D29524.id86649.diff
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	Index: sys/netinet/tcp_hostcache.c
	===================================================================
	--- sys/netinet/tcp_hostcache.c
	+++ sys/netinet/tcp_hostcache.c
	@@ -633,6 +633,7 @@
	const int linesize = 128;
	struct sbuf sb;
	int i, error, len;
	+ bool do_drain = false;
	struct hc_metrics *hc_entry;
	char ip4buf[INET_ADDRSTRLEN];
	#ifdef INET6
	@@ -688,9 +689,13 @@
	hc_entry->rmx_hits,
	hc_entry->rmx_updates,
	hc_entry->rmx_expire);
	+ do_drain = true;
	}
	THC_UNLOCK(&V_tcp_hostcache.hashbase[i].hch_mtx);
	- sbuf_drain(&sb);
	+ if (do_drain) {
	+ sbuf_drain(&sb);
	+ do_drain = false;
	+ }
	}
	#undef msec
	error = sbuf_finish(&sb);