Re: [PATCH v2 01/15] SUNRPC: Fail faster on bad verifier

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On Mon, 2022-06-06 at 10:50 -0400, Chuck Lever wrote:
> A bad verifier is not a garbage argument, it's an authentication
> failure. Retrying it doesn't make the problem go away, and delays
> upper layer recovery steps.
> 
> Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
> ---
>  net/sunrpc/clnt.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
> index e2c6eca0271b..ed13d55df720 100644
> --- a/net/sunrpc/clnt.c
> +++ b/net/sunrpc/clnt.c
> @@ -2649,7 +2649,7 @@ rpc_decode_header(struct rpc_task *task, struct xdr_stream *xdr)
>  
>  out_verifier:
>  	trace_rpc_bad_verifier(task);
> -	goto out_garbage;
> +	goto out_err;
>  
>  out_msg_denied:
>  	error = -EACCES;
> 
> 

Looks like this will mostly manifest as an -EIO return, which is what we
want in most cases for a munged verifer.

Reviewed-by: Jeff Layton <jlayton@xxxxxxxxxx>




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