diff options
| author | xinhui pan <xinhui.pan@amd.com> | 2021-04-07 19:29:39 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-04-09 16:54:13 -0400 |
| commit | b16e685725a92bd7fd8496e38468622caf743771 (patch) | |
| tree | 84ba794628ebf72c79085c543692bba9ed0791c4 /drivers | |
| parent | d844c6d74740b3bd7795140b00d28dcc5ef78665 (diff) | |
drm/amdgpu: Fix size overflow
ttm->num_pages is uint32. Hit overflow when << PAGE_SHIFT directly
Fixes: 230c079fdcf4 ("drm/ttm: make num_pages uint32_t")
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index f292f7abb02c..3bef0432cac2 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -830,7 +830,7 @@ static int amdgpu_ttm_tt_pin_userptr(struct ttm_device *bdev, /* Allocate an SG array and squash pages into it */ r = sg_alloc_table_from_pages(ttm->sg, ttm->pages, ttm->num_pages, 0, - ttm->num_pages << PAGE_SHIFT, + (u64)ttm->num_pages << PAGE_SHIFT, GFP_KERNEL); if (r) goto release_sg; |