[PATCH] drm/xe/query: fix gt_id bounds check

Matthew Auld matthew.auld at intel.com
Thu Mar 21 11:06:30 UTC 2024


The user provided gt_id should always be less than the
XE_MAX_GT_PER_TILE.

Fixes: 7793d00d1bf5 ("drm/xe: Correlate engine and cpu timestamps with better accuracy")
Signed-off-by: Matthew Auld <matthew.auld at intel.com>
Cc: Nirmoy Das <nirmoy.das at intel.com>
Cc: <stable at vger.kernel.org> # v6.8+
---
 drivers/gpu/drm/xe/xe_query.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_query.c b/drivers/gpu/drm/xe/xe_query.c
index fcd8680d2ccc..df407d73e5f5 100644
--- a/drivers/gpu/drm/xe/xe_query.c
+++ b/drivers/gpu/drm/xe/xe_query.c
@@ -133,7 +133,7 @@ query_engine_cycles(struct xe_device *xe,
 		return -EINVAL;
 
 	eci = &resp.eci;
-	if (eci->gt_id > XE_MAX_GT_PER_TILE)
+	if (eci->gt_id >= XE_MAX_GT_PER_TILE)
 		return -EINVAL;
 
 	gt = xe_device_get_gt(xe, eci->gt_id);
-- 
2.44.0



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