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drm/radeon: integer overflow in radeon_mode_dumb_create()

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Similar to the handling of amdgpu_mode_dumb_create in commit 54ef0b5461c0
("drm/amdgpu: integer overflow in amdgpu_mode_dumb_create()"),
we thought a patch might be needed here as well.

args->size is a u64.  arg->pitch and args->height are u32.  The
multiplication will overflow instead of using the high 32 bits as
intended.

Signed-off-by: Xiaohui Zhang <xiaohuizhang@ruc.edu.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Xiaohui Zhang 2022-06-07 23:36:31 +08:00 committed by Alex Deucher
parent c4d7738c9e
commit feb54650ba
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/radeon/radeon_gem.c
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@ -833,7 +833,7 @@ int radeon_mode_dumb_create(struct drm_file *file_priv,
args->pitch = radeon_align_pitch(rdev, args->width,
DIV_ROUND_UP(args->bpp, 8), 0);
args->size = args->pitch * args->height;
args->size = (u64)args->pitch * args->height;
args->size = ALIGN(args->size, PAGE_SIZE);
r = radeon_gem_object_create(rdev, args->size, 0,