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Merge branch '1419-threadsanitizer-data-race-rbtdb-c-7568-in-issecure' into 'master'

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Resolve "ThreadSanitizer: data race rbtdb.c:7568 in issecure"

Closes #1419

See merge request isc-projects/bind9!2656
This commit is contained in:
Mark Andrews 2019-12-03 01:14:27 +00:00
commit e4fcbba86e
1 changed files with 27 additions and 18 deletions
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45
lib/dns/rbtdb.c
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@ -1207,7 +1207,6 @@ detach(dns_db_t **dbp) {
*dbp = NULL;
if (isc_refcount_decrement(&rbtdb->references) == 1) {
(void)isc_refcount_current(&rbtdb->references);
maybe_free_rbtdb(rbtdb);
}
}
@ -1219,7 +1218,6 @@ currentversion(dns_db_t *db, dns_dbversion_t **versionp) {
REQUIRE(VALID_RBTDB(rbtdb));
/* XXXOND: Is the lock needed here? */
RBTDB_LOCK(&rbtdb->lock, isc_rwlocktype_read);
version = rbtdb->current_version;
isc_refcount_increment(&version->references);
@ -6823,8 +6821,11 @@ subtractrdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version,
* Update the zone's secure status. If version is non-NULL
* this is deferred until closeversion() is called.
*/
if (result == ISC_R_SUCCESS && version == NULL && !IS_CACHE(rbtdb))
if (result == ISC_R_SUCCESS && version == NULL && !IS_CACHE(rbtdb)) {
RBTDB_LOCK(&rbtdb->lock, isc_rwlocktype_write);
iszonesecure(db, rbtdb->current_version, rbtdb->origin_node);
RBTDB_UNLOCK(&rbtdb->lock, isc_rwlocktype_write);
}
return (result);
}
@ -6878,8 +6879,11 @@ deleterdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version,
* Update the zone's secure status. If version is non-NULL
* this is deferred until closeversion() is called.
*/
if (result == ISC_R_SUCCESS && version == NULL && !IS_CACHE(rbtdb))
if (result == ISC_R_SUCCESS && version == NULL && !IS_CACHE(rbtdb)) {
RBTDB_LOCK(&rbtdb->lock, isc_rwlocktype_write);
iszonesecure(db, rbtdb->current_version, rbtdb->origin_node);
RBTDB_UNLOCK(&rbtdb->lock, isc_rwlocktype_write);
}
return (result);
}
@ -7305,14 +7309,14 @@ endload(dns_db_t *db, dns_rdatacallbacks_t *callbacks) {
rbtdb->attributes &= ~RBTDB_ATTR_LOADING;
rbtdb->attributes |= RBTDB_ATTR_LOADED;
RBTDB_UNLOCK(&rbtdb->lock, isc_rwlocktype_write);
/*
* If there's a KEY rdataset at the zone origin containing a
* zone key, we consider the zone secure.
*/
if (! IS_CACHE(rbtdb) && rbtdb->origin_node != NULL)
if (! IS_CACHE(rbtdb) && rbtdb->origin_node != NULL) {
iszonesecure(db, rbtdb->current_version, rbtdb->origin_node);
}
RBTDB_UNLOCK(&rbtdb->lock, isc_rwlocktype_write);
callbacks->add = NULL;
callbacks->add_private = NULL;
@ -7578,9 +7582,9 @@ issecure(dns_db_t *db) {
REQUIRE(VALID_RBTDB(rbtdb));
RWLOCK(&rbtdb->tree_lock, isc_rwlocktype_read);
RBTDB_LOCK(&rbtdb->lock, isc_rwlocktype_read);
secure = (rbtdb->current_version->secure == dns_db_secure);
RWUNLOCK(&rbtdb->tree_lock, isc_rwlocktype_read);
RBTDB_UNLOCK(&rbtdb->lock, isc_rwlocktype_read);
return (secure);
}
@ -7594,9 +7598,9 @@ isdnssec(dns_db_t *db) {
REQUIRE(VALID_RBTDB(rbtdb));
RWLOCK(&rbtdb->tree_lock, isc_rwlocktype_read);
RBTDB_LOCK(&rbtdb->lock, isc_rwlocktype_read);
dnssec = (rbtdb->current_version->secure != dns_db_insecure);
RWUNLOCK(&rbtdb->tree_lock, isc_rwlocktype_read);
RBTDB_UNLOCK(&rbtdb->lock, isc_rwlocktype_read);
return (dnssec);
}
@ -7692,10 +7696,10 @@ getnsec3parameters(dns_db_t *db, dns_dbversion_t *version, dns_hash_t *hash,
REQUIRE(VALID_RBTDB(rbtdb));
INSIST(rbtversion == NULL || rbtversion->rbtdb == rbtdb);
RWLOCK(&rbtdb->tree_lock, isc_rwlocktype_read);
if (rbtversion == NULL)
RBTDB_LOCK(&rbtdb->lock, isc_rwlocktype_read);
if (rbtversion == NULL) {
rbtversion = rbtdb->current_version;
}
if (rbtversion->havensec3) {
if (hash != NULL)
@ -7713,7 +7717,7 @@ getnsec3parameters(dns_db_t *db, dns_dbversion_t *version, dns_hash_t *hash,
*flags = rbtversion->flags;
result = ISC_R_SUCCESS;
}
RWUNLOCK(&rbtdb->tree_lock, isc_rwlocktype_read);
RBTDB_UNLOCK(&rbtdb->lock, isc_rwlocktype_read);
return (result);
}
@ -7731,16 +7735,21 @@ getsize(dns_db_t *db, dns_dbversion_t *version, uint64_t *records,
REQUIRE(VALID_RBTDB(rbtdb));
INSIST(rbtversion == NULL || rbtversion->rbtdb == rbtdb);
if (rbtversion == NULL)
RBTDB_LOCK(&rbtdb->lock, isc_rwlocktype_read);
if (rbtversion == NULL) {
rbtversion = rbtdb->current_version;
}
RWLOCK(&rbtversion->rwlock, isc_rwlocktype_read);
if (records != NULL)
if (records != NULL) {
*records = rbtversion->records;
}
if (bytes != NULL)
if (bytes != NULL) {
*bytes = rbtversion->bytes;
}
RWUNLOCK(&rbtversion->rwlock, isc_rwlocktype_read);
RBTDB_UNLOCK(&rbtdb->lock, isc_rwlocktype_read);
return (result);
}