Merge tag 'drm-misc-next-2020-10-27' of git://anongit.freedesktop.org/drm/drm-misc...

[sfrench/cifs-2.6.git] / drivers / gpu / drm / amd / amdgpu / amdgpu_gem.c

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index be08a63ef58c96420be300d8cc4a4b6a9004d4c6..8ea6fc7457690fb40520e8837905b93b87d9fa7b 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -609,6 +609,7 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
        struct ww_acquire_ctx ticket;
        struct list_head list, duplicates;
        uint64_t va_flags;
+       uint64_t vm_size;
        int r = 0;
 
        if (args->va_address < AMDGPU_VA_RESERVED_SIZE) {
@@ -629,6 +630,15 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
 
        args->va_address &= AMDGPU_GMC_HOLE_MASK;
 
+       vm_size = adev->vm_manager.max_pfn * AMDGPU_GPU_PAGE_SIZE;
+       vm_size -= AMDGPU_VA_RESERVED_SIZE;
+       if (args->va_address + args->map_size > vm_size) {
+               dev_dbg(&dev->pdev->dev,
+                       "va_address 0x%llx is in top reserved area 0x%llx\n",
+                       args->va_address + args->map_size, vm_size);
+               return -EINVAL;
+       }
+
        if ((args->flags & ~valid_flags) && (args->flags & ~prt_flags)) {
                dev_dbg(&dev->pdev->dev, "invalid flags combination 0x%08X\n",
                        args->flags);