From bd741ec57f0cab8a91099d91031865ce65df4c5d Mon Sep 17 00:00:00 2001
From: kalaposfos13 <153381648+kalaposfos13@users.noreply.github.com>
Date: Sat, 27 Jun 2026 15:57:54 +0200
Subject: [PATCH] Don't attempt to LLE the full contents of sys_modules when
 param.sfo is missing (#4632)

---
 .../sysmodule/sysmodule_internal.cpp          | 30 ++++++++++---------
 1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/src/core/libraries/sysmodule/sysmodule_internal.cpp b/src/core/libraries/sysmodule/sysmodule_internal.cpp
index a29aaaa45..aef4576aa 100644
--- a/src/core/libraries/sysmodule/sysmodule_internal.cpp
+++ b/src/core/libraries/sysmodule/sysmodule_internal.cpp
@@ -190,21 +190,23 @@ s32 loadModuleInternal(s32 index, s32 argc, const void* argv, s32* res_out) {
         // Now we need to check if the requested library is allowed to LLE.
         // First, we allow all modules from game-specific sys_modules
         const auto& sys_module_path = EmulatorSettings.GetSysModulesDir();
-        const auto& game_specific_module_path =
-            sys_module_path / game_info->GameSerial() / mod_name;
-        if (std::filesystem::exists(game_specific_module_path)) {
-            // The requested module is present in the game-specific sys_modules, load it.
-            LOG_INFO(Loader, "Loading {} from game serial file {}", mod_name,
-                     game_info->GameSerial());
-            s32 handle =
-                linker->LoadAndStartModule(game_specific_module_path, argc, argv, &start_result);
-            ASSERT_MSG(handle >= 0, "Failed to load module {}", mod_name);
-            mod.handle = handle;
-            mod.is_loaded++;
-            if (res_out != nullptr) {
-                *res_out = start_result;
+        if (!game_info->GameSerial().empty()) {
+            const auto& game_specific_module_path =
+                sys_module_path / game_info->GameSerial() / mod_name;
+            if (std::filesystem::exists(game_specific_module_path)) {
+                // The requested module is present in the game-specific sys_modules, load it.
+                LOG_INFO(Loader, "Loading {} from game serial file {}", mod_name,
+                         game_info->GameSerial());
+                s32 handle = linker->LoadAndStartModule(game_specific_module_path, argc, argv,
+                                                        &start_result);
+                ASSERT_MSG(handle >= 0, "Failed to load module {}", mod_name);
+                mod.handle = handle;
+                mod.is_loaded++;
+                if (res_out != nullptr) {
+                    *res_out = start_result;
+                }
+                return ORBIS_OK;
             }
-            return ORBIS_OK;
         }
 
         // We need to check a few things here.