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From:   Kees Cook <keescook@chromium.org>
To:     Ben Skeggs <bskeggs@redhat.com>
Cc:     Kees Cook <keescook@chromium.org>,
        Karol Herbst <kherbst@redhat.com>,
        Lyude Paul <lyude@redhat.com>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        Gourav Samaiya <gsamaiya@nvidia.com>,
        "Gustavo A. R. Silva" <gustavoars@kernel.org>,
        dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org,
        linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org
Subject: [RESEND][PATCH] drm/nouveau/fb/ga102: Replace zero-length array of trailing structs with flex-array
Date:   Tue,  3 Jan 2023 15:48:36 -0800
Message-Id: <20230103234835.never.378-kees@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Zero-length arrays are deprecated[1] and are being replaced with
flexible array members in support of the ongoing efforts to tighten the
FORTIFY_SOURCE routines on memcpy(), correctly instrument array indexing
with UBSAN_BOUNDS, and to globally enable -fstrict-flex-arrays=3.

Replace zero-length array with flexible-array member.

This results in no differences in binary output.

[1] https://github.com/KSPP/linux/issues/78

Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Karol Herbst <kherbst@redhat.com>
Cc: Lyude Paul <lyude@redhat.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Gourav Samaiya <gsamaiya@nvidia.com>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: dri-devel@lists.freedesktop.org
Cc: nouveau@lists.freedesktop.org
Signed-off-by: Kees Cook <keescook@chromium.org>
---
Sent before as: https://lore.kernel.org/all/20221118211207.never.039-kees@kernel.org/
---
 drivers/gpu/drm/nouveau/include/nvfw/hs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/include/nvfw/hs.h b/drivers/gpu/drm/nouveau/include/nvfw/hs.h
index 8c4cd08a7b5f..8b58b668fc0c 100644
--- a/drivers/gpu/drm/nouveau/include/nvfw/hs.h
+++ b/drivers/gpu/drm/nouveau/include/nvfw/hs.h
@@ -52,7 +52,7 @@ struct nvfw_hs_load_header_v2 {
 	struct {
 		u32 offset;
 		u32 size;
-	} app[0];
+	} app[];
 };
 
 const struct nvfw_hs_load_header_v2 *nvfw_hs_load_header_v2(struct nvkm_subdev *, const void *);
-- 
2.34.1