[PATCH 4.14 114/143] drm/i915/gvt: fix memory leak of a cmd_entry struct on error exit path

[Greg Kroah-Hartman]

4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

commit ffdf16edfbbe77f5f5c3c87fe8d7387ecd16241b upstream

The error exit path when a duplicate is found does not kfree and cmd_entry
struct and hence there is a small memory leak.  Fix this by kfree'ing it.

Detected by CoverityScan, CID#1370198 ("Resource Leak")

Fixes: be1da7070aea ("drm/i915/gvt: vGPU command scanner")
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Zhenyu Wang <zhenyuw@xxxxxxxxxxxxxxx>
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@xxxxxxxxx>
Acked-by: Zhenyu Wang <zhenyuw@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/i915/gvt/cmd_parser.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/i915/gvt/cmd_parser.c
+++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c
@@ -2802,6 +2802,7 @@ static int init_cmd_table(struct intel_g
 		if (info) {
 			gvt_err("%s %s duplicated\n", e->info->name,
 					info->name);
+			kfree(e);
 			return -EEXIST;
 		}