Fix smatch warning:
drivers/gpu/drm/i915/gem/i915_gem_context.c:847 set_proto_ctx_sseu()
warn: potential spectre issue 'pc->user_engines' [r] (local cap)
Fixes: d4433c7600f7 ("drm/i915/gem: Use the proto-context to handle create
parameters (v5)")
Cc: <[email protected]> # v5.15+
Signed-off-by: Kunwu Chan <[email protected]>
Suggested-by: Tvrtko Ursulin <[email protected]>
Reviewed-by: Tvrtko Ursulin <[email protected]>
Link: https://lore.kernel.org/all/[email protected]
---
drivers/gpu/drm/i915/gem/i915_gem_context.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c
b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index 9a9ff84c90d7..e38f06a6e56e 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -844,6 +844,7 @@ static int set_proto_ctx_sseu(struct drm_i915_file_private
*fpriv,
if (idx >= pc->num_user_engines)
return -EINVAL;
+ idx = array_index_nospec(idx, pc->num_user_engines);
pe = &pc->user_engines[idx];
/* Only render engine supports RPCS configuration. */
--
2.34.1
