FLAGS0,NULL((void*)0)); |
| 539 | |
| 540 | protectClient(c); |
| 541 | int ret = rdbLoad(server.rdb_filename,NULL((void*)0),flags); |
| 542 | unprotectClient(c); |
| 543 | if (ret != C_OK0) { |
| 544 | addReplyError(c,"Error trying to load the RDB dump"); |
| 545 | return; |
| 546 | } |
| 547 | serverLog(LL_WARNING3,"DB reloaded by DEBUG RELOAD"); |
| 548 | addReply(c,shared.ok); |
| 549 | } else if (!strcasecmp(c->argv[1]->ptr,"loadaof")) { |
| 550 | if (server.aof_state != AOF_OFF0) flushAppendOnlyFile(1); |
| 551 | emptyDb(-1,EMPTYDB_NO_FLAGS0,NULL((void*)0)); |
| 552 | protectClient(c); |
| 553 | int ret = loadAppendOnlyFile(server.aof_filename); |
| 554 | unprotectClient(c); |
| 555 | if (ret != C_OK0) { |
| 556 | addReplyErrorObject(c,shared.err); |
| 557 | return; |
| 558 | } |
| 559 | server.dirty = 0; /* Prevent AOF / replication */ |
| 560 | serverLog(LL_WARNING3,"Append Only File loaded by DEBUG LOADAOF"); |
| 561 | addReply(c,shared.ok); |
| 562 | } else if (!strcasecmp(c->argv[1]->ptr,"object") && c->argc == 3) { |
| 563 | dictEntry *de; |
| 564 | robj *val; |
| 565 | char *strenc; |
| 566 | |
| 567 | if ((de = dictFind(c->db->dict,c->argv[2]->ptr)) == NULL((void*)0)) { |
| 568 | addReplyErrorObject(c,shared.nokeyerr); |
| 569 | return; |
| 570 | } |
| 571 | val = dictGetVal(de)((de)->v.val); |
| 572 | strenc = strEncoding(val->encoding); |
| 573 | |
| 574 | char extra[138] = {0}; |
| 575 | if (val->encoding == OBJ_ENCODING_QUICKLIST9) { |
| 576 | char *nextra = extra; |
| 577 | int remaining = sizeof(extra); |
| 578 | quicklist *ql = val->ptr; |
| 579 | /* Add number of quicklist nodes */ |
| 580 | int used = snprintf(nextra, remaining, " ql_nodes:%lu", ql->len); |
| 581 | nextra += used; |
| 582 | remaining -= used; |
| 583 | /* Add average quicklist fill factor */ |
| 584 | double avg = (double)ql->count/ql->len; |
| 585 | used = snprintf(nextra, remaining, " ql_avg_node:%.2f", avg); |
| 586 | nextra += used; |
| 587 | remaining -= used; |
| 588 | /* Add quicklist fill level / max ziplist size */ |
| 589 | used = snprintf(nextra, remaining, " ql_ziplist_max:%d", ql->fill); |
| 590 | nextra += used; |
| 591 | remaining -= used; |
| 592 | /* Add isCompressed? */ |
| 593 | int compressed = ql->compress != 0; |
| 594 | used = snprintf(nextra, remaining, " ql_compressed:%d", compressed); |
| 595 | nextra += used; |
| 596 | remaining -= used; |
| 597 | /* Add total uncompressed size */ |
| 598 | unsigned long sz = 0; |
| 599 | for (quicklistNode *node = ql->head; node; node = node->next) { |
| 600 | sz += node->sz; |
| 601 | } |
| 602 | used = snprintf(nextra, remaining, " ql_uncompressed_size:%lu", sz); |
| 603 | nextra += used; |
| 604 | remaining -= used; |
Value stored to 'remaining' is never read | |
| 605 | } |
| 606 | |
| 607 | addReplyStatusFormat(c, |
| 608 | "Value at:%p refcount:%d " |
| 609 | "encoding:%s serializedlength:%zu " |
| 610 | "lru:%d lru_seconds_idle:%llu%s", |
| 611 | (void*)val, val->refcount, |
| 612 | strenc, rdbSavedObjectLen(val, c->argv[2]), |
| 613 | val->lru, estimateObjectIdleTime(val)/1000, extra); |
| 614 | } else if (!strcasecmp(c->argv[1]->ptr,"sdslen") && c->argc == 3) { |
| 615 | dictEntry *de; |
| 616 | robj *val; |
| 617 | sds key; |
| 618 | |
| 619 | if ((de = dictFind(c->db->dict,c->argv[2]->ptr)) == NULL((void*)0)) { |
| 620 | addReplyErrorObject(c,shared.nokeyerr); |
| 621 | return; |
| 622 | } |
| 623 | val = dictGetVal(de)((de)->v.val); |
| 624 | key = dictGetKey(de)((de)->key); |
| 625 | |
| 626 | if (val->type != OBJ_STRING0 || !sdsEncodedObject(val)(val->encoding == 0 || val->encoding == 8)) { |
| 627 | addReplyError(c,"Not an sds encoded string."); |
| 628 | } else { |
| 629 | addReplyStatusFormat(c, |
| 630 | "key_sds_len:%lld, key_sds_avail:%lld, key_zmalloc: %lld, " |
| 631 | "val_sds_len:%lld, val_sds_avail:%lld, val_zmalloc: %lld", |
| 632 | (long long) sdslen(key), |
| 633 | (long long) sdsavail(key), |
| 634 | (long long) sdsZmallocSize(key), |
| 635 | (long long) sdslen(val->ptr), |
| 636 | (long long) sdsavail(val->ptr), |
| 637 | (long long) getStringObjectSdsUsedMemory(val)); |
| 638 | } |
| 639 | } else if (!strcasecmp(c->argv[1]->ptr,"ziplist") && c->argc == 3) { |
| 640 | robj *o; |
| 641 | |
| 642 | if ((o = objectCommandLookupOrReply(c,c->argv[2],shared.nokeyerr)) |
| 643 | == NULL((void*)0)) return; |
| 644 | |
| 645 | if (o->encoding != OBJ_ENCODING_ZIPLIST5) { |
| 646 | addReplyError(c,"Not a ziplist encoded object."); |
| 647 | } else { |
| 648 | ziplistRepr(o->ptr); |
| 649 | addReplyStatus(c,"Ziplist structure printed on stdout"); |
| 650 | } |
| 651 | } else if (!strcasecmp(c->argv[1]->ptr,"populate") && |
| 652 | c->argc >= 3 && c->argc <= 5) { |
| 653 | long keys, j; |
| 654 | robj *key, *val; |
| 655 | char buf[128]; |
| 656 | |
| 657 | if (getPositiveLongFromObjectOrReply(c, c->argv[2], &keys, NULL((void*)0)) != C_OK0) |
| 658 | return; |
| 659 | |
| 660 | dictExpand(c->db->dict,keys); |
| 661 | long valsize = 0; |
| 662 | if ( c->argc == 5 && getPositiveLongFromObjectOrReply(c, c->argv[4], &valsize, NULL((void*)0)) != C_OK0 ) |
| 663 | return; |
| 664 | |
| 665 | for (j = 0; j < keys; j++) { |
| 666 | snprintf(buf,sizeof(buf),"%s:%lu", |
| 667 | (c->argc == 3) ? "key" : (char*)c->argv[3]->ptr, j); |
| 668 | key = createStringObject(buf,strlen(buf)); |
| 669 | if (lookupKeyWrite(c->db,key) != NULL((void*)0)) { |
| 670 | decrRefCount(key); |
| 671 | continue; |
| 672 | } |
| 673 | snprintf(buf,sizeof(buf),"value:%lu",j); |
| 674 | if (valsize==0) |
| 675 | val = createStringObject(buf,strlen(buf)); |
| 676 | else { |
| 677 | int buflen = strlen(buf); |
| 678 | val = createStringObject(NULL((void*)0),valsize); |
| 679 | memcpy(val->ptr, buf, valsize<=buflen? valsize: buflen); |
| 680 | } |
| 681 | dbAdd(c->db,key,val); |
| 682 | signalModifiedKey(c,c->db,key); |
| 683 | decrRefCount(key); |
| 684 | } |
| 685 | addReply(c,shared.ok); |
| 686 | } else if (!strcasecmp(c->argv[1]->ptr,"digest") && c->argc == 2) { |
| 687 | /* DEBUG DIGEST (form without keys specified) */ |
| 688 | unsigned char digest[20]; |
| 689 | sds d = sdsempty(); |
| 690 | |
| 691 | computeDatasetDigest(digest); |
| 692 | for (int i = 0; i < 20; i++) d = sdscatprintf(d, "%02x",digest[i]); |
| 693 | addReplyStatus(c,d); |
| 694 | sdsfree(d); |
| 695 | } else if (!strcasecmp(c->argv[1]->ptr,"digest-value") && c->argc >= 2) { |
| 696 | /* DEBUG DIGEST-VALUE key key key ... key. */ |
| 697 | addReplyArrayLen(c,c->argc-2); |
| 698 | for (int j = 2; j < c->argc; j++) { |
| 699 | unsigned char digest[20]; |
| 700 | memset(digest,0,20); /* Start with a clean result */ |
| 701 | |
| 702 | /* We don't use lookupKey because a debug command should |
| 703 | * work on logically expired keys */ |
| 704 | dictEntry *de; |
| 705 | robj *o = ((de = dictFind(c->db->dict,c->argv[j]->ptr)) == NULL((void*)0)) ? NULL((void*)0) : dictGetVal(de)((de)->v.val); |
| 706 | if (o) xorObjectDigest(c->db,c->argv[j],digest,o); |
| 707 | |
| 708 | sds d = sdsempty(); |
| 709 | for (int i = 0; i < 20; i++) d = sdscatprintf(d, "%02x",digest[i]); |
| 710 | addReplyStatus(c,d); |
| 711 | sdsfree(d); |
| 712 | } |
| 713 | } else if (!strcasecmp(c->argv[1]->ptr,"protocol") && c->argc == 3) { |
| 714 | /* DEBUG PROTOCOL [string|integer|double|bignum|null|array|set|map| |
| 715 | * attrib|push|verbatim|true|false] */ |
| 716 | char *name = c->argv[2]->ptr; |
| 717 | if (!strcasecmp(name,"string")) { |
| 718 | addReplyBulkCString(c,"Hello World"); |
| 719 | } else if (!strcasecmp(name,"integer")) { |
| 720 | addReplyLongLong(c,12345); |
| 721 | } else if (!strcasecmp(name,"double")) { |
| 722 | addReplyDouble(c,3.14159265359); |
| 723 | } else if (!strcasecmp(name,"bignum")) { |
| 724 | addReplyProto(c,"(1234567999999999999999999999999999999\r\n",40); |
| 725 | } else if (!strcasecmp(name,"null")) { |
| 726 | addReplyNull(c); |
| 727 | } else if (!strcasecmp(name,"array")) { |
| 728 | addReplyArrayLen(c,3); |
| 729 | for (int j = 0; j < 3; j++) addReplyLongLong(c,j); |
