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Code Issues Releases Wiki Activity

1968. [bug] Missing lock in resolver.c:validated(). [RT #15739]

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This commit is contained in:
Mark Andrews
2006-01-06 01:05:46 +00:00
parent 8549bc9b78
commit fde1a334ee
2 changed files with 15 additions and 7 deletions
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2
CHANGES
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@@ -1,3 +1,5 @@
1968. [bug] Missing lock in resolver.c:validated(). [RT #15739]
1967. [func] dig/nslookup/host: warn about missing "QR". [RT #15779]
1966. [bug] Don't set CD when we have fallen back to plain DNS.

20
lib/dns/resolver.c
View File

@@ -15,7 +15,7 @@
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: resolver.c,v 1.327 2006/01/06 00:38:21 marka Exp $ */
/* $Id: resolver.c,v 1.328 2006/01/06 01:05:46 marka Exp $ */
/*! \file */
@@ -3215,10 +3215,12 @@ validated(isc_task_t *task, isc_event_t *event) {
* so, destroy the fctx.
*/
if (SHUTTINGDOWN(fctx) && !sentresponse) {
maybe_destroy(fctx);
maybe_destroy(fctx); /* Locks bucket. */
goto cleanup_event;
}
LOCK(&fctx->res->buckets[fctx->bucketnum].lock);
/*
* If chaining, we need to make sure that the right result code is
* returned, and that the rdatasets are bound.
@@ -3277,10 +3279,11 @@ validated(isc_task_t *task, isc_event_t *event) {
result = vevent->result;
add_bad(fctx, &addrinfo->sockaddr, result);
isc_event_free(&event);
UNLOCK(&fctx->res->buckets[fctx->bucketnum].lock);
if (sentresponse)
fctx_done(fctx, result);
fctx_done(fctx, result); /* Locks bucket. */
else
fctx_try(fctx);
fctx_try(fctx); /* Locks bucket. */
return;
}
@@ -3359,9 +3362,9 @@ validated(isc_task_t *task, isc_event_t *event) {
* If we only deferred the destroy because we wanted to cache
* the data, destroy now.
*/
UNLOCK(&fctx->res->buckets[fctx->bucketnum].lock);
if (SHUTTINGDOWN(fctx))
maybe_destroy(fctx);
maybe_destroy(fctx); /* Locks bucket. */
goto cleanup_event;
}
@@ -3374,6 +3377,7 @@ validated(isc_task_t *task, isc_event_t *event) {
* more rdatasets that still need to
* be validated.
*/
UNLOCK(&fctx->res->buckets[fctx->bucketnum].lock);
goto cleanup_event;
}
@@ -3446,7 +3450,9 @@ validated(isc_task_t *task, isc_event_t *event) {
if (node != NULL)
dns_db_detachnode(fctx->cache, &node);
fctx_done(fctx, result);
UNLOCK(&fctx->res->buckets[fctx->bucketnum].lock);
fctx_done(fctx, result); /* Locks bucket. */
cleanup_event:
isc_event_free(&event);