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104 lines
3.0 KiB
104 lines
3.0 KiB
From 9bcc01ae25985dd540080f43b160beab1f1a2bc6 Mon Sep 17 00:00:00 2001
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From: Willy Tarreau <w@1wt.eu>
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Date: Thu, 13 Nov 2014 13:48:58 +0100
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Subject: [PATCH 3/6] BUG/MEDIUM: ssl: force a full GC in case of memory
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shortage
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When memory becomes scarce and openssl refuses to allocate a new SSL
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session, it is worth freeing the pools and trying again instead of
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rejecting all incoming SSL connection. This can happen when some
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memory usage limits have been assigned to the haproxy process using
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-m or with ulimit -m/-v.
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This is mostly an enhancement of previous fix and is worth backporting
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to 1.5.
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(cherry picked from commit fba03cdc5ac6e3ca318b34915596cbc0a0dacc55)
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---
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src/ssl_sock.c | 30 ++++++++++++++++++++++++++++++
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1 file changed, 30 insertions(+)
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diff --git a/src/ssl_sock.c b/src/ssl_sock.c
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index 620609f..f50efe5 100644
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--- a/src/ssl_sock.c
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+++ b/src/ssl_sock.c
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@@ -2033,9 +2033,16 @@ static int ssl_sock_init(struct connection *conn)
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/* If it is in client mode initiate SSL session
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in connect state otherwise accept state */
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if (objt_server(conn->target)) {
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+ int may_retry = 1;
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+
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+ retry_connect:
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/* Alloc a new SSL session ctx */
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conn->xprt_ctx = SSL_new(objt_server(conn->target)->ssl_ctx.ctx);
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if (!conn->xprt_ctx) {
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+ if (may_retry--) {
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+ pool_gc2();
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+ goto retry_connect;
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+ }
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conn->err_code = CO_ER_SSL_NO_MEM;
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return -1;
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}
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@@ -2044,6 +2051,10 @@ static int ssl_sock_init(struct connection *conn)
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if (!SSL_set_fd(conn->xprt_ctx, conn->t.sock.fd)) {
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SSL_free(conn->xprt_ctx);
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conn->xprt_ctx = NULL;
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+ if (may_retry--) {
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+ pool_gc2();
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+ goto retry_connect;
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+ }
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conn->err_code = CO_ER_SSL_NO_MEM;
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return -1;
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}
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@@ -2052,6 +2063,10 @@ static int ssl_sock_init(struct connection *conn)
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if (!SSL_set_app_data(conn->xprt_ctx, conn)) {
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SSL_free(conn->xprt_ctx);
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conn->xprt_ctx = NULL;
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+ if (may_retry--) {
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+ pool_gc2();
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+ goto retry_connect;
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+ }
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conn->err_code = CO_ER_SSL_NO_MEM;
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return -1;
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}
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@@ -2072,9 +2087,16 @@ static int ssl_sock_init(struct connection *conn)
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return 0;
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}
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else if (objt_listener(conn->target)) {
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+ int may_retry = 1;
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+
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+ retry_accept:
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/* Alloc a new SSL session ctx */
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conn->xprt_ctx = SSL_new(objt_listener(conn->target)->bind_conf->default_ctx);
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if (!conn->xprt_ctx) {
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+ if (may_retry--) {
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+ pool_gc2();
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+ goto retry_accept;
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+ }
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conn->err_code = CO_ER_SSL_NO_MEM;
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return -1;
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}
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@@ -2083,6 +2105,10 @@ static int ssl_sock_init(struct connection *conn)
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if (!SSL_set_fd(conn->xprt_ctx, conn->t.sock.fd)) {
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SSL_free(conn->xprt_ctx);
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conn->xprt_ctx = NULL;
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+ if (may_retry--) {
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+ pool_gc2();
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+ goto retry_accept;
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+ }
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conn->err_code = CO_ER_SSL_NO_MEM;
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return -1;
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}
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@@ -2091,6 +2117,10 @@ static int ssl_sock_init(struct connection *conn)
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if (!SSL_set_app_data(conn->xprt_ctx, conn)) {
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SSL_free(conn->xprt_ctx);
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conn->xprt_ctx = NULL;
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+ if (may_retry--) {
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+ pool_gc2();
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+ goto retry_accept;
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+ }
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conn->err_code = CO_ER_SSL_NO_MEM;
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return -1;
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}
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--
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2.0.4
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