MUTEX: Assert on locking failure

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21919)

1 files changed, 6 insertions, 2 deletions

diff --git a/crypto/thread/arch/thread_posix.c b/crypto/thread/arch/thread_posix.c
index 0ab27b1230..f88323820f 100644
--- a/crypto/thread/arch/thread_posix.c
+++ b/crypto/thread/arch/thread_posix.c
@@ -120,18 +120,22 @@ int ossl_crypto_mutex_try_lock(CRYPTO_MUTEX *mutex)
 
 void ossl_crypto_mutex_lock(CRYPTO_MUTEX *mutex)
 {
+    int rc;
     pthread_mutex_t *mutex_p;
 
     mutex_p = (pthread_mutex_t *)mutex;
-    pthread_mutex_lock(mutex_p);
+    rc = pthread_mutex_lock(mutex_p);
+    OPENSSL_assert(rc == 0);
 }
 
 void ossl_crypto_mutex_unlock(CRYPTO_MUTEX *mutex)
 {
+    int rc;
     pthread_mutex_t *mutex_p;
 
     mutex_p = (pthread_mutex_t *)mutex;
-    pthread_mutex_unlock(mutex_p);
+    rc = pthread_mutex_unlock(mutex_p);
+    OPENSSL_assert(rc == 0);
 }
 
 void ossl_crypto_mutex_free(CRYPTO_MUTEX **mutex)