Re: [PATCH] NFS: Replace one-element array with flexible-array member

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On Fri, 2022-01-14 at 00:57 +0000, cgel.zte@xxxxxxxxx wrote:
> From: Changcheng Deng <deng.changcheng@xxxxxxxxxx>
> 
> There is a regular need in the kernel to provide a way to declare
> having
> a dynamically sized set of trailing elements in a structure. Kernel
> code
> should always use “flexible array members” for these cases. The older
> style of one-element or zero-length arrays should no longer be used.
> 
> Reference:
> https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length
> -
> and-one-element-arrays
> 
> Reported-by: Zeal Robot <zealci@xxxxxxxxxx>
> Signed-off-by: Changcheng Deng <deng.changcheng@xxxxxxxxxx>
> ---
>  include/linux/nfs_xdr.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
> index 39390d9df9e1..7f51edd5785a 100644
> --- a/include/linux/nfs_xdr.h
> +++ b/include/linux/nfs_xdr.h
> @@ -421,7 +421,7 @@ struct nfs42_layout_error {
>         __u64 offset;
>         __u64 length;
>         nfs4_stateid stateid;
> -       struct nfs42_device_error errors[1];
> +       struct nfs42_device_error errors[];
>  };
>  
>  #define NFS42_LAYOUTERROR_MAX 5

NACK. This is a fixed size array of length 1, not a variable size
array. Please fix your tool.

-- 
Trond Myklebust
Linux NFS client maintainer, Hammerspace
trond.myklebust@xxxxxxxxxxxxxxx






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