| 730 | } else if (!strcasecmp(name,"set")) { |
| 731 | addReplySetLen(c,3); |
| 732 | for (int j = 0; j < 3; j++) addReplyLongLong(c,j); |
| 733 | } else if (!strcasecmp(name,"map")) { |
| 734 | addReplyMapLen(c,3); |
| 735 | for (int j = 0; j < 3; j++) { |
| 736 | addReplyLongLong(c,j); |
| 737 | addReplyBool(c, j == 1); |
| 738 | } |
| 739 | } else if (!strcasecmp(name,"attrib")) { |
| 740 | addReplyAttributeLen(c,1); |
| 741 | addReplyBulkCString(c,"key-popularity"); |
| 742 | addReplyArrayLen(c,2); |
| 743 | addReplyBulkCString(c,"key:123"); |
| 744 | addReplyLongLong(c,90); |
| 745 | /* Attributes are not real replies, so a well formed reply should |
| 746 | * also have a normal reply type after the attribute. */ |
| 747 | addReplyBulkCString(c,"Some real reply following the attribute"); |
| 748 | } else if (!strcasecmp(name,"push")) { |
| 749 | addReplyPushLen(c,2); |
| 750 | addReplyBulkCString(c,"server-cpu-usage"); |
| 751 | addReplyLongLong(c,42); |
| 752 | /* Push replies are not synchronous replies, so we emit also a |
| 753 | * normal reply in order for blocking clients just discarding the |
| 754 | * push reply, to actually consume the reply and continue. */ |
| 755 | addReplyBulkCString(c,"Some real reply following the push reply"); |
| 756 | } else if (!strcasecmp(name,"true")) { |
| 757 | addReplyBool(c,1); |
| 758 | } else if (!strcasecmp(name,"false")) { |
| 759 | addReplyBool(c,0); |
| 760 | } else if (!strcasecmp(name,"verbatim")) { |
| 761 | addReplyVerbatim(c,"This is a verbatim\nstring",25,"txt"); |
| 762 | } else { |
| 763 | addReplyError(c,"Wrong protocol type name. Please use one of the following: string|integer|double|bignum|null|array|set|map|attrib|push|verbatim|true|false"); |
| 764 | } |
| 765 | } else if (!strcasecmp(c->argv[1]->ptr,"sleep") && c->argc == 3) { |
| 766 | double dtime = strtod(c->argv[2]->ptr,NULL((void*)0)); |
| 767 | long long utime = dtime*1000000; |
| 768 | struct timespec tv; |
| 769 | |
| 770 | tv.tv_sec = utime / 1000000; |
| 771 | tv.tv_nsec = (utime % 1000000) * 1000; |
| 772 | nanosleep(&tv, NULL((void*)0)); |
| 773 | addReply(c,shared.ok); |
| 774 | } else if (!strcasecmp(c->argv[1]->ptr,"set-active-expire") && |
| 775 | c->argc == 3) |
| 776 | { |
| 777 | server.active_expire_enabled = atoi(c->argv[2]->ptr); |
| 778 | addReply(c,shared.ok); |
| 779 | } else if (!strcasecmp(c->argv[1]->ptr,"set-skip-checksum-validation") && |
| 780 | c->argc == 3) |
| 781 | { |
| 782 | server.skip_checksum_validation = atoi(c->argv[2]->ptr); |
| 783 | addReply(c,shared.ok); |
| 784 | } else if (!strcasecmp(c->argv[1]->ptr,"aof-flush-sleep") && |
| 785 | c->argc == 3) |
| 786 | { |
| 787 | server.aof_flush_sleep = atoi(c->argv[2]->ptr); |
| 788 | addReply(c,shared.ok); |
| 789 | } else if (!strcasecmp(c->argv[1]->ptr,"lua-always-replicate-commands") && |
| 790 | c->argc == 3) |
| 791 | { |
| 792 | server.lua_always_replicate_commands = atoi(c->argv[2]->ptr); |
| 793 | addReply(c,shared.ok); |
| 794 | } else if (!strcasecmp(c->argv[1]->ptr,"error") && c->argc == 3) { |
| 795 | sds errstr = sdsnewlen("-",1); |
| 796 | |
| 797 | errstr = sdscatsds(errstr,c->argv[2]->ptr); |
| 798 | errstr = sdsmapchars(errstr,"\n\r"," ",2); /* no newlines in errors. */ |
| 799 | errstr = sdscatlen(errstr,"\r\n",2); |
| 800 | addReplySds(c,errstr); |
| 801 | } else if (!strcasecmp(c->argv[1]->ptr,"structsize") && c->argc == 2) { |
| 802 | sds sizes = sdsempty(); |
| 803 | sizes = sdscatprintf(sizes,"bits:%d ",(sizeof(void*) == 8)?64:32); |
| 804 | sizes = sdscatprintf(sizes,"robj:%d ",(int)sizeof(robj)); |
| 805 | sizes = sdscatprintf(sizes,"dictentry:%d ",(int)sizeof(dictEntry)); |
| 806 | sizes = sdscatprintf(sizes,"sdshdr5:%d ",(int)sizeof(struct sdshdr5)); |
| 807 | sizes = sdscatprintf(sizes,"sdshdr8:%d ",(int)sizeof(struct sdshdr8)); |
| 808 | sizes = sdscatprintf(sizes,"sdshdr16:%d ",(int)sizeof(struct sdshdr16)); |
| 809 | sizes = sdscatprintf(sizes,"sdshdr32:%d ",(int)sizeof(struct sdshdr32)); |
| 810 | sizes = sdscatprintf(sizes,"sdshdr64:%d ",(int)sizeof(struct sdshdr64)); |
| 811 | addReplyBulkSds(c,sizes); |
| 812 | } else if (!strcasecmp(c->argv[1]->ptr,"htstats") && c->argc == 3) { |
| 813 | long dbid; |
| 814 | sds stats = sdsempty(); |
| 815 | char buf[4096]; |
| 816 | |
| 817 | if (getLongFromObjectOrReply(c, c->argv[2], &dbid, NULL((void*)0)) != C_OK0) { |
| 818 | sdsfree(stats); |
| 819 | return; |
| 820 | } |
| 821 | if (dbid < 0 || dbid >= server.dbnum) { |
| 822 | sdsfree(stats); |
| 823 | addReplyError(c,"Out of range database"); |
| 824 | return; |
| 825 | } |
| 826 | |
| 827 | stats = sdscatprintf(stats,"[Dictionary HT]\n"); |
| 828 | dictGetStats(buf,sizeof(buf),server.db[dbid].dict); |
| 829 | stats = sdscat(stats,buf); |
| 830 | |
| 831 | stats = sdscatprintf(stats,"[Expires HT]\n"); |
| 832 | dictGetStats(buf,sizeof(buf),server.db[dbid].expires); |
| 833 | stats = sdscat(stats,buf); |
| 834 | |
| 835 | addReplyVerbatim(c,stats,sdslen(stats),"txt"); |
| 836 | sdsfree(stats); |
| 837 | } else if (!strcasecmp(c->argv[1]->ptr,"htstats-key") && c->argc == 3) { |
| 838 | robj *o; |
| 839 | dict *ht = NULL((void*)0); |
| 840 | |
| 841 | if ((o = objectCommandLookupOrReply(c,c->argv[2],shared.nokeyerr)) |
| 842 | == NULL((void*)0)) return; |
| 843 | |
| 844 | /* Get the hash table reference from the object, if possible. */ |
| 845 | switch (o->encoding) { |
| 846 | case OBJ_ENCODING_SKIPLIST7: |
| 847 | { |
| 848 | zset *zs = o->ptr; |
| 849 | ht = zs->dict; |
| 850 | } |
| 851 | break; |
| 852 | case OBJ_ENCODING_HT2: |
| 853 | ht = o->ptr; |
| 854 | break; |
| 855 | } |
| 856 | |
| 857 | if (ht == NULL((void*)0)) { |
| 858 | addReplyError(c,"The value stored at the specified key is not " |
| 859 | "represented using an hash table"); |
| 860 | } else { |
| 861 | char buf[4096]; |
| 862 | dictGetStats(buf,sizeof(buf),ht); |
| 863 | addReplyVerbatim(c,buf,strlen(buf),"txt"); |
| 864 | } |
| 865 | } else if (!strcasecmp(c->argv[1]->ptr,"change-repl-id") && c->argc == 2) { |
| 866 | serverLog(LL_WARNING3,"Changing replication IDs after receiving DEBUG change-repl-id"); |
| 867 | changeReplicationId(); |
| 868 | clearReplicationId2(); |
| 869 | addReply(c,shared.ok); |
| 870 | } else if (!strcasecmp(c->argv[1]->ptr,"stringmatch-test") && c->argc == 2) |
| 871 | { |
| 872 | stringmatchlen_fuzz_test(); |
| 873 | addReplyStatus(c,"Apparently Redis did not crash: test passed"); |
| 874 | } else if (!strcasecmp(c->argv[1]->ptr,"config-rewrite-force-all") && c->argc == 2) |
| 875 | { |
| 876 | if (rewriteConfig(server.configfile, 1) == -1) |
| 877 | addReplyError(c, "CONFIG-REWRITE-FORCE-ALL failed"); |
| 878 | else |
| 879 | addReply(c, shared.ok); |
| 880 | #ifdef USE_JEMALLOC1 |
| 881 | } else if(!strcasecmp(c->argv[1]->ptr,"mallctl") && c->argc >= 3) { |
| 882 | mallctl_int(c, c->argv+2, c->argc-2); |
| 883 | return; |
| 884 | } else if(!strcasecmp(c->argv[1]->ptr,"mallctl-str") && c->argc >= 3) { |
| 885 | mallctl_string(c, c->argv+2, c->argc-2); |
| 886 | return; |
| 887 | #endif |
| 888 | } else { |
| 889 | addReplySubcommandSyntaxError(c); |
| 890 | return; |
| 891 | } |
| 892 | } |
| 893 | |
| 894 | /* =========================== Crash handling ============================== */ |
| 895 | |
| 896 | void _serverAssert(const char *estr, const char *file, int line) { |
| 897 | bugReportStart(); |
| 898 | serverLog(LL_WARNING3,"=== ASSERTION FAILED ==="); |
| 899 | serverLog(LL_WARNING3,"==> %s:%d '%s' is not true",file,line,estr); |
| 900 | |
| 901 | if (server.crashlog_enabled) { |
| 902 | #ifdef HAVE_BACKTRACE1 |
| 903 | logStackTrace(NULL((void*)0), 1); |
| 904 | #endif |
| 905 | printCrashReport(); |
| 906 | } |
| 907 | |
| 908 | // remove the signal handler so on abort() we will output the crash report. |
| 909 | removeSignalHandlers(); |
| 910 | bugReportEnd(0, 0); |
| 911 | } |
| 912 | |
| 913 | void _serverAssertPrintClientInfo(const client *c) { |
| 914 | int j; |
| 915 | char conninfo[CONN_INFO_LEN32]; |
| 916 | |
| 917 | bugReportStart(); |
