[PATCH][Security Check] drm/i915/gvt: return error on cmd access
Zhao Yan
yan.y.zhao at intel.com
Wed Jul 25 06:42:55 UTC 2018
If a register is not cmd accessible, should not just print error
message. Return error here so as not to deliver this cmd.
Signed-off-by: Zhao Yan <yan.y.zhao at intel.com>
---
drivers/gpu/drm/i915/gvt/cmd_parser.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c b/drivers/gpu/drm/i915/gvt/cmd_parser.c
index c39e13abe50d..bc05831faa5f 100644
--- a/drivers/gpu/drm/i915/gvt/cmd_parser.c
+++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c
@@ -874,7 +874,7 @@ static int cmd_reg_handler(struct parser_exec_state *s,
if (!intel_gvt_mmio_is_cmd_access(gvt, offset)) {
gvt_vgpu_err("%s access to non-render register (%x)\n",
cmd, offset);
- return 0;
+ return -EPERM;
}
if (is_shadowed_mmio(offset)) {
--
2.17.1
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