From 57bef8abc998030d285d3d56ab239aaa2ebc2b41 Mon Sep 17 00:00:00 2001
From: Jens Steube <jens.steube@gmail.com>
Date: Sun, 6 Sep 2020 13:29:32 +0200
Subject: [PATCH] Display possible NVIDIA CUDA/RTC library loading error
 message only in case a NVIDIA device was found using OpenCL

---
 include/types.h |  3 +++
 src/backend.c   | 30 +++++++++++++++++++++++++-----
 2 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/include/types.h b/include/types.h
index 8c2e982fc..a727bd558 100644
--- a/include/types.h
+++ b/include/types.h
@@ -1557,6 +1557,9 @@ typedef struct backend_ctx
 
   // cuda
 
+  int                 rc_cuda_init;
+  int                 rc_nvrtc_init;
+
   int                 nvrtc_driver_version;
   int                 cuda_driver_version;
 
diff --git a/src/backend.c b/src/backend.c
index 9171a5497..5c6b442f4 100644
--- a/src/backend.c
+++ b/src/backend.c
@@ -4935,8 +4935,7 @@ int backend_ctx_init (hashcat_ctx_t *hashcat_ctx)
 
     if (rc_cuda_init == -1)
     {
-      event_log_warning (hashcat_ctx, "Failed to initialize NVIDIA CUDA library.");
-      event_log_warning (hashcat_ctx, NULL);
+      backend_ctx->rc_cuda_init = rc_cuda_init;
 
       cuda_close (hashcat_ctx);
     }
@@ -4953,8 +4952,7 @@ int backend_ctx_init (hashcat_ctx_t *hashcat_ctx)
 
     if (rc_nvrtc_init == -1)
     {
-      event_log_warning (hashcat_ctx, "Failed to initialize NVIDIA RTC library.");
-      event_log_warning (hashcat_ctx, NULL);
+      backend_ctx->rc_nvrtc_init = rc_nvrtc_init;
 
       nvrtc_close (hashcat_ctx);
     }
@@ -6269,7 +6267,29 @@ int backend_ctx_devices_init (hashcat_ctx_t *hashcat_ctx, const int comptime)
             {
               if (user_options->backend_ignore_cuda == false)
               {
-                event_log_warning (hashcat_ctx, "* Device #%u: CUDA SDK Toolkit installation NOT detected.", device_id + 1);
+                if (backend_ctx->rc_cuda_init == -1)
+                {
+                  event_log_warning (hashcat_ctx, "Failed to initialize NVIDIA CUDA library.");
+                  event_log_warning (hashcat_ctx, NULL);
+                }
+                else
+                {
+                  event_log_warning (hashcat_ctx, "Successfully initialized NVIDIA CUDA library.");
+                  event_log_warning (hashcat_ctx, NULL);
+                }
+
+                if (backend_ctx->rc_nvrtc_init == -1)
+                {
+                  event_log_warning (hashcat_ctx, "Failed to initialize NVIDIA RTC library.");
+                  event_log_warning (hashcat_ctx, NULL);
+                }
+                else
+                {
+                  event_log_warning (hashcat_ctx, "Successfully initialized NVIDIA RTC library.");
+                  event_log_warning (hashcat_ctx, NULL);
+                }
+
+                event_log_warning (hashcat_ctx, "* Device #%u: CUDA SDK Toolkit installation NOT detected or incorrectly installed.", device_id + 1);
                 event_log_warning (hashcat_ctx, "             CUDA SDK Toolkit installation required for proper device support and utilization");
                 event_log_warning (hashcat_ctx, "             Falling back to OpenCL Runtime");