| 918 | serverLog(LL_WARNING3,"=== ASSERTION FAILED CLIENT CONTEXT ==="); |
| 919 | serverLog(LL_WARNING3,"client->flags = %llu", (unsigned long long) c->flags); |
| 920 | serverLog(LL_WARNING3,"client->conn = %s", connGetInfo(c->conn, conninfo, sizeof(conninfo))); |
| 921 | serverLog(LL_WARNING3,"client->argc = %d", c->argc); |
| 922 | for (j=0; j < c->argc; j++) { |
| 923 | char buf[128]; |
| 924 | char *arg; |
| 925 | |
| 926 | if (c->argv[j]->type == OBJ_STRING0 && sdsEncodedObject(c->argv[j])(c->argv[j]->encoding == 0 || c->argv[j]->encoding == 8)) { |
| 927 | arg = (char*) c->argv[j]->ptr; |
| 928 | } else { |
| 929 | snprintf(buf,sizeof(buf),"Object type: %u, encoding: %u", |
| 930 | c->argv[j]->type, c->argv[j]->encoding); |
| 931 | arg = buf; |
| 932 | } |
| 933 | serverLog(LL_WARNING3,"client->argv[%d] = \"%s\" (refcount: %d)", |
| 934 | j, arg, c->argv[j]->refcount); |
| 935 | } |
| 936 | } |
| 937 | |
| 938 | void serverLogObjectDebugInfo(const robj *o) { |
| 939 | serverLog(LL_WARNING3,"Object type: %d", o->type); |
| 940 | serverLog(LL_WARNING3,"Object encoding: %d", o->encoding); |
| 941 | serverLog(LL_WARNING3,"Object refcount: %d", o->refcount); |
| 942 | #if UNSAFE_CRASH_REPORT |
| 943 | /* This code is now disabled. o->ptr may be unreliable to print. in some |
| 944 | * cases a ziplist could have already been freed by realloc, but not yet |
| 945 | * updated to o->ptr. in other cases the call to ziplistLen may need to |
| 946 | * iterate on all the items in the list (and possibly crash again). |
| 947 | * For some cases it may be ok to crash here again, but these could cause |
| 948 | * invalid memory access which will bother valgrind and also possibly cause |
| 949 | * random memory portion to be "leaked" into the logfile. */ |
| 950 | if (o->type == OBJ_STRING0 && sdsEncodedObject(o)(o->encoding == 0 || o->encoding == 8)) { |
| 951 | serverLog(LL_WARNING3,"Object raw string len: %zu", sdslen(o->ptr)); |
| 952 | if (sdslen(o->ptr) < 4096) { |
| 953 | sds repr = sdscatrepr(sdsempty(),o->ptr,sdslen(o->ptr)); |
| 954 | serverLog(LL_WARNING3,"Object raw string content: %s", repr); |
| 955 | sdsfree(repr); |
| 956 | } |
| 957 | } else if (o->type == OBJ_LIST1) { |
| 958 | serverLog(LL_WARNING3,"List length: %d", (int) listTypeLength(o)); |
| 959 | } else if (o->type == OBJ_SET2) { |
| 960 | serverLog(LL_WARNING3,"Set size: %d", (int) setTypeSize(o)); |
| 961 | } else if (o->type == OBJ_HASH4) { |
| 962 | serverLog(LL_WARNING3,"Hash size: %d", (int) hashTypeLength(o)); |
| 963 | } else if (o->type == OBJ_ZSET3) { |
| 964 | serverLog(LL_WARNING3,"Sorted set size: %d", (int) zsetLength(o)); |
| 965 | if (o->encoding == OBJ_ENCODING_SKIPLIST7) |
| 966 | serverLog(LL_WARNING3,"Skiplist level: %d", (int) ((const zset*)o->ptr)->zsl->level); |
| 967 | } else if (o->type == OBJ_STREAM6) { |
| 968 | serverLog(LL_WARNING3,"Stream size: %d", (int) streamLength(o)); |
| 969 | } |
| 970 | #endif |
| 971 | } |
| 972 | |
| 973 | void _serverAssertPrintObject(const robj *o) { |
| 974 | bugReportStart(); |
| 975 | serverLog(LL_WARNING3,"=== ASSERTION FAILED OBJECT CONTEXT ==="); |
| 976 | serverLogObjectDebugInfo(o); |
| 977 | } |
| 978 | |
| 979 | void _serverAssertWithInfo(const client *c, const robj *o, const char *estr, const char *file, int line) { |
| 980 | if (c) _serverAssertPrintClientInfo(c); |
| 981 | if (o) _serverAssertPrintObject(o); |
| 982 | _serverAssert(estr,file,line); |
| 983 | } |
| 984 | |
| 985 | void _serverPanic(const char *file, int line, const char *msg, ...) { |
| 986 | va_list ap; |
| 987 | va_start(ap,msg)__builtin_va_start(ap, msg); |
| 988 | char fmtmsg[256]; |
| 989 | vsnprintf(fmtmsg,sizeof(fmtmsg),msg,ap); |
| 990 | va_end(ap)__builtin_va_end(ap); |
| 991 | |
| 992 | bugReportStart(); |
| 993 | serverLog(LL_WARNING3,"------------------------------------------------"); |
| 994 | serverLog(LL_WARNING3,"!!! Software Failure. Press left mouse button to continue"); |
| 995 | serverLog(LL_WARNING3,"Guru Meditation: %s #%s:%d",fmtmsg,file,line); |
| 996 | |
| 997 | if (server.crashlog_enabled) { |
| 998 | #ifdef HAVE_BACKTRACE1 |
| 999 | logStackTrace(NULL((void*)0), 1); |
| 1000 | #endif |
| 1001 | printCrashReport(); |
| 1002 | } |
| 1003 | |
| 1004 | // remove the signal handler so on abort() we will output the crash report. |
| 1005 | removeSignalHandlers(); |
| 1006 | bugReportEnd(0, 0); |
| 1007 | } |
| 1008 | |
| 1009 | void bugReportStart(void) { |
| 1010 | pthread_mutex_lock(&bug_report_start_mutex); |
| 1011 | if (bug_report_start == 0) { |
| 1012 | serverLogRaw(LL_WARNING3|LL_RAW(1<<10), |
| 1013 | "\n\n=== REDIS BUG REPORT START: Cut & paste starting from here ===\n"); |
| 1014 | bug_report_start = 1; |
| 1015 | } |
| 1016 | pthread_mutex_unlock(&bug_report_start_mutex); |
| 1017 | } |
| 1018 | |
| 1019 | #ifdef HAVE_BACKTRACE1 |
| 1020 | static void *getMcontextEip(ucontext_t *uc) { |
| 1021 | #if defined(__APPLE__) && !defined(MAC_OS_X_VERSION_10_6) |
| 1022 | /* OSX < 10.6 */ |
| 1023 | #if defined(__x86_64__1) |
| 1024 | return (void*) uc->uc_mcontext->__ss.__rip; |
| 1025 | #elif defined(__i386__) |
| 1026 | return (void*) uc->uc_mcontext->__ss.__eip; |
| 1027 | #else |
| 1028 | return (void*) uc->uc_mcontext->__ss.__srr0; |
| 1029 | #endif |
| 1030 | #elif defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_6) |
| 1031 | /* OSX >= 10.6 */ |
| 1032 | #if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__) |
| 1033 | return (void*) uc->uc_mcontext->__ss.__rip; |
| 1034 | #elif defined(__i386__) |
| 1035 | return (void*) uc->uc_mcontext->__ss.__eip; |
| 1036 | #else |
| 1037 | /* OSX ARM64 */ |
| 1038 | return (void*) arm_thread_state64_get_pc(uc->uc_mcontext->__ss); |
| 1039 | #endif |
| 1040 | #elif defined(__linux__1) |
| 1041 | /* Linux */ |
| 1042 | #if defined(__i386__) || ((defined(__X86_64__) || defined(__x86_64__1)) && defined(__ILP32__)) |
| 1043 | return (void*) uc->uc_mcontext.gregs[14]; /* Linux 32 */ |
| 1044 | #elif defined(__X86_64__) || defined(__x86_64__1) |
| 1045 | return (void*) uc->uc_mcontext.gregs[16]; /* Linux 64 */ |
| 1046 | #elif defined(__ia64__) /* Linux IA64 */ |
| 1047 | return (void*) uc->uc_mcontext.sc_ip; |
| 1048 | #elif defined(__arm__) /* Linux ARM */ |
| 1049 | return (void*) uc->uc_mcontext.arm_pc; |
| 1050 | #elif defined(__aarch64__) /* Linux AArch64 */ |
| 1051 | return (void*) uc->uc_mcontext.pc; |
| 1052 | #endif |
| 1053 | #elif defined(__FreeBSD__) |
| 1054 | /* FreeBSD */ |
| 1055 | #if defined(__i386__) |
| 1056 | return (void*) uc->uc_mcontext.mc_eip; |
| 1057 | #elif defined(__x86_64__1) |
| 1058 | return (void*) uc->uc_mcontext.mc_rip; |
| 1059 | #endif |
| 1060 | #elif defined(__OpenBSD__) |
| 1061 | /* OpenBSD */ |
| 1062 | #if defined(__i386__) |
| 1063 | return (void*) uc->sc_eip; |
| 1064 | #elif defined(__x86_64__1) |
| 1065 | return (void*) uc->sc_rip; |
| 1066 | #endif |
| 1067 | #elif defined(__NetBSD__) |
| 1068 | #if defined(__i386__) |
| 1069 | return (void*) uc->uc_mcontext.__gregs[_REG_EIP]; |
| 1070 | #elif defined(__x86_64__1) |
| 1071 | return (void*) uc->uc_mcontext.__gregs[_REG_RIP]; |
| 1072 | #endif |
| 1073 | #elif defined(__DragonFly__) |
| 1074 | return (void*) uc->uc_mcontext.mc_rip; |
| 1075 | #else |
| 1076 | return NULL((void*)0); |
| 1077 | #endif |
| 1078 | } |
| 1079 | |
| 1080 | void logStackContent(void **sp) { |
| 1081 | int i; |
| 1082 | for (i = 15; i >= 0; i--) { |
| 1083 | unsigned long addr = (unsigned long) sp+i; |
| 1084 | unsigned long val = (unsigned long) sp[i]; |
| 1085 | |
| 1086 | if (sizeof(long) == 4) |
| 1087 | serverLog(LL_WARNING3, "(%08lx) -> %08lx", addr, val); |
| 1088 | else |
| 1089 | serverLog(LL_WARNING3, "(%016lx) -> %016lx", addr, val); |
| 1090 | } |
| 1091 | } |
| 1092 | |
| 1093 | /* Log dump of processor registers */ |
| 1094 | void logRegisters(ucontext_t *uc) { |
| 1095 | serverLog(LL_WARNING3|LL_RAW(1<<10), "\n------ REGISTERS ------\n"); |
| 1096 | |
| 1097 | /* OSX */ |
| 1098 | #if defined(__APPLE__) && defined(MAC_OS_X_VERSION_10_6) |
