1bf663e32f
Daniel Stenberg
2026-04-03
Subject
dnscache: fix locking for negative caching
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lib/dnscache.c+4 -0
| @@ -601,6 +601,8 @@ CURLcode Curl_dnscache_add_negative(struct Curl_easy *data, | |
| if(!dnscache) | |
| return CURLE_FAILED_INIT; | |
| + | dnscache_lock(data, dnscache); |
| + | |
| /* put this new host in the cache */ | |
| dns = dnscache_add_addr(data, dnscache, dns_queries, NULL, | |
| host, strlen(host), port, FALSE); | |
| @@ -608,10 +610,12 @@ CURLcode Curl_dnscache_add_negative(struct Curl_easy *data, | |
| /* release the returned reference; the cache itself will keep the | |
| * entry alive: */ | |
| dns->refcount--; | |
| + | dnscache_unlock(data, dnscache); |
| CURL_TRC_DNS(data, "cache negative name resolve for %s:%d type=%s", | |
| host, port, Curl_resolv_query_str(dns_queries)); | |
| return CURLE_OK; | |
| } | |
| + | dnscache_unlock(data, dnscache); |
| return CURLE_OUT_OF_MEMORY; | |
| } | |