# HG changeset patch
# User Igor Sysoev <igor@sysoev.ru>
# Date 1219761256 0
# Node ID 70a2bcc7e3077f7915c9368e90c58b78b08fcb91
# Parent  8e5bf1bc87e2103a3c94d0498f86f25ba6123fc9
fix divide by zero if max_fails=0

diff --git a/src/http/ngx_http_upstream_round_robin.c b/src/http/ngx_http_upstream_round_robin.c
--- a/src/http/ngx_http_upstream_round_robin.c
+++ b/src/http/ngx_http_upstream_round_robin.c
@@ -645,7 +645,9 @@ ngx_http_upstream_free_round_robin_peer(
         peer->fails++;
         peer->accessed = now;
 
-        peer->current_weight -= peer->weight / peer->max_fails;
+        if (peer->max_fails) {
+            peer->current_weight -= peer->weight / peer->max_fails;
+        }
 
         ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0,
                        "free rr peer failed: %ui %i",