| 1099 | /* OSX AMD64 */ |
| 1100 | #if defined(_STRUCT_X86_THREAD_STATE64) && !defined(__i386__) |
| 1101 | serverLog(LL_WARNING3, |
| 1102 | "\n" |
| 1103 | "RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n" |
| 1104 | "RDI:%016lx RSI:%016lx\nRBP:%016lx RSP:%016lx\n" |
| 1105 | "R8 :%016lx R9 :%016lx\nR10:%016lx R11:%016lx\n" |
| 1106 | "R12:%016lx R13:%016lx\nR14:%016lx R15:%016lx\n" |
| 1107 | "RIP:%016lx EFL:%016lx\nCS :%016lx FS:%016lx GS:%016lx", |
| 1108 | (unsigned long) uc->uc_mcontext->__ss.__rax, |
| 1109 | (unsigned long) uc->uc_mcontext->__ss.__rbx, |
| 1110 | (unsigned long) uc->uc_mcontext->__ss.__rcx, |
| 1111 | (unsigned long) uc->uc_mcontext->__ss.__rdx, |
| 1112 | (unsigned long) uc->uc_mcontext->__ss.__rdi, |
| 1113 | (unsigned long) uc->uc_mcontext->__ss.__rsi, |
| 1114 | (unsigned long) uc->uc_mcontext->__ss.__rbp, |
| 1115 | (unsigned long) uc->uc_mcontext->__ss.__rsp, |
| 1116 | (unsigned long) uc->uc_mcontext->__ss.__r8, |
| 1117 | (unsigned long) uc->uc_mcontext->__ss.__r9, |
| 1118 | (unsigned long) uc->uc_mcontext->__ss.__r10, |
| 1119 | (unsigned long) uc->uc_mcontext->__ss.__r11, |
| 1120 | (unsigned long) uc->uc_mcontext->__ss.__r12, |
| 1121 | (unsigned long) uc->uc_mcontext->__ss.__r13, |
| 1122 | (unsigned long) uc->uc_mcontext->__ss.__r14, |
| 1123 | (unsigned long) uc->uc_mcontext->__ss.__r15, |
| 1124 | (unsigned long) uc->uc_mcontext->__ss.__rip, |
| 1125 | (unsigned long) uc->uc_mcontext->__ss.__rflags, |
| 1126 | (unsigned long) uc->uc_mcontext->__ss.__cs, |
| 1127 | (unsigned long) uc->uc_mcontext->__ss.__fs, |
| 1128 | (unsigned long) uc->uc_mcontext->__ss.__gs |
| 1129 | ); |
| 1130 | logStackContent((void**)uc->uc_mcontext->__ss.__rsp); |
| 1131 | #elif defined(__i386__) |
| 1132 | /* OSX x86 */ |
| 1133 | serverLog(LL_WARNING3, |
| 1134 | "\n" |
| 1135 | "EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n" |
| 1136 | "EDI:%08lx ESI:%08lx EBP:%08lx ESP:%08lx\n" |
| 1137 | "SS:%08lx EFL:%08lx EIP:%08lx CS :%08lx\n" |
| 1138 | "DS:%08lx ES:%08lx FS :%08lx GS :%08lx", |
| 1139 | (unsigned long) uc->uc_mcontext->__ss.__eax, |
| 1140 | (unsigned long) uc->uc_mcontext->__ss.__ebx, |
| 1141 | (unsigned long) uc->uc_mcontext->__ss.__ecx, |
| 1142 | (unsigned long) uc->uc_mcontext->__ss.__edx, |
| 1143 | (unsigned long) uc->uc_mcontext->__ss.__edi, |
| 1144 | (unsigned long) uc->uc_mcontext->__ss.__esi, |
| 1145 | (unsigned long) uc->uc_mcontext->__ss.__ebp, |
| 1146 | (unsigned long) uc->uc_mcontext->__ss.__esp, |
| 1147 | (unsigned long) uc->uc_mcontext->__ss.__ss, |
| 1148 | (unsigned long) uc->uc_mcontext->__ss.__eflags, |
| 1149 | (unsigned long) uc->uc_mcontext->__ss.__eip, |
| 1150 | (unsigned long) uc->uc_mcontext->__ss.__cs, |
| 1151 | (unsigned long) uc->uc_mcontext->__ss.__ds, |
| 1152 | (unsigned long) uc->uc_mcontext->__ss.__es, |
| 1153 | (unsigned long) uc->uc_mcontext->__ss.__fs, |
| 1154 | (unsigned long) uc->uc_mcontext->__ss.__gs |
| 1155 | ); |
| 1156 | logStackContent((void**)uc->uc_mcontext->__ss.__esp); |
| 1157 | #else |
| 1158 | /* OSX ARM64 */ |
| 1159 | serverLog(LL_WARNING3, |
| 1160 | "\n" |
| 1161 | "x0:%016lx x1:%016lx x2:%016lx x3:%016lx\n" |
| 1162 | "x4:%016lx x5:%016lx x6:%016lx x7:%016lx\n" |
| 1163 | "x8:%016lx x9:%016lx x10:%016lx x11:%016lx\n" |
| 1164 | "x12:%016lx x13:%016lx x14:%016lx x15:%016lx\n" |
| 1165 | "x16:%016lx x17:%016lx x18:%016lx x19:%016lx\n" |
| 1166 | "x20:%016lx x21:%016lx x22:%016lx x23:%016lx\n" |
| 1167 | "x24:%016lx x25:%016lx x26:%016lx x27:%016lx\n" |
| 1168 | "x28:%016lx fp:%016lx lr:%016lx\n" |
| 1169 | "sp:%016lx pc:%016lx cpsr:%08lx\n", |
| 1170 | (unsigned long) uc->uc_mcontext->__ss.__x[0], |
| 1171 | (unsigned long) uc->uc_mcontext->__ss.__x[1], |
| 1172 | (unsigned long) uc->uc_mcontext->__ss.__x[2], |
| 1173 | (unsigned long) uc->uc_mcontext->__ss.__x[3], |
| 1174 | (unsigned long) uc->uc_mcontext->__ss.__x[4], |
| 1175 | (unsigned long) uc->uc_mcontext->__ss.__x[5], |
| 1176 | (unsigned long) uc->uc_mcontext->__ss.__x[6], |
| 1177 | (unsigned long) uc->uc_mcontext->__ss.__x[7], |
| 1178 | (unsigned long) uc->uc_mcontext->__ss.__x[8], |
| 1179 | (unsigned long) uc->uc_mcontext->__ss.__x[9], |
| 1180 | (unsigned long) uc->uc_mcontext->__ss.__x[10], |
| 1181 | (unsigned long) uc->uc_mcontext->__ss.__x[11], |
| 1182 | (unsigned long) uc->uc_mcontext->__ss.__x[12], |
| 1183 | (unsigned long) uc->uc_mcontext->__ss.__x[13], |
| 1184 | (unsigned long) uc->uc_mcontext->__ss.__x[14], |
| 1185 | (unsigned long) uc->uc_mcontext->__ss.__x[15], |
| 1186 | (unsigned long) uc->uc_mcontext->__ss.__x[16], |
| 1187 | (unsigned long) uc->uc_mcontext->__ss.__x[17], |
| 1188 | (unsigned long) uc->uc_mcontext->__ss.__x[18], |
| 1189 | (unsigned long) uc->uc_mcontext->__ss.__x[19], |
| 1190 | (unsigned long) uc->uc_mcontext->__ss.__x[20], |
| 1191 | (unsigned long) uc->uc_mcontext->__ss.__x[21], |
| 1192 | (unsigned long) uc->uc_mcontext->__ss.__x[22], |
| 1193 | (unsigned long) uc->uc_mcontext->__ss.__x[23], |
| 1194 | (unsigned long) uc->uc_mcontext->__ss.__x[24], |
| 1195 | (unsigned long) uc->uc_mcontext->__ss.__x[25], |
| 1196 | (unsigned long) uc->uc_mcontext->__ss.__x[26], |
| 1197 | (unsigned long) uc->uc_mcontext->__ss.__x[27], |
| 1198 | (unsigned long) uc->uc_mcontext->__ss.__x[28], |
| 1199 | (unsigned long) arm_thread_state64_get_fp(uc->uc_mcontext->__ss), |
| 1200 | (unsigned long) arm_thread_state64_get_lr(uc->uc_mcontext->__ss), |
| 1201 | (unsigned long) arm_thread_state64_get_sp(uc->uc_mcontext->__ss), |
| 1202 | (unsigned long) arm_thread_state64_get_pc(uc->uc_mcontext->__ss), |
| 1203 | (unsigned long) uc->uc_mcontext->__ss.__cpsr |
| 1204 | ); |
| 1205 | logStackContent((void**) arm_thread_state64_get_sp(uc->uc_mcontext->__ss)); |
| 1206 | #endif |
| 1207 | /* Linux */ |
| 1208 | #elif defined(__linux__1) |
| 1209 | /* Linux x86 */ |
| 1210 | #if defined(__i386__) || ((defined(__X86_64__) || defined(__x86_64__1)) && defined(__ILP32__)) |
| 1211 | serverLog(LL_WARNING3, |
| 1212 | "\n" |
| 1213 | "EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n" |
| 1214 | "EDI:%08lx ESI:%08lx EBP:%08lx ESP:%08lx\n" |
| 1215 | "SS :%08lx EFL:%08lx EIP:%08lx CS:%08lx\n" |
| 1216 | "DS :%08lx ES :%08lx FS :%08lx GS:%08lx", |
| 1217 | (unsigned long) uc->uc_mcontext.gregs[11], |
| 1218 | (unsigned long) uc->uc_mcontext.gregs[8], |
| 1219 | (unsigned long) uc->uc_mcontext.gregs[10], |
| 1220 | (unsigned long) uc->uc_mcontext.gregs[9], |
| 1221 | (unsigned long) uc->uc_mcontext.gregs[4], |
| 1222 | (unsigned long) uc->uc_mcontext.gregs[5], |
| 1223 | (unsigned long) uc->uc_mcontext.gregs[6], |
| 1224 | (unsigned long) uc->uc_mcontext.gregs[7], |
| 1225 | (unsigned long) uc->uc_mcontext.gregs[18], |
| 1226 | (unsigned long) uc->uc_mcontext.gregs[17], |
| 1227 | (unsigned long) uc->uc_mcontext.gregs[14], |
| 1228 | (unsigned long) uc->uc_mcontext.gregs[15], |
| 1229 | (unsigned long) uc->uc_mcontext.gregs[3], |
| 1230 | (unsigned long) uc->uc_mcontext.gregs[2], |
| 1231 | (unsigned long) uc->uc_mcontext.gregs[1], |
| 1232 | (unsigned long) uc->uc_mcontext.gregs[0] |
| 1233 | ); |
| 1234 | logStackContent((void**)uc->uc_mcontext.gregs[7]); |
| 1235 | #elif defined(__X86_64__) || defined(__x86_64__1) |
| 1236 | /* Linux AMD64 */ |
| 1237 | serverLog(LL_WARNING3, |
| 1238 | "\n" |
| 1239 | "RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n" |
| 1240 | "RDI:%016lx RSI:%016lx\nRBP:%016lx RSP:%016lx\n" |
| 1241 | "R8 :%016lx R9 :%016lx\nR10:%016lx R11:%016lx\n" |
| 1242 | "R12:%016lx R13:%016lx\nR14:%016lx R15:%016lx\n" |
| 1243 | "RIP:%016lx EFL:%016lx\nCSGSFS:%016lx", |
| 1244 | (unsigned long) uc->uc_mcontext.gregs[13], |
| 1245 | (unsigned long) uc->uc_mcontext.gregs[11], |
| 1246 | (unsigned long) uc->uc_mcontext.gregs[14], |
| 1247 | (unsigned long) uc->uc_mcontext.gregs[12], |
| 1248 | (unsigned long) uc->uc_mcontext.gregs[8], |
| 1249 | (unsigned long) uc->uc_mcontext.gregs[9], |
| 1250 | (unsigned long) uc->uc_mcontext.gregs[10], |
| 1251 | (unsigned long) uc->uc_mcontext.gregs[15], |
