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-rw-r--r--vio/viossl.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/vio/viossl.c b/vio/viossl.c
index 30946d3261c..8fdc8a3d68c 100644
--- a/vio/viossl.c
+++ b/vio/viossl.c
@@ -109,6 +109,21 @@ static my_bool ssl_should_retry(Vio *vio, int ret, enum enum_vio_io_event *event
SSL *ssl= vio->ssl_arg;
my_bool should_retry= TRUE;
+#if defined(ERR_LIB_X509) && defined(X509_R_CERT_ALREADY_IN_HASH_TABLE)
+ /*
+ Ignore error X509_R_CERT_ALREADY_IN_HASH_TABLE.
+ This is a workaround for an OpenSSL bug in an older (< 1.1.1)
+ OpenSSL version.
+ */
+ unsigned long err = ERR_peek_error();
+ if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
+ ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE)
+ {
+ ERR_clear_error();
+ return TRUE;
+ }
+#endif
+
/* Retrieve the result for the SSL I/O operation. */
ssl_error= SSL_get_error(ssl, ret);