diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c index b0891998b24..5553c20fee8 100644 --- a/src/backend/access/transam/xlog.c +++ b/src/backend/access/transam/xlog.c @@ -703,7 +703,7 @@ static void InitControlFile(uint64 sysidentifier, uint32 data_checksum_version); static void WriteControlFile(void); static void ReadControlFile(void); static void UpdateControlFile(void); -static char *str_time(pg_time_t tnow); +static char *str_time(pg_time_t tnow, char *buf, size_t bufsize); static int get_sync_bit(int method); @@ -5371,11 +5371,9 @@ BootStrapXLOG(uint32 data_checksum_version) } static char * -str_time(pg_time_t tnow) +str_time(pg_time_t tnow, char *buf, size_t bufsize) { - char *buf = palloc(128); - - pg_strftime(buf, 128, + pg_strftime(buf, bufsize, "%Y-%m-%d %H:%M:%S %Z", pg_localtime(&tnow, log_timezone)); @@ -5618,6 +5616,7 @@ StartupXLOG(void) XLogRecPtr missingContrecPtr; TransactionId oldestActiveXID; bool promoted = false; + char timebuf[128]; /* * We should have an aux process resource owner to use, and we should not @@ -5646,25 +5645,29 @@ StartupXLOG(void) */ ereport(IsPostmasterEnvironment ? LOG : NOTICE, (errmsg("database system was shut down at %s", - str_time(ControlFile->time)))); + str_time(ControlFile->time, + timebuf, sizeof(timebuf))))); break; case DB_SHUTDOWNED_IN_RECOVERY: ereport(LOG, (errmsg("database system was shut down in recovery at %s", - str_time(ControlFile->time)))); + str_time(ControlFile->time, + timebuf, sizeof(timebuf))))); break; case DB_SHUTDOWNING: ereport(LOG, (errmsg("database system shutdown was interrupted; last known up at %s", - str_time(ControlFile->time)))); + str_time(ControlFile->time, + timebuf, sizeof(timebuf))))); break; case DB_IN_CRASH_RECOVERY: ereport(LOG, (errmsg("database system was interrupted while in recovery at %s", - str_time(ControlFile->time)), + str_time(ControlFile->time, + timebuf, sizeof(timebuf))), errhint("This probably means that some data is corrupted and" " you will have to use the last backup for recovery."))); break; @@ -5672,7 +5675,8 @@ StartupXLOG(void) case DB_IN_ARCHIVE_RECOVERY: ereport(LOG, (errmsg("database system was interrupted while in recovery at log time %s", - str_time(ControlFile->checkPointCopy.time)), + str_time(ControlFile->checkPointCopy.time, + timebuf, sizeof(timebuf))), errhint("If this has occurred more than once some data might be corrupted" " and you might need to choose an earlier recovery target."))); break; @@ -5680,7 +5684,8 @@ StartupXLOG(void) case DB_IN_PRODUCTION: ereport(LOG, (errmsg("database system was interrupted; last known up at %s", - str_time(ControlFile->time)))); + str_time(ControlFile->time, + timebuf, sizeof(timebuf))))); break; default: @@ -6325,6 +6330,12 @@ StartupXLOG(void) */ CompleteCommitTsInitialization(); + /* Clean up EndOfWalRecoveryInfo data to appease Valgrind leak checking */ + if (endOfRecoveryInfo->lastPage) + pfree(endOfRecoveryInfo->lastPage); + pfree(endOfRecoveryInfo->recoveryStopReason); + pfree(endOfRecoveryInfo); + /* * All done with end-of-recovery actions. * diff --git a/src/backend/access/transam/xlogrecovery.c b/src/backend/access/transam/xlogrecovery.c index e8f3ba00caa..f23ec8969c2 100644 --- a/src/backend/access/transam/xlogrecovery.c +++ b/src/backend/access/transam/xlogrecovery.c @@ -1626,6 +1626,7 @@ ShutdownWalRecovery(void) close(readFile); readFile = -1; } + pfree(xlogreader->private_data); XLogReaderFree(xlogreader); XLogPrefetcherFree(xlogprefetcher); diff --git a/src/backend/libpq/pqmq.c b/src/backend/libpq/pqmq.c index f1a08bc32ca..5f39949a367 