From 73a37a43d1b0ad4fb2154bc000d44c89e458619d Mon Sep 17 00:00:00 2001 From: Yan Zhao Date: Wed, 23 Dec 2020 11:45:17 +0800 Subject: [PATCH] drm/i915/gvt: filter cmds "lrr-src" and "lrr-dst" in cmd_handler do not allow "lrr-src" and "lrr-dst" Cc: Colin Xu Cc: Kevin Tian Signed-off-by: Yan Zhao Signed-off-by: Zhenyu Wang Link: http://patchwork.freedesktop.org/patch/msgid/20201223034517.17080-1-yan.y.zhao@intel.com Reviewed-by: Zhenyu Wang --- drivers/gpu/drm/i915/gvt/cmd_parser.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c b/drivers/gpu/drm/i915/gvt/cmd_parser.c index 7ee1016..be0a7d4 100644 --- a/drivers/gpu/drm/i915/gvt/cmd_parser.c +++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c @@ -993,6 +993,12 @@ static int cmd_reg_handler(struct parser_exec_state *s, return 0; } + if (!strncmp(cmd, "lrr-src", 7) || + !strncmp(cmd, "lrr-dst", 7)) { + gvt_vgpu_err("not allowed cmd %s\n", cmd); + return -EPERM; + } + if (is_cmd_update_pdps(offset, s) && cmd_pdp_mmio_update_handler(s, offset, index)) return -EINVAL; -- 2.7.4