[Spice-devel] [PATCH 1/2] Avoids to initialise OpenSSL threading twice

[Frediano Ziglio]

Signed-off-by: Frediano Ziglio <fziglio at redhat.com>
---
 server/reds.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/server/reds.c b/server/reds.c
index 6f88649..f74c8d3 100644
--- a/server/reds.c
+++ b/server/reds.c
@@ -2792,6 +2792,13 @@ static void openssl_thread_setup(void)
 {
     int i;
 
+    /* Somebody else already setup threading for OpenSSL,
+     * don't do it twice to avoid possible races.
+     */
+    if (CRYPTO_get_locking_callback() != NULL) {
+        return;
+    }
+
     lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
 
     for (i = 0; i < CRYPTO_num_locks(); i++) {
-- 
2.7.4