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Unlock the right bucket in the race condition avoidance case

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This commit is contained in:
Michael Graff
1999-12-10 23:22:13 +00:00
parent f882ab1ac2
commit a44bd6a6ed
1 changed files with 4 additions and 2 deletions
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6
lib/dns/adb.c
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@@ -2618,6 +2618,7 @@ dns_adb_cancelfind(dns_adbfind_t *find)
isc_task_t *task;
dns_adb_t *adb;
int bucket;
int unlock_bucket;
LOCK(&find->lock);
@@ -2636,14 +2637,15 @@ dns_adb_cancelfind(dns_adbfind_t *find)
/*
* We need to get the adbname's lock to unlink the find.
*/
violate_locking_hierarchy(&find->lock, &adb->namelocks[bucket]);
unlock_bucket = bucket;
violate_locking_hierarchy(&find->lock, &adb->namelocks[unlock_bucket]);
bucket = find->name_bucket;
if (bucket != DNS_ADB_INVALIDBUCKET) {
ISC_LIST_UNLINK(find->adbname->finds, find, plink);
find->adbname = NULL;
find->name_bucket = DNS_ADB_INVALIDBUCKET;
}
UNLOCK(&adb->namelocks[bucket]);
UNLOCK(&adb->namelocks[unlock_bucket]);
bucket = DNS_ADB_INVALIDBUCKET;
cleanup: