From: Xiaohui Zhang xiaohuizhang@ruc.edu.cn
[ Upstream commit feb54650bae25f2a2adfc493e3e254e7c27a3fba ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/radeon/radeon_gem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c index a36a4f2c76b0..774fabde21c3 100644 --- a/drivers/gpu/drm/radeon/radeon_gem.c +++ b/drivers/gpu/drm/radeon/radeon_gem.c @@ -829,7 +829,7 @@ 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,