100644 --- a/src/backend/libpq/pqmq.c +++ b/src/backend/libpq/pqmq.c @@ -23,7 +23,7 @@ #include "tcop/tcopprot.h" #include "utils/builtins.h" -static shm_mq_handle *pq_mq_handle; +static shm_mq_handle *pq_mq_handle = NULL; static bool pq_mq_busy = false; static pid_t pq_mq_parallel_leader_pid = 0; static ProcNumber pq_mq_parallel_leader_proc_number = INVALID_PROC_NUMBER; @@ -66,7 +66,11 @@ pq_redirect_to_shm_mq(dsm_segment *seg, shm_mq_handle *mqh) static void pq_cleanup_redirect_to_shm_mq(dsm_segment *seg, Datum arg) { - pq_mq_handle = NULL; + if (pq_mq_handle != NULL) + { + pfree(pq_mq_handle); + pq_mq_handle = NULL; + } whereToSendOutput = DestNone; } @@ -131,8 +135,11 @@ mq_putmessage(char msgtype, const char *s, size_t len) if (pq_mq_busy) { if (pq_mq_handle != NULL) + { shm_mq_detach(pq_mq_handle); - pq_mq_handle = NULL; + pfree(pq_mq_handle); + pq_mq_handle = NULL; + } return EOF; } @@ -152,8 +159,6 @@ mq_putmessage(char msgtype, const char *s, size_t len) iov[1].data = s; iov[1].len = len; - Assert(pq_mq_handle != NULL); - for (;;) { /* @@ -161,6 +166,7 @@ mq_putmessage(char msgtype, const char *s, size_t len) * that the shared memory value is updated before we send the parallel * message signal right after this. */ + Assert(pq_mq_handle != NULL); result = shm_mq_sendv(pq_mq_handle, iov, 2, true, true); if (pq_mq_parallel_leader_pid != 0) diff --git a/src/backend/replication/logical/launcher.c b/src/backend/replication/logical/launcher.c index 742d9ba68e9..37377f7eb63 100644 --- a/src/backend/replication/logical/launcher.c +++ b/src/backend/replication/logical/launcher.c @@ -790,6 +790,8 @@ logicalrep_worker_detach(void) } LWLockRelease(LogicalRepWorkerLock); + + list_free(workers); } /* Block concurrent access. */ diff --git a/src/backend/tcop/backend_startup.c b/src/backend/tcop/backend_startup.c index ad0af5edc1f..14d5fc0b196 100644 --- a/src/backend/tcop/backend_startup.c +++ b/src/backend/tcop/backend_startup.c @@ -492,7 +492,7 @@ static int ProcessStartupPacket(Port *port, bool ssl_done, bool gss_done) { int32 len; - char *buf; + char *buf = NULL; ProtocolVersion proto; MemoryContext oldcontext; @@ -516,7 +516,7 @@ ProcessStartupPacket(Port *port, bool ssl_done, bool gss_done) * scanners, which may be less benign, but it's not really our job to * notice those.) */ - return STATUS_ERROR; + goto fail; } if (pq_getbytes(((char *) &len) + 1, 3) == EOF) @@ -526,7 +526,7 @@ ProcessStartupPacket(Port *port, bool ssl_done, bool gss_done) ereport(COMMERROR, (errcode(ERRCODE_PROTOCOL_VIOLATION), errmsg("incomplete startup packet"))); - return STATUS_ERROR; + goto fail; } len = pg_ntoh32(len); @@ -538,7 +538,7 @@ ProcessStartupPacket(Port *port, bool ssl_done, bool gss_done) ereport(COMMERROR, (errcode(ERRCODE_PROTOCOL_VIOLATION), errmsg("invalid length of startup packet"))); - return STATUS_ERROR; + goto fail; } /* @@ -554,7 +554,7 @@ ProcessStartupPacket(Port *port, bool ssl_done, bool gss_done) ereport(COMMERROR, (errcode(ERRCODE_PROTOCOL_VIOLATION), errmsg("incomplete startup packet"))); - return STATUS_ERROR; + goto fail; } pq_endmsgread(); @@ -568,7 +568,7 @@ ProcessStartupPacket(Port *port, bool ssl_done, bool gss_done) { ProcessCancelRequestPacket(port, buf, len); /* Not really an error, but we don't want to proceed further */ - return STATUS_ERROR; + goto fail; } if (proto == NEGOTIATE_SSL_CODE && !ssl_done) @@ -607,14 +607,16 @@ ProcessStartupPacket(Port *port, bool ssl_done, bool gss_done) ereport(COMMERROR, (errcode_for_socket_access(), errmsg("failed to send SSL negotiation response: %m"))); - return