X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/b1ab9ed8d0e0f1c3b66d7daa8fd5564444c56195..420ff9d9379a8d93f2c90f026a797bdea1eb4517:/libsecurity_cdsa_client/lib/signclient.cpp

diff --git a/libsecurity_cdsa_client/lib/signclient.cpp b/libsecurity_cdsa_client/lib/signclient.cpp
index 6b5e0377..39c7a02f 100644
--- a/libsecurity_cdsa_client/lib/signclient.cpp
+++ b/libsecurity_cdsa_client/lib/signclient.cpp
@@ -29,6 +29,7 @@ using namespace CssmClient;
 //
 void SigningContext::activate()
 {
+    StLock<Mutex> _(mActivateMutex);
 	if (!mActive)
 	{
 		check(CSSM_CSP_CreateSignatureContext(attachment()->handle(), mAlgorithm,