From: Jakob Bornecrantz jakob@vmware.com
Signed-off-by: Jakob Bornecrantz jakob@vmware.com Reviewed-by: Thomas Hellstrom thellstrom@vmware.com --- drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 16 +++++++++++++--- 1 files changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c index 66dd70c..6f28182 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c @@ -197,6 +197,12 @@ static int vmw_cmd_blt_surf_screen_check(struct vmw_private *dev_priv, } *cmd;
cmd = container_of(header, struct vmw_sid_cmd, header); + + if (unlikely(!sw_context->kernel)) { + DRM_ERROR("Kernel only SVGA3d command: %u.\n", cmd->header.id); + return -EPERM; + } + return vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.srcImage.sid); }
@@ -210,6 +216,12 @@ static int vmw_cmd_present_check(struct vmw_private *dev_priv, } *cmd;
cmd = container_of(header, struct vmw_sid_cmd, header); + + if (unlikely(!sw_context->kernel)) { + DRM_ERROR("Kernel only SVGA3d command: %u.\n", cmd->header.id); + return -EPERM; + } + return vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.sid); }
@@ -477,14 +489,12 @@ static int vmw_cmd_check_not_3d(struct vmw_private *dev_priv, void *buf, uint32_t *size) { uint32_t size_remaining = *size; - bool need_kernel = true; uint32_t cmd_id;
cmd_id = le32_to_cpu(((uint32_t *)buf)[0]); switch (cmd_id) { case SVGA_CMD_UPDATE: *size = sizeof(uint32_t) + sizeof(SVGAFifoCmdUpdate); - need_kernel = false; break; case SVGA_CMD_DEFINE_GMRFB: *size = sizeof(uint32_t) + sizeof(SVGAFifoCmdDefineGMRFB); @@ -506,7 +516,7 @@ static int vmw_cmd_check_not_3d(struct vmw_private *dev_priv, return -EINVAL; }
- if (unlikely(need_kernel && !sw_context->kernel)) { + if (unlikely(!sw_context->kernel)) { DRM_ERROR("Kernel only SVGA command: %u.\n", cmd_id); return -EPERM; }