linux-kernel - Re: [PATCH] fs/affs: struct affs_data_head: Replace 1-element array with flexible array

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Message-ID: <ee3b7adb-0f11-4650-ad1f-afc9dceedc8a@embeddedor.com>
Date: Wed, 10 Jul 2024 17:25:08 -0600
From: "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To: Kees Cook <kees@...nel.org>, David Sterba <dsterba@...e.com>
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-hardening@...r.kernel.org
Subject: Re: [PATCH] fs/affs: struct affs_data_head: Replace 1-element array
 with flexible array

On 10/07/24 16:57, Kees Cook wrote:
> Replace the deprecated[1] use of a 1-element array in
> struct affs_data_head with a modern flexible array.
> 
> No binary differences are present after this conversion.
> 
> Link: https://github.com/KSPP/linux/issues/79 [1]
> Signed-off-by: Kees Cook <kees@...nel.org>

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

Thanks
-- 
Gustavo

> ---
> Cc: David Sterba <dsterba@...e.com>
> Cc: linux-fsdevel@...r.kernel.org
> ---
>   fs/affs/amigaffs.h | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/fs/affs/amigaffs.h b/fs/affs/amigaffs.h
> index 09dc23a644df..1b973a669d23 100644
> --- a/fs/affs/amigaffs.h
> +++ b/fs/affs/amigaffs.h
> @@ -119,7 +119,7 @@ struct affs_data_head
>   	__be32 size;
>   	__be32 next;
>   	__be32 checksum;
> -	u8 data[1];	/* depends on block size */
> +	u8 data[];	/* depends on block size */
>   };
>   
>   /* Permission bits */