diff options
| -rw-r--r-- | display/surface.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/display/surface.h b/display/surface.h index e677610..0b7edb3 100644 --- a/display/surface.h +++ b/display/surface.h @@ -55,10 +55,16 @@ static _inline void FreeSurfaceInfo(PDev *pdev, UINT32 surface_id) if (surface_id == 0) { return; } - EngAcquireSemaphore(pdev->Res->surface_sem); + DEBUG_PRINT((pdev, 9, "%s: %p: %d\n", __FUNCTION__, pdev, surface_id)); surface = &pdev->Res->surfaces_info[surface_id]; + if (surface->draw_area.base_mem == NULL) { + DEBUG_PRINT((pdev, 9, "%s: %p: %d: double free. safely ignored\n", __FUNCTION__, + pdev, surface_id)); + EngReleaseSemaphore(pdev->Res->surface_sem); + return; + } surface->draw_area.base_mem = NULL; /* Mark as not used */ surface->u.next_free = pdev->Res->free_surfaces; pdev->Res->free_surfaces = surface; |