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From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: Ben Skeggs <bskeggs@redhat.com>,
	Karol Herbst <kherbst@redhat.com>, Lyude Paul <lyude@redhat.com>,
	David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org,
	linux-kernel@vger.kernel.org,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	linux-hardening@vger.kernel.org
Subject: [PATCH][next] drm/nouveau/nvkm: Replace zero-length array with flexible-array member
Date: Mon, 9 Jan 2023 19:39:30 -0600	[thread overview]
Message-ID: <Y7zB0q2pr7lEpHGs@work> (raw)

Zero-length arrays are deprecated[1] and we are moving towards
adopting C99 flexible-array members instead. So, replace zero-length
array declaration in struct nvfw_hs_load_header_v2 with flex-array
member.

This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
routines on memcpy() and help us make progress towards globally
enabling -fstrict-flex-arrays=3 [2].

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays [1]
Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [2]
Link: https://github.com/KSPP/linux/issues/78
Signed-off-by: Gustavo A. R. Silva <gustavoars@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


WARNING: multiple messages have this Message-ID (diff)
From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: Ben Skeggs <bskeggs@redhat.com>,
	Karol Herbst <kherbst@redhat.com>, Lyude Paul <lyude@redhat.com>,
	David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>
Cc: nouveau@lists.freedesktop.org, linux-hardening@vger.kernel.org,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>
Subject: [Nouveau] [PATCH][next] drm/nouveau/nvkm: Replace zero-length array with flexible-array member
Date: Mon, 9 Jan 2023 19:39:30 -0600	[thread overview]
Message-ID: <Y7zB0q2pr7lEpHGs@work> (raw)

Zero-length arrays are deprecated[1] and we are moving towards
adopting C99 flexible-array members instead. So, replace zero-length
array declaration in struct nvfw_hs_load_header_v2 with flex-array
member.

This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
routines on memcpy() and help us make progress towards globally
enabling -fstrict-flex-arrays=3 [2].

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays [1]
Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [2]
Link: https://github.com/KSPP/linux/issues/78
Signed-off-by: Gustavo A. R. Silva <gustavoars@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


WARNING: multiple messages have this Message-ID (diff)
From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: Ben Skeggs <bskeggs@redhat.com>,
	Karol Herbst <kherbst@redhat.com>, Lyude Paul <lyude@redhat.com>,
	David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>
Cc: nouveau@lists.freedesktop.org, linux-hardening@vger.kernel.org,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>
Subject: [PATCH][next] drm/nouveau/nvkm: Replace zero-length array with flexible-array member
Date: Mon, 9 Jan 2023 19:39:30 -0600	[thread overview]
Message-ID: <Y7zB0q2pr7lEpHGs@work> (raw)

Zero-length arrays are deprecated[1] and we are moving towards
adopting C99 flexible-array members instead. So, replace zero-length
array declaration in struct nvfw_hs_load_header_v2 with flex-array
member.

This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
routines on memcpy() and help us make progress towards globally
enabling -fstrict-flex-arrays=3 [2].

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays [1]
Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [2]
Link: https://github.com/KSPP/linux/issues/78
Signed-off-by: Gustavo A. R. Silva <gustavoars@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


             reply	other threads:[~2023-01-10  1:39 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-10  1:39 Gustavo A. R. Silva [this message]
2023-01-10  1:39 ` [PATCH][next] drm/nouveau/nvkm: Replace zero-length array with flexible-array member Gustavo A. R. Silva
2023-01-10  1:39 ` [Nouveau] " Gustavo A. R. Silva
2023-01-12 22:49 ` Kees Cook
2023-01-12 22:49   ` Kees Cook
2023-01-12 22:49   ` [Nouveau] " Kees Cook
2023-01-16 14:41   ` Karol Herbst
2023-01-16 14:41     ` Karol Herbst
2023-01-16 14:41     ` Karol Herbst

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