1 From f7fa1d461aa71bbc8a6c23fdcfc305f2e52ce5dd Mon Sep 17 00:00:00 2001
2 From: Christopher Faulet <cfaulet@haproxy.com>
3 Date: Mon, 19 Feb 2018 14:25:15 +0100
4 Subject: [PATCH] BUG/MEDIUM: ssl: Shutdown the connection for reading on
7 When SSL_read returns SSL_ERROR_SYSCALL and errno is unset or set to EAGAIN, the
8 connection must be shut down for reading. Else, the connection loops infinitly,
11 The bug was introduced in the commit 7e2e50500 ("BUG/MEDIUM: ssl: Don't always
12 treat SSL_ERROR_SYSCALL as unrecovarable."). This patch must be backported in
15 (cherry picked from commit 4ac77a98cda3d0f9b1d9de7bbbda2c91357f0767)
16 Signed-off-by: Willy Tarreau <w@1wt.eu>
18 src/ssl_sock.c | 14 ++++++++------
19 1 file changed, 8 insertions(+), 6 deletions(-)
21 diff --git a/src/ssl_sock.c b/src/ssl_sock.c
22 index f118724..a065bbb 100644
25 @@ -5437,10 +5437,9 @@ static int ssl_sock_to_buf(struct connection *conn, struct buffer *buf, int coun
27 } else if (ret == SSL_ERROR_ZERO_RETURN)
29 - /* For SSL_ERROR_SYSCALL, make sure the error is
30 - * unrecoverable before flagging the connection as
33 + /* For SSL_ERROR_SYSCALL, make sure to clear the error
34 + * stack before shutting down the connection for
36 if (ret == SSL_ERROR_SYSCALL && (!errno || errno == EAGAIN))
38 /* otherwise it's a real error */
39 @@ -5453,16 +5452,19 @@ static int ssl_sock_to_buf(struct connection *conn, struct buffer *buf, int coun
40 conn_cond_update_sock_polling(conn);
44 + /* Clear openssl global errors stack */
45 + ssl_sock_dump_errors(conn);
48 conn_sock_read0(conn);
52 conn->flags |= CO_FL_ERROR;
54 /* Clear openssl global errors stack */
55 ssl_sock_dump_errors(conn);