Re: [PATCH] Backport commit 5ed7f4b5eca1 ("drm/vmwgfx: integer underflow in vmw_cmd_dx_set_shader() leading to an invalid read") to linux-5.1-stable

On Sun, Jun 16, 2019 at 07:57:57PM -0400, Sasha Levin wrote:

On Sun, Jun 16, 2019 at 05:57:40PM +1200, Murray McAllister wrote:

...

Commit 5ed7f4b5eca1 ("drm/vmwgfx: integer underflow in vmw_cmd_dx_set_shader() leading to an invalid read") upstream.

Commit 5ed7f4b5eca1 ("drm/vmwgfx: integer underflow in vmw_cmd_dx_set_shader() leading to an invalid read") resolved an integer underflow when SVGA_3D_CMD_DX_SET_SHADER was called with a shader ID of SVGA3D_INVALID_ID, and a shader type of SVGA3D_SHADERTYPE_INVALID.

(The original patch failed to apply cleanly in 5.1-stable as VMW_DEBUG_USER does not exist here.)

What about 4.19 and 4.14?

I already applied it everywhere (even 4.9.y and 4.4.y) :)

thanks,

greg k-h