From 8a922cf12cdeadc64abdbb1c9fe330c44a045f57 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Fri, 22 Sep 2023 10:32:08 -0700 Subject: [PATCH] drm/i915/selftests: Annotate struct perf_series with __counted_by MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct perf_series. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Jani Nikula Cc: Joonas Lahtinen Cc: Rodrigo Vivi Cc: Tvrtko Ursulin Cc: David Airlie Cc: Daniel Vetter Cc: Chris Wilson Cc: John Harrison Cc: Andi Shyti Cc: Matthew Brost Cc: intel-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Reviewed-by: Andrzej Hajda Reviewed-by: Andi Shyti Signed-off-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20230922173216.3823169-3-keescook@chromium.org --- drivers/gpu/drm/i915/selftests/i915_request.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/selftests/i915_request.c b/drivers/gpu/drm/i915/selftests/i915_request.c index a9b79888c193..acae30a04a94 100644 --- a/drivers/gpu/drm/i915/selftests/i915_request.c +++ b/drivers/gpu/drm/i915/selftests/i915_request.c @@ -1924,7 +1924,7 @@ struct perf_stats { struct perf_series { struct drm_i915_private *i915; unsigned int nengines; - struct intel_context *ce[]; + struct intel_context *ce[] __counted_by(nengines); }; static int cmp_u32(const void *A, const void *B)