| 1252 | (unsigned long) uc->uc_mcontext.gregs[0], |
| 1253 | (unsigned long) uc->uc_mcontext.gregs[1], |
| 1254 | (unsigned long) uc->uc_mcontext.gregs[2], |
| 1255 | (unsigned long) uc->uc_mcontext.gregs[3], |
| 1256 | (unsigned long) uc->uc_mcontext.gregs[4], |
| 1257 | (unsigned long) uc->uc_mcontext.gregs[5], |
| 1258 | (unsigned long) uc->uc_mcontext.gregs[6], |
| 1259 | (unsigned long) uc->uc_mcontext.gregs[7], |
| 1260 | (unsigned long) uc->uc_mcontext.gregs[16], |
| 1261 | (unsigned long) uc->uc_mcontext.gregs[17], |
| 1262 | (unsigned long) uc->uc_mcontext.gregs[18] |
| 1263 | ); |
| 1264 | logStackContent((void**)uc->uc_mcontext.gregs[15]); |
| 1265 | #elif defined(__aarch64__) /* Linux AArch64 */ |
| 1266 | serverLog(LL_WARNING3, |
| 1267 | "\n" |
| 1268 | "X18:%016lx X19:%016lx\nX20:%016lx X21:%016lx\n" |
| 1269 | "X22:%016lx X23:%016lx\nX24:%016lx X25:%016lx\n" |
| 1270 | "X26:%016lx X27:%016lx\nX28:%016lx X29:%016lx\n" |
| 1271 | "X30:%016lx\n" |
| 1272 | "pc:%016lx sp:%016lx\npstate:%016lx fault_address:%016lx\n", |
| 1273 | (unsigned long) uc->uc_mcontext.regs[18], |
| 1274 | (unsigned long) uc->uc_mcontext.regs[19], |
| 1275 | (unsigned long) uc->uc_mcontext.regs[20], |
| 1276 | (unsigned long) uc->uc_mcontext.regs[21], |
| 1277 | (unsigned long) uc->uc_mcontext.regs[22], |
| 1278 | (unsigned long) uc->uc_mcontext.regs[23], |
| 1279 | (unsigned long) uc->uc_mcontext.regs[24], |
| 1280 | (unsigned long) uc->uc_mcontext.regs[25], |
| 1281 | (unsigned long) uc->uc_mcontext.regs[26], |
| 1282 | (unsigned long) uc->uc_mcontext.regs[27], |
| 1283 | (unsigned long) uc->uc_mcontext.regs[28], |
| 1284 | (unsigned long) uc->uc_mcontext.regs[29], |
| 1285 | (unsigned long) uc->uc_mcontext.regs[30], |
| 1286 | (unsigned long) uc->uc_mcontext.pc, |
| 1287 | (unsigned long) uc->uc_mcontext.sp, |
| 1288 | (unsigned long) uc->uc_mcontext.pstate, |
| 1289 | (unsigned long) uc->uc_mcontext.fault_address |
| 1290 | ); |
| 1291 | logStackContent((void**)uc->uc_mcontext.sp); |
| 1292 | #elif defined(__arm__) /* Linux ARM */ |
| 1293 | serverLog(LL_WARNING3, |
| 1294 | "\n" |
| 1295 | "R10:%016lx R9 :%016lx\nR8 :%016lx R7 :%016lx\n" |
| 1296 | "R6 :%016lx R5 :%016lx\nR4 :%016lx R3 :%016lx\n" |
| 1297 | "R2 :%016lx R1 :%016lx\nR0 :%016lx EC :%016lx\n" |
| 1298 | "fp: %016lx ip:%016lx\n" |
| 1299 | "pc:%016lx sp:%016lx\ncpsr:%016lx fault_address:%016lx\n", |
| 1300 | (unsigned long) uc->uc_mcontext.arm_r10, |
| 1301 | (unsigned long) uc->uc_mcontext.arm_r9, |
| 1302 | (unsigned long) uc->uc_mcontext.arm_r8, |
| 1303 | (unsigned long) uc->uc_mcontext.arm_r7, |
| 1304 | (unsigned long) uc->uc_mcontext.arm_r6, |
| 1305 | (unsigned long) uc->uc_mcontext.arm_r5, |
| 1306 | (unsigned long) uc->uc_mcontext.arm_r4, |
| 1307 | (unsigned long) uc->uc_mcontext.arm_r3, |
| 1308 | (unsigned long) uc->uc_mcontext.arm_r2, |
| 1309 | (unsigned long) uc->uc_mcontext.arm_r1, |
| 1310 | (unsigned long) uc->uc_mcontext.arm_r0, |
| 1311 | (unsigned long) uc->uc_mcontext.error_code, |
| 1312 | (unsigned long) uc->uc_mcontext.arm_fp, |
| 1313 | (unsigned long) uc->uc_mcontext.arm_ip, |
| 1314 | (unsigned long) uc->uc_mcontext.arm_pc, |
| 1315 | (unsigned long) uc->uc_mcontext.arm_sp, |
| 1316 | (unsigned long) uc->uc_mcontext.arm_cpsr, |
| 1317 | (unsigned long) uc->uc_mcontext.fault_address |
| 1318 | ); |
| 1319 | logStackContent((void**)uc->uc_mcontext.arm_sp); |
| 1320 | #endif |
| 1321 | #elif defined(__FreeBSD__) |
| 1322 | #if defined(__x86_64__1) |
| 1323 | serverLog(LL_WARNING3, |
| 1324 | "\n" |
| 1325 | "RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n" |
| 1326 | "RDI:%016lx RSI:%016lx\nRBP:%016lx RSP:%016lx\n" |
| 1327 | "R8 :%016lx R9 :%016lx\nR10:%016lx R11:%016lx\n" |
| 1328 | "R12:%016lx R13:%016lx\nR14:%016lx R15:%016lx\n" |
| 1329 | "RIP:%016lx EFL:%016lx\nCSGSFS:%016lx", |
| 1330 | (unsigned long) uc->uc_mcontext.mc_rax, |
| 1331 | (unsigned long) uc->uc_mcontext.mc_rbx, |
| 1332 | (unsigned long) uc->uc_mcontext.mc_rcx, |
| 1333 | (unsigned long) uc->uc_mcontext.mc_rdx, |
| 1334 | (unsigned long) uc->uc_mcontext.mc_rdi, |
| 1335 | (unsigned long) uc->uc_mcontext.mc_rsi, |
| 1336 | (unsigned long) uc->uc_mcontext.mc_rbp, |
| 1337 | (unsigned long) uc->uc_mcontext.mc_rsp, |
| 1338 | (unsigned long) uc->uc_mcontext.mc_r8, |
| 1339 | (unsigned long) uc->uc_mcontext.mc_r9, |
| 1340 | (unsigned long) uc->uc_mcontext.mc_r10, |
| 1341 | (unsigned long) uc->uc_mcontext.mc_r11, |
| 1342 | (unsigned long) uc->uc_mcontext.mc_r12, |
| 1343 | (unsigned long) uc->uc_mcontext.mc_r13, |
| 1344 | (unsigned long) uc->uc_mcontext.mc_r14, |
| 1345 | (unsigned long) uc->uc_mcontext.mc_r15, |
| 1346 | (unsigned long) uc->uc_mcontext.mc_rip, |
| 1347 | (unsigned long) uc->uc_mcontext.mc_rflags, |
| 1348 | (unsigned long) uc->uc_mcontext.mc_cs |
| 1349 | ); |
| 1350 | logStackContent((void**)uc->uc_mcontext.mc_rsp); |
| 1351 | #elif defined(__i386__) |
| 1352 | serverLog(LL_WARNING3, |
| 1353 | "\n" |
| 1354 | "EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n" |
| 1355 | "EDI:%08lx ESI:%08lx EBP:%08lx ESP:%08lx\n" |
| 1356 | "SS :%08lx EFL:%08lx EIP:%08lx CS:%08lx\n" |
| 1357 | "DS :%08lx ES :%08lx FS :%08lx GS:%08lx", |
| 1358 | (unsigned long) uc->uc_mcontext.mc_eax, |
| 1359 | (unsigned long) uc->uc_mcontext.mc_ebx, |
| 1360 | (unsigned long) uc->uc_mcontext.mc_ebx, |
| 1361 | (unsigned long) uc->uc_mcontext.mc_edx, |
| 1362 | (unsigned long) uc->uc_mcontext.mc_edi, |
| 1363 | (unsigned long) uc->uc_mcontext.mc_esi, |
| 1364 | (unsigned long) uc->uc_mcontext.mc_ebp, |
| 1365 | (unsigned long) uc->uc_mcontext.mc_esp, |
| 1366 | (unsigned long) uc->uc_mcontext.mc_ss, |
| 1367 | (unsigned long) uc->uc_mcontext.mc_eflags, |
| 1368 | (unsigned long) uc->uc_mcontext.mc_eip, |
| 1369 | (unsigned long) uc->uc_mcontext.mc_cs, |
| 1370 | (unsigned long) uc->uc_mcontext.mc_es, |
| 1371 | (unsigned long) uc->uc_mcontext.mc_fs, |
| 1372 | (unsigned long) uc->uc_mcontext.mc_gs |
| 1373 | ); |
| 1374 | logStackContent((void**)uc->uc_mcontext.mc_esp); |
| 1375 | #endif |
| 1376 | #elif defined(__OpenBSD__) |
| 1377 | #if defined(__x86_64__1) |
| 1378 | serverLog(LL_WARNING3, |
| 1379 | "\n" |
| 1380 | "RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n" |
| 1381 | "RDI:%016lx RSI:%016lx\nRBP:%016lx RSP:%016lx\n" |
| 1382 | "R8 :%016lx R9 :%016lx\nR10:%016lx R11:%016lx\n" |
| 1383 | "R12:%016lx R13:%016lx\nR14:%016lx R15:%016lx\n" |
| 1384 | "RIP:%016lx EFL:%016lx\nCSGSFS:%016lx", |
| 1385 | (unsigned long) uc->sc_rax, |
| 1386 | (unsigned long) uc->sc_rbx, |
| 1387 | (unsigned long) uc->sc_rcx, |
| 1388 | (unsigned long) uc->sc_rdx, |
| 1389 | (unsigned long) uc->sc_rdi, |
| 1390 | (unsigned long) uc->sc_rsi, |
| 1391 | (unsigned long) uc->sc_rbp, |
| 1392 | (unsigned long) uc->sc_rsp, |
| 1393 | (unsigned long) uc->sc_r8, |
| 1394 | (unsigned long) uc->sc_r9, |
| 1395 | (unsigned long) uc->sc_r10, |
| 1396 | (unsigned long) uc->sc_r11, |
| 1397 | (unsigned long) uc->sc_r12, |
| 1398 | (unsigned long) uc->sc_r13, |
| 1399 | (unsigned long) uc->sc_r14, |
| 1400 | (unsigned long) uc->sc_r15, |
| 1401 | (unsigned long) uc->sc_rip, |
| 1402 | (unsigned long) uc->sc_rflags, |
| 1403 | (unsigned long) uc->sc_cs |
| 1404 | ); |
| 1405 | logStackContent((void**)uc->sc_rsp); |
| 1406 | #elif defined(__i386__) |
| 1407 | serverLog(LL_WARNING3, |
| 1408 | "\n" |
| 1409 | "EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n" |
| 1410 | "EDI:%08lx ESI:%08lx EBP:%08lx ESP:%08lx\n" |
| 1411 | "SS :%08lx EFL:%08lx EIP:%08lx CS:%08lx\n" |
| 1412 | "DS :%08lx ES :%08lx FS :%08lx GS:%08lx", |
| 1413 | (unsigned long) uc->sc_eax, |
| 1414 | (unsigned long) uc->sc_ebx, |
| 1415 | (unsigned long) uc->sc_ebx, |
| 1416 | (unsigned long) uc->sc_edx, |
| 1417 | (unsigned long) uc->sc_edi, |
| 1418 | (unsigned long) uc->sc_esi, |
| 1419 | (unsigned long) uc->sc_ebp, |
| 1420 | (unsigned long) uc->sc_esp, |
| 1421 | (unsigned long) uc->sc_ss, |
| 1422 | (unsigned long) uc->sc_eflags, |
| 1423 | (unsigned long) uc->sc_eip, |
