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lock access to fctx->nqueries

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(cherry picked from commit 5589748eca)
This commit is contained in:
Mark Andrews 2019-12-02 16:58:57 +11:00
parent bd6a5a9993
commit 0de313fff7
1 changed files with 6 additions and 3 deletions
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9
lib/dns/resolver.c
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@ -1136,9 +1136,8 @@ resquery_destroy(resquery_t **queryp) {
res = fctx->res;
bucket = fctx->bucketnum;
fctx->nqueries--;
LOCK(&res->buckets[bucket].lock);
fctx->nqueries--;
empty = fctx_decreference(query->fctx);
UNLOCK(&res->buckets[bucket].lock);
@ -1937,6 +1936,7 @@ fctx_query(fetchctx_t *fctx, dns_adbaddrinfo_t *addrinfo,
bool have_addr = false;
unsigned int srtt;
isc_dscp_t dscp = -1;
unsigned int bucketnum;
FCTXTRACE("query");
@ -2162,7 +2162,10 @@ fctx_query(fetchctx_t *fctx, dns_adbaddrinfo_t *addrinfo,
fctx->querysent++;
ISC_LIST_APPEND(fctx->queries, query, link);
query->fctx->nqueries++;
bucketnum = fctx->bucketnum;
LOCK(&res->buckets[bucketnum].lock);
fctx->nqueries++;
UNLOCK(&res->buckets[bucketnum].lock);
if (isc_sockaddr_pf(&addrinfo->sockaddr) == PF_INET)
inc_stats(res, dns_resstatscounter_queryv4);
else