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[2/2] net/ipv4: Annotate imsf_slist_flex with __counted_by(imsf_numsrc)

Message ID 20240210011643.1706285-2-keescook@chromium.org (mailing list archive)
State Superseded
Headers show
Series stddef: Allow attributes to be used when creating flex arrays | expand

Commit Message

Kees Cook Feb. 10, 2024, 1:16 a.m. UTC 
The size of the imsf_slist_flex member is determined by imsf_numsrc, so
annotate it as such.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: netdev@vger.kernel.org
Cc: linux-hardening@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
---
 include/uapi/linux/in.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Gustavo A. R. Silva Feb. 10, 2024, 3:48 a.m. UTC | #1 
On 2/9/24 19:16, Kees Cook wrote:
> The size of the imsf_slist_flex member is determined by imsf_numsrc, so
> annotate it as such.
> 
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Eric Dumazet <edumazet@google.com>
> Cc: Jakub Kicinski <kuba@kernel.org>
> Cc: Paolo Abeni <pabeni@redhat.com>
> Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
> Cc: netdev@vger.kernel.org
> Cc: linux-hardening@vger.kernel.org
> Signed-off-by: Kees Cook <keescook@chromium.org>

LGTM:

Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>

Thanks!
Jakub Kicinski Feb. 13, 2024, 1:35 a.m. UTC | #2 
On Fri,  9 Feb 2024 17:16:42 -0800 Kees Cook wrote:
> The size of the imsf_slist_flex member is determined by imsf_numsrc, so
> annotate it as such.

Acked-by: Jakub Kicinski <kuba@kernel.org>
diff mbox series

Patch

diff --git a/include/uapi/linux/in.h b/include/uapi/linux/in.h
index e682ab628dfa..445f6ae76f1e 100644
--- a/include/uapi/linux/in.h
+++ b/include/uapi/linux/in.h
@@ -199,7 +199,8 @@  struct ip_msfilter {
 	__u32		imsf_numsrc;
 	union {
 		__be32		imsf_slist[1];
-		__DECLARE_FLEX_ARRAY(__be32, imsf_slist_flex);
+		__DECLARE_FLEX_ARRAY_ATTR(__be32, imsf_slist_flex,
+					  __counted_by(imsf_numsrc));
 	};
 };