| 1424 | (unsigned long) uc->sc_cs, |
| 1425 | (unsigned long) uc->sc_es, |
| 1426 | (unsigned long) uc->sc_fs, |
| 1427 | (unsigned long) uc->sc_gs |
| 1428 | ); |
| 1429 | logStackContent((void**)uc->sc_esp); |
| 1430 | #endif |
| 1431 | #elif defined(__NetBSD__) |
| 1432 | #if defined(__x86_64__1) |
| 1433 | serverLog(LL_WARNING3, |
| 1434 | "\n" |
| 1435 | "RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n" |
| 1436 | "RDI:%016lx RSI:%016lx\nRBP:%016lx RSP:%016lx\n" |
| 1437 | "R8 :%016lx R9 :%016lx\nR10:%016lx R11:%016lx\n" |
| 1438 | "R12:%016lx R13:%016lx\nR14:%016lx R15:%016lx\n" |
| 1439 | "RIP:%016lx EFL:%016lx\nCSGSFS:%016lx", |
| 1440 | (unsigned long) uc->uc_mcontext.__gregs[_REG_RAX], |
| 1441 | (unsigned long) uc->uc_mcontext.__gregs[_REG_RBX], |
| 1442 | (unsigned long) uc->uc_mcontext.__gregs[_REG_RCX], |
| 1443 | (unsigned long) uc->uc_mcontext.__gregs[_REG_RDX], |
| 1444 | (unsigned long) uc->uc_mcontext.__gregs[_REG_RDI], |
| 1445 | (unsigned long) uc->uc_mcontext.__gregs[_REG_RSI], |
| 1446 | (unsigned long) uc->uc_mcontext.__gregs[_REG_RBP], |
| 1447 | (unsigned long) uc->uc_mcontext.__gregs[_REG_RSP], |
| 1448 | (unsigned long) uc->uc_mcontext.__gregs[_REG_R8], |
| 1449 | (unsigned long) uc->uc_mcontext.__gregs[_REG_R9], |
| 1450 | (unsigned long) uc->uc_mcontext.__gregs[_REG_R10], |
| 1451 | (unsigned long) uc->uc_mcontext.__gregs[_REG_R11], |
| 1452 | (unsigned long) uc->uc_mcontext.__gregs[_REG_R12], |
| 1453 | (unsigned long) uc->uc_mcontext.__gregs[_REG_R13], |
| 1454 | (unsigned long) uc->uc_mcontext.__gregs[_REG_R14], |
| 1455 | (unsigned long) uc->uc_mcontext.__gregs[_REG_R15], |
| 1456 | (unsigned long) uc->uc_mcontext.__gregs[_REG_RIP], |
| 1457 | (unsigned long) uc->uc_mcontext.__gregs[_REG_RFLAGS], |
| 1458 | (unsigned long) uc->uc_mcontext.__gregs[_REG_CS] |
| 1459 | ); |
| 1460 | logStackContent((void**)uc->uc_mcontext.__gregs[_REG_RSP]); |
| 1461 | #elif defined(__i386__) |
| 1462 | serverLog(LL_WARNING3, |
| 1463 | "\n" |
| 1464 | "EAX:%08lx EBX:%08lx ECX:%08lx EDX:%08lx\n" |
| 1465 | "EDI:%08lx ESI:%08lx EBP:%08lx ESP:%08lx\n" |
| 1466 | "SS :%08lx EFL:%08lx EIP:%08lx CS:%08lx\n" |
| 1467 | "DS :%08lx ES :%08lx FS :%08lx GS:%08lx", |
| 1468 | (unsigned long) uc->uc_mcontext.__gregs[_REG_EAX], |
| 1469 | (unsigned long) uc->uc_mcontext.__gregs[_REG_EBX], |
| 1470 | (unsigned long) uc->uc_mcontext.__gregs[_REG_EDX], |
| 1471 | (unsigned long) uc->uc_mcontext.__gregs[_REG_EDI], |
| 1472 | (unsigned long) uc->uc_mcontext.__gregs[_REG_ESI], |
| 1473 | (unsigned long) uc->uc_mcontext.__gregs[_REG_EBP], |
| 1474 | (unsigned long) uc->uc_mcontext.__gregs[_REG_ESP], |
| 1475 | (unsigned long) uc->uc_mcontext.__gregs[_REG_SS], |
| 1476 | (unsigned long) uc->uc_mcontext.__gregs[_REG_EFLAGS], |
| 1477 | (unsigned long) uc->uc_mcontext.__gregs[_REG_EIP], |
| 1478 | (unsigned long) uc->uc_mcontext.__gregs[_REG_CS], |
| 1479 | (unsigned long) uc->uc_mcontext.__gregs[_REG_ES], |
| 1480 | (unsigned long) uc->uc_mcontext.__gregs[_REG_FS], |
| 1481 | (unsigned long) uc->uc_mcontext.__gregs[_REG_GS] |
| 1482 | ); |
| 1483 | #endif |
| 1484 | #elif defined(__DragonFly__) |
| 1485 | serverLog(LL_WARNING3, |
| 1486 | "\n" |
| 1487 | "RAX:%016lx RBX:%016lx\nRCX:%016lx RDX:%016lx\n" |
| 1488 | "RDI:%016lx RSI:%016lx\nRBP:%016lx RSP:%016lx\n" |
| 1489 | "R8 :%016lx R9 :%016lx\nR10:%016lx R11:%016lx\n" |
| 1490 | "R12:%016lx R13:%016lx\nR14:%016lx R15:%016lx\n" |
| 1491 | "RIP:%016lx EFL:%016lx\nCSGSFS:%016lx", |
| 1492 | (unsigned long) uc->uc_mcontext.mc_rax, |
| 1493 | (unsigned long) uc->uc_mcontext.mc_rbx, |
| 1494 | (unsigned long) uc->uc_mcontext.mc_rcx, |
| 1495 | (unsigned long) uc->uc_mcontext.mc_rdx, |
| 1496 | (unsigned long) uc->uc_mcontext.mc_rdi, |
| 1497 | (unsigned long) uc->uc_mcontext.mc_rsi, |
| 1498 | (unsigned long) uc->uc_mcontext.mc_rbp, |
| 1499 | (unsigned long) uc->uc_mcontext.mc_rsp, |
| 1500 | (unsigned long) uc->uc_mcontext.mc_r8, |
| 1501 | (unsigned long) uc->uc_mcontext.mc_r9, |
| 1502 | (unsigned long) uc->uc_mcontext.mc_r10, |
| 1503 | (unsigned long) uc->uc_mcontext.mc_r11, |
| 1504 | (unsigned long) uc->uc_mcontext.mc_r12, |
| 1505 | (unsigned long) uc->uc_mcontext.mc_r13, |
| 1506 | (unsigned long) uc->uc_mcontext.mc_r14, |
| 1507 | (unsigned long) uc->uc_mcontext.mc_r15, |
| 1508 | (unsigned long) uc->uc_mcontext.mc_rip, |
| 1509 | (unsigned long) uc->uc_mcontext.mc_rflags, |
| 1510 | (unsigned long) uc->uc_mcontext.mc_cs |
| 1511 | ); |
| 1512 | logStackContent((void**)uc->uc_mcontext.mc_rsp); |
| 1513 | #else |
| 1514 | serverLog(LL_WARNING3, |
| 1515 | " Dumping of registers not supported for this OS/arch"); |
| 1516 | #endif |
| 1517 | } |
| 1518 | |
| 1519 | #endif /* HAVE_BACKTRACE */ |
| 1520 | |
| 1521 | /* Return a file descriptor to write directly to the Redis log with the |
| 1522 | * write(2) syscall, that can be used in critical sections of the code |
| 1523 | * where the rest of Redis can't be trusted (for example during the memory |
| 1524 | * test) or when an API call requires a raw fd. |
| 1525 | * |
| 1526 | * Close it with closeDirectLogFiledes(). */ |
| 1527 | int openDirectLogFiledes(void) { |
| 1528 | int log_to_stdout = server.logfile[0] == '\0'; |
| 1529 | int fd = log_to_stdout ? |
| 1530 | STDOUT_FILENO1 : |
| 1531 | open(server.logfile, O_APPEND02000|O_CREAT0100|O_WRONLY01, 0644); |
| 1532 | return fd; |
| 1533 | } |
| 1534 | |
| 1535 | /* Used to close what closeDirectLogFiledes() returns. */ |
| 1536 | void closeDirectLogFiledes(int fd) { |
| 1537 | int log_to_stdout = server.logfile[0] == '\0'; |
| 1538 | if (!log_to_stdout) close(fd); |
| 1539 | } |
| 1540 | |
| 1541 | #ifdef HAVE_BACKTRACE1 |
| 1542 | |
| 1543 | /* Logs the stack trace using the backtrace() call. This function is designed |
| 1544 | * to be called from signal handlers safely. |
| 1545 | * The eip argument is optional (can take NULL). |
| 1546 | * The uplevel argument indicates how many of the calling functions to skip. |
| 1547 | */ |
| 1548 | void logStackTrace(void *eip, int uplevel) { |
| 1549 | void *trace[100]; |
| 1550 | int trace_size = 0, fd = openDirectLogFiledes(); |
| 1551 | char *msg; |
| 1552 | uplevel++; /* skip this function */ |
| 1553 | |
| 1554 | if (fd == -1) return; /* If we can't log there is anything to do. */ |
| 1555 | |
| 1556 | /* Get the stack trace first! */ |
| 1557 | trace_size = backtrace(trace, 100); |
| 1558 | |
| 1559 | msg = "\n------ STACK TRACE ------\n"; |
| 1560 | if (write(fd,msg,strlen(msg)) == -1) {/* Avoid warning. */}; |
| 1561 | |
| 1562 | if (eip) { |
| 1563 | /* Write EIP to the log file*/ |
| 1564 | msg = "EIP:\n"; |
| 1565 | if (write(fd,msg,strlen(msg)) == -1) {/* Avoid warning. */}; |
| 1566 | backtrace_symbols_fd(&eip, 1, fd); |
| 1567 | } |
| 1568 | |
| 1569 | /* Write symbols to log file */ |
| 1570 | msg = "\nBacktrace:\n"; |
| 1571 | if (write(fd,msg,strlen(msg)) == -1) {/* Avoid warning. */}; |
| 1572 | backtrace_symbols_fd(trace+uplevel, trace_size-uplevel, fd); |
| 1573 | |
| 1574 | /* Cleanup */ |
| 1575 | closeDirectLogFiledes(fd); |
| 1576 | } |
| 1577 | |
| 1578 | #endif /* HAVE_BACKTRACE */ |
| 1579 | |
| 1580 | /* Log global server info */ |
| 1581 | void logServerInfo(void) { |
| 1582 | sds infostring, clients; |
| 1583 | serverLogRaw(LL_WARNING3|LL_RAW(1<<10), "\n------ INFO OUTPUT ------\n"); |
| 1584 | infostring = genRedisInfoString("all"); |
| 1585 | serverLogRaw(LL_WARNING3|LL_RAW(1<<10), infostring); |
| 1586 | serverLogRaw(LL_WARNING3|LL_RAW(1<<10), "\n------ CLIENT LIST OUTPUT ------\n"); |
| 1587 | clients = getAllClientsInfoString(-1); |
| 1588 | serverLogRaw(LL_WARNING3|LL_RAW(1<<10), clients); |
| 1589 | sdsfree(infostring); |
| 1590 | sdsfree(clients); |
| 1591 | } |
| 1592 | |
| 1593 | /* Log modules info. Something we wanna do last since we fear it may crash. */ |
| 1594 | void logModulesInfo(void) { |
| 1595 | serverLogRaw(LL_WARNING3|LL_RAW(1<<10), "\n------ MODULES INFO OUTPUT ------\n"); |
| 1596 | sds infostring = modulesCollectInfo(sdsempty(), NULL((void*)0), 1, 0); |
