Commit 1b0b6e93 authored by xinhui pan's avatar xinhui pan Committed by Alex Deucher
Browse files

drm/amdgpu: Fix size overflow 



ttm->num_pages is uint32. Hit overflow when << PAGE_SHIFT directly

Fixes: 230c079f ("drm/ttm: make num_pages uint32_t")
Signed-off-by: default avatarxinhui pan <xinhui.pan@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent df7232c4

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

+1 −1
Original line number Diff line number Diff line
@@ -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;