STATUS_ERROR; /* close the connection */ + goto fail; /* close the connection */ } #ifdef USE_SSL if (SSLok == 'S' && secure_open_server(port) == -1) - return STATUS_ERROR; + goto fail; #endif + pfree(buf); + /* * At this point we should have no data already buffered. If we do, * it was received before we performed the SSL handshake, so it wasn't @@ -661,14 +663,16 @@ ProcessStartupPacket(Port *port, bool ssl_done, bool gss_done) ereport(COMMERROR, (errcode_for_socket_access(), errmsg("failed to send GSSAPI negotiation response: %m"))); - return STATUS_ERROR; /* close the connection */ + goto fail; /* close the connection */ } #ifdef ENABLE_GSS if (GSSok == 'G' && secure_open_gssapi(port) == -1) - return STATUS_ERROR; + goto fail; #endif + pfree(buf); + /* * At this point we should have no data already buffered. If we do, * it was received before we performed the GSS handshake, so it wasn't @@ -863,7 +867,16 @@ ProcessStartupPacket(Port *port, bool ssl_done, bool gss_done) */ MemoryContextSwitchTo(oldcontext); + pfree(buf); + return STATUS_OK; + +fail: + /* be tidy, just to avoid Valgrind complaints */ + if (buf) + pfree(buf); + + return STATUS_ERROR; } /* diff --git a/src/backend/utils/cache/evtcache.c b/src/backend/utils/cache/evtcache.c index ce596bf5638..b9d5a5998be 100644 --- a/src/backend/utils/cache/evtcache.c +++ b/src/backend/utils/cache/evtcache.c @@ -78,7 +78,6 @@ BuildEventTriggerCache(void) { HASHCTL ctl; HTAB *cache; - MemoryContext oldcontext; Relation rel; Relation irel; SysScanDesc scan; @@ -110,9 +109,6 @@ BuildEventTriggerCache(void) (Datum) 0); } - /* Switch to correct memory context. */ - oldcontext = MemoryContextSwitchTo(EventTriggerCacheContext); - /* Prevent the memory context from being nuked while we're rebuilding. */ EventTriggerCacheState = ETCS_REBUILD_STARTED; @@ -145,6 +141,7 @@ BuildEventTriggerCache(void) bool evttags_isnull; EventTriggerCacheEntry *entry; bool found; + MemoryContext oldcontext; /* Get next tuple. */ tup = systable_getnext_ordered(scan, ForwardScanDirection); @@ -171,6 +168,9 @@ BuildEventTriggerCache(void) else continue; + /* Switch to correct memory context. */ + oldcontext = MemoryContextSwitchTo(EventTriggerCacheContext); + /* Allocate new cache item. */ item = palloc0(sizeof(EventTriggerCacheItem)); item->fnoid = form->evtfoid; @@ -188,6 +188,9 @@ BuildEventTriggerCache(void) entry->triggerlist = lappend(entry->triggerlist, item); else entry->triggerlist = list_make1(item); + + /* Restore previous memory context. */ + MemoryContextSwitchTo(oldcontext); } /* Done with pg_event_trigger scan. */ @@ -195,9 +198,6 @@ BuildEventTriggerCache(void) index_close(irel, AccessShareLock); relation_close(rel, AccessShareLock); - /* Restore previous memory context. */ - MemoryContextSwitchTo(oldcontext); - /* Install new cache. */ EventTriggerCache = cache; @@ -240,6 +240,8 @@ DecodeTextArrayToBitmapset(Datum array) } pfree(elems); + if ((Pointer) arr != DatumGetPointer(array)) + pfree(arr); return bms; } diff --git a/src/backend/utils/cache/typcache.c b/src/backend/utils/cache/typcache.c index f9aec38a11f..6a347698edf 100644 --- a/src/backend/utils/cache/typcache.c +++ b/src/backend/utils/cache/typcache.c @@ -1171,9 +1171,6 @@ load_domaintype_info(TypeCacheEntry *typentry) elog(ERROR, "domain \"%s\" constraint \"%s\" has NULL conbin", NameStr(typTup->typname), NameStr(c->conname)); - /* Convert conbin to C string in caller context */ - constring = TextDatumGetCString(val); - /* Create the DomainConstraintCache object and context if needed */ if (dcc == NULL) { @@ -1189,9 +1186,8 @@ load_domaintype_info(TypeCacheEntry *typentry) dcc->dccRefCount = 0; } - /* Create node trees in DomainConstraintCache's context */ - oldcxt = MemoryContextSwitchTo(dcc->dccContext); - + /* Convert conbin to a node tree, still in caller's context */ + constring = TextDatumGetCString(val); check_expr = (Expr *) stringToNode(constring); /* @@ -1206,10 +1202,13 @@ load_domaintype_info(TypeCacheEntry *typentry) */ check_expr = expression_planner(check_expr); + /* Create only the minimally needed stuff in dccContext */ + oldcxt = MemoryContextSwitchTo(dcc->dccContext); + r = makeNode(DomainConstraintState); r->constrainttype = DOM_CONSTRAINT_CHECK; r->name = pstrdup(NameStr(c->conname)); - r->check_expr = check_expr; + r->check_expr = copyObject(check_expr); r->check_exprstate = NULL; MemoryContextSwitchTo(oldcxt); diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c index ce5449f2878..e404c345e6e 100644 --- a/src/backend/utils/misc/guc.c +++ b/src/backend/utils/misc/guc.c @@ -249,6 +249,7 @@ static void reapply_stacked_values(struct config_generic *variable, const char *curvalue, GucContext curscontext, GucSource cursource, Oid cursrole); +static void free_placeholder(struct config_string *pHolder); static bool validate_option_array_item(const char *name, const char *value, bool skipIfNoPermissions); static void write_auto_conf_file(int fd, const char *filename, ConfigVariable *head); @@ -5023,16 +5024,8 @@ define_custom_variable(struct config_generic *variable) set_config_sourcefile(name, pHolder->gen.sourcefile, pHolder->gen.sourceline); - /* - * Free up as much as we conveniently can of the placeholder structure. - * (This neglects any stack items, so it's possible for some memory to be - * leaked. Since this can only happen once per session per variable, it - * doesn't seem worth spending much code on.) - */ - set_string_field(pHolder, pHolder->variable, NULL); - set_string_field(pHolder, &pHolder->reset_val, NULL); - - guc_free(pHolder); + /* Now we can free the no-longer-referenced placeholder variable */ + free_placeholder(pHolder); } /* @@ -5131,6 +5124,25 @@ reapply_stacked_values(struct config_generic *variable, } } +/* + * Free up a no-longer-referenced placeholder GUC variable. + * + * This neglects any stack items, so it's possible for some memory to be + * leaked. Since this can only happen once per session per variable, it + * doesn't seem worth spending much code on. + */ +static void +free_placeholder(struct config_string *pHolder) +{ + /* Placeholders are always STRING type, so free their values */ + Assert(pHolder->gen.vartype == PGC_STRING); + set_string_field(pHolder, pHolder->variable, NULL); + set_string_field(pHolder, &pHolder->reset_val, NULL); + + guc_free(unconstify(char *, pHolder->gen.name)); + guc_free(pHolder); +} + /* * Functions for extensions to call to define their custom GUC variables. */ @@ -5291,9 +5303,7 @@ MarkGUCPrefixReserved(const char *className) /* * Check for existing placeholders. We must actually remove invalid - * placeholders, else future parallel worker startups will fail. (We - * don't bother trying to free associated memory, since this shouldn't - * happen often.) + * placeholders, else future parallel worker startups will fail. */ hash_seq_init(&status, guc_hashtab); while ((hentry = (GUCHashEntry *) hash_seq_search(&status)) != NULL) @@ -5317,6 +5327,8 @@ MarkGUCPrefixReserved(const char *className) NULL); /* Remove it from any lists it's in, too */ RemoveGUCFromLists(var); + /* And free it */ + free_placeholder((struct config_string *) var); } }