| 1597 | serverLogRaw(LL_WARNING3|LL_RAW(1<<10), infostring); |
| 1598 | sdsfree(infostring); |
| 1599 | } |
| 1600 | |
| 1601 | /* Log information about the "current" client, that is, the client that is |
| 1602 | * currently being served by Redis. May be NULL if Redis is not serving a |
| 1603 | * client right now. */ |
| 1604 | void logCurrentClient(void) { |
| 1605 | if (server.current_client == NULL((void*)0)) return; |
| 1606 | |
| 1607 | client *cc = server.current_client; |
| 1608 | sds client; |
| 1609 | int j; |
| 1610 | |
| 1611 | serverLogRaw(LL_WARNING3|LL_RAW(1<<10), "\n------ CURRENT CLIENT INFO ------\n"); |
| 1612 | client = catClientInfoString(sdsempty(),cc); |
| 1613 | serverLog(LL_WARNING3|LL_RAW(1<<10),"%s\n", client); |
| 1614 | sdsfree(client); |
| 1615 | for (j = 0; j < cc->argc; j++) { |
| 1616 | robj *decoded; |
| 1617 | |
| 1618 | decoded = getDecodedObject(cc->argv[j]); |
| 1619 | serverLog(LL_WARNING3|LL_RAW(1<<10),"argv[%d]: '%s'\n", j, |
| 1620 | (char*)decoded->ptr); |
| 1621 | decrRefCount(decoded); |
| 1622 | } |
| 1623 | /* Check if the first argument, usually a key, is found inside the |
| 1624 | * selected DB, and if so print info about the associated object. */ |
| 1625 | if (cc->argc > 1) { |
| 1626 | robj *val, *key; |
| 1627 | dictEntry *de; |
| 1628 | |
| 1629 | key = getDecodedObject(cc->argv[1]); |
| 1630 | de = dictFind(cc->db->dict, key->ptr); |
| 1631 | if (de) { |
| 1632 | val = dictGetVal(de)((de)->v.val); |
| 1633 | serverLog(LL_WARNING3,"key '%s' found in DB containing the following object:", (char*)key->ptr); |
| 1634 | serverLogObjectDebugInfo(val); |
| 1635 | } |
| 1636 | decrRefCount(key); |
| 1637 | } |
| 1638 | } |
| 1639 | |
| 1640 | #if defined(HAVE_PROC_MAPS1) |
| 1641 | |
| 1642 | #define MEMTEST_MAX_REGIONS128 128 |
| 1643 | |
| 1644 | /* A non destructive memory test executed during segfault. */ |
| 1645 | int memtest_test_linux_anonymous_maps(void) { |
| 1646 | FILE *fp; |
| 1647 | char line[1024]; |
| 1648 | char logbuf[1024]; |
| 1649 | size_t start_addr, end_addr, size; |
| 1650 | size_t start_vect[MEMTEST_MAX_REGIONS128]; |
| 1651 | size_t size_vect[MEMTEST_MAX_REGIONS128]; |
| 1652 | int regions = 0, j; |
| 1653 | |
| 1654 | int fd = openDirectLogFiledes(); |
| 1655 | if (!fd) return 0; |
| 1656 | |
| 1657 | fp = fopen("/proc/self/maps","r"); |
| 1658 | if (!fp) return 0; |
| 1659 | while(fgets(line,sizeof(line),fp) != NULL((void*)0)) { |
| 1660 | char *start, *end, *p = line; |
| 1661 | |
| 1662 | start = p; |
| 1663 | p = strchr(p,'-'); |
| 1664 | if (!p) continue; |
| 1665 | *p++ = '\0'; |
| 1666 | end = p; |
| 1667 | p = strchr(p,' '); |
| 1668 | if (!p) continue; |
| 1669 | *p++ = '\0'; |
| 1670 | if (strstr(p,"stack") || |
| 1671 | strstr(p,"vdso") || |
| 1672 | strstr(p,"vsyscall")) continue; |
| 1673 | if (!strstr(p,"00:00")) continue; |
| 1674 | if (!strstr(p,"rw")) continue; |
| 1675 | |
| 1676 | start_addr = strtoul(start,NULL((void*)0),16); |
| 1677 | end_addr = strtoul(end,NULL((void*)0),16); |
| 1678 | size = end_addr-start_addr; |
| 1679 | |
| 1680 | start_vect[regions] = start_addr; |
| 1681 | size_vect[regions] = size; |
| 1682 | snprintf(logbuf,sizeof(logbuf), |
| 1683 | "*** Preparing to test memory region %lx (%lu bytes)\n", |
| 1684 | (unsigned long) start_vect[regions], |
| 1685 | (unsigned long) size_vect[regions]); |
| 1686 | if (write(fd,logbuf,strlen(logbuf)) == -1) { /* Nothing to do. */ } |
| 1687 | regions++; |
| 1688 | } |
| 1689 | |
| 1690 | int errors = 0; |
| 1691 | for (j = 0; j < regions; j++) { |
| 1692 | if (write(fd,".",1) == -1) { /* Nothing to do. */ } |
| 1693 | errors += memtest_preserving_test((void*)start_vect[j],size_vect[j],1); |
| 1694 | if (write(fd, errors ? "E" : "O",1) == -1) { /* Nothing to do. */ } |
| 1695 | } |
| 1696 | if (write(fd,"\n",1) == -1) { /* Nothing to do. */ } |
| 1697 | |
| 1698 | /* NOTE: It is very important to close the file descriptor only now |
| 1699 | * because closing it before may result into unmapping of some memory |
| 1700 | * region that we are testing. */ |
| 1701 | fclose(fp); |
| 1702 | closeDirectLogFiledes(fd); |
| 1703 | return errors; |
| 1704 | } |
| 1705 | #endif /* HAVE_PROC_MAPS */ |
| 1706 | |
| 1707 | static void killMainThread(void) { |
| 1708 | int err; |
| 1709 | if (pthread_self() != server.main_thread_id && pthread_cancel(server.main_thread_id) == 0) { |
| 1710 | if ((err = pthread_join(server.main_thread_id,NULL((void*)0))) != 0) { |
| 1711 | serverLog(LL_WARNING3, "main thread can not be joined: %s", strerror(err)); |
| 1712 | } else { |
| 1713 | serverLog(LL_WARNING3, "main thread terminated"); |
| 1714 | } |
| 1715 | } |
| 1716 | } |
| 1717 | |
| 1718 | /* Kill the running threads (other than current) in an unclean way. This function |
| 1719 | * should be used only when it's critical to stop the threads for some reason. |
| 1720 | * Currently Redis does this only on crash (for instance on SIGSEGV) in order |
| 1721 | * to perform a fast memory check without other threads messing with memory. */ |
| 1722 | void killThreads(void) { |
| 1723 | killMainThread(); |
| 1724 | bioKillThreads(); |
| 1725 | killIOThreads(); |
| 1726 | } |
| 1727 | |
| 1728 | void doFastMemoryTest(void) { |
| 1729 | #if defined(HAVE_PROC_MAPS1) |
| 1730 | if (server.memcheck_enabled) { |
| 1731 | /* Test memory */ |
| 1732 | serverLogRaw(LL_WARNING3|LL_RAW(1<<10), "\n------ FAST MEMORY TEST ------\n"); |
| 1733 | killThreads(); |
| 1734 | if (memtest_test_linux_anonymous_maps()) { |
| 1735 | serverLogRaw(LL_WARNING3|LL_RAW(1<<10), |
| 1736 | "!!! MEMORY ERROR DETECTED! Check your memory ASAP !!!\n"); |
| 1737 | } else { |
| 1738 | serverLogRaw(LL_WARNING3|LL_RAW(1<<10), |
| 1739 | "Fast memory test PASSED, however your memory can still be broken. Please run a memory test for several hours if possible.\n"); |
| 1740 | } |
| 1741 | } |
| 1742 | #endif /* HAVE_PROC_MAPS */ |
| 1743 | } |
| 1744 | |
| 1745 | /* Scans the (assumed) x86 code starting at addr, for a max of `len` |
| 1746 | * bytes, searching for E8 (callq) opcodes, and dumping the symbols |
| 1747 | * and the call offset if they appear to be valid. */ |
| 1748 | void dumpX86Calls(void *addr, size_t len) { |
| 1749 | size_t j; |
| 1750 | unsigned char *p = addr; |
| 1751 | Dl_info info; |
| 1752 | /* Hash table to best-effort avoid printing the same symbol |
| 1753 | * multiple times. */ |
| 1754 | unsigned long ht[256] = {0}; |
| 1755 | |
| 1756 | if (len < 5) return; |
| 1757 | for (j = 0; j < len-4; j++) { |
| 1758 | if (p[j] != 0xE8) continue; /* Not an E8 CALL opcode. */ |
| 1759 | unsigned long target = (unsigned long)addr+j+5; |
| 1760 | target += *((int32_t*)(p+j+1)); |
| 1761 | if (dladdr((void*)target, &info) != 0 && info.dli_sname != NULL((void*)0)) { |
| 1762 | if (ht[target&0xff] != target) { |
| 1763 | printf("Function at 0x%lx is %s\n",target,info.dli_sname); |
| 1764 | ht[target&0xff] = target; |
| 1765 | } |
| 1766 | j += 4; /* Skip the 32 bit immediate. */ |
| 1767 | } |
| 1768 | } |
| 1769 | } |
| 1770 | |
| 1771 | void dumpCodeAroundEIP(void *eip) { |
| 1772 | Dl_info info; |
| 1773 | if (dladdr(eip, &info) != 0) { |
| 1774 | serverLog(LL_WARNING3|LL_RAW(1<<10), |
| 1775 | "\n------ DUMPING CODE AROUND EIP ------\n" |
| 1776 | "Symbol: %s (base: %p)\n" |
| 1777 | "Module: %s (base %p)\n" |
| 1778 | "$ xxd -r -p /tmp/dump.hex /tmp/dump.bin\n" |
| 1779 | "$ objdump --adjust-vma=%p -D -b binary -m i386:x86-64 /tmp/dump.bin\n" |
| 1780 | "------\n", |
| 1781 | info.dli_sname, info.dli_saddr, info.dli_fname, info.dli_fbase, |
| 1782 | info.dli_saddr); |
| 1783 | size_t len = (long)eip - (long)info.dli_saddr; |
| 1784 | unsigned long sz = sysconf(_SC_PAGESIZE_SC_PAGESIZE); |
| 1785 | if (len < 1<<13) { /* we don't have functions over 8k (verified) */ |
| 1786 | /* Find the address of the next page, which is our "safety" |
| 1787 | * limit when dumping. Then try to dump just 128 bytes more |
| 1788 | * than EIP if there is room, or stop sooner. */ |
