Memory Manager: ensure safety of GPU to CPU address.

2022-04-02 22:38:58 +02:00
parent 5a568b1655
commit 7cfa28a666
1 changed files with 3 additions and 0 deletions
--- a/src/video_core/memory_manager.cpp
+++ b/src/video_core/memory_manager.cpp
@@ -193,6 +193,9 @@ void MemoryManager::Unmap(GPUVAddr gpu_addr, std::size_t size) {
 }

 std::optional<VAddr> MemoryManager::GpuToCpuAddress(GPUVAddr gpu_addr) const {
+    if (gpu_addr >= address_space_size) [[unlikely]] {
+        return std::nullopt;
+    }
    if (GetEntry<true>(gpu_addr) != EntryType::Mapped) [[unlikely]] {
        if (GetEntry<false>(gpu_addr) != EntryType::Mapped) {
            return std::nullopt;