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| author | xinhui pan <xinhui.pan@amd.com> | 2021-04-07 19:29:39 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-04-08 00:36:40 -0400 |
| commit | 1b0b6e939f112949089e32ec89fd27796677263a (patch) | |
| tree | 5d5f2d50f79cfdb5a026d5d8ba41f7aba934f092 | |
| parent | df7232c4c676be29f1cf45058ec156c1183539ff (diff) | |
| download | misc-1b0b6e939f112949089e32ec89fd27796677263a.tar.gz | |
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>
Cc: stable@vger.kernel.org
| -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 9fd2157b133ac..5efa331e3ee82 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -906,7 +906,7 @@ static int amdgpu_ttm_tt_pin_userptr(struct ttm_bo_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; |