| 1789 | void *base = (void *)info.dli_saddr; |
| 1790 | unsigned long next = ((unsigned long)eip + sz) & ~(sz-1); |
| 1791 | unsigned long end = (unsigned long)eip + 128; |
| 1792 | if (end > next) end = next; |
| 1793 | len = end - (unsigned long)base; |
| 1794 | serverLogHexDump(LL_WARNING3, "dump of function", |
| 1795 | base, len); |
| 1796 | dumpX86Calls(base, len); |
| 1797 | } |
| 1798 | } |
| 1799 | } |
| 1800 | |
| 1801 | void sigsegvHandler(int sig, siginfo_t *info, void *secret) { |
| 1802 | UNUSED(secret)((void) secret); |
| 1803 | UNUSED(info)((void) info); |
| 1804 | |
| 1805 | bugReportStart(); |
| 1806 | serverLog(LL_WARNING3, |
| 1807 | "Redis %s crashed by signal: %d, si_code: %d", REDIS_VERSION"6.2.1", sig, info->si_code); |
| 1808 | if (sig == SIGSEGV11 || sig == SIGBUS7) { |
| 1809 | serverLog(LL_WARNING3, |
| 1810 | "Accessing address: %p", (void*)info->si_addr_sifields._sigfault.si_addr); |
| 1811 | } |
| 1812 | if (info->si_pid_sifields._kill.si_pid != -1) { |
| 1813 | serverLog(LL_WARNING3, "Killed by PID: %ld, UID: %d", (long) info->si_pid_sifields._kill.si_pid, info->si_uid_sifields._kill.si_uid); |
| 1814 | } |
| 1815 | |
| 1816 | #ifdef HAVE_BACKTRACE1 |
| 1817 | ucontext_t *uc = (ucontext_t*) secret; |
| 1818 | void *eip = getMcontextEip(uc); |
| 1819 | if (eip != NULL((void*)0)) { |
| 1820 | serverLog(LL_WARNING3, |
| 1821 | "Crashed running the instruction at: %p", eip); |
| 1822 | } |
| 1823 | |
| 1824 | logStackTrace(getMcontextEip(uc), 1); |
| 1825 | |
| 1826 | logRegisters(uc); |
| 1827 | #endif |
| 1828 | |
| 1829 | printCrashReport(); |
| 1830 | |
| 1831 | #ifdef HAVE_BACKTRACE1 |
| 1832 | if (eip != NULL((void*)0)) |
| 1833 | dumpCodeAroundEIP(eip); |
| 1834 | #endif |
| 1835 | |
| 1836 | bugReportEnd(1, sig); |
| 1837 | } |
| 1838 | |
| 1839 | void printCrashReport(void) { |
| 1840 | /* Log INFO and CLIENT LIST */ |
| 1841 | logServerInfo(); |
| 1842 | |
| 1843 | /* Log the current client */ |
| 1844 | logCurrentClient(); |
| 1845 | |
| 1846 | /* Log modules info. Something we wanna do last since we fear it may crash. */ |
| 1847 | logModulesInfo(); |
| 1848 | |
| 1849 | /* Run memory test in case the crash was triggered by memory corruption. */ |
| 1850 | doFastMemoryTest(); |
| 1851 | } |
| 1852 | |
| 1853 | void bugReportEnd(int killViaSignal, int sig) { |
| 1854 | struct sigaction act; |
| 1855 | |
| 1856 | serverLogRaw(LL_WARNING3|LL_RAW(1<<10), |
| 1857 | "\n=== REDIS BUG REPORT END. Make sure to include from START to END. ===\n\n" |
| 1858 | " Please report the crash by opening an issue on github:\n\n" |
| 1859 | " http://github.com/redis/redis/issues\n\n" |
| 1860 | " Suspect RAM error? Use redis-server --test-memory to verify it.\n\n" |
| 1861 | ); |
| 1862 | |
| 1863 | /* free(messages); Don't call free() with possibly corrupted memory. */ |
| 1864 | if (server.daemonize && server.supervised == 0 && server.pidfile) unlink(server.pidfile); |
| 1865 | |
| 1866 | if (!killViaSignal) { |
| 1867 | if (server.use_exit_on_panic) |
| 1868 | exit(1); |
| 1869 | abort(); |
| 1870 | } |
| 1871 | |
| 1872 | /* Make sure we exit with the right signal at the end. So for instance |
| 1873 | * the core will be dumped if enabled. */ |
| 1874 | sigemptyset (&act.sa_mask); |
| 1875 | act.sa_flags = SA_NODEFER0x40000000 | SA_ONSTACK0x08000000 | SA_RESETHAND0x80000000; |
| 1876 | act.sa_handler__sigaction_handler.sa_handler = SIG_DFL((__sighandler_t) 0); |
| 1877 | sigaction (sig, &act, NULL((void*)0)); |
| 1878 | kill(getpid(),sig); |
| 1879 | } |
| 1880 | |
| 1881 | /* ==================== Logging functions for debugging ===================== */ |
| 1882 | |
| 1883 | void serverLogHexDump(int level, char *descr, void *value, size_t len) { |
| 1884 | char buf[65], *b; |
| 1885 | unsigned char *v = value; |
| 1886 | char charset[] = "0123456789abcdef"; |
| 1887 | |
| 1888 | serverLog(level,"%s (hexdump of %zu bytes):", descr, len); |
| 1889 | b = buf; |
| 1890 | while(len) { |
| 1891 | b[0] = charset[(*v)>>4]; |
| 1892 | b[1] = charset[(*v)&0xf]; |
| 1893 | b[2] = '\0'; |
| 1894 | b += 2; |
| 1895 | len--; |
| 1896 | v++; |
| 1897 | if (b-buf == 64 || len == 0) { |
| 1898 | serverLogRaw(level|LL_RAW(1<<10),buf); |
| 1899 | b = buf; |
| 1900 | } |
| 1901 | } |
| 1902 | serverLogRaw(level|LL_RAW(1<<10),"\n"); |
| 1903 | } |
| 1904 | |
| 1905 | /* =========================== Software Watchdog ============================ */ |
| 1906 | #include <sys/time.h> |
| 1907 | |
| 1908 | void watchdogSignalHandler(int sig, siginfo_t *info, void *secret) { |
| 1909 | #ifdef HAVE_BACKTRACE1 |
| 1910 | ucontext_t *uc = (ucontext_t*) secret; |
| 1911 | #else |
| 1912 | (void)secret; |
| 1913 | #endif |
| 1914 | UNUSED(info)((void) info); |
| 1915 | UNUSED(sig)((void) sig); |
| 1916 | |
| 1917 | serverLogFromHandler(LL_WARNING3,"\n--- WATCHDOG TIMER EXPIRED ---"); |
| 1918 | #ifdef HAVE_BACKTRACE1 |
| 1919 | logStackTrace(getMcontextEip(uc), 1); |
| 1920 | #else |
| 1921 | serverLogFromHandler(LL_WARNING3,"Sorry: no support for backtrace()."); |
| 1922 | #endif |
| 1923 | serverLogFromHandler(LL_WARNING3,"--------\n"); |
| 1924 | } |
| 1925 | |
| 1926 | /* Schedule a SIGALRM delivery after the specified period in milliseconds. |
| 1927 | * If a timer is already scheduled, this function will re-schedule it to the |
| 1928 | * specified time. If period is 0 the current timer is disabled. */ |
| 1929 | void watchdogScheduleSignal(int period) { |
| 1930 | struct itimerval it; |
| 1931 | |
| 1932 | /* Will stop the timer if period is 0. */ |
| 1933 | it.it_value.tv_sec = period/1000; |
| 1934 | it.it_value.tv_usec = (period%1000)*1000; |
| 1935 | /* Don't automatically restart. */ |
| 1936 | it.it_interval.tv_sec = 0; |
| 1937 | it.it_interval.tv_usec = 0; |
| 1938 | setitimer(ITIMER_REALITIMER_REAL, &it, NULL((void*)0)); |
| 1939 | } |
| 1940 | |
| 1941 | /* Enable the software watchdog with the specified period in milliseconds. */ |
| 1942 | void enableWatchdog(int period) { |
| 1943 | int min_period; |
| 1944 | |
| 1945 | if (server.watchdog_period == 0) { |
| 1946 | struct sigaction act; |
| 1947 | |
| 1948 | /* Watchdog was actually disabled, so we have to setup the signal |
| 1949 | * handler. */ |
| 1950 | sigemptyset(&act.sa_mask); |
| 1951 | act.sa_flags = SA_SIGINFO4; |
| 1952 | act.sa_sigaction__sigaction_handler.sa_sigaction = watchdogSignalHandler; |
| 1953 | sigaction(SIGALRM14, &act, NULL((void*)0)); |
| 1954 | } |
| 1955 | /* If the configured period is smaller than twice the timer period, it is |
| 1956 | * too short for the software watchdog to work reliably. Fix it now |
| 1957 | * if needed. */ |
| 1958 | min_period = (1000/server.hz)*2; |
| 1959 | if (period < min_period) period = min_period; |
| 1960 | watchdogScheduleSignal(period); /* Adjust the current timer. */ |
| 1961 | server.watchdog_period = period; |
| 1962 | } |
| 1963 | |
| 1964 | /* Disable the software watchdog. */ |
| 1965 | void disableWatchdog(void) { |
| 1966 | struct sigaction act; |
| 1967 | if (server.watchdog_period == 0) return; /* Already disabled. */ |
| 1968 | watchdogScheduleSignal(0); /* Stop the current timer. */ |
| 1969 | |
| 1970 | /* Set the signal handler to SIG_IGN, this will also remove pending |
| 1971 | * signals from the queue. */ |
| 1972 | sigemptyset(&act.sa_mask); |
| 1973 | act.sa_flags = 0; |
| 1974 | act.sa_handler__sigaction_handler.sa_handler = SIG_IGN((__sighandler_t) 1); |
| 1975 | sigaction(SIGALRM14, &act, NULL((void*)0)); |
| 1976 | server.watchdog_period = 0; |
| 1977 | } |
| 1978 | |
| 1979 | /* Positive input is sleep time in microseconds. Negative input is fractions |
| 1980 | * of microseconds, i.e. -10 means 100 nanoseconds. */ |
| 1981 | void debugDelay(int usec) { |
| 1982 | /* Since even the shortest sleep results in context switch and system call, |
| 1983 | * the way we achive short sleeps is by statistically sleeping less often. */ |
| 1984 | if (usec < 0) usec = (rand() % -usec) == 0 ? 1: 0; |
| 1985 | if (usec) usleep(usec); |
| 1986 | } |